Device and method for measuring transmission ratio and reflection ratio of hollow glass

A technology of reflectance and transmittance, applied in the field of optical detection of building energy-saving glass, can solve the problems of inability to detect the transmittance and reflectance of large pieces of tempered glass, inability to directly measure the reflectance of insulating glass, and inability to adapt to the detection of insulating glass. The effect of wasting material, improving applicability, and expanding detection range

Active Publication Date: 2017-08-18
BEIJING AOPTEK SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When measuring the transmittance and reflectance of insulating glass in the prior art, it is impossible to directly non-destructively test the transmittance and reflectance of each piece of glass and the whole in the finished insulating glass without dismantling; specifically, the existing laboratory The operation method of the detection is to manually disassemble the insulating glass, then cut each piece of glass into a size that can be tested by the instrument, detect the transmittance and reflectance of each single glass, and then calculate the overall insulating glass through the theoretical formula. Transmittance and Reflectance
The disadvantages of this test are: (1) To destroy the structure of the insulating glass, the glass needs to be dismantled; (2) The glass needs to be cut to meet the size requirements of the testing instrument
Since tempered glass cannot be cut, the laboratory cannot detect the transmittance and reflectance of large pieces of tempered glass; (3) It can only be tested in the laboratory, and cannot be detected for the installed insulating glass
The reasons for the above-mentioned shortcomings are (1) the traditional detection instrument is limited by the reflection optical path, and can only detect a certain thickness of single glass, and cannot directly measure the reflectance of the insulating glass as a whole; (2) the traditional detection instrument is limited by the sample chamber. It can only measure a single piece of glass within a certain range of length and width; (3) Traditional testing instruments are generally desktop instruments, which are limited by volume and weight and cannot adapt to the detection of installed insulating glass

Method used

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  • Device and method for measuring transmission ratio and reflection ratio of hollow glass
  • Device and method for measuring transmission ratio and reflection ratio of hollow glass
  • Device and method for measuring transmission ratio and reflection ratio of hollow glass

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Embodiment 1

[0055] This embodiment provides a device for measuring the transmittance and reflectance of insulating glass, such as Figure 3-9 As shown, it includes: a transmitting device and a receiving device; the hollow glass includes a first glass 9, a hollow structure and a second glass 10;

[0056] The emission device includes a light source 1, a diaphragm 2 and a collimating lens 3 in turn; the light source 1 is used to provide light beams for the device, the diaphragm 2 is used to adjust the amount of incoming light of the light beams, and the collimation The lens 3 is used for collimating and focusing the adjusted beam;

[0057] The receiving device includes a slit adjusting device 4, an integrating sphere 5, a spectrum splitting device 6, a photodetector 7, and a signal acquisition and processing unit 8 in turn; the slit adjusting device 4 is used to adjust the progress of the integrating sphere 5. Amount of light; the integrating sphere 5 is a hollow complete spherical shell, t...

Embodiment 2

[0063] Such as figure 1 As shown, this embodiment provides a method for measuring the transmittance and reflectance of insulating glass using the device described in Embodiment 1, including:

[0064] S101. Measure and calculate the overall transmittance τ of the insulating glass;

[0065] Wherein, the transmitting device includes a light source 1, an aperture 2 and a collimating lens 3; the receiving device includes a slit adjusting device 4, an integrating sphere 5, a spectrum splitting device 6, a photodetector 7 and a signal acquisition and processing unit.

[0066] Specifically, such as image 3 as shown, image 3 The light path in is the transmission light path, the light beam of the transmission light path is emitted from the emitting device, and passes through the hollow glass to obtain transmitted light, and the transmitted light is received and processed by the receiving device to obtain the overall transmittance τ of the hollow glass; The insulating glass includes...

Embodiment 3

[0121] This embodiment provides another method for measuring the transmittance and reflectance of insulating glass using the device described in Embodiment 1. The difference between the method and the method provided in Embodiment 2 is that the outer reflection of the first glass The acquisition method of the inner reflectance ratio of the second glass is different from that of the second glass.

[0122] Specifically, such as Figure 8 Shown, the outside reflectance ρ of the first glass 1 The acquisition process is:

[0123] adjusting the amount of light entering the integrating sphere in the receiving device, and the emitting device shoots the light beam to the hollow glass from the outside of the first glass;

[0124] Corresponding reflections are all obtained after reflection from the first outer surface 12 of the first glass, the second outer surface 13 of the first glass, the second outer surface 14 of the second glass, and the first outer surface 15 of the second glass...

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Abstract

The invention discloses a device and method for measuring transmission ratio and reflection ratio of hollow glass. The device comprises a transmitting device, a receiving device, the transmitting device sequentially comprises a light source, a diaphragm and a collimating lens, the receiving device sequentially comprises a slit adjusting device, an integrating sphere, a spectroscopic device, a photoelectric detector and a signal collecting and processing unit, the integrating sphere is used for collecting all light beams entering the same, the slit adjusting device is used for adjusting light incoming quantity of the integrating sphere, the spectroscopic device is used for splitting the light beams collected by the integrating sphere according to certain wavelength laws, the photoelectric detector is used for converting optical signals of the light beams into electric signals, and the signal collecting and processing unit is used for collecting the electric signals and processing the same to acquire corresponding parameters. The device and the method can realize nondestructive detection of the hollow glass and can detect the transmission ratio and the reflection ratio of integral structure of the hollow glass and each piece of the hollow glass.

Description

technical field [0001] The invention relates to the field of optical detection of building energy-saving glass, in particular to a device and method for measuring the transmittance and reflectance of insulating glass. Background technique [0002] There is a certain cavity between the glass and the glass of the insulating glass; therefore, it has good thermal insulation, heat insulation, sound insulation and other properties; it is mainly used in buildings that require heating, air conditioning, noise or condensation prevention, and is widely used Applied to residences, restaurants, hotels, office buildings, schools, hospitals, shops and other occasions that require indoor air conditioning. It can also be used in doors and windows of trains, automobiles, ships, freezers, etc. [0003] When measuring the transmittance and reflectance of insulating glass in the prior art, it is impossible to directly non-destructively test the transmittance and reflectance of each piece of gl...

Claims

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Application Information

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IPC IPC(8): G01N21/55G01N21/59
CPCG01N21/55G01N21/59G01N2021/558
Inventor 张喆民黄达泉钟星辉苑静许海凤李海燕侯佳音
Owner BEIJING AOPTEK SCI
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