Objective lens design for image intensifier night vision sight

2001 ◽  
Author(s):  
Marinica Mirzu ◽  
Stefan Cantaragiu ◽  
Liviu Cosereanu ◽  
Daniel Ralea ◽  
Catalin A. Spulber
Keyword(s):  
Image Intensifier ◽  
Night Vision ◽  
Objective Lens ◽  
Lens Design

Lens Design of Low Light Level Night Vision Objective Optical System

2014 ◽  
Vol 568-570 ◽  
pp. 1778-1781
Author(s):  
Yu Chen ◽  
Chun Hong Hu ◽  
Yan Chun Luo ◽  
Ping Wang
Keyword(s):  
Optical System ◽  
Vision System ◽  
Optical Design ◽  
Light Level ◽  
Night Vision ◽  
Objective Lens ◽  
Lens Design ◽  
Low Light ◽  
Working Principle ◽  
Design Software

This paper discussed the working principle of the LLL night vision(low-light level night vision)device and researched into the LLL night vision objective opjective optical system.An LLL night vision objective optical system with good image quality is finally got,which comes after debugging with the optical design software ZEMAX according to the theoretical calculation of the objective lens parameters specific to night vision system.

Advanced image intensifier night vision system technologies: status and summary 2002

2003 ◽  
Author(s):  
Joseph P. Estrera ◽  
Timothy E. Ostromek ◽  
Antonio V. Bacarella ◽  
Wayne Isbell ◽  
Mike J. Iosue ◽  
...  
Keyword(s):  
Vision System ◽  
Image Intensifier ◽  
Night Vision

On the magnetic electron lens of minimum sphrical aberration

1978 ◽  
Vol 36 (1) ◽  
pp. 24-25
Author(s):  
S. Suzuki ◽  
A. Ishikawa
Keyword(s):  
Spherical Aberration ◽  
Resolving Power ◽  
Objective Lens ◽  
Lens Design ◽  
Magnetic Lens ◽  
Initial Voltage ◽  
Path Distance ◽  
Electron Lens ◽  
Image Position ◽  
Magnetic Electron

For the development of the electron microscope, in which high resolving power is demanded, it is important to construct an electron objective lens with minimum spherical aberration.In 1943, one of the authors published the paper on the approximate calculation of the electromagnetic field to give a minimum spherical aberration and also published the papers on small spherical aberration lens design based on this calculation.We will speak a comparison between the experimental results and the numerical calculations in practical cases.The following line shows the method to get more strictly minimum spherical aberration of magnetic lens.In a space charge free electron optical system, where a pure magnetic lens is concerned, differential equation for paraxial electron path is given byU being the initial voltage applied to the electron beam and γ the path distance from the optical axis Z.

Objective lens design of subminiature endoscope with image fiber bundles

2018 ◽  
Vol 39 (3) ◽  
pp. 114-118
Author(s):  
Zhu Xiaodong ◽  
Ye Bing ◽  
Li Kai ◽  
Ma Weidong
Keyword(s):  
Fiber Bundles ◽  
Objective Lens ◽  
Lens Design

Lens Design of Compatible Objective Lens for Blu-ray Disc and Digital Versatile Disk with Diffractive Optical Element and Phase Steps

2004 ◽  
Vol 43 (7B) ◽  
pp. 4742-4745 ◽  
Author(s):  
Yasuhiro Tanaka ◽  
Yoshiaki Komma ◽  
Yoshiyuki Shimizu ◽  
Tomoaki Shimazaki ◽  
Jun Murata ◽  
...  
Keyword(s):  
Optical Element ◽  
Diffractive Optical Element ◽  
Objective Lens ◽  
Lens Design ◽  
Digital Versatile Disk

A UHV-Compatible Photobmission Microscope for Applications in Surface Science

1990 ◽  
Vol 48 (1) ◽  
pp. 558-559
Author(s):  
W. Engel ◽  
H.H. Rotermund ◽  
M. Kordesch ◽  
S. Kubala ◽  
A.v. Oertzen ◽  
...  
Keyword(s):  
Surface Science ◽  
Focal Plane ◽  
Vacuum Chamber ◽  
Low Cost ◽  
Image Intensifier ◽  
Objective Lens ◽  
Aperture Diameter ◽  
Channel Plate ◽  
Differential Pumping ◽  
Ground Potential

The intention was to develop a low-cost reliable photoemission microscope (Fig.l) which gives only modest lateral resolution but allows full advantage to be taken of its ability to reveal small variations of the sample‘s work function with high contrast. Another important point was its applicability in the field of heterogeneous catalysis, i.e. the possibility of observing catalyst surfaces during catalitic reactions.The microscope can be attached to any vacuum chamber which has been provided with a port for a standard LEED system. It is mounted on an 8-inch OD CF flange, and the flange-to-sample distance has the standard length of 10 inches. The sample is at ground potential whereas the microscope column is at +20 kV. The microscope is connected to an auxiliary pump, and a fixed aperture (diameter 300 μn) in the back focal plane of the objective lens permits differential pumping. Pressures in the sample area even approaching 10−3 Torr do not effect the operation of the microscope and its channel-plate image intensifier.

Objective Lens Design of Electronic Endoscope with Front and Back Fields

2017 ◽  
Vol 54 (2) ◽  
pp. 022201
Author(s):  
王立明 Wang Liming ◽  
丁红昌 Ding Hongchang ◽  
向阳 Xiang Yang
Keyword(s):  
Objective Lens ◽  
Lens Design
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