Development of key technologies in the fabrication of large aperture off-axis wedge focusing lens

Xian-hua Chen; Hua-dong Yu; Bo Zhong; Rui-qing Xie; Lian Zhou

doi:10.1117/12.2267413

8 March 2017 Development of key technologies in the fabrication of large aperture off-axis wedge focusing lens

Xian-hua Chen, Hua-dong Yu, Bo Zhong, Rui-qing Xie, Lian Zhou

Proceedings Volume 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016; 102551C (2017) https://doi.org/10.1117/12.2267413
Event: Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 2016, Jinhua, Suzhou, Chengdu, Xi'an, Wuxi, China

Abstract

In order to achieve the high precision fabrication of the large-aperture off-axis Wedged Focus Lens (WFL) for high power laser device, the involved fabrication technologies including the ultra precision grinding, the high efficiency polishing and the deterministic polishing, have been explored in this paper. Firstly, based on the configuration characteristic of WFL, the parallel grinding theory and the calculation method of CNC program were introduced. Secondly, the main factors affecting the removal efficiency were investigated and analyzed by orthogonal approach experiment in the high efficiency polishing process, which can be used for the quality control. Then, the methods for maintaining the stability of removal function and restraining the surface ripple were investigated during deterministic polishing process. Finally, a 430mm×430mm off-axis Wedged Focus Lens was manufactured using the above technologies, and the results indicated that, after polishing, the P-V, RMS, GRMS, PSD RMS1, PSD RMS2 and Rq are 0.097λ, 0.012λ (λ=632.8 nm), 5.851 nm/cm, 2.325 nm, 0.541 nm and 0.21 nm, respectively, which meet the requirement of high power laser device. Consequently, the effectiveness of the proposed key technologies is proved.

Citation Download Citation

Xian-hua Chen, Hua-dong Yu, Bo Zhong, Rui-qing Xie, and Lian Zhou "Development of key technologies in the fabrication of large aperture off-axis wedge focusing lens", Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 102551C (8 March 2017); https://doi.org/10.1117/12.2267413

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polishing

Aspheric lenses

Surface finishing

Lens grinding

High power lasers

Manufacturing

Photovoltaics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years