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Plano-concave Lens

A plano-concave lens is made by machining a plane and a concave sphere.The plano-concave lens has a negative focal length and can diverge collimated beams.In this case.

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A plano-concave lens is made by machining a plane and a concave sphere.The plano-concave lens has a negative focal length and can diverge collimated beams.In this case, the surface of the lens should be oriented towards the light source to minimize spherical aberration.In addition, they compensate for the spherical aberration caused by other lenses in the optical system.


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Basic Technical Parameters

 

Tolerance of Dimension: ±0.05mm  

Surface Accuracy:  1/2λ,λ/4 per φ25.4mm

Centration:≥1′
Surface Quality:  60-40, 40-20, 20-10,10-5
Chamfer:  0.2-0.3mm×45°
Clear Aperture: >90%
Polish: High-precision Polish on Both Surfaces

 

Plano-concave lens is often used to expand beam, project and enlarge focal length of optical system


"Quality first, customer first, development and innovation"
Nanjing April Electro-Optics Ltd. founded in 2012, is specialized in high-precision cold processing of crystal materials, with sapphire, quartz and optical glass as raw materials. Core products including window, lens, crystal rod, prism, ball, filter, cylindrical mirror, ball cover, and so forth. 

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