Variable power optical system and image-recording device

Details Variable power optical system and image-recording device Variable power optical system and image-recording device

2005-09-12

2009-06-30

Ben, Loha (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S813000, C359S823000, C359S698000, C396S379000

Reexamination Certificate

active

07554749

ABSTRACT:
A variable power optical system composed of a first optical part (G1) for refraction, a second optical part (G2) for reflection or transmission, and a third optical part (G3) for refraction, with the first optical part being movable with respect to the second and third optical parts to change the focal length of the entire system, wherein the second optical part or the third optical part has a guide4which is in contact partly with the first optical part in such a way as to restrict its moving direction and the first optical part is movably held between the second optical part and the third optical part. This structure eliminates the necessity of separately forming the guide to move G1. The guide4is formed from a synthetic resin integrally with the stationary optical part (G3).

REFERENCES:
patent: 3259039 (1966-07-01), Okajima
patent: 4708442 (1987-11-01), Fujii et al.
patent: 5765049 (1998-06-01), Hase et al.
patent: 6288838 (2001-09-01), Ito
patent: 6515807 (2003-02-01), Noguchi
patent: 7038859 (2006-05-01), Tsuzuki
patent: 7085073 (2006-08-01), Han et al.
patent: 62-116911 (1987-05-01), None
patent: 62-116911 (1987-05-01), None
patent: 07-020367 (1995-01-01), None
patent: 11-258678 (1999-09-01), None
patent: 2001-333315 (2001-11-01), None
patent: 2003-222935 (2003-08-01), None
patent: 2004-163751 (2004-06-01), None
Australian Patent Office Examination Report; Application No. SG 200603407-8; Dated: Sep. 12, 2005.
PCT International Search Report mailed on Dec. 27, 2005.
Notification of Transmittal of Copies of Translation of the International Preliminary Report on Patentability; International Application No. PCT/JP2005/016725; Filing Date: Sep. 12, 2005.
Japanese Office Action issued Feb. 12, 2009 for corresponding Japanese Application No. 2004-305437.

Affiliated with

Also associated with

Rating

Variable power optical system and image-recording 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 Variable power optical system and image-recording device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable power optical system and image-recording device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4109886