Diamond Turning Wavefront Correctors: Opening New Optical Design Flexibilities

1987 ◽  
Author(s):  
S R. Patterson ◽  
T T. Saito ◽  
A B. Meinel ◽  
M P. Meinel ◽  
J E. Stacy
Keyword(s):  
Optical Design ◽  
Diamond Turning ◽  
Wavefront Correctors

scholarly journals Study on Design and Diamond Turning of Optical Freeform Surface for Progressive Addition Lenses

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Yi Wei ◽  
Peng Zhai ◽  
Xiaoyi Chen ◽  
Lei He
Keyword(s):  
Tool Path ◽  
Single Point ◽  
Optical Design ◽  
Tool Path Generation ◽  
Diamond Turning ◽  
Freeform Surface ◽  
Path Generation ◽  
Nose Radius ◽  
Angle Method ◽  
Progressive Addition Lens

Optical freeform surface components have attracted much attention due to their high degree of design freedom and small size. However, the design and processing difficulty of such components limit its wide application in optics industry. In recent years, diamond turning has been considered an efficient method for processing optical freeform surfaces, but the research on tool path generation of this processing method is not systematic. Progressive addition lens (PAL) is a typical optical freeform surface and is widely used to correct people’s vision problems. Firstly, this paper introduces a method of designing PAL. Then, an optimized tool path generation method for diamond turning of the optical freeform surface is proposed, the equal angle method is used to select the discrete points, and a tool nose radius compensation method suitable for both slow slide servo (SSS) and fast tool servo (FTS) is adopted. Finally, the turning experiment is carried out with a single point diamond lathe, and a PAL surface with a roughness of 0.087 μm was obtained. The power and astigmatism distributions were measured using a Rotlex freeform verifier to verify the rationality of the optical design.

Use of the Magnetostatic Analogue In Electromagnetic Lens Engineering

1970 ◽  
Vol 28 ◽  
pp. 360-361
Author(s):  
John W. Coleman
Keyword(s):  
Boundary Conditions ◽  
High Performance ◽  
Force Fields ◽  
Optical Design ◽  
Direct Conversion ◽  
Design Engineering ◽  
Design Data ◽  
Scalar Potentials ◽  
Geometric Elements ◽  
At Will

In the design engineering of high performance electromagnetic lenses, the direct conversion of electron optical design data into drawings for reliable hardware is oftentimes difficult, especially in terms of how to mount parts to each other, how to tolerance dimensions, and how to specify finishes. An answer to this is in the use of magnetostatic analytics, corresponding to boundary conditions for the optical design. With such models, the magnetostatic force on a test pole along the axis may be examined, and in this way one may obtain priority listings for holding dimensions, relieving stresses, etc..The development of magnetostatic models most easily proceeds from the derivation of scalar potentials of separate geometric elements. These potentials can then be conbined at will because of the superposition characteristic of conservative force fields.

Analysis of Surface Roughness and Waviness During Diamond Turning of Polycarbonate

2012 ◽  
Vol 2 (6) ◽  
pp. 268-270 ◽  
Author(s):  
Harinderpal Singh Harinderpal Singh ◽  
◽  
Rahul O vaishya ◽  
Karanvir Sing ◽  
Vinod Mishra ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Diamond Turning

Optical design to boost the performance of perovskite based tandem solar cells

2018 ◽  
Author(s):  
Miguel Anaya ◽  
Gabriel Lozano ◽  
Mauricio Calvo ◽  
Hernán Míguez
Keyword(s):  
Solar Cells ◽  
Optical Design ◽  
Tandem Solar Cells

Lossless Photon management – Optical design for manufacture at different length scales - NOLOSS - H2020

Impact ◽  
2018 ◽  
Vol 2018 (1) ◽  
pp. 48-50
Author(s):  
Toralf Scharf ◽  
Paul Urbach ◽  
Carsten Rockstuhl ◽  
Frank Setzpfand
Keyword(s):  
Optical Design ◽  
Length Scales ◽  
Design For Manufacture ◽  
Photon Management
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