|Diameter Tolerance||+0.0, -0.15mm|
|Centration||<3 arc minutes|
|Surface Figure||λ/[email protected]|
|Surface Quality||60-40 SD|
|Design wavelength||632.8 nm|
|AR coatings||BBAR coated. Please refer to the Coatings Section for details|
Properties and Spherical Aberration of Standard Spherical Lenses
Aspherical lens is produced by exactly cutting away some part of a spherical surface. A standard spherical lens has the undesirable property (called spherical aberration) of causing a stronger diffraction of light rays the further it is from the optical axis of the lens. The spherical aberration causes a loss of image sharpness.
Properties of Aspherical Lenses
Properly designed aspherical lenses fully compensate spherical aberrations. Aspherical lenses are effective in the elimination of not only spherical aberration, but also other forms of aberration generated by lenses. Aspherical lenses are also used to compensate for distortion aberration.
|Altechna metrology lab applies following product inspection:|
|Visual inspection – surface quality evaluation according to MIL 13830 and ISO 10110 standards|
|Dimensions – measurement of geometrical dimensions, as diameter, thickness, etc.|
|Radius of Curvature (Spherometer)*|
|Effective Focal Length (Spherometer)|
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|Diameter, mm||Effective Focal length, mm||NA||Optimal Wavelength range, nm||Product ID||Price||Action|
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