BUILD-IN OBJECTIVE LENS FOR INFRARED HEAT IMAGE DEVICE

Title:

BUILD-IN OBJECTIVE LENS FOR INFRARED HEAT IMAGE DEVICE

Document Type and Number:

WIPO Patent Application WO/2003/098310

Kind Code:

A1

Abstract:

An build-in objective lens for infrared heat image device comprises of a lens frame (21), a first lens (15), the second lens (11), the third lens (10) and motor (31). The first and second lenses are installed in a holder (12) which is fixed with the lens frame (21) with a suitable distance, the third lens (10) installed in a focusing holder (8) movable axially between the lens frame (21) and the holder (12). The motor (31) is installed by a support (35) on the lens frame (21), engaged with the focusing holder (8) via a transmission mechanism. The present invention has advantages of sealing easy, compact size, light weight, stability, high image quality, and further being convenient to change the field angle.

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Inventors:

ZHAO FEIYU (CN)

Application Number:

PCT/CN2002/000497

Publication Date:

November 27, 2003

Filing Date:

July 12, 2002

Export Citation:

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Assignee:

GUANGZHOU SAT INFRARED TECHNOL (CN)
ZHAO FEIYU (CN)

International Classes:

G02B7/08; G02B13/14; (IPC1-7): G02B13/14; G02B7/04

Foreign References:

CN2483743Y	2002-03-27
US5812309A	1998-09-22

Attorney, Agent or Firm:

GUANGZHOU SINO PATENT AGENT CO., LTD. (No. 87 Cangbian Roa, Guangzhou Guangdong 0, CN)

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