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optical glass convex lens diameter 15mm focal length 11.81mm sample K9 mini magnifier
Specifications:
- Usage: Optical
- Structure: Double Convex
- Shape: Meniscus
- Model Number: D15F11.81++
- Material: H-K9L
- Material: Glass
- Focal Length: 11.81
- Edge Thick: 1.87
- Diameter: 15
- coating or not: 400-700
- Center Thick: 6.6
- Free shipping
- 100 days returns
- Low prices
- 5 million products