Optical BK7 Glass Plano-Convex Cylindrical Lens
|Production Capacity:||8, 000 pcs/month|
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China Star Optics could manufacture plano-convex cylinderical lens, plano-concave cylinderical lens, bi-convex cylinderical lens, bi-concave cylinderical lens, meniscus cylinderical lens, long cylinderical lens, Special cylinderical lens etc.
Cylindrical lens is used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching a point of light into a line...They are available in either plano concave or plano convex configurations. Plano-Concave Cylindrical lenses have a negative focal length and are used for image reduction or to spread light. Plano-Convex Cylindrical lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications.
The demision of cylindrical lens as follow:
Material: BK7 or other optical materials
Dimension Tolerance: +0.0~-0.1mm
Center Thickness: +/-0.1mm
Focal Length Tolerance:+/-1%
Surface Quality: 20/10
Surface Figure: λ/2 at 633nm on plano side
Clear Aperture >90%
Chamfer: 0.25mm at 45 degree typical