Model：64-5
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: 64mm, Internal: 46.1mm, Height: 21mm, Steps: 3mm
6. Light angle: 125 x 70 polar street light lens
2. Light transmission: 95% (97% after coating)
3. Refractive index: 1.474
4. Operating temperature: -50-500 degrees
5. Size introduction: External diameter: 64mm, Internal: 46.1mm, Height: 21mm, Steps: 3mm
6. Light angle: 125 x 70 polar street light lens
Model：65-3
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: Externa: 64mm, Internal: 55.27mm, Height: 20.43mm, Steps: 3mm
6. Light angle：100*60
2. Light transmission: 95% (97% after coating)
3. Refractive index: 1.474
4. Operating temperature: -50-500 degrees
5. Size introduction: Externa: 64mm, Internal: 55.27mm, Height: 20.43mm, Steps: 3mm
6. Light angle：100*60
Model：66-7
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: 66mm, Internal: 61.65mm, Height: 24.4mm, Steps: 3.5mm
6. Light angle：130*85
2. Light transmission: 95% (97% after coating)
3. Refractive index: 1.474
4. Operating temperature: -50-500 degrees
5. Size introduction: External: 66mm, Internal: 61.65mm, Height: 24.4mm, Steps: 3.5mm
6. Light angle：130*85
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