Methods and apparatus of aligning surfaces

Details Methods and apparatus of aligning surfaces Methods and apparatus of aligning surfaces

2006-08-29

2009-11-17

Wu, Xiao M (Department: 2628)

Optics: measuring and testing

Shape or surface configuration

C345S421000, C345S619000, C703S001000, C703S002000

Reexamination Certificate

active

07619749

ABSTRACT:
Ultra-precision freeform surfaces are important to the development of complex and micro-optical-electro-mechanical devices used in many photonics and telecommunication products such as F-theta lenses for laser printers. These surfaces are complex and large scale surface topologies with shapes that generally possesses no rotational symmetry. Due to the geometrical complexities of these ultra-precision freeform surfaces, it is difficult to characterize the form accuracy and surface quality of freeform optical surfaces. The method of this invention is based on feature-point pre-fixture, and iterative precision alignment algorithm, which can provide sufficient capability of form characterization for ultra-precision freeform surfaces with form accuracy down to below sub-micrometer range

REFERENCES:
patent: 3871771 (1975-03-01), Scott
patent: 4264208 (1981-04-01), Haberl et al.
patent: 5438417 (1995-08-01), Busch et al.
patent: 5542032 (1996-07-01), Pritt
patent: 2003/0091226 (2003-05-01), Cahill et al.
patent: 2006/0114475 (2006-06-01), De Groot et al.
J. Huazhong Univ. Of Sci & Tech., vol. 25, No. 3, Mar. 1997, pp. 1-4, A New Algorithm for the Profile Error of a Parameter . . . .
Rentoul et al, Computer Integ. Manuf. Syst. 7(3) , 1994, pp. 173-178, Interpretation of errors from inspection results.
Qiu et al, Intl. Jour. of Machine Tools & Manf. 40, 2000, pp. 259-275, A practical evaluation approach towards form . . . .
Kase et al, Computer-Aided Design 31, 1999, pp. 495-505, Shape error evaluation method of free-form surfaces.
Mech. Sci. & Tech., vol. 20, No. 3, May 2001, 4 pgs., Modelling and Analysis of the Best Match in Free-form Surface.

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