Next-generation optics manufacturing technologies

Pollicove, Harvey M.

doi:10.1117/12.402758

Cited by 9 publications

(4 citation statements)

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“…However, shortcoming like low efficiency and low profile accuracy of machined surface are inevitable. In recent years, the ultra-grinding technology, which enhances the part's accuracy and machining efficiency, has rapidly developed [1,2].…”

Section: Introductionmentioning

confidence: 99%

The critical conditions of brittle–ductile transition and the factors influencing the surface quality of brittle materials in ultra-precision grinding

Chen

Zhao

Dong

et al. 2005

Journal of Materials Processing Technology

109

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Section: Introductionmentioning

confidence: 99%

The critical conditions of brittle–ductile transition and the factors influencing the surface quality of brittle materials in ultra-precision grinding

Chen

Zhao

Dong

et al. 2005

Journal of Materials Processing Technology

109

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“…So it has become popular to use aspherical lenses in various optical systems. On the one hand, advanced fabrication technologies tend to be able to produce arbitrary surface profiles indeed 1 .On the other hand, the relevant profile measurement of such surfaces and the quality assurance of the fabrication process respectively turn out to be one of the most important and difficult problems.…”

Section: Introductionmentioning

confidence: 99%

A novel method of measuring convex aspheric lens using Hologram Optical Elements

Wang

Xie

et al. 2006

SPIE Proceedings

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In order to simplify the complexity and improve the accuracy of convex aspheric lens testing, a novel method is proposed in this paper. In this method, convex aspheric lens is tested in transmitted light at the design wavelength by means of a Mach-Zehnder interferometer. Lens under test and its collimating lens are situated in one arm of Mach-Zehnder interferometer, Hologram Optical Elements (HOEs) acting as the compensator is placed in the proper position in another arm of interferometer. The principle of this setup is analyzed. The design and manufacture of HOEs and spatial filter used in this method are described in detail. In comparison with other methods, the advantages using this method are: (1) complex compensation lenses are not required any more, which simplifies the compensating structure and decreases the costs of measurement, (2) HOEs is easier to be fabricated. A convex-plane aspheric lens as an example is experimented.

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“…So this method is also known as the deterministic polishing technique [3] . Currently, except computer-controlled polishing (CCP), the developing CCOS technology includes many representative technologies, such as the dynamic stressed lap polishing technology, magnetorheological finishing technology [4] , and ion beam polishing technology [5] . The common characteristics of these technologies are a computer-controlled "small grinding tool" polishing on the surface of optical components.…”

mentioning

confidence: 99%

“…The integral formula (4) shows that the surface material removal amount h(x, y) is equal to the twodimensional (2D) convolution along with motion track between the polishing removal function r(x, y) and the dwell time d(x, y):…”

mentioning

confidence: 99%

Study of weighted space deconvolution algorithm in computer controlled optical surfacing formation

Zhang

2009

Chin. Opt. Lett.

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Theoretical and experimental research on the deconvolution algorithm of dwell time in the technology of computer controlled optical surfacing (CCOS) formation is made to get an ultra-smooth surface of space optical element. Based on the Preston equation, the convolution model of CCOS is deduced. Considering the morbidity problem of deconvolution algorithm and the actual situation of CCOS technology, the weighting spatial deconvolution algorithm is presented based on the non-periodic matrix model, which avoids solving morbidity resulting from the noise induced by measurement error. The discrete convolution equation is solved using conjugate gradient iterative method and the workload of iterative calculation in spatial domain is reduced effectively. Considering the edge effect of convolution algorithm, the method adopts a marginal factor to control the edge precision and attains a good effect. The simulated processing test shows that the convergence ratio of processed surface shape error reaches 80%. This algorithm is further verified through an experiment on a numerical control bonnet polishing machine, and an ultrasmooth glass surface with the root-mean-square (RMS) error of 0.0088 µm is achieved. The simulation and experimental results indicate that this algorithm is steady, convergent, and precise, and it can satisfy the solving requirement of actual dwell time.

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Next-generation optics manufacturing technologies

Cited by 9 publications

References 0 publications

The critical conditions of brittle–ductile transition and the factors influencing the surface quality of brittle materials in ultra-precision grinding

The critical conditions of brittle–ductile transition and the factors influencing the surface quality of brittle materials in ultra-precision grinding

A novel method of measuring convex aspheric lens using Hologram Optical Elements

Study of weighted space deconvolution algorithm in computer controlled optical surfacing formation

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