The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 08, 1994

Filed:

Nov. 13, 1992
Applicant:
Inventor:

Takaaki Miyashita, Yokohama, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359625 ; 359619 ; 359627 ; 359741 ;
Abstract

An image forming device is improved in that crosstalk between adjacent lenses is decreased thereby to improve an imaging power. In the image forming device a lens array has a plurality of lenses continuously formed. A roof prism array is also provided therein with a plurality of roof prisms respectively having a rectangular reflection plane and arranged at the same pitch as that of the lenses in the lens array. The lens array and the roof prism array are integrally formed of a plastic. A space portion, which is a portion unfilled with a resin, is formed between respective two adjacent roof prism lens pairs to prevent the crosstalk therebetween. Alternatively, a light shielding member may be integrally formed in front of the lens array to prevent the crosstalk.


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Miyashita, Takaaki. (1994). Image forming device and method for producing it (U.S. Patent No. 5363240). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5363240

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