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Glass Achromatic Optical Lens

03 Nov 2021

Achromatic Lens is an achromatic consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. The elements are chosen so as to cancel chromatic aberration at two well-separated wavelengths, usually in the blue and red region of the spectrum. Focal length is constant at those two wavelengths and focal length shifts are virtually eliminated across the visible wavelengths. One frequent use is to achieve diffraction limited focusing of a laser beam. Negative Achromats are typically used when there is a need to eliminate chromatic aberration. In addition to reducing chromatic aberration at the design wavelengths, spherical aberration and coma are greatly reduced.China Star Optics can provide Positive Achromatic Lens and Negative Achromatic Lens by two piece single lens (Doublet) or three piece single lens (Triplet).

Optical window materials comparison:
Material optical glass
Dimension 2-200mm
Dimension Tolerance +0.1, -0.1 mm
Thickness Tolerance +0.1, -0.1 mm
Centration 3 arc minutes
Surface Flatness 1/4 L  @632.8nm
Surface Quality 60-40 scratch and dig
Protective Bevel 0.25 mm x 45°
Coating as customer's requirements

CONTACT DETAILS
Changchun Yutai Optics Co., Ltd.
NO.1688
changshen road
qiche zone
Changchun
Jilin
130000
China
Tel: 86-431-87911611
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