Light control apparatus having a device for controlling the...

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C250S221000, C250S2140RC

Reexamination Certificate

active

07488925

ABSTRACT:
A light control apparatus includes a part for splitting an input light entering the light control apparatus through an optical fiber, a photoelectric conversion part for converting a monitor light into an electrical signal, and a third part for controlling the opening and closing of an optical transmission path for a signal light based on the electrical signal. The light power of an output light is controlled by the opening and closing amount of the optical transmission path which is controlled depending on the amount of the electrical signal output in accordance with the level of the monitor light. A semiconductor photovoltaic device capable of performing photoelectric conversion without using an external power source is used as the photoelectric conversion part. An optical shutter using a micromachine, or an optical device such as absorption-type modulator or refractive index-type modulator is used as the third part.

REFERENCES:
patent: 5086329 (1992-02-01), Newman
patent: 7049574 (2006-05-01), Takeuchi
patent: 7148469 (2006-12-01), Pearson
patent: 2002/0141021 (2002-10-01), Wyatt et al.
patent: 57-155503 (1982-09-01), None
patent: 62-80614 (1987-04-01), None
patent: 4-328510 (1992-11-01), None
patent: 5-297331 (1993-11-01), None
patent: 6-34894 (1994-02-01), None
patent: 7-15093 (1995-01-01), None
patent: 8-37499 (1996-02-01), None
patent: 9-247093 (1997-09-01), None
patent: 11-274547 (1999-10-01), None
patent: 11-281842 (1999-10-01), None
patent: 2000-216424 (2000-08-01), None
patent: 2003-270559 (2003-09-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Light control apparatus having a device for controlling the... 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 control apparatus having a device for controlling the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light control apparatus having a device for controlling the... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4059552

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.