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Title: Inspection technology for F-theta lens: Practices and discussions
Authors: Li, H
To, S 
Kong, LB
Cheung, CF 
Lee, WB 
Keywords: F-theta
Form error
Optical freeform surface
Precision measurement
Surface roughness
Issue Date: 2008
Publisher: Scientific.Net
Source: Key engineering materials, 2008, v. 364-366 II, p. 1191-1196 How to cite?
Journal: Key engineering materials 
Abstract: This paper presents the inspection technology for a freeform surface component which is named F-theta lens. F-theta lens is widely used in laser scanners, printers, etc. Freeform characterization is one of the main approaches to verify the manufacturing precision of freeform surface. At present, there is still a lack of techniques for the characterization of freeform surfaces. This study aimed to explore some approaches to inspect freeform surfaces. Two types of measurement methods, namely contact and non-contact measurement methods, are employed to measure the F-theta lens surface. The pros and cons, the existing problems, different applications and areas for improvement of the two methods are discussed. A series of advanced measuring instruments are used in the measurement process. A brief description of measurement mechanisms of these instruments is also presented. As a whole, this paper contributes to the development of the precision measurement technology for optical freeform surfaces.
ISSN: 1013-9826
EISSN: 1662-9795
Appears in Collections:Conference Paper

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