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Optical prism on September 14, 2020

by:HENGXIANG     2020-11-16
Optical prism agglutination process is a processing method of optical components combination process ( Technology combined with other two are: machinery, light plastic) 。 Optical prism glue to improve the optical system is mainly to make optical components like quality, reducing energy loss and increase the imaging resolution, scale surface protection, further optimization of manufacturing processes to meet the design requirements. Optical prism glue is mainly using the optical industry standard with glue ( Colorless, transparent, can in the specified range of optical transmittance is greater than 90%) 。 In the surface of optical glass optical bonding. Widely used for military, aerospace and industrial adhesive in optical lens, prism, mirror and termination or fiber. Comply with the MIL - optical adhesive materials A - 3920 military standard. Optical prism for guarantee to glue for optical components of the optical properties and mechanical properties, bonding layer should be able to meet the following requirements: 1, transparency: colorless, no bubble, no hairs, dust particles, the watermark, oil mist and so on. 2, gluing pieces should have sufficient mechanical strength rubber wants firm, generating internal stress. 3, to the surface deformation should not, for the influence of temperature, humidity and organic solvents have enough stability. 4, ensure gluing prism parallel and waited for the thickness difference, guarantee the agglutination lens at the center of the error, can ensure the surface precision of glue. Roof prism ( 屋顶棱镜) Smaller and can make the objective and eyepiece is located in a line, so often used in extremely compact binocular lens. Compared with the prism, roof prism has two main disadvantages, one is the loss of the light, imaging darker; The second is for assembling accuracy is high, difficult to manufacture, the price is more expensive, excellent manufacture of roof prism can catch up with in terms of performance but not more than porro prism. Roof prism roof surface is the key to existence, the so-called roof surface is light path inside will have a roof shape by two reflective surfaces and reflective surface, on the surface of the two edges in the center of the light path, so some roof prism can see the middle line, it can also be understood as the beam is divided into two and a half to split up again. The two mirror to form a right Angle, forming a roof surface, and see for yourself and ordinary mirror around the watch? One of the most commonly used don't han prism principle to reflect six times. Accordingly, still have a kind of commonly used modern Zeiss binoculars abbe prism, is also a kind of roof prism, the length is slightly larger, but as long as four reflections, and there's no need to glance plating layer, so the efficiency is higher than don't han prism and similar to ordinary Paul prism.
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