With the science technology development, Electro-optical devices requires higher demands for optical lens. Less than 10mm small-sized cylindrical lens were fabricated and inspected. With conventional methods, custom designed fixture, cylindrical lens satisfies the designed demands were fabricated on classical polishing machine. A reliable processing procedure was acquired, which can guide the operator successfully fabricate the lens, and also be reference to the fabrication of similar optical lens.
According to the requirements of the military optoelectronic system for the application of the reflector, optical processing experiments were carried out on the SiCp/Al coating nickel phosphorus alloy plane mirror; The optical properties of the SiCp/Al and several commonly used optical materials were compared; The turning test and polishing test of uncoated nickel-phosphorus and nickel-phosphorus-coated aluminum-based silicon carbide were carried out, the optical processing of φ150mm SiCp/Al coating nickel-phosphorus alloy plane mirror was realized, and the high quality and high precision optical surface was obtained. The RMS value of surface accuracy was 1/27λ(λ=632.8nm), The surface roughness Ra was better than 3.3nm, which confirmed the feasibility of using SiCp/Al composites in military optoelectronic systems and met the requirements of precision of the reflector.
Aiming at the processing of infrared optical parts and the adjustment of infrared optical system, key links, such as surface shape change, optical axis deviation, etc and influencing factors were analyzed in detail caused by internal defects and stress of Infrared optical parts, differences in material properties and adjusting tightening force from the aspects of optical processing and opto-mechanical adjustment, whose influence on the final performance and quality of the infrared system was pointed out. On this basis, the problems existing in the current manufacturing process of the infrared optical system were sorted out, and the related technology which was needed to be carried out and the content of continuous attention were put forward to realize the refinement and parameterization of infrared system process control, and improve the manufacturing performance and quality of infrared optical system.
The optical parallelism is an important indicators of isosceles prism. However, it cannot be directly measured in the processing process, and it is measured when the small surface is coated with silver film, which results in low processing rate. By analyzing the principles of the first optical parallelism and the second optical parallelism, this paper provides a new processing and detection method for isosceles prism. The good verticality between the three working face for isosceles prism and a side face can ensure the second optical parallelism. The small difference of 67.5°can ensure the first optical parallelism. By changing the position of the incident light when testing, the number of reflections can be reduced from seven to three. The reflection principle deduces the formula: θII(7)=2.4θII(3),which to improve the machining accuracy and avoid the surface imperfections in detection. By using this process, precision and productivity can be effectively improved, the complexity of the process is reduced, and the qualification of isosceles prism has been improved.
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