Optical glass and optical element

Abstract

The invention discloses optical glass and an optical element, wherein the optical glass comprises the following components: 40-60wt% of Nb2O5, 16-40wt% of P2O5, 8-25wt% of TiO2 and 0.5-10wt% of BaO; and the optical glass does not contain a clarifier. Experimental results indicate that the optical glass provided by the invention does not need to be added with the clarifier or a non-environment-friendly substance Sb2O3, and when the refractive index of the optical glass is 1.91-1.98, the Abbe number is 14-20, and the transmittance is 70 percent, the corresponding wavelength is smaller than 470nm, and the requirement on modern imaging equipment is satisfied.

Description

technical field [0001] The invention relates to the technical field of glass, and more specifically relates to an optical glass and an optical element. Background technique [0002] In recent years, with the increasing popularity of digital cameras, digital video cameras, camera phones, etc., the demand for optical glass as components thereof continues to expand. Moreover, with the rapid development of the integration and high functionality of optical system machines, the requirements for high precision, light weight and miniaturization of optical systems are becoming more and more intense. Therefore, more and more requirements are put forward for the performance of optical glass. high demands. [0003] The existence of defects such as residual bubbles and foreign matter in the optical glass brings great harm to the optical glass, especially the optical glass used in the imaging optical system of the image sensor, which seriously affects the use of the optical glass, so tha...

AI Technical Summary

Problems solved by technology

Sb in the optical glass 2 o 3 As a clarifying agent, it will cause adverse effects on the environment

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