Processing method of optical window of differential pressure environment
A processing method and technology of environmental optics, applied in optics, optical components, installation, etc., can solve problems such as optical window distortion and aberration, and achieve the effect of high surface shape accuracy, light weight and strong operability
Active Publication Date: 2017-09-08
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The technical problem to be solved by the present invention is: when the optical window processed by the traditional method is used in the pressure difference condition, the pressure difference causes the deformation of the optical window to produce aberrations
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0021] Such as figure 1 As shown, a method for processing an optical window in a differential pressure environment, the device used is mainly composed of: a sealed cavity 1, an optical window 2, an interferometer 3, an interface flange 4, an air extraction flange 5, and a standard reflector 6.
[0022] The method steps are as follows:
[0023] Step S1: The material of the optical window is fused silica, the diameter is 200mm, and the thickness is 15mm. It is divided into two sides, A and B. Firstly, the A side is processed to the required surface shape RMS<λ / 10 according to the conventional method, and then the B side is semi-finished. Surface shape RMS is 2.1λ;
[0024] Step S2: Design a sealed chamber with a flange, in which the suction flange is connected to the suction pump (working pressure range: 101325Pa~1×10 -2 Pa); the interface fla...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a processing method of an optical window of a differential pressure environment. A surface A and a surface B of the optical window are respectively arranged in different pressure environments for processing. The surface A is processed in a normal pressure, then a sealing cavity is designed, the optical window is arranged on the sealing cavity, and the surface A is arranged inwardly; the internal and external pressure difference of the sealing cavity is adjusted to be the pressure difference [delta]P of the optical window during practical usage, and the surface B is processed; and the transmission surface shape of the optical window is detected by employing an apparatus, and if the precision of the transmission surface shape is insufficient, the surface B is continuously processed until the transmission surface shape satisfies the index requirement. According to the method, the optical window is processed by employing the practical differential pressure condition, and the optical aberration of the optical window brought by pressure deformation in the differential pressure environment by the conventional method can be made up.
Description
technical field [0001] The invention relates to the field of optical element processing, and specifically refers to a method for processing an optical window used under a differential pressure condition; the method simulates the differential pressure condition to deform the optical window, and then processes the optical window. This method can avoid the deterioration of image quality caused by the deformation of the optical window when the traditional optical window works under the pressure difference condition; this method can be used in various pressure difference environments, such as hydraulic pressure, air pressure, vacuum and so on. Background technique [0002] Optical windows are widely used in optical systems, especially in underwater detectors, high-altitude high-speed aerial cameras, space cameras, vacuum lasers and other systems. The above systems are often in a complex pressure environment. The optical window not only plays the role of ensuring light transmissio...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/00
CPCG02B7/007
Inventor 任晓坜翟嘉任戈史建亮
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI