Illuminator
First Claim
1. An illuminator comprising:
- a concave mirror to reflect incident light in a predetermined direction;
an inner reflective mirror provided on an optical axis of the concave mirror and having a reflective surface on at least one surface thereof;
a light source installed on at least one surface of the inner reflective mirror to generate and illuminate light; and
a retro-reflective mirror provided at a focal point of a light reflected from the concave mirror, or in a vicinity of the focal point, and having an aperture through which some of light illuminated from the light source and reflected by the concave mirror passes and a retro-reflective surface to reflect remaining light not passing through the aperture back toward the concave mirror.
1 Assignment
0 Petitions
Accused Products
Abstract
An illuminator includes a concave mirror to reflect incident light in a predetermined direction, an inner reflective mirror provided on an optical axis of the concave mirror and having a reflective surface at least one surface thereof, a light source installed on at least one surface of the inner reflective mirror to generate and illuminate light, and a retro-reflective mirror provided at a focal point of the light reflected from the concave mirror, or in a vicinity of the focal point, and having an aperture through which some of the light illuminated from the light source and reflected by the concave mirror passes and a retro-reflective surface to reflect remaining light not passing through the aperture back toward the concave mirror.
65 Citations
44 Claims
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1. An illuminator comprising:
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a concave mirror to reflect incident light in a predetermined direction; an inner reflective mirror provided on an optical axis of the concave mirror and having a reflective surface on at least one surface thereof; a light source installed on at least one surface of the inner reflective mirror to generate and illuminate light; and a retro-reflective mirror provided at a focal point of a light reflected from the concave mirror, or in a vicinity of the focal point, and having an aperture through which some of light illuminated from the light source and reflected by the concave mirror passes and a retro-reflective surface to reflect remaining light not passing through the aperture back toward the concave mirror. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 37, 38, 39)
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14. An illuminator comprising:
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a first concave mirror having first and second focal points and having a partially oval shape to reflect light incident thereon from the first focal point and a vicinity of the first focal point to proceed toward the second focal point and the vicinity of the second focal point; a first inner reflective mirror disposed on an optical axis of the first concave mirror to reflect incident light toward the first concave mirror; a first light source installed substantially at the first focal point on the first inner reflective mirror to generate and emit light; a retro-reflective mirror provided in the vicinity of the second focal point and having an aperture to pass some of light illuminated from the first light source and reflected by the first concave mirror therethrough and a retro-reflective surface to reflect remaining light of the incident light; a second concave mirror arranged to face the first concave mirror, having a partially oval shape, and having a third focal point and a fourth focal point substantially disposed at the same position of the second focal point, to focus light from the retro-reflection surface on the third focal point or a vicinity of the third focal point and to reflect light incident thereon from the third focal point or the vicinity of the third focal point toward the fourth focal point; and a second inner reflective mirror disposed on an optical axis of the second concave mirror to reflect incident light toward the second concave mirror. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An illuminator, comprising:
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a concave reflecting unit to reflect light incident thereon toward a vicinity of a target point and having a concave reflecting unit divider to divide the concave reflecting unit into a first concave reflecting unit and a second concave reflecting unit; and a retro-reflecting unit including an aperture disposed at the target point to pass a portion of the light reflected from the concave reflecting unit therethrough and a retro-reflecting surface to reflect a remaining portion of the light reflected from the concave reflecting unit back towards the concave reflecting unit to be incident thereon. - View Dependent Claims (31, 32, 33, 40, 41, 42, 43, 44)
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34. An illuminator, comprising:
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a first reflecting unit to reflect light incident thereon to a target point and a vicinity of the target point; a second reflecting unit to reflect light incident thereon to the target point and the vicinity of the target point; and a retro-reflecting unit having an aperture disposed at the target point to pass a portion of the light emitted from the first and second reflecting units therethrough and a retro-reflective surface surrounding the aperture to reflect a portion of the light reflected by the first reflecting unit and not passing through the aperture toward the second reflecting unit and to reflect a portion of the light reflected by the second reflected unit and not passing through the aperture toward the first reflecting unit. - View Dependent Claims (35, 36)
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Specification