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Cylindraical Lenses

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.

 Cylindrical lenses are available in either plano-concave or plano-convex configurations from Core Optronics, Plano-concave lenses have a negative focal length and are used for image reduction or to spread light Plano-convex lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications. 

Attribute

Specification

Typical Material

On request, for example 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@632.8nm)

λ/2 (General), λ/4 (High Precision)

Surface Figure X (per 25mm@632.8nm)

2λ (General),  λ (High Precision)

Surface Quality

60/40 (General), 10/5 (High Precision)

Bevel (face width x 450)

<0.2-0.5mm (General), 0.05-0.2 (High Precision)

Coating

unpon request