Light collector and its use for spectroscopic purposes
First Claim
1. An optical device for emitting a substantially parallel light beam bundle, comprising:
- a concave reflector having a plane of symmetry;
a light source mounted at a focal point of said reflector and defining a source area;
a retroreflector at least partially covering a concave portion of said reflector and arranged such that at least some light beams emitted from said light source are reflected back into said source area;
an opening in said retroreflector at an intersection of said plane of symmetry and said retroreflector;
mounting means for supporting said light source in said reflector, said mounting means intersecting said reflector at a location spaced from a point on said reflector in said plane of symmetry and opposite said opening; and
a body influencing characteristics of irradiated light arranged between the light source and the retroreflector.
1 Assignment
0 Petitions
Accused Products
Abstract
The device for collecting the radiation of a light source (20) within a concave mirror comprises a cylindrical or rotationally symmetrical parabolic or elliptical reflector (10'"'"'), which is covered with a curved or planar retroreflector (40) having an opening (42). The retroreflector (40) returns part of the light into the vicinity of the source (20) and brings about, due to the partial transparency of this area, that an intense, quasi-parallel light beam can be coupled out through opening (42). After passing through a monochromator element (31), this light can e.g. be supplied to a gas measuring cell (68). The optical efficiency of the device is increased by the concave mirror (57) in a shape supplementing reflector (10'"'"', 10"). The measuring signal can be determined by means of a light detector or a microphone (69). In the latter case, an acoustically decoupling gas exchange device is required, which can e.g. be realized by means of capillaries filled with the liquid (75, 75'"'"').
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Citations
39 Claims
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1. An optical device for emitting a substantially parallel light beam bundle, comprising:
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a concave reflector having a plane of symmetry; a light source mounted at a focal point of said reflector and defining a source area; a retroreflector at least partially covering a concave portion of said reflector and arranged such that at least some light beams emitted from said light source are reflected back into said source area; an opening in said retroreflector at an intersection of said plane of symmetry and said retroreflector; mounting means for supporting said light source in said reflector, said mounting means intersecting said reflector at a location spaced from a point on said reflector in said plane of symmetry and opposite said opening; and a body influencing characteristics of irradiated light arranged between the light source and the retroreflector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An optical device for emitting a substantially parallel light beam bundle, comprising:
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a concave reflector having a plane of symmetry and being part of an elliptical cylinder; a light source mounted at a focal point of said reflector and defining a source area; a retroreflector at least partially covering a concave portion of said reflector and arranged such at at least some light beams emitted from said light source are reflected back into said source area, the retroreflector being formed with the same elliptical curve as the reflector; an opening in said retroreflector at an intersection of said plane of symmetry and said retroreflector; mounting means for supporting said light source in said reflector, said mounting means intersecting said reflector at a location spaced from a point on said reflector in said plane of symmetry and opposite said opening, the light source being located in one area around two focal lines linear to a cylinder axis and being a filament; and additional lateral reflectors coupled to the reflector at an angle to the cylinder axis. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An optical device for emitting a substantially parallel light beam bundle, comprising:
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a concave reflector having a plane of symmetry; a light source mounted at a focal point of said reflector and defining a source area; a retroreflector at least partially covering a concave portion of said reflector and arranged such that at least some light beams emitted from said light source are reflected back into said source area; an opening in said retroreflector at an intersection of said plane of symmetry and said retroreflector; mounting means for supporting said light source in said reflector, said mounting means intersecting said reflector at a location spaced from a point on said reflector in said plane of symmetry and opposite said opening; and a body influencing characteristics of irradiated light arranged between the light source and the retroreflector, the retroreflector being elliptically curved. - View Dependent Claims (21, 22, 23)
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24. An optical device for emitting a substantially parallel light beam bundle, comprising:
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a concave reflector having a plane of symmetry; a light source mounted at a focal point of said reflector and defining a source area; a retroreflector at least partially covering a concave portion of said reflector and arranged such that at least some light beams emitted from said light source are reflected back into said source area; an opening in said retroreflector at an intersection of said plane of symmetry and said retroreflector; mounting means for supporting said light source in said reflector, said mounting means intersecting said reflector at a location spaced from a point on said reflector in said plane of symmetry and opposite said opening; and a light-influencing body located in a light beam path extending through the opening in retroreflector. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An optical device for emitting a substantially parallel light beam bundle, comprising:
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a concave parabolic reflector having a plane of symmetry and being a parabolic partial cylinder with a cylinder axis; a light source mounted at a focal point of said reflector and in an area about a focal line linear to the cylinder axis, and defining a source area; a planar retroreflector at least partially covering a concave portion of said reflector and arranged such that at least some light beams emitted from said light source are reflected back into said source area; an opening in said retroreflector at an intersection of said plane of symmetry and said retroreflector; mounting means for supporting said light source in said reflector, said mounting means intersecting said reflector at a location spaced from a point on said reflector in said plane of symmetry and opposite said opening; and additional lateral reflectors coupled to the reflector at an angle to the cylinder axis. - View Dependent Claims (35, 36, 37, 38, 39)
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Specification