Method of measuring black body thermodynamic temperature

A thermodynamic temperature, black body technology, applied in the field of radioactivity detection, can solve problems such as influence, and achieve the effect of strong radiation detection capability, low out-of-band light transmittance, and high sensitivity

Pending Publication Date: 2017-08-08
JINHUA VOCATIONAL TECH COLLEGE
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Problems solved by technology

Most of the radiation spectrometers based on AOTF in the prior art work in single-pass mode. The disadvantage is that, due to the existence of stronger diffraction side lobes, the out-of-band light will affect the work of the single-pass AOTF radiation spectrometer. A method of measuring the thermodynamic temperature of a black body can solve this problem

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  • Method of measuring black body thermodynamic temperature

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Embodiment Construction

[0017] Such as figure 1 It is a schematic diagram of the present invention. The device mainly includes aperture stop 2, apochromatic lens 3, optical dark box 4, polarizer 5, field stop 6, collimator lens 7, beam splitter 8, plane mirror I 9, lens I 10. Photodiode 11, transimpedance amplifier 12, narrowband output signal 13, Lyot diaphragm 14, acousto-optic tunable filter AOTF15, lens II 16, plane mirror II 17, microwave generator 18, CCD camera 19, the cancellation Chromatic aberration lens 3, polarizer 5, field diaphragm 6, collimator lens 7, beam splitter 8, plane mirror I 9, lens I 10, photodiode 11, transimpedance amplifier 12, Lyot diaphragm 14, acousto-optic The tuned filter AOTF15, the lens II 16, the plane mirror II 17, and the CCD camera 19 are located in the optical dark box 4 and form a radiation spectrometer. The entrance side of the radiation spectrometer has an object to be measured 1, which is mainly composed of the lens II 16 and The plane mirror II17 constitu...

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Abstract

The present invention relates to the radioactivity detection technology field. A method of measuring a black body thermodynamic temperature is characterized in that a radiation spectrometer is placed at a specific position, so that the distance between an aperture diaphragm and a to-be-measured object is about 900 millimeters; a CCD camera is used to observe an image of a detected area on the to-be-measured object; the radiation spectrometer is moved to detect the different areas on the to-be-measured object; the light entering the radiation spectrometer passes an acousto-optic tunable filter two times, then enters a photodiode and is transformed into a voltage signal, the voltage signal is amplified by a transimpedance amplifier, and then a narrow-band output signal is outputted, a voltage is outputted, the acousto-optic tunable filter filters the light in a light beam and within a narrow band frequency range, a microwave frequency outputted by a microwave generator is changed in a scanning manner to regulate and control the acousto-optic tunable filter to scan and filter the narrow band light, and a radiation spectrum of the to-be-measured object within a wavelength range of 650-1000 nanometers is obtained, so that the thermodynamic temperature of the to-be-measured object is analyzed.

Description

Technical field [0001] The present invention relates to the technical field of radioactivity detection, in particular to a radiation spectrometer that is based on a two-pass acousto-optic tunable filter AOTF configuration, uses a specific optical retroreflector, and can effectively suppress diffraction sidelobes for testing. A method of measuring the thermodynamic temperature of a black body. Background technique [0002] Tunable radiation spectrometers are used in many scientific research and industrial production processes. The main component of the tunable bandpass optical filter can be used to scan the power distribution of broadband uneven light sources, such as various interference filters with special thin films. , Tunable liquid crystal filter, optical monochromator, acousto-optic tunable filter AOTF, etc. based on the Lyot-Ohman concept. Among them, the acousto-optic tunable filter AOTF is a solid-state electronically-tuned band-pass filter that uses the acousto-optic p...

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Application Information

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IPC IPC(8): G01J5/52
CPCG01J5/53
Inventor 赵永建方晓华张向平
Owner JINHUA VOCATIONAL TECH COLLEGE
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