Processing detecting method of ultraviolet combined zero-level wave plate
A detection method and wave plate technology, applied in the optical field, can solve the problems of large light absorption, difficult to eliminate temperature effects, and inability to test.
Inactive Publication Date: 2011-09-14
FUJIAN CASTECH CRYSTALS
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Problems solved by technology
Disadvantages: When A and B of a single piece are measured together with the optical plastic plate, the optical plastic plate has stress birefringence, and the temperature effect generated during the polishing process is difficult to eliminate. The accurate test can only be the detection of a single product after it is placed on the plate. As a result, the delay accuracy error of the combined zero-order wave plate is greater, especially for the combined zero-order wave plate in the ultraviolet band, the uncertainty is more serious
[0009] In the traditional method of testing, the UV transmittance of the photoresist is very low, and the light absorption is large, resulting in a weakened test light intensity or even unable to test
Therefore, it is difficult to obtain a high-precision UV combined zero-order wave plate using traditional methods.
Method used
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Embodiment 1
[0022] Embodiment 1: Select glass with low expansion coefficient, cut and roll into a circle, and the outer diameter is Φ, such as Figure 5 , drill a hole with a diameter of Φ1 with a drill press or ultrasonic waves and it is symmetrical, and Φ1 is smaller than the diameter of the ultraviolet combined zero-order wave plate is Φ2, such as Image 6 , fine grinding, polishing, double-sided processing into flatness ≤ λ / 20, perforated light plastic sheet with good finish.
[0023] Processed with material Al such as Figure 8 tooling.
[0024] At the same time, select the birefringent crystal material, cut the material into a circle, such as Image 6 with Figure 8 First, finely grind and double-side polish the multi-stage wave plates A and B to control the flatness and smoothness of both sides. Select the side with better smoothness and flatness of wave plate A, and place the optical glue at the through hole of the optical plastic plate; Select the smoothness and flatness of t...
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The invention provides a processing detecting method of a ultraviolet combined zero-level wave plate. The traditional method for processing the zero-level wave plate comprises optically cementing the wave plate on an optical cement board and performing the polishing measurement; since the optical cement board has stress birefringence and the temperature influence produced in the polishing process is hard to eliminate, the delay precision error is great when the optical cement board is measured together, a high-precision product is hard to obtain by using the traditional method. In the processing detecting method provided by the invention, a perforation low-expansion coefficient optical cement board with a flatness polished by lambda / 20, the perforations are symmetrical to each other, a part of ultraviolet combined zero-level wave plate is optically cemented on the through hole of the optical cement board, the diameter of the through hole of the optical cement board is less than the external diameter of the ultraviolet combined zero-level wave plate, therefore, the light can directly irradiate to the ultraviolet combined zero-level wave plate through the perforations when processing testing is carried out; and the circular polishing and detection are convenient to perform and the delay precision can be controlled better.
Description
【Technical field】 [0001] The invention relates to a method for processing and detecting a polarization element in the field of optics. In particular, it is a processing and testing method for an ultraviolet combined zero-order wave plate. 【technical background】 [0002] In the field of optics, with the development of polarization optics, ultraviolet lasers, and ultraviolet optical testing technology, the application of ultraviolet combined zero-order waveplates is becoming more and more extensive. According to the properties of various types of wave plates and the combination with different devices, optical isolators, interferometers and attenuators can be made, so as to realize optical measurement and modulation of light intensity, and improve measurement accuracy, for example: λ / 4 A wave plate combined with a polarized linear polarizer can obtain circularly polarized light. [0003] The crystal thin plate whose surface is parallel to the optical axis is called a wave pla...
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Login to View More IPC IPC(8): G02B5/30G01M11/02
Inventor 朱一村郑熠吴少凡
Owner FUJIAN CASTECH CRYSTALS