Prism with no detrimental internal reflection

Details Prism with no detrimental internal reflection Prism with no detrimental internal reflection

Filed on

1985-06-06

Date issued

1987-01-06

Examiner

Henry, Jon W.

Other Related Categories

350286, G02B 504

Type

Patent

Status

active

Patent number

046342230

Description

ABSTRACT:
A prism partly of a solid glass block enclosed with inoperative planes is provided on the inoperative planes with transparent members each of which comprises a light transmission part and a light attenuation part having a great number of either superfine prismatic protuberances or small acute indentations formed over the whole outer surface thereof. The transparent member has a refractive index of n.sub.1 which satisfies the following condition:

REFERENCES:
patent: Re19070 (1934-02-01), Chvetien
patent: 2773411 (1956-12-01), Schwede
patent: 3603670 (1971-09-01), Kim
patent: 3648056 (1972-03-01), Buttweile et al.
patent: 3984157 (1976-10-01), LeVantine
patent: 4093354 (1978-06-01), Leeb
patent: 4165920 (1979-08-01), Brown

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