Light fixture and lens assembly for same

• US 20050281024A1
• Filed: 10/21/2004
• Published: 12/22/2005
• Est. Priority Date: 06/18/2004
• Status: Active Grant

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: Acuity Brands, Inc.
• Inventors: Trott, Gary D., Gould, Carl T., Sharp, Christopher L., Mayfield, John T. III, Leadford, Kevin, Lydecker, Stephen H.
• Granted Patent: US 7,229,192 B2
• Time in Patent Office: Days
• US Class Current: 362/221
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 17/164 the parts being subjected to bending, e.g. snap joints
• CPC Class Codes: F21V 23/026 Fastening of transformers or ballasts
• CPC Class Codes: F21V 5/02 of prismatic shape F21V5/04 takes precedence
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes
• CPC Class Codes: F21Y 2113/00 Combination of light sources

Abstract

A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned and a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens assembly. In one example, the lens includes a curved prismatic surface that can be oriented toward or away from the underlying light source.

Claims

1. A light fixture, comprising:

a reflector assembly extending along a base longitudinal axis, wherein the reflector assembly comprises at least one end face forming an obtuse angle with respect to the base longitudinal axis of the reflector assembly.

2. The light fixture of claim 1, further comprising a linear light source mounted within a portion of the reflector assembly.

3. The light fixture of claim 2, wherein the linear light source has at least one end, and wherein the at least one end face of the reflector assembly defines an opening constructed and arranged for receiving at least a portion of the at least one end of the linear light source.

4. The light fixture of claim 2, wherein the at least one end face comprises a first end face and an opposed second end face.

5. The light fixture of claim 4, wherein the reflector assembly further comprises an elongated base member having a first end edge, a spaced second end edge, and a base surface, the base longitudinal axis extending therebetween the first and second end edges.

6. The light fixture of claim 5, wherein each of the respective first and second end faces has a top edge, the opposed first and second end faces each being positioned with respect to the base member such that a portion of the top edge of the respective end face is positioned in substantially overlying registration with a portion of the base surface.

7. The light fixture of claim 6, wherein each of the respective first and second end faces has a face longitudinal axis that forms the obtuse angle with respect to the longitudinal axis of the base member.

8. The light fixture of claim 6, wherein at least a portion of the top edge of the respective end faces is spaced from at least a portion of the respective first and second end edges of the base member.

9. The light fixture of claim 7, wherein the respective obtuse angles formed between the face longitudinal axis of the first end face and the base longitudinal axis and the face longitudinal axis of the second end face and the base longitudinal axis are substantially equal.

10. The light fixture of claim 4, wherein each of the first and second end faces is substantially planar.

11. The light fixture of claim 4, wherein portions of each of the first and second end faces are non-planar.

12. The light fixture of claim 11, wherein portions of each of the first and second end faces are curved.

13. The light fixture of claim 12, wherein portions of the first and second end faces are substantially concave.

14. The light fixture of claim 12, wherein portions of the first and second end faces are substantially convex.

15. The light fixture of claim 1, wherein the obtuse angle is about and between about 95°

to 160°

.

16. The light fixture of claim 1, wherein the obtuse angle is about and between about 100°

to 150°

.

17. The light fixture of claim 1, wherein the obtuse angle is about and between about 100°

to 135°

.

18. The light fixture of claim 1, wherein the obtuse angle is about 120°

.

19. The light fixture of claim 6, wherein the linear light source comprises a first end operatively connected to the base member adjacent the first end face and a second end operatively connected to the base member adjacent the second end face, and wherein the first and second faces each define an opening constructed and arranged to receive at least a portion of a selected end of the light source therethrough.

20. The light fixture of claim 19, further comprising a housing having a first end wall and an opposed second end wall, wherein the first end wall is connected to a portion of the first end edge of the base member and the second end wall is connected to a portion of the second end edge of the base member.

21. The light fixture of claim 20, wherein a portion of a bottom edge of the first end face is connected to a bottom portion of the first end wall of the housing and a portion of a bottom edge of the second end face is connected to a bottom portion of the second end wall.

22. The light fixture of claim 20, wherein the first end wall is substantially perpendicular to the base member adjacent the first end edge and the second end wall is substantially perpendicular to the base member adjacent the second end edge.

23. The light fixture of claim 20, wherein portions of the respective first and second end faces, the respective first and second end walls, and the base member each define a chamber adjacent the respective top edges of the first and second faces that is in operative communication with the opening in the respective first and second faces.

24. The light fixture of claim 23, wherein each of the respective chambers is constructed and arranged to receive at least a portion of a selected end of the linear light source therein.

25. The light fixture of claim 24, wherein each chamber is constructed and arranged to mount an electrical contact for detachably securing a selected end of the linear light source thereto.

26. The light fixture of claim 25, wherein the electrical contact is mounted onto a portion of the base surface of the base member.

27. The light fixture of claim 5, wherein the base member comprises a single piece of material.

28. The light fixture of claim 5, wherein the base member has a first longitudinally extending side edge and an opposed second longitudinally extending side edge, a portion of the base surface of the base member defining at least one longitudinally extending hollow, each hollow having a longitudinally extending first hollow edge and a longitudinally extending second hollow edge, at least a portion of a section of the hollow normal to the base longitudinal axis having a generally curved, concave shape.

29. The light fixture of claim 28, wherein each hollow extends inwardly to a central portion between the respective first and second hollow edges, the central portion of the hollow defining a longitudinally extending trough that extends inwardly away from the surface of the hollow, the trough housing the light source.

30. The light fixture of claim 29, wherein the central portion is generally symmetrically positioned with respect to the first and second hollow edges.

31. The light fixture of claim 29, further comprising a lens assembly comprising an elongated lens having a first end edge, an opposed second end edge, and a curved central lens portion that extends between the first and second end edges, the central lens portion defining a concave face oriented toward and spaced from the light source, wherein the lens is constructed and arranged for detachably securing the lens to a portion of the trough.

32. The light fixture of claim 31, wherein the lens assembly further comprises a diffuser inlay positioned between the linear light source and the concave face of the central lens portion.

33. The light fixture of claim 32, wherein the diffuser inlay is positioned in substantial overlying registration with the concave face of the central lens portion.

34. The light fixture of claim 31, wherein the lens is positioned with respect to the trough such that substantially all of the light emitted by the linear light source passes through the lens.

35. The light fixture of claim 2, wherein the linear light source is a T5 lamp.

36. The light fixture of claim 1, wherein at least a portion of the reflector assembly is coated with a substantially flat reflective material.

37. A light fixture, comprising:

a reflector assembly extending along a longitudinal axis, the reflector assembly defining a trough;

a linear light source operatively mounted within a portion of the trough of the reflector assembly; and

a lens assembly comprising an elongated lens, the elongated lens mounted to a portion of the reflector assembly,

wherein the reflector assembly controls high angle glare in the transverse direction by blocking high angle rays from the lens, and wherein the lens controls high angle glare in the longitudinal direction optically.

38. The light fixture of claim 37, wherein the reflector assembly further comprises an elongated base member having a first end edge, a spaced second end edge, a first longitudinally extending side edge, an opposed second longitudinally extending side edge, and a base surface, the longitudinal axis of the reflector assembly extending between the first end edge and the second end edge.

39. The light fixture of claim 38, wherein a portion of the base surface of the base member defines at least one longitudinally extending hollow, each hollow having a longitudinally extending first hollow edge and a longitudinally extending second hollow edge, at least a portion of a section of the hollow normal to the base longitudinal axis having a generally curved, concave shape, wherein each hollow extends inwardly to a central portion between the respective first and second hollow edges, the central portion of the hollow defining the longitudinally extending trough, which extends inwardly away from the surface of the hollow.

40. The light fixture of claim 39, wherein the portions of the hollow extending between the central portion and the respective first and second hollow edges forms a generally curved reflective surface.

41. The light fixture of claim 39, wherein the elongated lens has a lens longitudinal axis that is generally parallel to the linear light source and a central lens portion that is curved in a plane that is transverse to the lens longitudinal axis, the lens being constructed and arranged for detachable connection to a portion of the trough of the base member, the central lens portion of the lens having a prismatic surface that defines a face oriented toward and spaced from the light source.

42. The light fixture of claim 41, wherein the lens of said lens assembly is positioned with respect to the trough of the reflector assembly such that substantially all of the light emitted by the light source passes through the lens.

43. The light fixture of claim 41, wherein at least a portion of the face of the central lens portion is concave.

44. The light fixture of claim 41, wherein at least a portion of the face of the central lens portion is convex.

45. The light fixture of claim 41, wherein the lens is positioned in overlying registration with the trough, and wherein the central lens portion of the lens is symmetric about a plane that extends through the linear light source.

46. The light fixture of claim 41, wherein the central portion of the lens is generally symmetrically positioned with respect to the first and second hollow edges.

47. The light fixture of claim 39, wherein the respective first and second hollow edges extend to the respective first and second longitudinally extending side edges of the base member.

48. The light fixture of claim 39, wherein the base member defines a pair of adjoining, parallel hollows, a first hollow edge of a first hollow of the pair of hollows extending to the first side edge of the base member, a second hollow edge of a second hollow of the pair of hollows extending to the second side edge of the base member, and the second hollow edge of the first hollow and the first hollow edge of the second hollow being positioned proximate each other.

49. The light fixture of claim 39, wherein the trough has a top surface that adjoins a first side trough surface and an opposed second side trough surface, wherein each respective first and second side trough surfaces has an lower edge that is integral with a portion of the adjoined hollow, and wherein each of the first side trough surface and the second side trough surface has a trough surface axis that extends in a plane normal to the base longitudinal axis.

50. The light fixture of claim 49, wherein the trough surface axis of each of the first and second trough surfaces respectively forms an angle of about and between about 140°

to 90°

with respect to the top surface of the trough.

51. The light fixture of claim 49, wherein the trough surface axis of each of the first and second trough surfaces respectively forms an angle of about and between about 135°

to 95°

with respect to the top surface of the trough.

52. The light fixture of claim 49, wherein the trough surface axis of each of the first and second trough surfaces respectively forms an angle of about and between about 130°

to 100°

with respect to the top surface of the trough.

53. The light fixture of claim 49, wherein the light source is positioned therein the trough such that the light longitudinal axis of the light source is positioned above a plane extending between the lower edges of the respective first and second side trough surfaces.

54. The light fixture of claim 49, wherein the light source is positioned therein the trough such that the light longitudinal axis of the light source is positioned substantially about or above an arcuate section extending between the lower edges of the respective first and second side trough surfaces, wherein the arcuate section has substantially the same radius as the concave hollow.

55. The light fixture of claim 38, wherein at least a portion of the base surface of the base member has a plurality of male ridges formed thereon that extend longitudinally between the first and second end edges of the base member.

56. The light fixture of claim 38, wherein at least a portion of the base surface of the base member has a plurality of female grooves formed therein that extend longitudinally between the first and second end edges of the base member.

57. The light fixture of claim 37, wherein the light source is positioned substantially parallel to the longitudinal axis of the reflector assembly.

58. The light fixture of claim 49, wherein the elongated lens has a first arm that is connected to a first lens edge of the central lens portion and a second arm that is connected to a second lens edge of the central lens portion, a portion of the first arm constructed and arranged for being detachably secured to a portion of the first side trough surface and a portion of the second arm constructed and arranged for being detachable secured to a portion of the second side trough surface.

59. The light fixture of claim 58, wherein each of the first and second arms has a bottom portion connected to the respective first and second lens edges, the bottom portion extending substantially from a first end edge of the lens to an opposed second end edge of the lens.

60. The light fixture of claim 59, wherein a portion of the bottom portion of each of the first and second arms of the lens is detachably positioned adjacent a portion of the respective lower edges of the first and second side trough surfaces.

61. The light fixture of claim 60, wherein a portion of the bottom portion of each of the first and second arm of the lens is positioned at an acute angle with and overlies a portion of the curved reflective surface of the hollow adjacent to the respective lower edges of the first and second side trough surfaces.

62. The light fixture of claim 61, wherein the distance between the respective first and second lens edges of the lens is greater than the distance between the respective lower edges of the first and second side trough surfaces.

63. The light fixture of claim 62, wherein each of the respective first and second lens edges is spaced from and overlies a portion of the curved reflective surface of the hollow.

64. The light fixture of claim 49, wherein the respective first and second lens edges are positioned adjacent a portion of the respective lower edges of the first and second side trough surfaces.

65. The light fixture of claim 58, wherein each of the respective first and second side trough surfaces have at least one male protrusion extending inwardly into the trough, and wherein each of the first and second arms of the lens has an end portion having a hook shape that is constructed and arranged for detachable engagement with the at least one male protrusion in each respective first and second trough surfaces.

66. The light fixture of claim 58, wherein each of the respective first and second side trough surfaces defines at least one slot, and wherein each of the first and second arms of the lens has an end portion having a male protrusion that is constructed and arranged for detachable engagement with the at least one slot in each respective first and second trough surfaces.

67. The light fixture of claim 37, wherein the lens assembly further comprises a diffuser inlay positioned between the central lens portion and the light source.

68. The light fixture of claim 67, wherein the diffuser inlay is positioned in substantial overlying registration with the prismatic surface of the central lens portion.

69. The light fixture of claim 38, wherein the reflector assembly further includes a first end face and an opposed second end face, each of the respective first and second end faces having a top edge, the opposed first and second end faces each being positioned with respect to the base member such that a portion of the top edge of the respective end face is positioned in substantially overlying registration with a portion of the base surface, and wherein each of the respective first and second end faces has a face longitudinal axis that forms an obtuse angle with respect to the base longitudinal axis of the base member.

70. The light fixture of claim 69, wherein at least a portion of the top edge of the respective end faces is spaced from at least a portion of the respective proximal and distal edges of the base member.

71. The light fixture of claim 69, wherein the respective obtuse angles formed between the face longitudinal axis of the first end face and the base longitudinal axis and the face longitudinal axis of the second end face and the base longitudinal axis are substantially equal.

72. The light fixture of claim 69, wherein each of the first and second end faces is substantially planar.

73. The light fixture of claim 69, wherein the first and second faces each define an opening constructed and arranged to receive at least a portion of a selected end of the light source therethrough.

74. The light fixture of claim 69, wherein the first end edge of the elongated lens is in overlying registration with a portion of the first end face and wherein the second end edge of the elongated lens is in overlying registration with a portion of the second side surface.

75. The light fixture of claim 40, wherein at least a portion of the reflective surface of the hollow has a plurality of male ridges formed thereon that extend longitudinally between the proximal and distal ends of the base member.

76. The light fixture of claim 40, wherein at least a portion of the reflective surface of the hollow has a plurality of female grooves formed therein that extend longitudinally between the proximal and distal ends of the base member.

77. The light fixture of claim 37, wherein the linear light source is a T5 lamp.

78. The light fixture of claim 38, wherein the lens assembly is positioned within the reflector assembly such that it is recessed above a substantially horizontal plane extending between the first and second longitudinal side edges and such that the lens assembly is not visible at high viewing angles in a vertical plane normal to the base longitudinal axis.

79. The light fixture of claim 78, wherein the lens assembly is recessed within the reflector assembly such that a plane bisecting one of the respective first and second longitudinal side edges and a tangential portion of the lens is oriented at an acute angle γ

to the substantially horizontal plane extending between the first and second longitudinal side edges.

80. The light fixture of claim 79, wherein the acute angle γ

is about and between 3° and

30°

.

81. The light fixture of claim 79, wherein the acute angle γ

is about and between 5° and

20°

.

82. The light fixture of claim 79, wherein the acute angle γ

is about and between 10° and

15°

.

83. The light fixture of claim 58, wherein the lens assembly is positioned within the reflector assembly such that the light source is positioned below a plane bisecting one of the respective first or second longitudinally extending side edges and the adjacent respective first or second lens edges of the lens.

84. A light fixture, comprising:

a reflector assembly defining a longitudinally extending trough;

a linear light source releasably supported in the trough of the reflector assembly; and

a lens assembly comprising an elongated lens having a central lens portion that is curved in a plane transverse to the trough and a lens longitudinal axis that is generally parallel to the light longitudinal axis, the lens being constructed and arranged for detachable connection to a portion of the trough, the central lens portion having a prismatic surface that defines a face oriented toward and spaced from the light source,

wherein the lens of said lens assembly is positioned with respect to the trough of the reflector assembly such that substantially all of the light emitted by the light source passes through the lens, and wherein the reflector assembly controls high angle glare in the transverse direction by blocking high angle rays from the lens and the lens assembly controls high angle glare in the longitudinal direction optically.

85. The light fixture of claim 84, wherein at least a portion of the face of the central lens portion is concave.

86. The light fixture of claim 84, wherein at least a portion of the face of the central lens portion is convex.

87. The light fixture of claim 84, wherein the lens is positioned in overlying registration with the trough, and wherein the central lens portion of the lens is symmetric about a plane that extends through the light longitudinal axis.

88. The light fixture of claim 84, wherein the reflector assembly further comprises an elongated base member having a first end edge, a spaced second end edge, a first longitudinally extending side edge, an opposed second longitudinally extending side edge, a base surface, and a base longitudinal axis extending between the first and second end edges of the base member, a portion of the base surface of the base member defining at least one longitudinally extending hollow, each hollow having a longitudinally extending first hollow edge and a longitudinally extending second hollow edge, at least a portion of a section of the hollow normal to the base longitudinal axis having a generally curved, concave shape, each hollow extending inwardly to a central portion between the respective first and second hollow edges, wherein the central portion of the hollow defines the longitudinally extending trough, which extends inwardly and upwardly away from the surface of the hollow, wherein the portions of the hollow extending between the central portion and the respective first and second hollow edges forming a generally curved reflective surface, and wherein the central portion is generally symmetrically positioned with respect to the first and second hollow edges.

89. The light fixture of claim 88, wherein the respective first and second hollow edges extend to the respective first and second longitudinally extending side edges of the base member.

90. The light fixture of claim 88, wherein the base member defines a pair of adjoining, parallel hollows, a first hollow edge of a first hollow of the pair of hollows extending to the first side edge of the base member, a second hollow edge of a second hollow of the pair of hollows extending to the second side edge of the base member, and the second hollow edge of the first hollow and the first hollow edge of the second hollow being adjoined.

91. The light fixture of claim 88, wherein the trough has a top surface that adjoins a first side trough surface and an opposed second side trough surface, wherein each respective first and second side trough surfaces has an lower edge that is integral with a portion of the adjoined hollow, and wherein each of the first side trough surface and the second side trough surface has a trough surface axis that extends in a plane normal to the base longitudinal axis.

92. The light fixture of claim 91, wherein the trough surface axis of each of the first and second trough surfaces respectively forms an angle of about and between about 140°

to 90°

with respect to the top surface of the trough.

93. The light fixture of claim 91, wherein the trough surface axis of each of the first and second trough surfaces respectively forms an angle of about and between about 135°

to 95°

with respect to the top surface of the trough.

94. The light fixture of claim 91, wherein the trough surface axis of each of the first and second trough surfaces respectively forms an angle of about and between about 130°

to 100°

with respect to the top surface of the trough.

95. The light fixture of claim 91, wherein the light source is positioned therein the trough such that the light longitudinal axis of the light source is positioned above a plane extending between the lower edges of the respective first and second side trough surfaces.

96. The light fixture of claim 91, wherein the light source is positioned therein the trough such that the light longitudinal axis of the light source is positioned substantially about or above an arcuate section extending between the lower edges of the respective first and second side trough surfaces, wherein the arcuate section has substantially the same radius as the concave hollow.

97. The light fixture of claim 88, wherein the light source is positioned so that the light longitudinal axis is substantially parallel to the base longitudinal axis of the base member.

98. A light fixture having a linear light source in electrical communication with an external power source, comprising:

a reflector assembly comprising an elongated base member having a first end edge, a spaced second end edge, a first longitudinally extending side edge, an opposed second longitudinally extending side edge, a base top surface, an opposed base bottom surface, and a base longitudinal axis extending between the first end edge and the second end edge of the base member;

a housing having a first end wall connected to a portion of the first end edge of the base member, an opposed second end wall connected to a portion of the second end edge of the base member, and at least one angled cover having a first panel and a second panel, the first panel being connected to the second panel substantially along an angled edge, the first panel having a first side edge and the second panel having a second side edge, a first angled cover of the at least one angled cover having the first side edge connected to a portion of the first longitudinal side edge of the base member, the second side edge connected to a portion of the base top surface of the base member, the first angled cover extending between the first end wall and the second end wall so that portions of the first and second end walls, portions of the first angled cover and portions of the base top surface define a first ballast enclosure; and

at least one ballast for electrically connecting the light source to the external power source, the at least one ballast being positioned in the first ballast enclosure.

99. The light fixture of claim 98, wherein a portion of the first angled cover defines a first port adjacent the angled edge that is in communication with the first ballast enclosure, and further comprising a first closure plate constructed and arranged for releasable connection to the first angled cover such that, in a closed position, the first closure plate is in substantial registration with the first port and the at least one ballast positioned in the first ballast enclosure can be selectively enclosed.

100. The light fixture of claim 99, wherein at least a portion of the first port is defined in a portion of the second panel of the first angled cover.

101. The light fixture of claim 99, wherein at least a portion of the first port is defined in a portion of the first panel of the first angled cover and is spaced from the first side edge of the first panel a predetermined distance.

102. The light fixture of claim 101, wherein at least a portion of the first port is defined in a portion of the second panel of the first angled cover.

103. The light fixture of claim 98, wherein the first end wall is substantially perpendicular to the base member adjacent the first end edge of the base member and the second end wall is substantially perpendicular to the base member adjacent the second end edge of the base member.

104. The light fixture of claim 98, wherein the first and second panels of the at least one angled cover are substantially perpendicular to each other.

105. The light fixture of claim 98, wherein the first panel of the first angled cover is substantially perpendicular to the base member adjacent the first longitudinally extending side edge of the base member.

106. The light fixture of claim 98, wherein the reflector assembly further comprises a first end face and an opposed second end face, each of the respective first and second end faces having a top edge, the opposed first and second end faces each being positioned with respect to the base member such that a portion of the top edge of the respective end face is positioned in substantially overlying registration with a portion of the base bottom surface and spaced from the respective proximal and distal edges of the base member.

107. The light fixture of claim 106, wherein each of the respective first and second end faces has a face longitudinal axis that forms an obtuse angle with respect to the base longitudinal axis of the base member.

108. The light fixture of claim 106, wherein a portion of a bottom edge of the first end face is connected to a bottom portion of the first end wall of the housing and a portion of a bottom edge of the second end face is connected to a bottom portion of the second end wall.

109. The light fixture of claim 108, wherein the first end wall and the first end face are formed integral to each other, and wherein the second end wall and the second end face are formed integral to each other.

110. The light fixture of claim 105, wherein the first and second faces each define an opening constructed and arranged to receive at least a portion of a selected end of the light source therethrough.

111. The light fixture of claim 110, wherein the respective first and second end faces, the respective first and second end walls, and the base bottom surface of the base member each define a chamber adjacent the respective top edges of the first and second faces that is in operative communication with the opening in the respective first and second faces.

112. The light fixture of claim 111, wherein each of the respective chambers is constructed and arranged to receive at least a portion of the light source therein.

113. The light fixture of claim 112, wherein each chamber is constructed and arranged to mount an electrical contact for detachably securing the light source thereto, the electrical contact in electrical communication with the ballast.

114. The light fixture of claim 113, wherein the electrical contact is mounted onto a portion of the base bottom surface of the base member.

115. The light fixture of claim 99, wherein a second angled cover of the at least one angled cover has the first side edge connected to a portion of the second longitudinal side edge of the base member, the second side edge connected to a portion of the base top surface of the base member, the second angled cover extending between the first end wall and the second end wall such that portions of the first and second end walls, portions of the second angled cover, and portions of the base top surface define a second ballast enclosure, and wherein a second ballast of the at least one ballast is in electrical communication with the light source and is positioned within the second ballast enclosure.

116. The light fixture of claim 115, wherein a portion of the second angled panel defines a second port adjacent the angled edge that is in communication with the second ballast enclosure, and further comprising a second closure plate constructed and arranged for releasable connection to the second angled panel such that, in a closed position, the second closure plate is in substantial registration with the second port and the second ballast of the at least one ballast positioned within the second ballast enclosure can be selectively enclosed.

117. The light fixture of claim 116, wherein at least a portion of the second port is defined in a portion of the first panel of the second angled cover and is spaced from the first side edge of the first panel a predetermined distance.

118. The light fixture of claim 117, wherein at least a portion of the second port is defined in a portion of the second panel of the second angled cover.

119. The light fixture of claim 117, wherein at least a portion of the second port is defined in a portion of the second panel of the second angled cover.

120. A light fixture, comprising:

a reflector assembly extending along a longitudinal axis; and

a linear light source having at least one end, the linear light source mounted within a portion of the reflector assembly,

wherein the reflector assembly comprises at least one end face defining an opening constructed and arranged for receiving at least a portion of the at least one end of the linear light source, the at least one end face forming an obtuse angle with respect to the longitudinal axis of the reflector assembly.

121. A light fixture, comprising:

a reflector assembly comprising an elongated base member having a first end edge, a spaced second end edge, a first longitudinally extending side edge, an opposed second longitudinally extending side edge, a base surface, and a base longitudinal axis extending between the first end edge and the second end edge, a portion of the base surface of the base member defining at least one longitudinally extending hollow, each hollow having a longitudinally extending first hollow edge and a longitudinally extending second hollow edge, at least a portion of a section of the hollow normal to the base longitudinal axis having a generally curved, concave shape, each hollow extending inwardly to a central portion between the respective first and second hollow edges, the central portion of the hollow defining a longitudinally extending trough that extends inwardly away from the surface of the hollow, the portions of the hollow extending between the central portion and the respective first and second hollow edges forming a generally curved reflective surface;

a linear light source housed substantially therein the trough of the reflector assembly and having a light longitudinal axis; and

a lens assembly comprising an elongated lens that has a lens longitudinal axis that is generally parallel to the light longitudinal axis and a central lens portion that is curved in a plane that is transverse to the lens longitudinal axis, the lens being constructed and arranged for detachable connection to a portion of the trough of the base member, the central lens portion having a prismatic surface that defines a face oriented toward and spaced from the light source,

wherein the lens of said lens assembly is positioned with respect to the trough of the reflector assembly such that substantially all of the light emitted by the light source passes through the lens, and wherein the reflector assembly controls high angle glare in the transverse direction by blocking high angle rays from the lens and the lens assembly controls high angle glare in the longitudinal direction optically.

122. A reflector assembly for a light fixture, comprising:

a first end face, an opposed second end face, and an elongated base member having a first end edge, a spaced second end edge, a base surface, and a base longitudinal axis extending between the first and second end edges, each of the respective first and second end faces having a top edge, the opposed first and second end faces each being positioned with respect to the base member such that a portion of the top edge of the respective end face is positioned in substantially overlying registration with a portion of the base surface, wherein each of the respective first and second end faces has a face longitudinal axis that forms an obtuse angle with respect to the longitudinal axis of the base member.