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CN-122016043-A - Light source device, spectrum detection method and computer readable storage medium

CN122016043ACN 122016043 ACN122016043 ACN 122016043ACN-122016043-A

Abstract

The application discloses a light source device, a spectrum detection method and a computer readable storage medium, which comprise a halogen lamp module, a beam collimation module, a band gating and beam splitting modulation module, a beam converging module, an optical absorption cavity and a heat dissipation module, wherein the halogen lamp module is used for emitting an initial continuous spectrum beam with a preset wave band, the beam collimation module is used for collimating the initial continuous spectrum beam to obtain a collimated continuous spectrum beam, the band gating and beam splitting modulation module is used for controlling a first sub-beam corresponding to a preset effective sub-band in the collimated continuous spectrum beam to transmit, controlling a second sub-beam corresponding to an invalid sub-band in the collimated continuous spectrum beam to reflect, the beam converging module is used for converging the first sub-beam so as to irradiate an object to be measured by utilizing the converged beam, the optical absorption cavity is used for receiving the second sub-beam and absorbing the second sub-beam, and the heat dissipation module is used for conducting heat dissipation treatment on the optical absorption cavity. The application can avoid burn of the measured object, prolong the service life of the illumination light source and reduce the cost.

Inventors

  • YANG BIN
  • WANG XUEYAN
  • LI YUAN
  • LIU YUFEI

Assignees

  • 长光驰宇科技(长春)有限公司

Dates

Publication Date
20260512
Application Date
20260228

Claims (10)

  1. 1. A light source device, comprising: The halogen lamp module (1) is used for emitting initial continuous spectrum light beams with preset wave bands; The beam collimation module (2) is used for collimating the initial continuous spectrum beam to obtain a collimated continuous spectrum beam; The band gating and beam splitting modulation component (3) is used for acquiring a preset effective sub-band and a preset ineffective sub-band in the preset band, controlling a first sub-beam corresponding to the preset effective sub-band in the collimated continuous spectrum beam to transmit, and controlling a second sub-beam corresponding to the preset ineffective sub-band in the collimated continuous spectrum beam to reflect; the beam converging module (4) is used for converging the first sub-beams so as to irradiate the measured object by utilizing the converged beams obtained by the converging; an optical absorption cavity (5) for receiving the second sub-beam and absorbing the second sub-beam; and the heat radiation module (6) is used for carrying out heat radiation treatment on the optical absorption cavity (5).
  2. 2. The light source device according to claim 1, wherein the band gating and beam splitting modulation component (3) is specifically configured to obtain a pre-established full-link spectral radiation transmission model when the number of preset effective sub-bands is plural, calculate the respective transmittance of each preset effective sub-band by using the full-link spectral radiation transmission model, and transmit the respective first sub-beam according to each transmittance.
  3. 3. A light source device according to claim 1, characterized in that the beam converging module (4) is a single lens or a lens group (9).
  4. 4. A light source device as recited in claim 1, further comprising: the first heat insulation component is arranged between the optical absorption cavity (5) and the light beam collimation module (2); And the second heat insulation assembly is arranged between the optical absorption cavity (5) and the band gating and beam splitting modulation assembly (3).
  5. 5. A light source device according to claim 1, characterized in that the heat dissipation module (6) comprises heat dissipation fins and a fan, wherein the heat dissipation fins are connected with the optical absorption cavity (5).
  6. 6. The light source device according to claim 1, wherein the band gating and beam splitting modulation component (3) is a coated plate (8), and the coated plate (8) is disposed in the optical path at an angle of 45 ° to the collimated continuous spectrum light beam.
  7. 7. A light source device according to any one of claims 1 to 6, characterized in that the halogen lamp module (1) comprises a halogen lamp and a regulated power supply.
  8. 8. A light source device according to claim 7, characterized in that the beam collimation module (2) is a parabolic mirror (7) and the halogen lamp is arranged at the focal position of the parabolic mirror (7).
  9. 9. A method of spectral detection comprising: Utilizing the halogen lamp module to emit an initial continuous spectrum light beam with a preset wave band; the initial continuous spectrum light beam is collimated through a light beam collimation module, and a collimated continuous spectrum light beam is obtained; Acquiring a preset effective sub-band and a preset ineffective sub-band in the preset band by using a band gating and beam splitting modulation component, controlling a first sub-beam corresponding to the preset effective sub-band in the collimated continuous spectrum beam to transmit, and controlling a second sub-beam corresponding to the preset ineffective sub-band in the collimated continuous spectrum beam to reflect; The first sub-beams are converged by the beam converging module, so that the converged beams obtained by converging are used for carrying out spectrum detection on the measured object; and receiving the second sub-beam by using an optical absorption cavity, absorbing the second sub-beam, and radiating the optical absorption cavity by using a radiating module.
  10. 10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the spectroscopic detection method as claimed in claim 9.

Description

Light source device, spectrum detection method and computer readable storage medium Technical Field The present application relates to the field of spectral imaging and detection technologies, and in particular, to a light source device, a spectral detection method, and a computer readable storage medium. Background Spectral imaging and detection have high requirements for the spectral suitability of the Light source, and the types of Light sources mainly used include halogen lamp Light sources and Light-Emitting Diode (LED) Light sources. For a scene needing to use one or more wave bands to carry out accurate spectrum imaging and detection, the halogen lamp light source has the advantages of wide wave band and continuous spectrum, so the halogen lamp light source has wide application in the fields of food detection, material sorting, color measurement and the like, but how to reduce the influence of useless wave bands in the wide wave band and continuous spectrum and improve the spectrum accuracy of the selected wave band is a key for improving the use effect of the halogen lamp light source. For example, in the internal detection of sugar degree, moisture, rot and the like of fruits and vegetables, a scheme of halogen lamp illumination and spectrum detection is generally adopted, detection is completed based on a substance component characteristic spectrum of a near infrared wave band of 600-1000nm, but a large amount of heat radiation is carried in a wave band of 1000-3000nm, which is ineffective for the detection process, in a halogen lamp light source, and the fruits and vegetables are possibly damaged, and the additional heat effect is a typical problem which needs to be solved in many practical applications of the halogen lamp light source. The LED light source is mainly a narrow-band light source, and is usually used as a light source for spectrum imaging and detection in a mode of combining a plurality of narrow-band LEDs, and the problems of increased cost, poor spectrum space consistency, limited wavelength accuracy in mass production and the like are unavoidable in the mode. In summary, how to effectively solve the common problems of the current spectrum detection method, such as carrying a large amount of heat radiation, possibly damaging the measured object, high cost, limited wavelength accuracy, and the like, is a problem that needs to be solved by those skilled in the art. Disclosure of Invention The application aims to provide a light source device which can avoid burn of a measured object, prolong the service life of an illumination light source and reduce the cost, and provides a spectrum detection method and a computer readable storage medium. In order to solve the technical problems, the application provides the following technical scheme: A light source device comprising: The halogen lamp module is used for emitting an initial continuous spectrum light beam with a preset wave band; the beam collimation module is used for collimating the initial continuous spectrum beam to obtain a collimated continuous spectrum beam; The band gating and beam splitting modulation component is used for acquiring a preset effective sub-band and a preset ineffective sub-band in the preset band, controlling a first sub-beam corresponding to the preset effective sub-band in the collimated continuous spectrum beam to transmit, and controlling a second sub-beam corresponding to the preset ineffective sub-band in the collimated continuous spectrum beam to reflect; the beam converging module is used for converging the first sub-beams so as to irradiate the measured object by utilizing the converged beams obtained by converging; An optical absorption cavity for receiving the second sub-beam and absorbing the second sub-beam; and the heat radiation module is used for carrying out heat radiation treatment on the optical absorption cavity. In a specific embodiment of the present application, the band gating and beam splitting modulation component is specifically configured to obtain a pre-established full-link spectrum radiation transmission model when the number of preset effective sub-bands is multiple, calculate the transmittance corresponding to each preset effective sub-band by using the full-link spectrum radiation transmission model, and transmit the corresponding first sub-beam according to each transmittance. In one embodiment of the present application, the beam converging module is a single lens or a lens group. In one embodiment of the present application, the method further comprises: the first heat insulation assembly is arranged between the optical absorption cavity and the light beam collimation module; and the second heat insulation assembly is arranged between the optical absorption cavity and the band gating and beam splitting modulation assembly. In one specific embodiment of the application, the heat dissipation module comprises heat dissipation fins and a fan, wherein the heat dissipation fins