Device and method for measuring overall transmittance, reflectance and color of hollow glass

Abstract

The invention provides a device and a method for measuring overall transmittance, reflectance and color of a hollow glass. The device comprises a transmitting device, a transmission component, a reflection component and a signal acquisition and processing unit. The hollow glass comprises at least two pieces of glass. A cavity is formed between two adjacent pieces of glass. The transmission component and the reflection component are correspondingly located on both sides of the hollow glass, the reflection component and the transmitting device are located on the same side of the hollow glass, the transmitting device is used for emitting a light beam, the transmission component is used for receiving a transmitted light beam passing through the hollow glass; the reflection component is used toreceive the light beam reflected by each piece of glass after the light beam passes through the hollow glass; the signal acquisition and processing unit is used for collecting electrical signals emitted by the transmission component and the reflection component correspondingly, and processes the electrical signals to get corresponding parameters. The device and the method for measuring the overall transmittance, reflectance and color of the hollow glass can realize overall measurement without disassembling the hollow glass structure, and avoids inaccuracy of the measurement result caused by oxidation of a film layer due to disassembly.

Description

technical field [0001] The invention relates to the field of optical detection, in particular to a separate device and method for measuring the overall transmittance, reflectance and color of hollow glass. Background technique [0002] Existing architectural glass is mainly hollow glass structure, and it is mainly based on regular reflection and regular transmission colors. Instruments widely used in object color measurement mainly use diffuse measurement geometric conditions, which cannot measure multiple pieces of glass at the same time, and are not completely suitable for Color measurement of architectural glass. In addition, architectural glass is usually large in size and thickness, and it is difficult for general color measuring instruments to measure the finished product as a whole. [0003] At present, the method mainly used to detect the transmittance-reflectance ratio and color of architectural glass is: disassemble the insulating glass into single pieces of glass...

AI Technical Summary

Problems solved by technology

[0006] 1. Architectural glass is usually a hollow glass structure. Generally, color measuring instruments can only measure single glass, and cannot perform non-destructive measurement on finished architectural glass. The insulating glass must be disassembled, and the overall transmittance and reflectance of the sample cannot be directly measured.

[0007] 2. The glass needs to be cut to the size required by the instrument, complicating the sample preparation process

[0008] 3. Most architectural glass is tempered glass, and tempered glass cannot be cut, so large pieces of tempered glass cannot be detected

[0009] 4. Architectural glass is usually coated with low-e film, which is easy to oxidize the low-e film when exposed to the air, so disassembly will have a great impact on the measurement results

[0010] 5. It is only suitable for sample testing in the laboratory, and cannot carry out on-site testing and acceptance of installed architectural glass

[0012] 1. The measurement geometric conditions of general color measuring instruments are diffuse measurement conditions, and because glass mainly has regular transmission and regular reflection, it can only measure a single piece of glass, not suitable for measuring multiple pieces of glass

[0013] 2. Due to the limitation of the reflective light path of the instrument, when the thickness of the glass sample to be tested is large, it is difficult to completely receive the reflected light signals from each surface of the sample, and it is impossible to directly measure the reflectance of the insulating glass as a whole

[0014] 3. Due to the limitation of the instrument structure, it is impossible to carry out non-destructive measurement on the finished architectural glass, and the insulating glass must be disassembled

[0015] 4. Due to the size limitation of the sample chamber of the instrument, only glass samples within a certain size range can be measured, so the glass must be cut to meet the size required by the instrument, which complicates the sample preparation process

Tempered glass cannot be cut, so large pieces of tempered glass cannot be detected

[0016] 5. Since the low-emissivity film exposed to the air is easily oxidized, the oxidized low-emission film will have a great impact on the measurement results, so the result of measuring the single-piece glass after disassembly and then calculating the overall transmittance-reflectance ratio may be different from that of The finished product before dismantling does not match

[0017] 6. Traditional testing instruments are generally desktop instruments, which are limited by volume and weight. They are only suitable for sample testing in the laboratory, and cannot carry out on-site testing and acceptance of installed architectural glass.

Images