Fast fabrication of high-gradient optical aspheric surface by CNC machine

Weimin Zheng; Tianning Cao; Yanzhou Xu; Min Qian

doi:10.1117/12.318310

5 August 1998 Fast fabrication of high-gradient optical aspheric surface by CNC machine

Weimin Zheng, Tianning Cao, Yanzhou Xu, Min Qian

Proceedings Volume 3557, Current Developments in Optical Elements and Manufacturing; (1998) https://doi.org/10.1117/12.318310
Event: Photonics China '98, 1998, Beijing, China

Abstract

For fabricating a high gradient aspherics, we have designed a ZDCCOS complex, which consist of a CNC Polisher and a CQG- II digital wavefront interferometer. The Polisher has 5 degrees of freedom. The computer makes a small tool to move in three dimensions and drive the workpiece to sway, and turn around simultaneously to keep the pad in the normal directions of the workpiece surface. We designed a special dual-rotation tool and presented a new model to calculate the removal function of which. the model was verified by the experiments. The track programming algorithm was also designed to make the tools to move on spatial concentric circles, during the fabrication processes. The work piece was a (Phi) 300 mm, F5.9 focus lens, the aspheric degree of which was up to 46 micrometers . But only after 8 hours 43 minutes continuous fine grinding, and about 15 hours polishing, the surface error was decreased to 1(lambda) (Rms, (lambda) equals 0.6328 micrometers ).

Citation Download Citation

Weimin Zheng, Tianning Cao, Yanzhou Xu, and Min Qian "Fast fabrication of high-gradient optical aspheric surface by CNC machine", Proc. SPIE 3557, Current Developments in Optical Elements and Manufacturing, (5 August 1998); https://doi.org/10.1117/12.318310

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