1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
2. Light transmission: 95% (97% after coating)
3. Refractive index: 1.474
4. Operating temperature: -50-500 degrees
5. Size introduction: External diameter: 55.6mm, Internal: 50.5mm, Height: 18.2mm, Steps: 3mm
6. Light angle：110*60

1. Material: Optical glass (high borosilicate, K9, BK7, BK270) 2. Light transmission: 95% (97% after coating) 3. Refractive index: 1.474
4. Operating temperature: -50-500 degrees
5. Size introduction: Length: 72mm, Width:39mm, Height: 26mm, Steps: 4mm
6. Light angle: 110 x 60 7. Suitable range: outdoor lighting, high bay lights, tunnel lights, etc.