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        Model:66-6
        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: 66mm, Height: 33.68mm, Steps: 4mm
        6. Light angle: 60°
        Model:66-8
        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: 52.9mm, Height: 26.9mm, Steps: 4mm
        6. Light angle: 90 °
        Model:66-11
        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: 57mm, Height: 21mm, Steps: 4mm
        6. Light angle: 120°
        Model:67-42
        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: 66.6mm, Height: 26.76mm, Steps: 3mm
        6. Light angle: 70°
        Model:68-1
        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: 67.9mm, Height: 12.3mm, Steps: 3.5mm
        6. Light angle: 110°
        Model:68-3
        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: External diameter: 67.9mm, Height: 22.56mm, Steps: 3.5mm
        6.Light angle:100°
        Model:78-3
        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: External diameter: 77.6mm, Internal: 71.4mm, Height: 35.46mm, Steps: 4mm
        6. Light angle: 90°
        Model:78-4
        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: 78mm, Internal: 72mm, Height: 34mm, Steps: 4mm
        6. Light angle: 90°
        Model:78-22
        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: 78mm, Internal: 72mm, Height: 26.13mm, Steps: 4mm
        6. Light angle: 100°
        Model:78-23
        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: 78mm, Internal: 72mm, Height: 26.13mm, Steps: 4mm
        6. Light angle: 120°
        Model:78-24
        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: 78mm, Internal: 72mm, Height: 40mm, Steps: 4mm
        6. Light angle: 60°
        Model:78-43
        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: 78mm, Height: 27.6mm, Steps: 4mm
        6. Light angle: 120°
        Model:78-45
        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: 78mm, Height: 27.6mm, Steps: 4mm
        6. Light angle: 120°
        Model:94-8
        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: 94mm, Height: 40.4mm, Steps: 5.4mm
        6. Light angle: 80°
        Model:100-4
        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: 100mm, Internal: 94mm, Height: 35mm, Steps: 5mm
        6. Light angle: 90°
        Model:100-5
        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: 100mm, Internal: 82mm, Height: 37.81mm, Steps: 5mm
        6. Light angle:80°
        Model:100-7
        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 diameter: 100mm, Internal: 87.18mm, Height: 36mm, Steps: 5mm
        6. Light angle: 120°
        Model:100-20
        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: 100mm, Height: 30mm, Steps: 4mm
        6. Light angle: 120°
        Model:109-2
        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: 109mm, Height: 28mm, Steps: 4mm
        6. Light angle: 90°
        Model:114-4
        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: 114mm, Height: 36.2mm, Steps: 5mm
        6. Light angle: 120°
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