Substrate guided relay with pupil expanding input coupler

Details Substrate guided relay with pupil expanding input coupler Substrate guided relay with pupil expanding input coupler

2011-05-24

2011-05-24

Sanghavi, Hemang (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S037000

Reexamination Certificate

active

07949214

ABSTRACT:
An optical substrate guided relay (300) includes an optical substrate (302) having at least one major face (411), an output coupler (303) coupled to a major face (411,412), and an input coupler (301) coupled to a major face (411,412). The input coupler (301) is configured to reflect, via internal layers (414), portions of received light to the optical substrate302. The input coupler (301) includes either one or more internal layers (414) or a contoured face (1040) with surfaces configured as reflectors that expand the received light and direct it into the optical substrate (302). The output coupler (303) expands a pupil of light in one direction and directs the expanded light away from the optical substrate guided relay.

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