Spherical lens, Plano Concave Lens, Plano convex lens
Plano Concave Lenses have a negative focal length and they cause parallel rays to diverge when exiting the lens. They are used to expand light beams or to increase focal lengths in optical systems or other applications.
Plano-Convex Spherical Lens is used as a simple imaging lens to focus, collect and collimate light. These lenses have positive Effective Focal Lengths.
Technical Specifications:
| Material | BK7,Fused Silica Optical Glass as customer request |
| Dimension | 15mm 30mm 40mm 50mm 100mm 200mm 300mm circular |
| Dimension Tolerance | +/-0.15mm, +/-0.2mm, +0/-0.1mm as request |
| Centration | <3' |
| Surface Quality | 60/40 |
| 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 |
BK7 Plano concave lens
Fused Silica Plano Concave lens