Optical glass, optical prefabricated member, optical element and optical instrument

A technology of optical glass and optical components, applied in optical components, instruments, optics, etc., can solve the problems of large optical coefficient, glass is prone to stress, reduce imaging quality, etc., achieve low temperature coefficient of refractive index, improve chemical resistance and stability , the effect of clear image quality
CN110526575AInactive Publication Date: 2019-12-03CDGM OPTICAL GLASS
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CDGM OPTICAL GLASS
Publication Date
2019-12-03
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses optical glass. The optical glass comprises 20-44% of SiO2, 6-15% of B2O3, 0-9% of TiO2, 1-10% of ZnO, 45-60% of RO, 0-9% of Al2O3 and 0-3% of Sb2O3, wherein RO is one or more selected from MgO, CaO, SrO and BaO. The invention provides the environment-friendly optical glass with a small stress optical coefficient and a low refractive index temperature coefficient, an opticalprefabricated member, an optical element and an optical instrument.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to an optical glass, in particular, the present invention relates to an optical glass and an optical preform, an optical element and an optical instrument made of the optical glass. Background technique

[0002] The stress optical coefficient is also called the photoelastic coefficient. The smaller the value is, the easier it is to eliminate the temporary stress of the glass, which is more conducive to imaging. At present, most optical glass has a large stress optical coefficient, the thermal stability of the glass is not good under strong light, the temperature rises rapidly, and stress is easily generated inside the glass, thereby reducing the image quality of the image, or even no image.

[0003] Moreover, in recent years, a large number of optical glasses used in automotive, security and other fields have been exposed outdoors for a long time. At present, the temperature coefficient of refractive index and stress optic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More