Infrared radiation illumination measuring instrument and method using measuring instrument to measuring infrared radiation illumination

An infrared radiation and illuminance measurement technology, applied in the optical field, can solve the problems of large size, inconvenient to carry, large error, etc., to achieve the effect of ensuring accuracy and stability, solving the problem of portability, and reasonable calibration results

Inactive Publication Date: 2012-10-03
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of inaccurate and reasonable calibration, large error, low detection accuracy of weak signals, large volume and inconvenient portabil

Method used

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  • Infrared radiation illumination measuring instrument and method using measuring instrument to measuring infrared radiation illumination
  • Infrared radiation illumination measuring instrument and method using measuring instrument to measuring infrared radiation illumination
  • Infrared radiation illumination measuring instrument and method using measuring instrument to measuring infrared radiation illumination

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Experimental program
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Example Embodiment

[0027] Specific implementation mode 1: the following combination figure 1 To explain this embodiment, the infrared radiation illuminance measuring instrument of this embodiment includes a main objective lens 1, a modulation disc 2, a first relay lens 3, a filter 4, an attenuator group 5, a second relay lens 6, Photodetector 7, preamplifier 8, lock-in amplifier 9, AD conversion module 10, computer 11 and modulation disc motor speed control and drive circuit 12,

[0028] The parallel beam enters the main objective lens 1, the main objective lens 1 outputs the convergent beam and enters the modulation disc 2, the modulation disc 2 outputs the modulated beam and enters the first relay lens 3, and the relay lens 3 outputs the parallel beam and enters the filter 4 , The transmitted light beam output by the filter 4 is incident on the second relay lens 6 after the parallel attenuated light beam after the attenuation sheet group 5, and the converged light beam output by the second relay l...

Example Embodiment

[0035] Specific implementation manner 2: the following combination Figure 1 to Figure 3 To explain this embodiment, the method for measuring infrared radiation illuminance using the infrared radiation illuminance measuring instrument described in the first embodiment includes the following steps:

[0036] Step 1. Use a standard infrared collimated light source to calibrate the infrared radiation illuminance measuring instrument 15:

[0037] The infrared collimated light source is realized by the standard black body 13. The output beam of the standard black body 13 passes through the collimator 14 and the output parallel beam is incident on the infrared radiation illuminance measuring instrument 15, and the standard black body 13, the collimator 14 and the infrared radiation illuminance measuring instrument are adjusted The positional relationship between 15 is such that the parallel beam incident to the infrared radiation illuminance measuring instrument 15 completely covers the p...

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Abstract

The invention relates to an infrared radiation illumination measuring instrument and a method using the measuring instrument to measuring infrared radiation illumination, belonging to the field of optics, and solving the problems of inaccurate and unreasonable calibration, large error, low precision of detecting weak signals, large size and inconvenience in carrying existing in the current radiation illumination measuring instrument. In the infrared radiation illumination measuring instrument, incident parallel light beams are focused through a main objective lens, and output light beams are modulated through a modulation disc to a first relay lens, a light filter, an attenuation slice group and a second relay lens and is then incident onto the photosurface of a photoelectric detector. The photoelectric detector outputs an electrical signal, the electrical signal is amplified and carries out phase locking and AD (Analog to Digital) conversion, and a voltage signal is output to a computer. The rotational speed of a modulation disc motor is controlled, and a driving circuit controls the modulation of the modulation disc and controls the phase locking of a lock-in amplifier. The measuring instrument uses a standard blackbody to carry out calibration to obtain the relationship between the voltage signal and the infrared radiation illumination, and the measurement to the infrared radiation illumination of an infrared target simulator is realized.

Description

technical field [0001] The invention relates to an infrared radiation illuminance measuring instrument and a measuring method thereof, belonging to the field of optics. Background technique [0002] Infrared target simulators are widely used in the research of military weapons, such as the detection of infrared homing warheads, spaceborne and airborne infrared remote sensing and telemetry equipment. The accuracy and stability of the infrared target simulator need to be guaranteed by the calibration and measurement of the irradiance at the exit pupil. With the continuous deepening of industrial production and military scientific research, the measurement method of irradiance has made great progress, and many countries have invested a lot of manpower and material resources to conduct in-depth research on the calibration and measurement methods of irradiance. The measurement of the output irradiance of the infrared imaging target / interference simulator can be divided into two ...

Claims

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Application Information

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IPC IPC(8): G01J1/42G01J1/44
Inventor 萧鹏杨森戴景民
Owner HARBIN INST OF TECH
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