A vehicle-mounted coated window pane for eye-safe lidar viewing
By depositing black filter film and antireflective film on optical glass substrate, the problems of complex structure and high cost of lidar window film in the prior art are solved, achieving high transmittance and eye safety protection, with stable film performance and long service life.
CN116840960BActive Publication Date: 2026-06-30FUZHOU OPTOWIDE TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUZHOU OPTOWIDE TECH CO LTD
- Filing Date
- 2023-07-07
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
Existing 1550nm lidar windows have complex structures, high costs, and poor optical performance, making it difficult to achieve high transmittance and eye safety protection.
Method used
A black filter film and an antireflection film are deposited on an optical glass substrate using vacuum coating technology. The filter film is composed of tantalum pentoxide, polycrystalline silicon and silicon dioxide, achieving high transmittance and low reflection in the 1535-1565nm wavelength band. An antireflection film is deposited on the other side to improve transparency.
Benefits of technology
A simple and low-cost lidar window has been developed, which features high transmittance, eye safety protection, stable film performance, and long service life.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116840960B_ABST
Abstract
This invention discloses an automotive-grade coated window for eye-safe lidar displays, comprising: an optical glass substrate, a filter film, and an anti-reflective film, wherein the filter film and the anti-reflective film are respectively coated on different sides of the optical glass substrate. This invention is safe and reliable, protects the human eye from harm, has stable film performance, low stress, fewer layers, and a longer service life.
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