Optical glass and optical element

Abstract

The invention discloses optical glass and an optical element. The optical glass comprises the following components: 55-66wt% of P2O5, 2-12wt% of Al2O3, 1-10wt% of K2O, 1-10wt% of BaO, 3-10wt% of MgO and 1-10wt% of B2O3. Experimental results show that the refractive index of the optical glass is 1.5-1.6, Abbe number is 67-72, and when the transmittance of the optical glass is 80%, the corresponding wavelength is less than 345nm and the transition temperature is lower than 520 DEG C, thereby lowering the cost in production.

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 integration of equipment used in optical systems has increased and the functions have increased rapidly, so optical systems are required to have higher accuracy, lighter weight and smaller size. size of. Therefore, aspheric mirrors are widely used, and the use of aspheric components has become the mainstream of optical design. [0003] The manufacture of aspheric lenses widely uses the method of precision molding. The so-called precision molding is to mold a glass preform with a high-precision mold with a predetermined product shape under a certain temperature and pressure, so as to obtain a glass product that has a final product shape or is very close to the final product shape a...

AI Technical Summary

Problems solved by technology

In the prior art, due to the high transition temperature (Tg) of the glass material, the temperature required for precision molding is high, and the molding die is easily damaged, resulting in high cost

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