A Measuring Instrument for Spatial Reflection Characteristics of Materials Using Optical Fiber Bundle
A technology of reflection characteristics and fiber bundles, applied in the field of optical measurement, can solve the problems of complex system structure, low angular resolution, low accuracy, etc., and achieve the effect of simple system structure, high angular resolution, and short measurement time.
Active Publication Date: 2017-05-03
CHINA JILIANG UNIV
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Problems solved by technology
These methods generally adopt a rotating dual-axis design in the measurement of spatial angular distribution characteristics, resulting in long measurement time (often several minutes or even more than 30 minutes), low angular resolution, complex system structure, high measurement cost, and high accuracy. Inferior disadvantages
Moreover, these devices can only measure the distribution characteristics of light intensity, but cannot measure the color distribution characteristics in a certain direction and the relationship between light intensity and wavelength.
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[0019] In conjunction with the accompanying drawings, the specific implementation methods provided by the present invention will be further described in detail.
[0020] See attached figure 1 , in the present embodiment, its diameter size of semi-integrating sphere (2) is 1000mm, according to the principle that an optical fiber interface is arranged every 5 ° on the hemispherical surface, a total of 1225 small circular holes are set; material to be measured (1) passes through the first A circular hole (21) is located at the center of the bottom surface of the semi-integrating sphere; the external incident light source (3) is at a position of 45° from the center of the dome; the light trap (4) is also located at 45° from the center of the dome and is about the external incident light source The place where the origin is symmetrical; all the fiber ports in the light-transmitting fiber bundle (5) are processed into spherical optical fiber microlenses for coupling by melting and ...
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Abstract
The invention discloses a material space reflection characteristic measuring instrument using an optical fiber bundle. The instrument includes a material to be measured (1), a semi-integral ball (2), an external incident light source (3), a light trap (4), transmission optical fiber bundles (5), an imaging light cone (6), a light filter disc (7), a CCD camera (8), a computer (9) and a high absorption black coating (10). The internal surface of a hemispherical surface is coated with the high absorption coating, small round holes are arranged on the hemispherical surface of the semi-integral ball according to regular angle distribution, the reflected light signals at all angles of the surface of the material are transmitted by the specially coded optical fiber bundles, the light cone couples the light signals into the photosensitive surface of the CCD camera, and the intensity, the color and the angle distribution of the reflected lights are output by the computer.
Description
technical field [0001] The invention belongs to the technical field of optical measurement, in particular to a material space reflection characteristic measuring instrument using an optical fiber bundle. Background technique [0002] Measuring the reflection characteristics of material space is of great significance in the development of new optical materials, precision optical measuring instruments, building decoration materials and material surface performance analysis and other application fields. It can be used to measure the surface roughness of materials, separate diffuse reflection and specular reflection components, and discover new materials with better optical properties; it can be used to study the surface brightness, gloss, and reflectance of commonly used decorative materials in buildings, so that urban night scenes can be both efficient and efficient. Energy saving; it can also be used to improve the placement angle and structure of solar collector materials, m...
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IPC IPC(8): G01N21/17
Inventor 金尚忠杨初曾珊珊鲁玉红邵茂丰郑健
Owner CHINA JILIANG UNIV