Optical modules
First Claim
1. An optical apparatus comprisinga curved embedded ridged reflector module, wherein said module comprises an optical substrate and optical superstrate having inter-engaging ridged surfaces with a freeform profile, wherein the interengaging ridged surfaces comprise alternating first surfaces and second surfaces and wherein at least said first surfaces are freeform curved;
- a reflective layer formed on at least one of said surfaces;
said reflective layer being partially reflective and partially transmissive; and
a complementary lens configured to receive a projected image, from a projector, and directs output rays from the projector onto the ridged surfaces on a first side of said module,wherein said module and said complimentary lens are arranged in an off axis optical configuration and wherein said complimentary lens is freeformed to pre-compensate for optical aberrations and distortions resulting from the embedded ridge reflector module such that in use, an augmented image, comprising reflected rays from the projector and transmitted rays from an object located on a second side of the module, is correctly presented to a viewer located on a first side of the module without further conditioning of the reflected rays.
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Accused Products
Abstract
An optical module for head mounted displays and other applications comprises: an optical substrate and optical superstrate having inter-engaging ridged surfaces. A reflective layer is formed on at least one of the surfaces. An index matching material may be located between the surfaces. A region that receives a projected image, from a projector, directs rays launched from the projector onto the ridged surfaces, so that in use a viewer perceives an augmented image. The augmented image comprising reflected rays from the projector and transmitted rays from an object located on an opposite side of the module to that of the viewer.
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Citations
28 Claims
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1. An optical apparatus comprising
a curved embedded ridged reflector module, wherein said module comprises an optical substrate and optical superstrate having inter-engaging ridged surfaces with a freeform profile, wherein the interengaging ridged surfaces comprise alternating first surfaces and second surfaces and wherein at least said first surfaces are freeform curved; -
a reflective layer formed on at least one of said surfaces;
said reflective layer being partially reflective and partially transmissive; anda complementary lens configured to receive a projected image, from a projector, and directs output rays from the projector onto the ridged surfaces on a first side of said module, wherein said module and said complimentary lens are arranged in an off axis optical configuration and wherein said complimentary lens is freeformed to pre-compensate for optical aberrations and distortions resulting from the embedded ridge reflector module such that in use, an augmented image, comprising reflected rays from the projector and transmitted rays from an object located on a second side of the module, is correctly presented to a viewer located on a first side of the module without further conditioning of the reflected rays. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of fabricating an optical embedded ridged reflector apparatus comprises the steps of:
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forming a curved embedded ridged reflector module, wherein forming said curved embedded ridged reflector module comprises; forming an optical substrate and optical superstrate;
wherein forming said optical substrate and optical superstrate includes forming interengageable ridged surfaces with a freeform profile;
wherein forming said interengagable ridged surfaces with a freeform profile comprises forming alternating first surfaces and second surfaces;
said at least first surfaces being freeform curved;forming a reflective layer on at least one of said surfaces;
wherein forming the reflective layer comprises forming a partially reflecting and partially transmissive reflective layer; andplacing respective first and second inter-engagable ridged surfaces adjacent one another so as to achieve optical coupling; configuring a complimentary lens to receive a projected image, from a projector, and direct output rays from the projector onto the ridged surfaces on a first side of said curved embedded ridged reflector module, wherein configuring said complimentary lens includes freeforming said complimentary lens to pre-compensate for optical aberrations and distortions resulting from the embedded ridge reflector module; and arranging said module and said complimentary lens in an off axis optical configuration, whereby, in use, an augmented image, comprising reflected rays from the projector and transmitted rays from an object located on a second side of the module, is correctly presented to a viewer located on a first side of the module without further conditioning of the reflected rays. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification