NEWS CENTER

Home page

2023

Precision hot pressing process for optical glass lenses

The precision hot pressing process for optical glass lenses is an emerging technology for producing precision optical glass components. The physical properties of glass materials can change during the hot pressing process, which can have a certain impact on the optical performance of hot pressed lenses. The company adopts the method of combining experiment and simulation research to conduct in-depth research on the change rule of refractive index and density of lens in the process of precision Thermoforming, the generation mechanism and the impact on the optical system caused by the precision thermoforming process of lens. * * * also explored the correction method of refractive index deviation of precision Thermoforming lens.

In order to explore the distribution law of the internal refractive index field of the precision heat treatment lens, the company carried out precision heat treatment experiments under various conditions in the precision Thermoforming furnace, and obtained a batch of glass samples under different heat treatment conditions. We have studied and implemented a non-destructive measurement method for the refractive index field of glass lenses, and introduced the basic principle of Computed Tomography (CT) technology to obtain the distribution information of the three-dimensional refractive index field of the lens.

In the research, an optical measurement system based on Mach Zehnder interferometer was built, and a series of interference images of various precision heat treated lens samples were obtained under different wavelength laser measurement. The image processing system was developed and the phase information of the waves carried in each interference image was extracted*** According to the Filtered Back Projection (FBP) algorithm, the refractive index field of the glass lens was reconstructed layer by layer, and the 3D refractive index distribution of the lens was finally obtained. This new method of high-precision and non-destructive exploration of lens refractive index distribution achieves a reconstruction accuracy of 5.5 for the lens refractive index field × 10-5.

SAF Coolest v1.2 设置面板QRISX-ZZYU-GFZSE-ZSZ

修改浏览器滑块样式： 4px,4px,#f00

营业执照及SEO链接： Business license

无数据提示

Sorry, there is currently no content in the current column!

You can view other columns or return to Home