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Deep ultraviolet, visible, near infrared radiation calibration source device

A near-infrared radiation, deep ultraviolet technology, applied in the use of multiple reflections to generate spectra, spectrum generation, etc.

Active Publication Date: 2021-05-28
合肥泰达光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no radiation calibration in the ultraviolet band of the 0.8-meter camera at the exit. The purpose of this application is to solve the requirements of the deep ultraviolet, visible, and near-infrared radiation calibration source device to adapt to quantitative remote sensing, using color temperature and solar color temperature The method of combining the short-arc xenon lamp and the halogen tungsten lamp to simulate the stable spectral radiation output in the deep ultraviolet, visible and near-infrared wide spectral range fills the gap in the current domestic camera calibration in the ultraviolet band

Method used

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  • Deep ultraviolet, visible, near infrared radiation calibration source device
  • Deep ultraviolet, visible, near infrared radiation calibration source device
  • Deep ultraviolet, visible, near infrared radiation calibration source device

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Embodiment 1

[0030] Such as figure 1 As shown, a calibration source device for deep ultraviolet, visible, and near-infrared radiation includes an integrating sphere 10, an outlet and an inlet are provided on the integrating sphere 10, and a light source assembly is used to provide a known and stable radiance input Camera radiation calibration; the light source assembly includes a xenon light source and a tungsten halogen light source. The xenon light source is arranged on one side of the integrating sphere 10, and the light emitted by the xenon light source enters the integrating sphere 10 through the entrance, and is used for calibration of the camera in the deep ultraviolet band. standard; the halogen tungsten light source is arranged in the integrating sphere 10, and is used for calibrating the camera in the visible and near-infrared bands.

[0031] This application adopts the method of combining the short-arc xenon lamp 21 and the halogen tungsten lamp 31 whose color temperature is clo...

Embodiment 2

[0039] The structure of this embodiment is basically the same as that of Embodiment 1, and the similarities will not be described in detail. The difference is:

[0040] This embodiment also discloses a method for using a deep ultraviolet, visible, and near-infrared radiation calibration source device, which specifically includes the following steps:

[0041] (1) Calculation of radiance at the light outlet:

[0042] Calculate the output radiation flux of the light source according to the formula (1) of Planck's black body radiation according to the typical color temperature characteristics of the short-arc xenon lamp light source.

[0043]

[0044] In the formula, C1 and C2 are Planck's constants, and T is the color temperature of the short-arc xenon lamp light source, which is 5800K, which is relatively close to the color temperature of the sun. The calculated output radiant flux distribution of the short-arc xenon lamp is as follows: Figure 3-6 shown.

[0045] (2) Anal...

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Abstract

The present invention relates to the technical field of deep-ultraviolet, visible and near-infrared radiation calibration of aviation and space-borne cameras, in particular, it relates to a deep-ultraviolet, visible and near-infrared radiation calibration source device, which also includes a light source assembly for providing a Camera radiometric calibration with known stable radiance input; the light source assembly includes a xenon light source and a tungsten halogen light source, the xenon light source is arranged on one side of the integrating sphere, and the light emitted by the xenon light source enters the integrating sphere through the entrance In the sphere, it is used to calibrate the camera in the deep ultraviolet band. In this way, this application adopts the method of combining short-arc xenon lamps and halogen tungsten lamps with a color temperature closer to the sun's color temperature to simulate deep ultraviolet, visible, and near-infrared wide spectral ranges. The spectral radiation output effectively solves the radiation calibration of the camera in the ultraviolet band at the exit of 0.8 meters, and fills the gap in the current calibration of the domestic camera in the ultraviolet band.

Description

Technical field: [0001] The invention relates to the technical field of deep-ultraviolet, visible and near-infrared radiation calibration of aviation and spaceborne cameras, in particular to a deep-ultraviolet, visible and near-infrared radiation calibration source device. Background technique: [0002] Integrating sphere radiation source is a very excellent calibration light source, and the surface uniformity and stability of its output radiance are unmatched by ordinary light sources. In the field that needs to use surface light source, it is widely used in the laboratory calibration of optical detectors, and the ground radiation calibration before the launch of space optical remote sensing instruments. Therefore, the stability and accuracy of the radiation source are very critical for radiation calibration, which directly affects the detection results of the calibrated instrument. In the prior art, there is no radiation calibration in the ultraviolet band of the 0.8-mete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/26
CPCG01J3/26
Inventor 沈政国
Owner 合肥泰达光电科技有限公司