Lens optical system and photoelectric encoder

Details Lens optical system and photoelectric encoder Lens optical system and photoelectric encoder

2007-06-26

2011-11-08

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

With support

C359S819000

Reexamination Certificate

active

08054565

ABSTRACT:
The present invention provides: a lens optical system having: a plastic lens; and a lens restraining member for mechanically restraining a thermal expansion of the plastic lens to control a variation of a curvature of lens due to a temperature change so as to suppress a variation of a focal position due to a temperature change; and a photoelectric encoder including the lens optical system.

REFERENCES:
patent: 3992240 (1976-11-01), Kuehn, Jr.
patent: 5114513 (1992-05-01), Hosokawa et al.
patent: 5159193 (1992-10-01), Shiraishi et al.
patent: 5617131 (1997-04-01), Murano et al.
patent: 6014232 (2000-01-01), Clarke
patent: 7002759 (2006-02-01), Hama et al.
patent: 7400461 (2008-07-01), Kageyama et al.
patent: 2002/0075566 (2002-06-01), Tutt et al.
patent: 2005/0231085 (2005-10-01), Song et al.
patent: 2008/0231965 (2008-09-01), Weekamp
patent: A-61-267001 (1986-11-01), None
patent: A-3-179420 (1991-08-01), None
patent: A-6-326831 (1994-11-01), None
patent: A 8-201674 (1996-08-01), None
patent: A 9-43508 (1997-02-01), None
patent: WO2005073779 (2005-01-01), None
Stefan Haselbeck et al.; “Microlenses Fabricated by Melting a Photoresist on a Base Layer.”;Optical Engineering; vol. 32, No. 6; Jun. 1993; pp. 1322-1324.
Japanese Patent Office, Reasons for Refusal for Japanese Patent Application No. 2006-175064 (with partial English translation), Feb. 9, 2011, pp. 1-3 (pp. 1-4 for partial translation).

Affiliated with

Also associated with

Rating

Lens optical system and photoelectric encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4276814