Optical mouse and resin lens unit

Details Optical mouse and resin lens unit Optical mouse and resin lens unit

1992-12-23

1995-10-31

Groody, James J.

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

345166, 250237R, 250229, 359649, H01J 314

Patent

active

054633877

ABSTRACT:
An optical mouse comprises an illumination system for converging light emitted from a light emitting element to a light pattern of a mouse pad, an image forming system for forming an image of the light pattern on the side of a light receiving element and an aspherical lens having a positive refractive index and formed with an aspherical surface in at least one surface thereof. The aspherical surface is used for the illumination system and/or the image forming system. In a preferred form, the aspherical lens is a single lens made of a synthetic resin for constituting the image forming system and satisfying the following optical conditions:

REFERENCES:
patent: 4647771 (1987-03-01), Kato
patent: 4751505 (1988-06-01), Williams et al.
patent: 4834502 (1989-05-01), Bristol et al.
patent: 4880967 (1989-11-01), Kwang-Chien
patent: 4935619 (1990-06-01), Heberle
patent: 4993816 (1991-02-01), Yoshioka et al.
patent: 5051736 (1991-09-01), Bennett et al.
patent: 5075541 (1991-12-01), Chien
patent: 5086197 (1992-02-01), Liou

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