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在光学仪器制造工业中广泛地使用了小偏转角玻璃楔镜。有时不仅要计算楔镜的偏转角,而且也需测量偏转角随入射角的改变而发生的变化。大家都知道,楔镜主平面上折射偏转角的准确计算公式为:δ=-α-θ+γγ=arc sin[nsin(θ+arc sin (sinα/n)](1)式中δ为偏转角:θ为楔角;γ为从楔镜出来的光线和楔镜第二表面法线间的夹角;α为第一表面上的入射角;n为折射率(见图1)。
The small deflection angle glass wedge mirror is widely used in the optical instrument manufacturing industry. Sometimes not only to calculate wedge deflection angle, but also to measure the deflection angle with the angle of incidence changes. As we all know, the accurate calculation formula of the deflection angle of the wedge mirror on the principal plane is: δ = -α-θ + γγ = arcsin [nsin (θ + arcsin (sinα / n)] where δ is the deflection Angle: θ is the wedge angle; γ is the angle between the light emerging from the wedge and the normal to the second surface of the wedge; α is the angle of incidence on the first surface; and n is the index of refraction (see Figure 1).