A laser-based measurement system for transparent surface forming

Mingyan Li; Xinzhu Sang; Yang Sun; Binbin Yan; Chongxiu Yu

doi:10.1117/12.999502

30 November 2012 A laser-based measurement system for transparent surface forming

Mingyan Li, Xinzhu Sang, Yang Sun, Binbin Yan, Chongxiu Yu

Proceedings Volume 8558, Optoelectronic Imaging and Multimedia Technology II; 855803 (2012) https://doi.org/10.1117/12.999502
Event: Photonics Asia, 2012, Beijing, China

Abstract

Because the forming process of transparent surface is entirely artificial, it is difficult to meet the requirements of real-time and high precision. In this paper, the laser monitoring system solution can solve this problem. This system consists of three parts, a laser, a CCD camera, and a computer. The laser beam is injected to the transparent surface, and received by the CCD camera. The image is processed by the computer in real-time. By the changes of laser spot during the forming process, a solution is proposed to calculate the difference between the two spot images, which determines the change of height. The experimental results show that when the transparent surface grows 1mm, the effective axial length changes 30 pixels. After multiple measurements, we obtain the relationship curve between the height of the transparent surface and effective axial length. According to the curve, we calculate the measurement error is 2.725%. The processing speed of computer is also measured. It can process 10 pictures per second. The algorithm reflects superiority in both accuracy and processing speed.

Citation Download Citation

Mingyan Li, Xinzhu Sang, Yang Sun, Binbin Yan, and Chongxiu Yu "A laser-based measurement system for transparent surface forming", Proc. SPIE 8558, Optoelectronic Imaging and Multimedia Technology II, 855803 (30 November 2012); https://doi.org/10.1117/12.999502

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