Light detection device

Details Light detection device Light detection device

2007-07-03

2007-07-03

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S216000, C250S239000, C356S150000, C398S020000

Reexamination Certificate

active

11234748

ABSTRACT:
A light detection device for detecting an optical path position of invisible light. The detection device includes a main body and a light guide. The light guide includes a distal end functioning as a light incident portion through which the detected light enters and a light radiation portion from which visible light is emitted. A drive mechanism reciprocates the light guide in an X-direction while vibrating the light guide in a perpendicular Y-direction. The distal end of the light guide rod moves within a light detection area in an XY plane. A visible light-emitting unit radiates visible light from the distal end when the detected light enters the distal end. The visible light-emitting unit includes a photo-detector for detecting the detected light and a light-emitting element for generating the visible light when the photo-detector detects the detected light.

REFERENCES:
patent: 6828540 (2004-12-01), Landolt
patent: 7129472 (2006-10-01), Okawa et al.
patent: 05-023847 (1994-08-01), None

Affiliated with

Also associated with

Rating

Light detection device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light detection device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light detection device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3799559