High-transmittance low-aberration negative lens

Abstract

The utility model discloses a kind of high transmittance low aberration negative lens, belong to optical lens technical field, it aims at solving the problem of existing negative lens transmittance low, aberration big, influence optical instrument imaging quality, the negative lens includes lens base body, first anti-reflection coating, second anti-reflection coating, light-shielding frame and mounting fixed hole, lens base body is made of specific material, both sides concave outer surface is respectively plated with different anti-reflection coating, light-shielding frame is sleeved in lens base body outer circumferential side, mounting fixed hole is distributed on light-shielding frame, by the synergistic effect of anti-reflection coating, it can significantly improve lens transmittance;The quality of lens base body and the stray light blocking effect of structure design combined light-shielding frame can effectively reduce aberration, overall structure design is reasonable, relatively simple manufacturing process, cost is lower, and it is convenient to install and fix, with stronger practicality and popularization value, can satisfy the use demand of high-precision optical instrument.

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