Cylindraical Lenses
Description:
Cylindrical lenses are used to correct astigmatism in the eye and in rangefinders, to produce astigmatism, tretching a point of light into a line, they are widely used in bar code scanning, projection optics systems, laser measurement systems and holography.
Core Optronics Supplies:
Cylindrical plano-concave lenses;
Cylindrical plano-convex lenses.
Specifications:
| Material | N-BK7, H-K9, Fused Silica, N-SF10, etc |
| Diameter Tolerance (mm) | ±0.2 (General), ±0.05 (High Precision) |
| Focal Length Tolerance (mm) | ±2% |
| Centration | <3 arc min |
| Surface Figure X (per 25mm @ 633nm) | λ/2 (General), λ/4 (High Precision) |
| Surface Figure X (per 25mm @ 633nm) | 2λ (General), λ (High Precision) |
| Surface Quality: scratches and dig | 60/40 (General), 10/5 (High Precision) |
| Bevel (face width x 45°) | <0.2-0.5mm (General), 0.05-0.2 (High Precision) |
| Coating | upon customer’s request |