Eyepiece optical system and eyepiece image display device

Details Eyepiece optical system and eyepiece image display device Eyepiece optical system and eyepiece image display device

1998-03-03

1999-11-16

Epps, Georgia

Optical: systems and elements

Lens

Eyepiece

359715, G02B 2500

Patent

active

059868163

ABSTRACT:
An eyepiece optical system for projecting a plane image on a two-dimensional display element onto an eyeball as an extended virtual image, comprises a first group of lenses G1 including a positive meniscus lens L1 having a concave face toward the eyeball, a both-face aspeherical lens L2 and a both-face aspherical lens L3 having both convex faces in the vicinity of center and positive paraxial refractive power; and a second group of lenses G2 including a both-face aspherical lens L4 having both concave faces in the vicinity of center and negative paraxial refractive power, the first and second groups of lenses being arranged in order from the side of the eyeball. An eyepiece image display device uses such an eyepiece optical system.

REFERENCES:
patent: 5568319 (1996-10-01), Kaneko et al.
patent: 5627680 (1997-05-01), Suzuki
patent: 5638213 (1997-06-01), Ueno
patent: 5684635 (1997-11-01), Sugawara
patent: 5691850 (1997-11-01), Arisaka
patent: 5726808 (1998-03-01), Suzuki
patent: 5757553 (1998-05-01), Sugawara
patent: 5764418 (1998-06-01), Sato et al.
patent: 5835279 (1998-10-01), Marshall et al.

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