Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1997-09-19
1999-12-28
Epps, Georgia
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359633, G02B 2714
Patent
active
060089458
ABSTRACT:
A display system including a retro-reflector, and optical means including a projection lens and an accommodation feature for directing light from an image source to the retro-reflector, light reflected by the retro-reflector being provided for viewing, said optical means and retro-reflector being cooperative to establish a conjugate optics path including the accommodation feature along which the light is directed to the eye or eyes of a viewer for viewing of an image, the accommodation feature includes a conjugation lens means and it and the retro-reflector are cooperatively positioned such that as light passes back through the conjugation lens means along the same path it would have followed had the retro-reflector been placed at the image plane of the projection lens had the conjugation lens means not been in position. A servo system for moving the projection lens and the retro-reflector according to a transfer function also may be included.
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Epps Georgia
Mack Ricky
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