Optical sensor with rotary shaft-driven light intercepting...

Details Optical sensor with rotary shaft-driven light intercepting... Optical sensor with rotary shaft-driven light intercepting...

2008-07-22

2008-07-22

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S239000

Reexamination Certificate

active

07402792

ABSTRACT:
An optical sensor includes a light receiving device disposed in a housing, an exterior filter rotatably mounted to an attachment surface of the housing, and a light intercepting member which rotates along with a rotation of the exterior filter to adjust an amount of light incident on a light receiving surface of the light receiving device. In this optical sensor, the light intercepting member has a rotary shaft fixed at its center, and has a light adjusting mechanism for adjusting the amount of light incident on the light receiving surface of the light receiving device in a range in a direction of rotation around the rotary shaft. Accordingly, the sensitivity of the optical sensor can be arbitrarily adjusted with a high accuracy.

REFERENCES:
patent: 3859617 (1975-01-01), Oka et al.
patent: 4849621 (1989-07-01), Yanase et al.
patent: A-A08-43194 (1996-02-01), None
patent: A-H09-126886 (1997-05-01), None
patent: A-H10-90055 (1998-04-01), None
patent: A-H11-72354 (1999-03-01), None
patent: B2-3504407 (2003-12-01), None
Notice of Preliminary Rejection from Korean Patent Office dated Apr. 17, 2007 for the corresponding Korean patent application No. 10-2006-0045842 (a copy and English translation thereof).
Notice of Preliminary Rejection dated Dec. 17, 2007 in corresponding Korean Patent Application No. 10-2006-0045842 (and English translation).
First Office Action dated Jan. 18, 2008 in corresponding Chinese Patent Application No. 200610078446.1 (and English translation).

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