Diffractive optical relay and method for manufacturing the same
First Claim
Patent Images
1. An optical relay device, comprising:
- a substrate, made at least in part of a light transmissive polymeric material characterized by a birefringence, Δ
n, satisfying the inequality |Δ
n|<
ε
, wherein ε
is lower than the birefringence of polycarbonate; and
at least one diffractive optical element located on at least one surface of said substrate.
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Abstract
An optical relay device, comprising a substrate, and at least one diffractive optical element is disclosed. The substrate is made, at least in part, of a light transmissive polymeric material characterized by a birefringence, Δn, satisfying the inequality |Δn|<ε, where ε is lower than the birefringence of polycarbonate. In a preferred embodiment, the light transmissive polymeric material comprises a cycloolefin polymer or a cycloolefin copolymer.
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Citations
47 Claims
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1. An optical relay device, comprising:
-
a substrate, made at least in part of a light transmissive polymeric material characterized by a birefringence, Δ
n, satisfying the inequality |Δ
n|<
ε
, wherein ε
is lower than the birefringence of polycarbonate; andat least one diffractive optical element located on at least one surface of said substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for providing an image to a user, comprising an optical relay device for transmitting an image into at least one eye of the user, and an image generating system for providing said optical relay device with collimated light constituting said image,
said optical relay device comprising: -
a substrate, made at least in part of a light transmissive polymeric material characterized by a birefringence, Δ
n, satisfying the inequality |Δ
n|<
ε
, wherein ε
is lower than the birefringence of polycarbonate, anda plurality of diffractive optical elements located on at least one surface of said substrate. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method of manufacturing an optical relay device having at least one linear grating, comprising:
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forming a mold having at least one pattern corresponding to an inverted shape of the at least one linear grating; and contacting said mold with a light transmissive polymeric material characterized by a birefringence, Δ
n, satisfying the inequality |Δ
n|<
ε
, wherein ε
is lower than the birefringence of polycarbonate, so as to provide a substrate having the at least one linear grating formed on at least one surface thereof. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification