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Lamp optic for use in LED-based lamp

  • US 9,638,392 B2
  • Filed: 09/25/2015
  • Issued: 05/02/2017
  • Est. Priority Date: 09/25/2015
  • Status: Active Grant
First Claim
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1. A lamp optic (100), comprising:

  • a proximal end (104), a distal end (106) and a longitudinal axis (L) extending from the proximal end (104) to the distal end (106);

    the proximal end (104) being configured to receive light from at least one light emitting diode (102), the proximal end (104) having a proximal inner side wall (112) linearly extending toward the distal end (106) and intersecting a proximal flat portion (114), the proximal flat portion (114) extending transverse to the longitudinal axis (L) and having a proximal flat portion length (LP) in a plane perpendicular to a plane bisecting the lamp optic (100) and including the longitudinal axis (L), the proximal flat portion length (LP) measured from the proximal inner side wall (112) on a first side of the longitudinal axis (L) to the proximal inner side wall (112) on an opposite side of the longitudinal axis (L);

    the distal end (106) having a distal inner side wall (120) linearly extending toward the proximal end (104) and intersecting a distal flat portion (122), the distal flat portion (122) extending transverse to the longitudinal axis (L), the distal flat portion (122) having a distal flat portion length (LD) in the plane perpendicular to a plane bisecting the lamp optic (100) and including the longitudinal axis (L), the distal flat portion length (LD) measured from the distal inner side wall (120) on a first side of the longitudinal axis (L) to the distal inner side wall (120) on an opposite side of the longitudinal axis (L);

    the distal flat portion length (LD) being at least 25 percent of the proximal flat portion length (LP); and

    a lateral side (108) extending from the proximal end (104) to the distal end (106), the lateral side (108) having a first skirt region (124) and a second skirt region (126), the first skirt region (124) and the second skirt region (126) extending linearly and successively from the proximal end (104) to the distal end (106);

    whereby the lamp optic (100) is configured to receive a first portion of light from the at least one light emitting diode (102) through the proximal inner side wall (112) of the proximal end (104) and emit the first portion of the light from the first skirt region (124) of the lateral side (108), and whereby the lamp optic (100) is configured to receive a second portion of the light from the at least one light emitting diode (102) through the proximal flat portion (114) of the proximal end (104), guide the second portion of the light to be reflected by the distal inner side wall (120) of the distal end (106) and emit the second portion of the light from the second skirt region (126) of the lateral side (108), and whereby the lamp optic (100) is configured to receive a third portion of the light from the at least one light emitting diode (102) through the proximal flat portion (114) of the proximal end (104) and emit the third portion of the light from the distal flat portion (122) of the distal end (106).

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