Integral Ball Product Introduction: Jingyi Reflectivity Integral Ball
Introduction to the Integral Ball
The integrating sphere is a hollow sphere, also known as a photometric sphere, a luminous sphere, etc. Usually, one or several windows are opened on the outer wall of the integrating sphere to serve as the light inlet, sample outlet, and light output outlet. Some integrating spheres are also equipped with standard whiteboards, optical traps, sample holders, hole plugs and other integrating sphere accessories to assist with various optical measurement requirements, etc. The inner wall is coated with an ideal white high diffuse reflection material, and the light entering the integrating sphere is reflected multiple times by the diffuse reflection layer on the inner wall, resulting in a uniform illumination that can eliminate the influence of uneven light beams. To achieve high measurement accuracy, the aperture ratio of the integrating sphere should be as small as possible.
The aperture ratio is defined as the ratio of the area of the sphere at the opening of the integrating sphere to the area of the entire inner wall of the sphere. Each integrating sphere has a wide range of applicability and can be combined with spectrometers, optical fibers, light sources, and various optical measurement devices to form a system for various sample measurements, such as sample surface reflectivity, sample transmittance, light source radiation, and so on. The material of the diffuse reflection surface on the inner wall of the integrating sphere: The material of the diffuse reflection surface on the inner wall of the integrating sphere determines the service life, accuracy, stability, and so on of the integrating sphere. Usually, the materials of the diffuse reflection surface on the inner wall of the integrating sphere include PTFE, BASO4, and MGO2. The reflectivity curves of these three materials are shown in Figure (1):
From Figure (1), it can be seen that in the spectral band of 200-2500nm, the reflectivity of PTFE is higher than that of BASO4 and MGO2, and it has excellent Lambert properties and a flat spectrum.
The parameters of different diffuse reflective coating materials are shown in Figure (2)
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Diffuse reflection layer material
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model
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Spectral reflectance value
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spectral range
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Optimal coating thickness
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Highly reflective baso4
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r98
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0.985
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350-1600nm
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1mm
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mgo2
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r90
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0.9
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350-800nm
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1mm
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Economic Baso4
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r93
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0.93
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350-800nm
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1mm
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F4 spray coating
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f4
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0.98
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380-780nm
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2mm
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F4 spray coating
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f4
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0.33
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320-380nm
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2mm
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F4 sintering
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F4 sintering
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0.96-0.98
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780-2200nm
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2mm
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Reflectivity integrating sphere
Excellent Lambert Body
High reflectivity and excellent Lambertian reflective surface
Product Introduction
Jingyi's reflectivity integrating sphere is made of imported PTFE material foam molding, covering the UV visible near-infrared spectral range, and has high reflectivity, good thermal stability, and chemical stability within this spectral range, making it less prone to yellowing and powdering. The spherical material is made of alumina, with an inner diameter of 38mm and a sample port diameter of 9.5mm. It comes with a fixed bracket for easy testing.
The reflectivity integrating sphere has three openings, one is connected to the light source through the light inlet, and a collimating mirror is placed at the front end of the light inlet, which is at an angle of 8 degrees to the normal
Product Features
1. High reflectivity and excellent Lambertian reflective surface.
2. High stability and not easily deteriorated.
Application Fields
1. Spectral reflectance.
2. Reflection system design.
3. Measurement of reflectance of solid samples.
4. Measurement of reflectance of turbid liquid.
5. Reflectance of opaque samples in powder and film.
Product Specifications
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project
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parameter
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model
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jy-ffios38
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inner diameter
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Conventional diameter 38mm (customizable)
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Sample mouth
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Conventional diameter 9.5mm (customizable)
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Light inlet
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8 ° input sma905 with collimating lens
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light outlet
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90 ° output sma905
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Inner liner material
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High quality PTFE
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Applicable spectral range
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200-2500mm
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*Note: Sizes, ports, and coatings can be customized
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product image
Sample mouth
light outlet
8 ° light inlet system
Product Application
Measurement of reflectance of opaque samples
Measurement of Reflectance of Ore Powder Samples
Measurement of Reflectance of Solid Samples
Measurement of Reflectance of Plastic Samples
Measurement of silicon wafer sample rate
Measurement of Reflectance of Alloy Samples
