Products

Meniscus Lens

ID：FKS-L005

Products Description：

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Details:

From prototype to production, Focus Technology designs, manufactures, and coats spherical lenses. Spherical lenses are one of the most basic optical components to produce. With complete in-house capabilities, Focus is able to offer spherical lenses at the lowest pricing with fast delivery times.

Positive meniscus lens is a convex-concave lens thicker at the center than at the edges, which frequently used for beam focusing applications.

Negative meniscus lens is a convex-concave lens thinner at the center than edges, which frequently used for beam expanding applications.

Technical Parameters:

 

GENERAL

HIGH PRECISION

Material

N-BK7, CDGM H-K9L, Fused silica, CaF2, Sapphire

Design wavelength

546.07nm

Design index (bk7)

1.51680 for BK7, 1.45846 for Fused Silica

Diameter tolerance

+0.0, 0.15mm

+0.0, 0.05mm

Paraxial focal length

±2%

±0.5%

Centration

<3'

<1'

Clear aperture

80%

90%

Surface quality

60-40 scratch and dig

10-5 scratch and dig

Surface irregularity

< λ/4

< λ/8

Protective bevel

0.25 + 0.25, -0.0mm

0.2 ± 0.1mm


Note for Lens:

(1). Lens made from materials such as N-BK7, Fused Silica, Sapphire, CaF2, Borofloat, or other optical glass supplied by Schott and Chinese CDGM are available upon request.
(2). Custom-made Lens at any size from Φ3.0mm to Φ200mm clear aperture are available. Besides round, Lens at shape of square are available.
(3). 90% clear aperture is available upon request.
(4). Better bevel is available upon request.


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