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Wide-spectrum pulsed light detector based on photoacoustic effect and detection method

A photoacoustic effect and pulsed light technology, applied in the field of sensors, can solve the problem of pulsed light measurement response that cannot be wide-spectrum, and achieve the effect of convenient use and accurate measurement

Inactive Publication Date: 2020-01-14
JINAN UNIVERSITY
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Problems solved by technology

[0005] Aiming at the problems existing in the prior art that cannot measure wide-spectrum pulsed light or respond slowly, the present invention provides a wide-spectrum pulsed light detector and detection method based on the photoacoustic effect

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  • Wide-spectrum pulsed light detector based on photoacoustic effect and detection method
  • Wide-spectrum pulsed light detector based on photoacoustic effect and detection method
  • Wide-spectrum pulsed light detector based on photoacoustic effect and detection method

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Embodiment Construction

[0027] see figure 1 , a wide-spectrum pulsed light detector based on the photoacoustic effect, comprising: a light-to-acoustic module, an acoustic coupling module 13, an ultrasonic detection module, a signal line 16 and a housing 17; the light-to-acoustic module serves as a probe, and the light-to-acoustic module The transacoustic module includes a focusing lens group 11 and a photoacoustic thin film 12 with wide-spectrum light absorption characteristics, and the ultrasonic detection module includes a piezoelectric thin film 14 and a sound-absorbing material 15; The module 13, the piezoelectric film 14, and the sound-absorbing material 15 are arranged in sequence, and the photoacoustic film 12, the acoustic coupling module 13, the piezoelectric film 14, and the sound-absorbing material 15 are arranged in the inner cavity formed by the shell 17, and the focusing lens group 11 is arranged on the top of the housing 17 and outside the housing 17, the sound-absorbing material 15 is...

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Abstract

The invention relates to a wide-spectrum pulsed light detector based on a photoacoustic effect. The wide-spectrum pulsed light detector comprises a light-to-sound module, a sound coupling module, an ultrasonic detection module, a signal line and a shell; the light-to-sound module is used as a probe, and the light-to-sound module includes a focusing lens group and a photoacoustic thin film with a wide-spectrum light absorption characteristic; the ultrasonic detection module includes a piezoelectric thin film and a sound absorbing material; the focusing lens group, the photoacoustic thin film, the sound coupling module, the piezoelectric thin film, and the sound absorbing material are arranged in sequence; and the photoacoustic thin film, the sound coupling module, the piezoelectric thin film and the sound absorbing material are arranged in an inner cavity formed by the shell. The wide-spectrum pulsed light detector uses the photoacoustic thin film based on the photoacoustic effect, thephotoacoustic thin film generates ultrasound due to the photoacoustic effect, so that the problem of wavelength selectivity of a photoelectric effect light detector is solved.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a photoacoustic effect-based wide-spectrum pulse light detector and a detection method. Background technique [0002] With the continuous development of pulsed light technology, the use of pulsed light is becoming more and more extensive. For example, in 3D printing, (335nm) ultraviolet pulsed light irradiation is required to cure liquid photosensitive resin; industrial use of pulsed light (808nm, 1064nm) for marking , cutting, welding, etc.; ophthalmic surgery uses (1030-1064nm) pulsed light as a femtosecond laser knife; beauty and whitening (560nm-1200nm) pulsed light irradiation is commonly used to make pigmented spots absorb heat and disintegrate; pulsed light is useful in medical imaging (532nm-1064nm) photoacoustic imaging system. The above-mentioned applications all utilize light-to-heat conversion, and different applications have inconsistent requirements for light. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/42
CPCG01J1/42G01J2001/4238
Inventor 付勇计钟赵传熙麦文杰
Owner JINAN UNIVERSITY
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