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光学玻璃中性密度滤光片

中性密度滤光片让摄影师非常容易地控制图像中的曝光。该滤光片阻止光线到达相机传感器,因此我们可以让相机在更长的时间内保持更大的通光孔径。
  • 产品产地:

    中国
  • 航运港口:

    中国福州
  • 交付周期:

    四周
  • 付款:

    银行电汇, 西联付款
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  • 描述

Uni Optics的中性密度滤光片是一种可以均匀地降低或改变所有波长或颜色强度,但不会改变颜色色调的滤光片。



1. 什么是中性密度滤光片?


中性密度滤光片让摄影师非常容易地控制图像中的曝光。该滤光片阻止光线到达相机传感器,因此我们可以让相机在更长的时间内保持更大的通光孔径。


2. 中性密度滤光片的用途是什么?


标准摄影中性密度滤光片的目的是减少光量进入镜头。这样做允许摄影师选择光圈,曝光时间和传感器灵敏度的组合,否则会产生过度曝光的图像。



常用规格


尺寸公差:±0.5mm

表面质量:80-50或更高

表面面型:4-6λ或更好

涂层:可选




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Syngony Cubic
Crystal Form Poly or Single Crystal
Lattice Constant 5.66
Cleavability <111>, non-perfect
Molecular Weight 72.6
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Density, at 20 °C 5.33
Hardness, Mohs 6.3
Dielectric Constant for 9.37 × 109 Hz at 300 K 16.6
Melting 937
Thermal Conductivity, W/m·K at at 293 K 59
Thermal Expansion, 1/K at 298 K 6.1 × 10-6
Specific Heat Capacity, J/(kgK) at 273-373 K 0.074
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Knoop Hardness, kg/mm2 800
Youngs Modulus, Gpa 102.66
Shear Modulus, GPa 67.04
Bulk Modulus, GPa 77.86
Debye Temperature, K 370
Poissons Ratio 0.278
Elastic Coefficient C11=129, C12=48.3, C44=67.1
Apparent Elastic Limit 89.6 MPa (13000psi)
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Solubility in acids Soluble
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