TIR light valve
First Claim
Patent Images
1. A light valve device comprising:
- an array of light valves, at least one of the light valves including;
a light bending mechanism having an index of refraction greater than an index of refraction of an area adjacent to the light bending mechanism, so that light projected onto a first surface of the light bending mechanism is reflected off a second surface of the light bending mechanism;
a switch element including at least one serrated reflecting surface; and
a moving mechanism to move the at least one serrated reflecting surface of the switch element relative to the second surface of the light bending mechanism,wherein when the switch element is in a first position, light passing through the first surface of the light bending mechanism reflects off of the second surface of the light bending mechanism and passes through an output surface of the light bending mechanism, andwhen the switch element is in a second position, the at least one serrated reflecting surface is moved to a position touching or in close proximity to the second surface of the light bending mechanism, so that light passing through the first surface of the light bending mechanism is not reflected off the second surface, but rather continues on to the at least one serrated reflecting surface of the switch element, the at least one serrated reflecting surface reflecting the light.
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Accused Products
Abstract
An array of light valves switch light by enabling and disabling total internal reflection (TIR) on a surface of the light valve. The disabling of the TIR is accomplished by putting another optical element in contact with the surface and then diffusing or changing the direction of the light. The mechanical mechanism to move the optical element is a simple one in that it only moves the optical element a small distance to change the valve from a first position to a second position.
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Citations
39 Claims
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1. A light valve device comprising:
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an array of light valves, at least one of the light valves including; a light bending mechanism having an index of refraction greater than an index of refraction of an area adjacent to the light bending mechanism, so that light projected onto a first surface of the light bending mechanism is reflected off a second surface of the light bending mechanism; a switch element including at least one serrated reflecting surface; and a moving mechanism to move the at least one serrated reflecting surface of the switch element relative to the second surface of the light bending mechanism, wherein when the switch element is in a first position, light passing through the first surface of the light bending mechanism reflects off of the second surface of the light bending mechanism and passes through an output surface of the light bending mechanism, and when the switch element is in a second position, the at least one serrated reflecting surface is moved to a position touching or in close proximity to the second surface of the light bending mechanism, so that light passing through the first surface of the light bending mechanism is not reflected off the second surface, but rather continues on to the at least one serrated reflecting surface of the switch element, the at least one serrated reflecting surface reflecting the light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A light valve device comprising:
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an array of light valves, at least one of the light valves including; a light bending mechanism having an index of refraction greater than an index of refraction of an area adjacent to the light bending mechanism, so that light projected onto a first surface of the light bending mechanism is reflected off a second surface of the light bending mechanism; a switch element including a reflecting surface; and a moving mechanism to move the reflecting surface of the switch element relative to the second surface of the light bending mechanism, wherein when the switch element is in a first position, light passing through the first surface of the light bending mechanism reflects off of the second surface of the light bending mechanism and passes through an output surface of the light bending mechanism, and when the switch element is in a second position, the reflecting surface is moved to a position touching or in close proximity to the second surface of the light bending mechanism, so that light passing through the first surface of the light bending mechanism is not reflected off the second surface, but rather continues on to a surface of the switch element, and light is absorbed by the switch element. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A light valve device comprising:
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an array of light valves, at least one of the light valves including; a light bending mechanism having an index of refraction greater than an index of refraction of an area adjacent to the light bending mechanism, so that light projected onto a first surface of the light bending mechanism is reflected off a second surface of the light bending mechanism; a switch element including a reflecting surface; and a moving mechanism to move the reflecting surface of the switch element relative to the second surface of the light bending mechanism, wherein when the switch element is in a first position, light passing through the first surface of the light bending mechanism reflects off of the second surface of the light bending mechanism and passes through an output surface of the light bending mechanism, and when the switch element is in a second position, the reflecting surface is moved to a position touching or in close proximity to the second surface of the light bending mechanism, so that light passing through the first surface of the light bending mechanism is not reflected off the second surface, but rather continues on to a surface of the switch element, the switch element diffusing light. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A light valve device comprising:
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an array of light valves, at least one of the light valves including; a light bending mechanism having an index of refraction greater than an index of refraction of an area adjacent to the light bending mechanism, so that light projected onto a first surface of the light bending mechanism is reflected off a second surface of the light bending mechanism; a switch element including a reflecting surface; and a moving mechanism to move the reflecting surface of the switch element relative to the second surface of the light bending mechanism, wherein at least one switch element has a diffuse topography so that no light is reflected to the output surface of the light bending mechanism, wherein when the at least one switch element is in a first position, light passing through the first surface of the light bending mechanism reflects off of the second surface of the light bending mechanism and passes through an output surface of the light bending mechanism, and when the at least one switch element is in a second position, the reflecting surface is moved to a position touching or in close proximity to the second surface of the light bending mechanism, so that light passing through the first surface of the light bending mechanism is not reflected off the second surface, but rather continues on to a surface of the at least one switch element. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A light valve device comprising:
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an array of light valves, at least one of the light valves including; a light bending mechanism having an index of refraction greater than an index of refraction of an area adjacent to the light bending mechanism, so that light projected onto a first surface of the light bending mechanism is reflected off a second surface of the light bending mechanism; a switch element including a reflecting surface; and a moving mechanism to move the reflecting surface of the switch element relative to the second surface of the light bending mechanism, wherein at least one surface of at least one light bending mechanism is coated with an elastic material to ensure that a gap between the at least one light bending mechanism and the switch element is sufficiently narrow, wherein when the switch element is in a first position, light passing through the first surface of the light bending mechanism reflects off of the second surface of the light bending mechanism and passes through an output surface of the light bending mechanism, and when the switch element is in a second position, the reflecting surface is moved to a position touching or in close proximity to the second surface of the light bending mechanism, so that light passing through the first surface of the light bending mechanism is not reflected off the second surface, but rather continues on to a surface of the switch element. - View Dependent Claims (32, 33, 34, 35)
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36. A light valve device comprising:
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an array of light valves, at least one of the light valves including; a light bending mechanism having an index of refraction greater than an index of refraction of an area adjacent to the light bending mechanism, so that light projected onto a first surface of the light bending mechanism is reflected off a second surface of the light bending mechanism; a switch element including a reflecting surface; and a moving mechanism to move the reflecting surface of the switch element relative to the second surface of the light bending mechanism, wherein at least one surface of at least one switch element is coated with an elastic material to ensure that a gap between the light bending mechanism and the at least one switch element is sufficiently narrow, wherein when the at least one switch element is in a first position, light passing through the first surface of the light bending mechanism reflects off of the second surface of the light bending mechanism and passes through an output surface of the light bending mechanism, and when the at least one switch element is in a second position, the reflecting surface is moved to a position touching or in close proximity to the second surface of the light bending mechanism, so that light passing through the first surface of the light bending mechanism is not reflected off the second surface, but rather continues on to a surface of the at least one switch element. - View Dependent Claims (37, 38, 39)
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Specification