Research on Signal-to-noise Ratio of Low-light Level Image Intensifier Based on Night Sky Light Spectrum Matching

Table 1. Related parameters of Gen2 and Gen 3 under different night radiation conditions
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Table 1. Related parameters of Gen2 and Gen 3 under different night radiation conditions
Radiation $K_{x}$ /（lm·W^-1） $α (S, E_{x})$ $k$
Gen2 Gen3 Gen2 Gen3
Full moon 60.268 0.673 0.657 1.510 1.552
Stars+¼moon 55.823 0.649 0.635 1.572 1.619
Stars 12.134 0.411 0.422 4.580 4.950
Stars with clouds 12.134 0.411 0.422 4.580 4.950

Table 2. Typical parameters of Gen2 and Gen3
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Table 2. Typical parameters of Gen2 and Gen3
S_A/（ $μ A \cdot l m^{- 1}$ ） $F_{Φ}$ $Φ$ $δ$
Experimental Calculation
Gen2 702 1.15 25.41 25.83 1.6%
Gen3 1 856 2.48 27.88 28.13 0.9%

Table 3. Parameters required for the signal-to-noise ratio calculation
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Table 3. Parameters required for the signal-to-noise ratio calculation
$a$ / $m m$ S_A/（ $μ A \cdot l m^{- 1}$ ） $F_{Φ}$ $E_{B I}$ / $μ l x$ Objective lens system parameters
Gen2 Gen3 Gen2 Gen3 $f_{0}^{'} / m m$ D/ $m m$ τ₀
0.2 702 1 856 1.15 2.48 0.25 20.7 16 0.85

Table 4. The output signal-to-noise ratio of Gen2 and Gen3 under the stars with clouds
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Table 4. The output signal-to-noise ratio of Gen2 and Gen3 under the stars with clouds
A light Stars with clouds $δ$
7.44×10^-6lx 7.44×10^-6lx
Gen2 6.56 14.05 114%
Gen3 7.27 16.18 123%
Δ 0.71 2.13

Table 5. The output signal-to-noise ratio of Gen2 and Gen3 under the stars
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Table 5. The output signal-to-noise ratio of Gen2 and Gen3 under the stars
A light Stars $δ$
3.72×10^-5lx 3.72×10^-5lx
Gen2 14.88 31.84 114%
Gen3 16.47 36.65 123%
Δ 1.59 4.81

Table 6. The output signal-to-noise ratio of Gen2 and Gen3 under the stars with ¼moon
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Table 6. The output signal-to-noise ratio of Gen2 and Gen3 under the stars with ¼moon
A light Stars+¼moon $δ$
3.72×10^-4lx 3.72×10^-4lx
Gen2 47.20 59.17 25%
Gen3 52.25 66.49 27%
Δ 5.05 7.32

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Qin ZHANG, Xiaofeng BAI, Hongchang CHENG, Gangcheng JIAO, Zhoukui LI, Kun HAN, Qi LI. Research on Signal-to-noise Ratio of Low-light Level Image Intensifier Based on Night Sky Light Spectrum Matching[J]. Acta Photonica Sinica, 2022, 51(3): 0304005

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Paper Information

Category:

Received: Sep. 26, 2021

Accepted: Nov. 17, 2021

Published Online: Apr. 8, 2022

The Author Email: ZHANG Qin (741379712@qq.com)

DOI:10.3788/gzxb20225103.0304005

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Related parameters of Gen2 and Gen 3 under different night radiation conditions

Table 1. Related parameters of Gen2 and Gen 3 under different night radiation conditions

Table 2. Typical parameters of Gen2 and Gen3

Table 2. Typical parameters of Gen2 and Gen3

Table 3. Parameters required for the signal-to-noise ratio calculation

Table 3. Parameters required for the signal-to-noise ratio calculation

Table 4. The output signal-to-noise ratio of Gen2 and Gen3 under the stars with clouds

Table 4. The output signal-to-noise ratio of Gen2 and Gen3 under the stars with clouds

Table 5. The output signal-to-noise ratio of Gen2 and Gen3 under the stars

Table 5. The output signal-to-noise ratio of Gen2 and Gen3 under the stars

Table 6. The output signal-to-noise ratio of Gen2 and Gen3 under the stars with ¼moon

Table 6. The output signal-to-noise ratio of Gen2 and Gen3 under the stars with ¼moon

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