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Infrared glass refractive index photoelectric detection method based on measurement apex angle and incidence angle

An infrared glass and photoelectric detection technology, applied in the optical field, can solve the problems of high price, complicated calculation and operation, and low efficiency of double-layer high-precision one-dimensional turntables, and achieve the effect of low cost, simple operation, and high efficiency

Active Publication Date: 2015-02-18
长春市艾必利务科技有限公司
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Problems solved by technology

However, the price of the double-layer high-precision one-dimensional turntable is high, and the method for calculating the refractive index of the double-layer high-precision one-dimensional turntable is relatively complicated in calculation and operation, with high cost and low efficiency

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  • Infrared glass refractive index photoelectric detection method based on measurement apex angle and incidence angle
  • Infrared glass refractive index photoelectric detection method based on measurement apex angle and incidence angle
  • Infrared glass refractive index photoelectric detection method based on measurement apex angle and incidence angle

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Embodiment Construction

[0022] As shown in the figure, the infrared glass refractive index photoelectric detection method based on measuring the vertex angle and the incident angle is characterized in that it includes the following steps,

[0023] Step 1. Use the light source xenon lamp 1, the monochromator 2, and the off-axis parabolic reflector 4 to form parallel light rays simulating an infinite target; use the chopper 5 as a signal modulation and spatial filter, and use the chopper 5 to convert the DC optical signal It is modulated into an alternating signal, and the detection of weak signals is realized by using chopper 5 lock-in amplification technology;

[0024] Step 2. In step 1, a spectroscopic prism 3 is set between the monochromator 2 and the off-axis parabolic reflector 4; the spot position of the spectroscopic prism 3 is monitored by the detector IV11; the detector I8, II9 and III10 are used to monitor The spot position of the measured prism 6;

[0025] Step 3: Measure the vertex angle ...

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Abstract

The invention relates to an infrared glass refractive index photoelectric detection method based on a measurement apex angle and an incidence angle, belonging to the technical field of optics. The detection method comprises the following steps: forming a parallel ray for simulating infinite target by virtue of a light source xenon lamp, a monochromator and an off-axis parabolic mirror; monitoring spot position of a beam splitter prism through a detector IV, and monitoring spot position of a detected prism through a detector I, a detector II and a detector III; calculating a prism apex angle depending on formula alpha=60 degrees+ / -|theta2-theta1|; calculating a minimum deviation angle of the prism depending on formula (as shown in Specification); and calculating a refractive index of the detected prism depending on formula (as shown in Specification). Compared with the prior art, the detection method has the characteristics of simplicity and convenience in calculation, simplicity in operation, time-saving and labor-saving properties, low cost and high efficiency.

Description

technical field [0001] The invention belongs to the field of optical technology, in particular to a photoelectric detection method for infrared glass refractive index. Background technique [0002] Among the performance parameters of many infrared optical materials, the refractive index parameter is an important parameter that designers of infrared optical systems must accurately understand. Only by knowing this parameter data can optical designers complete high-quality design work. In the domestic measurement system of infrared glass refractive index, the method of angle measurement is adopted. Among them, the minimum deflection angle method has higher accuracy in measuring the refractive index of glass, and it is also the method chosen by most researchers. The system uses a double-layer high-precision one-dimensional turntable to measure the vertex angle and minimum deflection angle of the triangular prism, so as to obtain refractive index. However, the price of the doub...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41
Inventor 王劲松王莹安志勇崔士宝李延风
Owner 长春市艾必利务科技有限公司
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