Embedded relay lens for head-up displays or the like

Details Embedded relay lens for head-up displays or the like Embedded relay lens for head-up displays or the like

2008-08-19

2010-02-02

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C353S011000, C349S011000

Reexamination Certificate

active

07656585

ABSTRACT:
Briefly, in accordance with one or more embodiments, an optical relay comprises a partially-reflective-coated Fresnel lens or similar low-profile lens such as a diffractive lens or a holographic lens having a first index of refraction and a filler medium having a second index of refraction and being disposed adjacent to the Fresnel lens. The optical relay enables the optical power of the Fresnel or similar low-profile lens embedded within the two layers to influence a beam that is reflected from the optical relay while allowing transmitted light to experience little or no influence from the embedded lens.

REFERENCES:
patent: 5625493 (1997-04-01), Matsumura et al.
patent: 6236511 (2001-05-01), Brown
patent: 2009/0059336 (2009-03-01), Dunphy et al.

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