China supplier Circular Optical Prism Overhead Projector Fresnel Lens
Name | Glass lens and cover and shade |
Material | Borosilicate glass or Soda lime glass |
Diameter Tolerance | +0/-0.5 mm |
Thickness Tolerance | +/-0.2 mm |
Processed | By Molding |
Working temperature | Resisting high temperature shock |
Surface Quality | Clear and smooth |
Transmission | 90-92% for visible light |
Tempering | Available |
Usage | Opticl system, Lighting system,Electronic apparatus,e.g Lamp cover, Lamp shade, Glass cover, Glass Shade, Light shade, Light cover, Glass lens, LED lens, Reflector lens, Sight lens, Front lens |