The glass lens of a courtyard robot is the core component of its "eyes," typically installed on the outermost layer of LiDAR, cameras, or vision modules, serving multiple protective functions such as light transmission, dust resistance, scratch resistance, and waterproofing. Below is a systematic introduction from four dimensions: material, function, craftsmanship, and reliability:

1. Material Selection
   ? High borosilicate optical glass: Light transmittance >92%, low thermal expansion coefficient, no cracking from -40°C to +85°C, and has passed a 50g vibration impact test.
   ? Aspheric design: Some high-end models use aspheric glass lenses to further correct aberrations, reduce module thickness, and improve edge imaging quality.

2. Functional Role
   ? Light transmission window: Ensures efficient penetration of laser/visible light, guaranteeing navigation positioning and visual recognition accuracy.
   ? Physical protection: Glass hardness >7 H, far higher than plastic, making it resistant to scratches from gravel roads.
   ? Environmental isolation: Together with the entire unit, it achieves IP67/IP6K9K protection, capable of withstanding heavy rain, sandstorms, and high-pressure water jet cleaning.

3. Screen Printing and Optical Craftsmanship
   ? The lens surface can be screen printed with logos, functional icons, or black masking rings for an integrated appearance; the ink uses weather-resistant UV curing, ensuring no fading for 8 years outdoors.
   ? Double-sided multi-layer AR (anti-reflective) coating: Reduces single-sided reflectivity from 4% to below 0.5%, resulting in clearer imaging in nighttime or backlit environments.

4. Reliability Verification
   ? Passed 60+ rigorous tests: Including thermal shock, salt spray, UV aging, ball drop impact, sand and dust tests, ensuring an 8-year outdoor service life.