Diffractive optical elements are widely used in optical systems due to their excellent dispersion characteristics. Precision molding technology is an effective way to solve mass optical processing. Based on the precise molding of the chalcogenide glass diffractive optics, in this paper microstructure filling and process parameter sensitivity of diffractive optical elements are analyzed. The research results show that the use of appropriate process parameters can ensure the filling of diffractive microstructures. The cooling rate in the slow cooling stage is the most important factor affecting the surface shape.
In modern street battle, counter-sniper operations have become the main issue. However, due to the strong unidirectionality of laser beam, it is necessary to shape the laser beam to became useful. At the same time, in order to improve the detection efficiency, the energy of the laser beam is required to be as concentrated as possible, and the detection range is as wide as possible. Therefore, for meeting the requirements, comparing cylindrical with free-form surface prism on the shaping affection The result shows best shaping effect is achieved by using the free-form surface prism. In order to ensure that the laser energy loss is small, the manufracturing processing of freeform prism is analyzed. PSD(power spectral density) characteristics of the optical element surface and its influencing factors are discussed. So as to achieve the laser detection efficiency and detection distance requirements.
With the development of optical components towards low surface damage and low scattering characteristics, more and more attention has been paid to the surface integrity of optical components. Grinding is a common rough machining process for precision optical components, and its surface quality affects the subsequent polishing efficiency and the surface integrity of optical components directly. Therefore, in this paper, studies the grinding surface morphology of ZF62 optical glass material from many aspects such as grinding wheel modeling, surface formation mechanism, and abrasive movement analysis. The paper models the grinding wheel based on the power spectral density (PSD) of the grinding wheel surface, and verifies the effectiveness of the modeling method through experiments. Basing on analyzing the surface roughness with different grinding parameters, there are conclusions as follow: The modeling of the grinding wheel surface based on PSD could effectively simulate and analyze the grinding surface of the grinding wheel. Both the simulation experiment and the actual experiment show that the consistency of the trend. The surface roughness decrease with the increasing of the grinding speed and increase with the increasing of feed rate and the grinding depth.
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