Aspheric Lenses

The curvature radius of an aspherical lens continuously changes from the center to the edge with the change of the main optical axis

Classification:

Precision Optics

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Detailed introduction

The curvature radius of an aspherical lens continuously changes from the center to the edge with the change of the main optical axis,which can better correct spherical and chromatic aberration,thereby improving the quality of the lens spot.The lens is optimized to reduce the aberration to a large extent by adjusting the constant of the cone and aspherical coefficient.

The aspheric lenses due to the single-element design help greatly reduce the number of lenses in the optical system,as well as allowing optical component designers to use fewer optical components than traditional spherical components to correct image aberrations.The aspheric lenses are widely used in fields such as barcode scanning,laser collimation,and optical imaging.

Specification
Dimension Tolerance	+0/-0.05mm
Center Thickness Tolerance	±0.1mm
Centration	＜1′
Wavelength	405nm/587.6nm/4μm/10.6μm etc
Chamfer	0.1mmX45°
Flatness Deviation	RMS 0.25μm
Coating	Dielectric Coating
Material	K9、BK7、H-ZF2、H-ZF7LA、Fused Silica、ZnSe etc
Surface Quality	40/20(MIL-PRF-13830B)

Dimension (mm)	Effective Focal Length（mm）	Back Focal Length （mm）	Numerical Aperture	Collimator Lens Light Aperture （mm）	Focus End Lens Light Aperture （mm）	Material	Coating
12.5	10	4.9	0.65	11.43	8.4	Fused Silica	AR@250-400nm
25.0	20	9.9	0.65	22.86	17.4	Fused Silica	AR@250-400nm
50.0	40	19.7	0.65	45.72	35.1	Fused Silica	AR@250-400nm

Dimension (mm)	Effective Focal Length（mm）	Back Focal Length （mm）	Numerical Aperture	Center Thickness（mm）	Edge Thickness（mm）	Materials	Coating
10.0	7.5	4.51	0.67	5.0	2.21	H-ZF2	AR@400-700nm/AR@650-1050nm/AR@1000-1650nm
12.5	9.5	6.51	0.66	5.0	1.60	H-ZF2	AR@400-700nm/AR@650-1050nm/AR@1000-1650nm
15.0	9.0	4.81	0.83	7.0	1.35	H-ZF2	AR@400-700nm/AR@650-1050nm/AR@1000-1650nm
40.0	30.0	20.60	0.66	15.5	2.56	H-ZF2	AR@400-700nm/AR@650-1050nm/AR@1000-1650nm
50.0	50.0	38.34	0.50	19.4	8.00	H-ZF2	AR@400-700nm/AR@650-1050nm/AR@1000-1650nm