Integration rod assemblies for image projectors
First Claim
1. An integrating rod module, comprising:
- a first integrating rod;
a second integrating rod;
a strap, said strap mechanically mated to the first integrating rod and the second integrating rod, such that the end of the first integrating rod is proximal to the end of the second integrating rod; and
such that the length of a combination of the first and second integrating rods provides a desired f-number to be employed in a portion of a given optical system.
1 Assignment
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Accused Products
Abstract
Integrating rod modules are disclosed comprising a plurality of single and/or solid integrating rods that are mated together by straps. Such modules tend to comprise a greater length than the single and/or solid integrating rods and provide good illumination to a modulator that light from a light source is transmitted through the integrating rod module. The straps may comprise a material (e.g., glass) that has substantially same or similar thermal characteristics as the integrating rods. The straps may be glued to the integrating rods by a glue having a substantially different (e.g., lower) index of refraction than the integrating rods, so as not to disturb the internal reflectance of the rods. The straps may be reinforced by braces that may allow the integrating rod module to be set within a projection display system at an angle substantially different from horizontal.
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Citations
20 Claims
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1. An integrating rod module, comprising:
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a first integrating rod; a second integrating rod; a strap, said strap mechanically mated to the first integrating rod and the second integrating rod, such that the end of the first integrating rod is proximal to the end of the second integrating rod; and such that the length of a combination of the first and second integrating rods provides a desired f-number to be employed in a portion of a given optical system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An image projection system, comprising:
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a light source; a modulator; and an integration rod module, the integration rod module transmitting light from said light source to the modulator; wherein the integration rod module further comprises; a first integrating rod, a second integrating rod, and a strap, said strap mechanically mated to the first integrating rod and the second integrating rod, such that the end of the first integrating rod is proximal to the end of the second integrating rod; and such that the length of a combination of the first and second integrating rods provides a desired f-number to be employed in a portion of a given optical system. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification