光学伪装网的颜色要求
Color requirements for optical camouflage nets
10008092
ten million eight thousand and ninety-two
一，60°镜面光泽不大于5光泽单位。
1、 60 ° mirror gloss shall not exceed 5 gloss units.
光泽是物体的外观光学特性。表面平滑材料收到可见光的照射都会产生有方向性的向另一方向的反射现象，这称为镜面反射，其结果使材料表面带有光泽即为镜面光泽，其反射能力的大小称为镜面光泽度。
Gloss is the optical characteristic of an object's appearance. Smooth surface materials that receive visible light will produce directional reflection in the other direction, which is called specular reflection. The result is that the material surface has a luster, which is called specular luster. The size of its reflection ability is called specular glossiness.
涂层镜面光泽度的大小是通过测量试样表面的反射光通量与入射光通量的比值来确定。通常采用60°入射角测量。的无光泽表面设置为0。可使用光泽度计来测量产品的光泽度。
The size of the specular glossiness of the coating is determined by measuring the ratio of the reflected luminous flux to the incident luminous flux on the sample surface. Usually measured at a 60 ° incidence angle. Set the high-quality matte surface to 0. A glossmeter can be used to measure the glossiness of the product.
二，色差不大于3L*a*b*单位。
2、 The color difference shall not exceed 3L * a * b * units.
色彩的表示方式，也就是色彩模式有多种，有RGB模式、XYZ模式、L*a*b*模式等。管理这些模式的是国际照明委员会。这些模式之间都是可以相互换算的。于建立模式的原理和换算关系没有必要细究，那是教授的事情。
There are various ways to represent colors, including RGB mode, XYZ mode, L * a * b * mode, etc. The International Lighting Commission manages these modes. These modes can be converted to each other. As for the principles and conversion relationships of establishing patterns, there is no need to delve into them, it is the responsibility of experts and professors.
RGB色彩模式是工业界的一种颜色标准，是通过对红（R）、绿（G）、蓝（B）三个颜色通道的变化以及它们相互之间的叠加来得到各式各样的颜色的，RGB即是代表红、绿、蓝三个通道的颜色，这个标准几乎包括了人类视力所能感知的所有颜色，是目前运用广的颜色系统之一。而与我们电脑相关的地方，就是目前的显示器大都是采用了RGB颜色标准，RGB是从颜色发光的原理来设计定的，通俗点说它的颜色混合方式就好象有红、绿、蓝三盏灯，当它们的光相互叠合的时候，色彩相混，而亮度却等于两者亮度之总和，越混合亮度越高。
The RGB color mode is a color standard in the industry, which obtains a variety of colors through changes in the red (R), green (G), and blue (B) color channels and their superposition. RGB represents the colors of the red, green, and blue channels. This standard includes almost all colors that human vision can perceive, and is currently one of the widely used color systems. And what is related to our computer is that most of the current monitors use the RGB color standard. RGB is designed based on the principle of color luminescence. In simple terms, its color mixing method is like having three lights: red, green, and blue. When their lights overlap, the colors mix, and the brightness is equal to the total brightness of the two. The more mixed, the higher the brightness.
XYZ模式只是在RGB色彩模式的基础上，用数学方法表示的一种模式。X、Y、Z称为三刺激值。其中X与Z只代表色度，无亮度。光亮度只与三刺激值Y成正比。这一点正与可见光亮度对比公式有关。
The XYZ mode is only a mathematical representation based on the RGB color mode. X. Y and Z are called tristimulus values. Among them, X and Z only represent chromaticity and have no brightness. The brightness is only proportional to the tristimulus value Y. This is directly related to the formula for comparing the brightness of visible light.
L*a*b*模式是XYZ色彩模式的改进型。它的L*（明亮度）、a*（绿色到红色）和b*（蓝色到黄色）代表许多的值。与XYZ比较，L*a*b*色彩模式更适合于人眼感觉的色彩。利用这个模式，可以单独修正色彩的亮度L*、灰阶和饱和度a*b*。
The L * a * b * mode is an improved version of the XYZ color mode. Its L * (brightness), a * (green to red), and b * (blue to yellow) represent many values. Compared with XYZ, the L * a * b * color mode is more suitable for colors perceived by the human eye. By using this mode, the brightness L *, grayscale, and saturation a * b * of colors can be individually corrected.
在伪装网的研发和生产中，一般会应用到L*a*b*模式和XYZ模式，在模式中的数值可以通过样品检测获得。如果对照色使用了G1082-91《伪装网用颜色》的标准色，可以通过标准查到相应数值。
In the development and production of camouflage nets, the L * a * b * mode and XYZ mode are generally applied, and the values in the mode can be obtained through sample testing. If the reference color uses the standard color of G1082-91 "Colors for Camouflage Nets", the corresponding values can be found through the standard.
色差⊿E*ab计算：
Calculation of color difference Δ E * ab:
⊿E*ab=﹝﹙⊿L*﹚2+﹙⊿a*﹚2+﹙⊿b*﹚2﹞1/2
Delta E * ab=(Delta L *) 2+(Delta a *) 2+(Delta b *) 2) 1/2
式中：⊿L*、⊿a*、⊿b*--伪装网样品色与其对应标准坐标L*、a*、b*之差。
In the formula: Δ L *, Δ a *, Δ b * - the difference between the camouflage mesh color and its corresponding standard coordinates L *, a *, b *.
⊿E*ab小于等于3，即符合标准要求。
If Δ E * ab is less than or equal to 3, it meets the standard requirements.
三，可见光亮度对比不大于0.1。
3、 The contrast of visible light brightness shall not exceed 0.1.
可见光亮度对比KV计算：KV=｜Ys-Yr｜／Yr
Calculation of visible light brightness contrast KV: KV=| Ys Yr |/Yr
式中：Ys--样品色在XYZ色度系统中的刺激值Y；Yr--标准色在XYZ色度系统中的刺激值Y。
In the formula: Ys - stimulus value Y of the sample color in the XYZ chromaticity system; Yr - The stimulus value Y of the standard color in the XYZ chromaticity system.
KV小于等于0.1，即符合标准要求。
If KV is less than or equal to 0.1, it meets the standard requirements.
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