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Jiaxing AOSITE Photonics Technology Co.,Ltd.
spherical lens
spherical lens

Spherical Lenses

Spherical lenses are utilized for beam focusing and collimation. Our precision lenses begin with optical materials designed to achieve high transmittance across the desired spectral range. Great care is taken in crafting lens shapes with exceptional surface accuracy and quality. Spherical lenses can be categorized as plano-concave, plano-convex, double concave, double convex, meniscus, achromatic (doublet), rod, ball and core lenses based on their unique characteristics.

Basics about Spherical Lenses


LENSE TYPE

MATERIALS

ILLUSTRATION

PROPERTIES AND APPLICATIONS

Plano-Convex Lens

BK7/ Fused Silica/ Sapphire CaF2/other optical glass

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Positive focus length. Most suitable where one conjugate is more than five times the other, e.g. in sensor applications or for use with near-collimated light. Also where both conjugates are on the same side of the lens, e.g. as an add-on lens to increase the numerical aperture.

Double-Convex Lens

BK7/ Fused Silica/ Sapphire CaF2/other optical glass

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Most suitable where the conjugates are on opposite sides of the lenses and the ratio of the distances is less than 5:1, e.g. as simple image relay components.

Plano-Concave Lens

BK7/ Fused Silica/ Sapphire CaF2/other optical glass

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A negative lens with the form most suitable where one conjugate is more than five times the other, e.g. producing divergent light from a collimated input beam.

Double-Concave Lens

BK7/ Fused Silica/ Sapphire CaF2/other optical glass

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A negative lens with the form most suitable to producing divergent light or a virtual image, where the input light is converging.

Positive Meniscus Lens

BK7/ Fused Silica/ Sapphire CaF2/other optical glass

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These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations.

Negative Meniscus Lens

BK7/ Fused Silica/ Sapphire CaF2/other optical glass

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These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations.

Mount For Lenses

Black Anodized Aluminum

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Used to fix the position of lenses.


Specification of Spherical Lenses



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



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Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
sales@ostphotonics.com; info@ostphotonics.com +86-0571-86780460