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Double Concave Lenses

Optola offers wide range of double concave lenses.

Custom design double concave lenses are available upon request.

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Material	BK7 or UV fused silica
Focal Length Tolerance	±1% @589nm
Design Wavelength	589nm
Centration	≤3′
Diameter Tolerance	+0/-0.1mm
Clear Aperture	＞central 90% of diameter
Center Thickness Tolerance	±0.1mm
Center Thickness	2.5mm，nominal
Surface Quality	20/10（UVFS）/ 40/20（BK7）
Surface Accuracy	≤ 1.5λ power，λ/2 irregularity（UVFS） ≤ 1.5λ power，λ/4 irregularity（BK7）
Chamfers	0-0.8mm face width×45°±15°