Double-Concave Lenses

Model:	ccjx
Brand:	ccjx
Origin:	Made In China
Category:	Electronics & Electricity / Electronic Instrument / Optical Lens & Instrument
Label:	Double-Concave Lens , Concave Lens , spherical lenses
Price:	¥25 / pc
Min. Order:	1 pc

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Product Description

Double-concave lens is compose of two concave surface, has a negative focal length. Double-concave lens is best use when the input beam is converging, It is used in beam expanders,projection optics system,optical viewers and optical character readers etc.

Material	H-K9L，BK-7,Fused Silica，CaF2，MgF2，BaF2，Si，Ge etc.
Diameter (mm)	3-500
Diameter Tolerance (mm)	+0.0/-0.1
Clear Aperture	≥90%
EFL Tolerance	±1%
CT Tolerance (mm)	±0.1
Radius R1 (mm)	-1.46-50000mm
Design Wavelength (nm)	587.6
Centration Error	≤3"
Surface Flatness	λ/10@633nm
Surface Quality	10/5--80/50
Bevel	0.25×45°
Coating	As customer’s requirement.