Image display unit and projection optical system

Details Image display unit and projection optical system Image display unit and projection optical system

2006-06-27

2006-06-27

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C359S630000, C359S631000, C359S633000, C345S007000

Reexamination Certificate

active

07068444

ABSTRACT:
An intermediate image of an image from the LCD module142is deflected by reflection mirrors M1and M2via zoom automatic focus control system (g) and then is formed on diffusion glass131via relay lens (b) and reflection mirrors M3and M4. The LCD image is projected on the retina of eyeballs via eyepiece lens132by the light flux diffused at an order of ±20 degrees by diffusion glass131. One side of the eyepiece lens132close to the crystal balls2has an aspherical shape of a Conic surface and a Conic coefficient of the Conic surface is −1 and less. Thereby the optical system that has a viewing angle of 60 degrees and over and has a small aberration can be obtained.

REFERENCES:
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patent: WO 00/79325 (2000-12-01), None

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