Resin lens array and optical writing head

Details Resin lens array and optical writing head Resin lens array and optical writing head

2007-03-06

2007-03-06

Spector, David N. (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

C359S811000

Reexamination Certificate

active

10488023

ABSTRACT:
Cone-shaped projections are provided outside a lens forming area in the middle on one surface of a resin lens plate and depressions to be fitted to these projections are formed on the other surface. A resin lens array is formed by stacking the resin lens plates one over another through fitting these projections and depressions to each other. A fitting depression having a flat supporting seat face at a position on an optical path of light emitted by light-emitting elements of a light-emitting element array chip is formed in the lens holder, and the resin lens array is placed in the fitting depression. A transparent cover composed of a flat and smooth plate is arranged over the output surface of the resin lens array and a metal retainer is attached to the transparent cover so that a pressing pressure is always applied to the resin lens array.

REFERENCES:
patent: 5403102 (1995-04-01), Yokoyama
patent: 6545811 (2003-04-01), Fujimoto
patent: 01-122463 (1989-05-01), None
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patent: 2000-295445 (2000-10-01), None
patent: 2001-018451 (2001-01-01), None
patent: WO/0045199 (2000-08-01), None
patent: WO 00/58762 (2000-10-01), None
International Search Report dated Dec. 17, 2002, application No. PCT/JP02/09749.

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