Transmittance spectrum measurement device and method for ultra-narrow band filter

An ultra-narrow-band filter and spectral measurement technology, which is applied in the field of transmittance spectral measurement devices, can solve problems such as low spectral resolution and poor wavelength accuracy, and achieve the effects of simple measurement methods, easy operation, and improved wavelength accuracy

Inactive Publication Date: 2014-12-03
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The present invention aims to overcome the shortcomings of poor wavelength accuracy and low spectral resolution when the traditional spectrophotometer measures the transmittance spectrum of the ultra-narrow-band filter, and provides an ultra-narrow-band filter transmittance with simple and practical structure and low cost. Measurement device and measurement method, and use the device to measure the transmittance spectrum of the ultra-narrow-band filter, so that the measurement results can more accurately characterize the spectral characteristics such as the central wavelength position and spectral bandwidth of the ultra-narrow-band filter

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  • Transmittance spectrum measurement device and method for ultra-narrow band filter
  • Transmittance spectrum measurement device and method for ultra-narrow band filter

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[0012] The present invention will be further described below in conjunction with the drawings.

[0013] Such as figure 1 As shown, the measurement device is mainly composed of a light source system 1, a condenser lens 2, a collimator lens 3, a sample holder 4, a light signal receiving system 5, and a data analysis and processing system 6, and the light source system, condenser lens, collimator lens, The sample holder and the optical signal receiving system constitute the entire optical path system of the measuring device. Place the optical path system on a free optical platform. In order to enable the measuring device to effectively collect the transmitted light signal of the ultra-narrowband filter, adjust the position of the light source system, the condenser lens, the collimator lens, the sample holder and the optical signal receiving port so that they are on the same horizontal optical axis; adjust the condenser lens Position, so that the transmitted light beam will converge at

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Abstract

The invention discloses a transmittance spectrum measurement device and method for an ultra-narrow band filter. The device comprises a light source system, a convergent mirror, a collimating mirror, a sample holder, a light signal receiving system, a data analyzing and processing system and the like. The device is characterized in that the light source system adopts an LED light source with stable high output power, continuous emission wavelength and emission spectrum bandwidth larger than 30 nm; a laser wavelength meter with high wavelength accuracy and high spectral resolution is used as a light signal receiver, a computer is used for data analyzing and processing, and finally a transmittance spectrum curve of the ultra-narrow band filter is obtained. According to the device, the structure is simple and practical, the constructing cost is low, the measurement method is simple, convenient, reliable and rapid, compared with a conventional spectrophotometer, both the wavelength accuracy and the spectral resolution of the device are higher, the actual spectrum performance of the ultra-narrow band filter can be accurately reflected, and the device and the method are particularly suitable for spectral bandwidth measurement and central wavelength locating of the ultra-narrow band filter with the bandwidth in the range of 0.1-1 nm.

Description

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Claims

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Application Information

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Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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