Method and device for measuring scattered light space distribution

A technology of spatial distribution and scattered light, applied in the field of optical detection, can solve the problem of inability to measure the distribution of reflected light intensity, and achieve the effect of reducing measurement time, improving measurement accuracy and enhancing reliability

Inactive Publication Date: 2009-07-15
CHINA AGRI UNIV
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  • Description
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  • Application Information

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Problems solved by technology

However, for some samples with strong selective absorption for certain wave bands, such as leaves with strong absorption in the blue and red light bands of visible light, it is impossible to measure the reflected light intensity distribution of these samples in these bands

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  • Method and device for measuring scattered light space distribution
  • Method and device for measuring scattered light space distribution
  • Method and device for measuring scattered light space distribution

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Embodiment Construction

[0025] The invention provides a method and a device for measuring the spatial distribution of scattered light, which are used for agricultural information detection and computer realistic graphics display. exist figure 1 with figure 2In the schematic diagram of the overall structure of the system shown, the scattered light measurement device is composed of a light source component, a sample holder, a slide rail, a detection array slider, a control and a transmission cabinet. In the middle of the table top of the control and transmission cabinet 5, the slide rail 1 and the detection array slider 2 are supported by the sample holder pillar 9, and the sample holder includes a U-shaped bracket 3, a sample holder pillar 9, a sample ring 6, a rotating handle 7 and a fixed button 8. The U-shaped bracket 3 of the sample rack is fixed on the top of the sample rack pillar 9, and the sample ring 6 is supported on the U-shaped open end of the U-shaped bracket 3 of the sample rack by the...

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Abstract

The invention discloses a method and a device for measuring the spatial distribution of scattered light, which belong to the technical field of optical detection. In the middle of the table top of the control and transmission cabinet, the slide rail and the detection array slider are supported by the pillar of the sample holder. The sample holder is fixed on the top of the pillar of the sample holder. The sample holder is installed in the center of the entire measuring device, and the sample ring is supported by the sample holder. , the light source assembly is fixed on the column of the light source assembly on the left side of the table; the center of the sample ring is on the same horizontal line as the optical axis of the light source. The entire measurement system is controlled by a computer control interface, and the wavelength of the incident light is changed by using laser diodes of different wavelengths as light sources. The scattered light intensity of the sample is detected by the detection array slider arranged on the 1 / 4 arc, and the system can accurately measure the BRDF / BTDF measurement value of plant leaves and other samples under the selected absorption wavelength in a short period of time. Related technologies for agricultural information detection and computer realistic graphics display.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to a method and a device for measuring the spatial distribution of scattered light, which are used for agricultural information detection and computer realistic graphic display related technologies. Background technique [0002] The scattered light distribution on the surface of an object usually uses the bidirectional reflectance distribution function (BRDF) and the bidirectional transmission distribution function (BTDF) to describe the scattering distribution of reflected light and the scattering distribution of transmitted light, respectively. The value of BRDF (or BTDF) is determined by the wavelength of incident light (W), the direction of incident light (polar angle θ i， Azimuth φ i ), reflected light direction (polar angle θ r， Azimuth φ r ) (or transmitted light direction (polar angle θ t， Azimuth φ t )) These five variables are determined. Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/47G01N21/17
Inventor 劳彩莲李保国郭焱
Owner CHINA AGRI UNIV
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