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Product Catalog 2017

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GRIN Lenses

GRIN Lenses
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Material Oxide Glass
Diameter tolerance +0.005/-0.010mm
Effective diameter >70 %
Thickness tolerance ± 2.5 %
Angled surface tolerance ±2.5°
Working distance tolerance ± 0.01 mm
Surface quality 20-10 S-D
Surface figure <λ/4 @ 632.8 nm
Centration error <3 arcmin
Protective chamfers <0.25 mm x 45°
Transmittance > 89 % @ 380 nm - 2000 nm (uncoated)
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Attention! You can customise this product to your needs.
Gradient Index (GRIN) lenses have a radially varying index of refraction and that causes an optical ray to follow a sinusoidal propagation path through the lens. Carefully designing the lenses for specific working distances GRIN lenses are easy to handle and integrate into optical systems. Typical applications include coupling the output of diode lasers into fibers, focusing laser light onto a detector, or collimating laser light.

Altechna offers 0.25 and 0.23 pitch GRIN lenses. 0.25 pitch lenses have 0 mm working distance and are best suited for beam colimation of optical fibers or laser diodes. Where the lenses can't be directly contacted best option would be 0.23 pitch GRIN lenses, they have small working distance and are mainly used for focusing purpose. To reduce back reflections Altechna offers lenses with one 8° wedged face and broad band antireflection coating. 

If required GRIN lens is not in the list of standard items, please submit request form for the lens you need.
varna Ideal for beam collimation or focusing
varna Laser to fiber coupling
varna Fiber to fiber coupling
varna Fiber to detector coupling
varna Angled end surface reduces back reflections
varna BBAR coating
varna Custom GRIN lenses by request

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You can customise this product to your needs. If you do not find suitable specifications for your application please contact us for custom solution.

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Choose from 7 GRIN Lenses