英语翻译光线和辐射光是电磁波辐射到人的眼睛,经视觉神经转换为光线,即能被肉眼看见的那部分光谱.这类可见光射线的波长在36

英语翻译
光线和辐射
光是电磁波辐射到人的眼睛,经视觉神经转换为光线,即能被肉眼看见的那部分光谱.这类可见光射线的波长在360到830nm范围之间,仅仅是电辐射光谱中非常小的一部分.
光通量
单位：流明（lm）
发光体发出可见的光量之总和,即光源光通量
光强（l)
单位：坎德拉（cd）
一般来讲,光线都是向不同方向发射的,并且强度各异.
可见发光体在特定方向单位立体角内所发射的光通量叫光强.
照度（E）
单位：勒克司（LX）
发光体照射在被照物体单位面积上的光通量,被称为照度
亮度：（L）
单位：坎/平方米（cd/m）
发光体特定方向单位立体角内单位面积所发射的光通量称为亮度.
光强分布曲线图
常用光学公式
光强 ：常用符号L 代表 .特定角度内的光通量/特定角度
照度：常用符号E代表.被表面接受的光通量（lm）/被照物表面面积
辉度：常用符号L代表.光强被观察表面的面积
光效：常用符号H代表.发射通量/耗电量.

Light and radiation
Just electromagnetic radiation to the people's eyes, through the optic nerve into the light, that is, the naked eye can be seen that part of the spectrum. Such visible light rays in the 360 to 830nm wavelength range, which is only a very small electric radiation as part of the spectrum.
Flux
Unit: lumen (lm)
Issued luminous body visible in the sum of the amount of light, that is, light flux
Light intensity (l)
Unit: candela (cd)
In general, the light is emitted in different directions, and intensity vary.
Visible luminous body in a specific direction within the unit solid angle is called luminous flux emitted light intensity.
Illuminance (E)
Unit: lux (LX)
Luminous body irradiation in the illuminated objects on a luminous flux per unit area, known as the illumination
Brightness: (L)
Unit: Hom / square meter (cd / m)
Luminous body specific direction within the unit solid angle of the luminous flux emitted per unit area is called brightness.
Light intensity distribution curve
Common optical formula
Light intensity: Common symbols L representative. Luminous flux within a certain angle / specific angle
Illumination: Common symbols E representative. Has been accepted by the surface flux (lm) / surface area of the illuminated
Luminance: L on behalf of commonly used symbols. Light intensity has been observed surface area of
Luminous Efficiency: common symbols H representative. Emission flux / power consumption.