Vacuum ultraviolet filter type brightness meter

Abstract

The invention provides a vacuum ultraviolet light filter type brightness meter. The vacuum ultraviolet light filter type brightness meter comprises a diaphragm (2), a light filter wheel (5), a detector (1), an amplifier (3) and a collector (4) which are sequentially arranged in a light path, a diaphragm (2) in the light path acquires light radiation of light to be measured emitted by the light source to be measured; the optical filter wheel (5) is used for splitting incident light to obtain quasi monochromatic light; the detector (1) is used for performing photoelectric conversion on the optical radiation and then outputting an electric signal; the amplifier (3) is used for amplifying the electric signal; the collector (4) collects the amplified electric signal and calculates the spectral radiation brightness value of the light to be measured according to the collected electric signal. The device is used for measuring the radiance of the vacuum ultraviolet wave band of 115-200 nm, and calculating the spectral radiance value of the to-be-measured light according to the collected electric signal.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum ultraviolet standard equipment, and in particular relates to the design and development of a vacuum ultraviolet filter type brightness meter capable of working normally under vacuum conditions. Background Art

[0002] Vacuum ultraviolet photons of 115nm to 200nm in the space environment mainly come from the radiation generated by the interaction between solar high-temperature plasma, ionospheric plasma, interplanetary high-energy particles and the Earth's magnetosphere. Detection of 115nm to 200nm radiation is very suitable for overall detection of solar eruptions, ionosphere, and space environment disturbances, and has advantages in space environment detection that other methods do not have.

[0003] With the rapid development of space exploration technology, vacuum ultraviolet remote sensing technology has become an important means of space exploration and an important way for humans to understand the natural world. Application research in this band has also been launched. Many natural phenomena can be observed in the vacuum ultraviolet band, such as ionospheric disturbance information, the physical composition of the sun and its changing laws, the earth's atmospheric airglow and aurora. At the same time, many stars in the universe have very high temperatures, and many of their radiation peaks are in the vacuum ultraviolet spectrum. By studying the radiation spectrum, we can know the composition of stars and the physical and chemical changes that occur in them, understand the mechanism of interaction between the sun and the earth's atmosphere, invert the content of various trace gases and aerosols in the atmosphere, and realize real-time monitoring of the atmospheric environment.

[0004] During the development of vacuum ultraviolet space payloads, a vacuum ultraviolet filter-type brightness meter is required to calibrate its spectral radiation brightness response. The accuracy of its value is directly related to the inversion accuracy of the measurement data. China does not yet have the corresponding development capabilities of vacuum ultraviolet filter-type brightness meters, which is a blank area. Summary of the invention

[0005] The purpose of the present invention is to provide a vacuum ultraviolet filter type brightness meter, which is mainly used to measure the radiation brightness of the vacuum ultraviolet band of 115nm to 200nm, and calculate the spectral radiation brightness value of the light to be measured based on the collected electrical signal.

[0006] The present invention comprises an aperture, a filter wheel, a detector, an amplifier and a collector which are sequentially arranged in the optical path;

[0007] The light radiation emitted by the light source to be tested is split by the aperture and filter wheel in the optical path to obtain quasi-monochromatic light; the detector is used to photoelectrically convert the monochromatic light into an electrical signal; the amplifier and collector respectively amplify and collect the electrical signal, and calculate the spectral radiation brightness value of the light to be tested based on the collected electrical signal. The brightness test of vacuum ultraviolet light waves is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A vacuum ultraviolet detector linearity calibration device DETAILED DESCRIPTION

[0009] The preferred embodiment of the present invention will be further described below in conjunction with the accompanying drawings:

[0010] The invention comprises an aperture 2, a filter wheel 5, a detector 1, an amplifier 3 and a collector 4 which are sequentially arranged in the optical path.

[0011] The aperture 2 in the optical path is used to obtain the optical radiation of the light to be measured emitted by the light source to be measured.

[0012] The filter wheel 5 is used to split the incident light to obtain quasi-monochromatic light.

[0013] The detector 1 is used to perform photoelectric conversion on the optical radiation and then output an electrical signal.

[0014] The amplifier 3 is used to amplify the electrical signal.

[0015] The collector 4 is used to collect the amplified electrical signal and calculate the spectral radiation brightness value of the light to be measured based on the collected electrical signal.

[0016] Although the technical solutions of the present invention have been described with reference to the best embodiments, it is easy for those skilled in the art to understand that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the basic principles of the present invention, the embodiments and the specific technical features therein - such as the modules - may be split, combined or changed, and the technical solutions after splitting, combining or changing will still fall within the protection scope of the present invention.

Claims

1. A vacuum ultraviolet filter type brightness meter, characterized in that: It comprises an aperture (2), a filter wheel (5), a detector (1), an amplifier (3) and a collector (4) which are sequentially arranged in an optical path; The aperture (2) in the optical path obtains the optical radiation of the light to be measured emitted by the light source to be measured; the filter wheel (5) is used to split the incident light to obtain quasi-monochromatic light; the detector (1) is used to perform photoelectric conversion on the optical radiation and output an electrical signal; The amplifier (3) is used to amplify the electrical signal; The collector (4) collects the amplified electrical signal and calculates the spectral radiation brightness value of the light to be measured based on the collected electrical signal.

Images