Optical: systems and elements – Lens – Eyepiece
Reexamination Certificate
2005-12-27
2005-12-27
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
Eyepiece
C359S558000, C359S645000, C359S646000
Reexamination Certificate
active
06980365
ABSTRACT:
An optical system for use in a head-mounted display is provided which includes a microdisplay (4) and a magnifier (10) for producing a magnified image of the microdisplay for viewing by a human eye. The magnifier (10) includes a diffractive surface and has in order: a first element (1) having a first surface (S1) which is convex in the direction of the long conjugate, a block (3) of optical material, and a second element (2) having a second surface (S2) which is convex in the direction of the short conjugate. The first surface (S1) is preferably the diffractive surface. The magnifier provides a long eye relief, a large exit pupil, and a large field of view with a minimum of components.
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PCT Search Report on PCT/US2004/005103.
3M Innovative Properties Company
Jonas George W.
Sugarman Scott J.
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