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Fabry-Perot cavity and its manufacturing method, interferometer and optical wavelength measurement method

A technology of Fabry-Perot cavity and interferometer, applied in optical radiation measurement, measuring device, measuring optics, etc., can solve the problems of poor overall stability and poor measurement accuracy, and achieve the effect of improving measurement accuracy and ensuring parallel accuracy

Active Publication Date: 2019-02-05
BOE TECH GRP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem of poor overall stability of the Fabry-Perot interferometer in the prior art, resulting in poor measurement accuracy, an embodiment of the present invention provides a Fabry-Perot cavity and its manufacturing method, interferometer and light wavelength Measurement methods

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  • Fabry-Perot cavity and its manufacturing method, interferometer and optical wavelength measurement method
  • Fabry-Perot cavity and its manufacturing method, interferometer and optical wavelength measurement method
  • Fabry-Perot cavity and its manufacturing method, interferometer and optical wavelength measurement method

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Embodiment Construction

[0066] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0067] figure 2 It is a structural schematic diagram of a Fabry-Perot cavity shown in an embodiment of the present invention. The Fabry Perot cavity 10 may comprise:

[0068] Seal the cavity.

[0069] The sealed cavity includes: two substrates parallel to each other and a liquid crystal layer 12 arranged between the two substrates.

[0070] The two substrates include a first substrate 11a and a second substrate 11b. Light can be incident from the first substrate 11a, pass through the liquid crystal layer 12, and exit from the second substrate 11b. Different voltages can be applied to the two substrates to change the liquid crystal. The deflection angle of layer 12.

[0071] To sum up, the Fabry-Perot cavity provided by the embodim...

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Abstract

The invention discloses a Fabry-Perot cavity, a manufacturing method thereof, an interferometer and a light wavelength measuring method, and belongs to the field of optics. The Fabry-Perot cavity includes: a sealed cavity; the sealed cavity includes: two substrates parallel to each other and a liquid crystal layer arranged between the two substrates; the two substrates include a first substrate and a second substrate. Two substrates, light can be incident from the first substrate, pass through the liquid crystal layer, and exit from the second substrate, and different voltages can be applied to the two substrates to change the deflection angle of the liquid crystal layer. The invention does not need to adjust the distance between the two substrates, ensures the parallelism between the two substrates, and improves the measurement accuracy. The invention is used to measure the wavelength of incident light.

Description

technical field [0001] The invention relates to the field of optics, in particular to a Fabry-Perot cavity, a manufacturing method thereof, an interferometer and a light wavelength measuring method. Background technique [0002] A Fabry-Perot interferometer is a multi-beam interferometer that can be used to accurately measure the wavelength of incident light. It is widely used in scientific research, production and teaching. Because of its simple structure and easy use, many scientific research institutions, factories, schools and other organizations choose to build Fabry-Perot interferometers to measure the wavelength of incident light. [0003] Fabry-Perot interferometer includes Fabry-Perot cavity and lens, please refer to figure 1 , which shows the working principle diagram of the existing Fabry-Perot cavity, the Fabry-Perot cavity includes M and M', M and M' are two parallel glass plates, and these two glass plates The opposing inner surfaces are coated with a highly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B9/02G01J9/02
CPCG01B9/02016G01B9/02019G01J9/0246G02F1/13473G02F1/216G02F1/29G02F1/213G01B9/02011G02F1/133528G02F1/1339G02F1/1393G02F2202/28
Inventor 李忠孝
Owner BOE TECH GRP CO LTD
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