Optical encoder module

Details Optical encoder module Optical encoder module

2007-10-09

2007-10-09

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S239000

Reexamination Certificate

active

10344836

ABSTRACT:
An optical encoder module is employed to detect light modulated by a moveable member (e.g., code wheel). The optical encoder includes an emitter having a light-emitting element, and a transparent medium encapsulating the light-emitting element. The transparent medium has a convex aspherical external surface shaped so as to focus light received from the light-emitting element into a substantially collimated beam of light using a single refractive interface for illuminating the movable member. The optical encode module also includes a detector facing the emitter for detecting modulated light of the collimated beam transmitted through the movable member.

REFERENCES:
patent: 3903218 (1975-09-01), Humphrey
patent: 4190767 (1980-02-01), Crouse
patent: 4691101 (1987-09-01), Leonard
patent: 4915484 (1990-04-01), Yamamoto
patent: D329193 (1992-09-01), Togami et al.
patent: 5241172 (1993-08-01), Lugaresi
patent: 5289082 (1994-02-01), Komoto
patent: 5291038 (1994-03-01), Hanamoto et al.
patent: 5317149 (1994-05-01), Uebbing et al.
patent: 5495358 (1996-02-01), Bartig et al.
patent: 5589930 (1996-12-01), Kurahashi et al.
patent: 5841177 (1998-11-01), Komoto et al.
patent: 5898267 (1999-04-01), McDermott
patent: 5986788 (1999-11-01), Sasaki et al.
patent: 6335548 (2002-01-01), Roberts et al.
patent: 6410911 (2002-06-01), Omi
patent: 6617615 (2003-09-01), Ueda
patent: 6627869 (2003-09-01), Tanaka et al.
patent: 6876471 (2005-04-01), Konno
patent: 6979104 (2005-12-01), Brass et al.
patent: 2003/0156842 (2003-08-01), Morimoto et al.
patent: 2004/0165277 (2004-08-01), Ng et al.
patent: 61254915 (1986-11-01), None
patent: 01109317 (1989-04-01), None
patent: 05029660 (1993-02-01), None
patent: 06-012677 (1994-01-01), None
patent: 06-224859 (1994-08-01), None
patent: 09258099 (1997-10-01), None
patent: 10178393 (1998-06-01), None
patent: 2000294832 (2000-10-01), None
patent: 2000294838 (2000-10-01), None
Japan Office Action dated Mar. 14, 2006 involving Japan Application No. 2004-041597 (co-pending application).
English translation of Japan Office Action dated Mar. 14, 2006 involving Japan Application No. 2004-041597 (co-pending application).

Affiliated with

Also associated with

Rating

Optical encoder module does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3883791