Analysis on Spectrum Response and Visual Range of Low Light Level Night Vision System Under Laser Illuminate

2010 ◽  
Vol 37 (1) ◽  
pp. 312-315
Author(s):  
刘伟 Liu Wei ◽  
付江涛 Fu Jiangtao ◽  
常本康 Chang Benkang
2019 ◽  
Vol 58 (18) ◽  
pp. 4947
Author(s):  
Tao Yuan ◽  
Zhenghao Han ◽  
Li Li ◽  
Weiqi Jin ◽  
Xia Wang ◽  
...  

2014 ◽  
Vol 568-570 ◽  
pp. 598-603
Author(s):  
Juan Li ◽  
Zhao Hui Liu ◽  
Chao Mei

Two camera lenses for 3D low light level color night vision system are designed in CODE V. The panchromatic sensitive camera lens works in a wide spectral band 400nm-1000nm, yellow green-sensitive camera lens works in a band of 400nm-600nm.The two camera lenses have same parameters, such as focal length 120mm, relative aperture 1/2, the field angle of 5.26 °. In the design of two camera lenses, we split and complex cooke triplet lens, the chromatic aberration is balanced by adding a binary diffractive surface. The results of design show that sensitive panchromatic camera lens and yellow-green-sensitive camera lens, in the all field of view, when the Nyquist frequency is 77.5 (lp / mm), all MTF is larger than 0.6; the axial chromatic aberration of sensitive panchromatic camera lens is 0.056mm. Two camera lenses have good imaging performance.


2010 ◽  
Vol 439-440 ◽  
pp. 1601-1605
Author(s):  
Da She Li ◽  
Shu E Liu ◽  
Zhen Hua

A way based on B-Spline wavelet transform is used to get the edge extraction of the night image. Compared with classical methods of edge detection, it provides higher precision and saves more details etc. Formulation of communication protocol is put forward. With the combination of laser technology and night vision technology, hardware and software program and image processing is designed to realize the auto-detection, monitoring and alarm. The visual range in full dark is 1.8km and more than 2.1km in 1/4 moonlight


2014 ◽  
Vol 568-570 ◽  
pp. 1778-1781
Author(s):  
Yu Chen ◽  
Chun Hong Hu ◽  
Yan Chun Luo ◽  
Ping Wang

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.


1980 ◽  
Vol 24 (1) ◽  
pp. 306-309
Author(s):  
Robert M. Waters ◽  
Larry W. Avery

Two experiments were run comparing the operational binoculars AN/PVS-5 Night Vision Goggles with two monocular low cost night vision goggles using newer light intensification techniques. No decrement in performance was noted in visual acuity or depth perception with the monocular low cost goggles; an improved capability was noted with the new goggles in low light level conditions.


2015 ◽  
Author(s):  
Elad Gross ◽  
Ran Ginat ◽  
Ofer Nesher

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