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Help CenterOptical Glass Concave-convex Lens With Anti-reflective Coating
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Optical glass concave-convex lens with Anti-reflective coating
Meniscus Lenses
- Meniscus lenses have one concave surface and one convex surface.
- Creates a smaller beam diameter, reducing the spherical aberration and beam waste when precision cutting or marking.
- Provides a smaller spot size with increased power density at the work piece.
Positive lenses are lenses which are thicker at the center than at the edge.The combined effect of refraction at the front and back surface of the lens will bend light to a point or focus-the light from this type of lens is focused to a point in front of the lens.
Positive lenses produce a real image,the image produced by this types of lens can be projected onto a screen
Changchun Ruiqi manufactures Positive lenses and Negative lenses from S1-UV Grade Fused Silica, G1 Fused Quartz, Commercial Grade,Sapphire,CaF2,MgF2 and BK7 Optical Glass. Every optic is pitch polished, providing good surface quality and an exceptional low-cost imaging performance with a variety of light sources.For information on our optic lens custom work, contact Ruiqi today
Positive and Negative Meniscus Lenses(BK7 or Fused Quartz)
Technical Specifications:
| Material | BK7,Fused Silica,Sapphire,CaF2,BaF2,MgF2,Silicon,Znse,Ge as customer request |
| Dimension | 5-300mm circular or square |
| Dimension Tolerance | +/-0.15mm, +/-0.2mm, +0/-0.1mm as request |
| Centration | <3' |
| Surface Quality | 10/5,20/10,60/40,40/20,80/50 |
| Flatness | lambda/4 per 25nm at 632.8nm |
| Focal length | +/-3% |
| Edge | Fine ground and beveled |
| Coating | Anti-Reflective (AR) Coatings,Single layer MgF2 coating,Multilayer Broadband AR Coating |
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