Title:
OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2016/033730
Kind Code:
A1
Abstract:
An optical lens, comprising a first lens (L1), a second lens (L2), a third lens (L3) and a fourth lens (L4) successively arranged on a common optical axis along the transmission direction of incident light rays. The first lens (L1) and the fourth lens (L4) are meniscus-type negative lenses, the second lens (L2) is a meniscus-type positive lens, and the third lens (L3) is a plano-convex-type positive lens. The optical lens is applied in an optical system of a laser processing device, and when a utilised processing wavelength is different from a monitoring wavelength, imaging colour difference in a monitoring system may be eliminated. In particular, when a wavelength of the far infrared region is utilised as a wavelength for laser processing, and a red light wavelength is utilised as a monitoring wavelength, a better imaging effect is provided in the monitoring system, and laser processing quality is ensured.
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Inventors:
LI JIAYING (CN)
ZHOU CHAOMING (CN)
SUN BO (CN)
HUANG HAI (CN)
GAO YUNFENG (CN)
ZHOU CHAOMING (CN)
SUN BO (CN)
HUANG HAI (CN)
GAO YUNFENG (CN)
Application Number:
PCT/CN2014/085712
Publication Date:
March 10, 2016
Filing Date:
September 02, 2014
Export Citation:
Assignee:
HANS LASER TECHNOLOGY CO LTD (CN)
International Classes:
G02B9/58; G02B9/38
Foreign References:
| CN103984078A | 2014-08-13 | |||
| CN101236291A | 2008-08-06 | |||
| CN2725917Y | 2005-09-14 | |||
| CN101236303A | 2008-08-06 | |||
| CN2725922Y | 2005-09-14 | |||
| US20040257677A1 | 2004-12-23 | |||
| US20130128369A1 | 2013-05-23 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
广州华进联合专利商标代理有限公司 (CN)
广州华进联合专利商标代理有限公司 (CN)
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