Experimental study on precision molding of small dual aspherical chalcogenide glass lens

2018 ◽  
Vol 47 (4) ◽  
pp. 418006
Author(s):  
唐 昆 Tang Kun ◽  
孔明慧 Kong Minghui ◽  
朱勇建 Zhu Yongjian ◽  
陈逢军 Chen Fengjun ◽  
毛 聪 Mao Cong ◽  
...  
Keyword(s):  
Experimental Study ◽  
Chalcogenide Glass ◽  
Glass Lens

Simulation and experiment of non-isothermal hot pressing of small-diameter aspherical chalcogenide glass lens

2019 ◽  
Vol 48 (8) ◽  
pp. 814006
Author(s):  
唐 昆 Tang Kun ◽  
李典雨 Li Dianyu ◽  
舒 勇 Shu Yong ◽  
朱勇建 Zhu Yongjian ◽  
王 宇 Wang Yu ◽  
...  
Keyword(s):  
Chalcogenide Glass ◽  
Hot Pressing ◽  
Small Diameter ◽  
Simulation And Experiment ◽  
Glass Lens

Fabrication of molded chalcogenide-glass lens for thermal imaging applications

2012 ◽  
Vol 51 (23) ◽  
pp. 5649 ◽  
Author(s):  
Du Hwan Cha ◽  
Hye-Jeong Kim ◽  
Yeon Hwang ◽  
Jae Cheol Jeong ◽  
Jeong-Ho Kim
Keyword(s):  
Chalcogenide Glass ◽  
Thermal Imaging ◽  
Glass Lens

One-Point Nano-Grinding for Micro-Aspherical Glass Lens Mould

2010 ◽  
Vol 97-101 ◽  
pp. 4217-4220 ◽  
Author(s):  
Shao Hui Yin ◽  
Yu Wang ◽  
Yu Feng Fan ◽  
Yong Jian Zhu ◽  
Feng Jun Chen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Error Compensation ◽  
Grinding Process ◽  
Form Error ◽  
Precision Grinding ◽  
Aspherical Lens ◽  
Ultra Precision ◽  
Compensation Technique ◽  
Glass Lens ◽  
Micro Lens

This paper reported an experimental study on ultra-precision grinding for micro aspherical lens mould. One-point grinding mode and inclined axis grinding mode are employed and investigated in grinding process. Grinding test of a micro-lens mould using form error compensation technique is conducted. The experimental results show that ground micro aspheric mould surfaces with form (PV) around 0.122 µm and a roughness (Ra) less than 2 nm is achieved successfully.

Fabrication of chalcogenide glass lens module for thermal security camera

2014 ◽  
Author(s):  
Du Hwan Cha ◽  
Yeon Hwang ◽  
Jeong-Ho Kim ◽  
Dong-Sik Kim ◽  
Hye-Jeong Kim
Keyword(s):  
Chalcogenide Glass ◽  
Glass Lens

Molded infrared chalcogenide glass lens

2003 ◽  
Author(s):  
Maohe Li ◽  
Philip Lam ◽  
Shibin Jiang
Keyword(s):  
Chalcogenide Glass ◽  
Glass Lens

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

An Experimental Study of Some Properties of Stuttered Words

1962 ◽  
Vol 5 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bruce Quarrington ◽  
Jerome Conway ◽  
Nathan Siegel
Keyword(s):  
Experimental Study
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