Infrared illumination system for digital camera

Details Infrared illumination system for digital camera Infrared illumination system for digital camera

1996-08-19

1997-12-23

Nguyen, Kiet T.

Radiant energy

Radiant energy generation and sources

Plural radiation sources

2504941, 250504R, 250504H, 396109, H05B 4129

Patent

active

057010153

ABSTRACT:
An infrared illumination system for a digital camera having a taking lens, includes: a plurality of infrared emitting diodes arranged around the taking lens, each diode being contained in a can having an infrared transparent window; a first diffuser located over the windows of the cans; and a second diffuser spaced apart from the first diffusers. The first diffuser is a new type of diffuser called a Fourier transform holographic diffuser.

REFERENCES:
patent: 4866285 (1989-09-01), Simms
patent: 4958180 (1990-09-01), Matsui et al.
patent: 4969004 (1990-11-01), Matsui et al.

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