Double Concave Lens

DOUBLE CONCAVE LENS

Product introduction

A biconcave spherical lens consists of two concave spherical surfaces with a negative focal length. It is typically used for reducing image size and diverging beams. It is widely used in display systems, projection systems, laser measurement, optical imaging, and beam control.

Design Index

Specifications
Material	BK7
Design Wavelength	546.1nm
Design Index	1.5183+/-0.0005
Diameter Tolerance	+0.0，-0.15mm
Paraxial Focal Length Tolerance	+/-2%
Centration	3 arc minute
Clear Aperture	>85%
Surface Figure	λ/4@632.8nm
Surface Quality	60/40
Bevel	0.25mm*45°
Coating	Uncoated

Part No	φ(mm)	f (mm)	R1 (mm)	tc(mm)	te(mm)	fb(mm)
DCV1201	12.7	-25	26.25	2	3.6	-25.7
DCV1202	12.7	-30	31.44	2	3.3	-30.7
DCV1203	12.7	-40	41.8	2	3	-40.7
DCV1204	12.7	-50	52.17	2	2.8	-50.7
DCV1301	25	-25	26.25	2	8.6	-25.7
DCV1302	25.4	-35	36.62	2	6.5	-35.7
DCV1303	25.4	-50	52.17	2	5.1	-50.7
DCV1305	25.4	-75	78.09	2	4.1	-75.7
DCV1306	25.4	-100	104	2	3.6	-100.7

Specifications
Material	BK7
Design Wavelength	546.1nm
Design Index	1.5183+/-0.0005
Diameter Tolerance	+0.0，-0.15mm
Paraxial Focal Length Tolerance	+/-2%
Centration	3 arc minute
Clear Aperture	>85%
Surface Figure	λ/4@632.8nm
Surface Quality	60/40
Bevel	0.25mm*45°
Coating	Uncoated