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Sunny Precision Optics Inc. |
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Sunny Precision Optics Inc. |
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Aspherical Lenses
Material: Bk7,Fused Silica, Silicon, Germanium
Technically, an aspherical lens is a lens whose curved surface does not conform to the shape of a sphere; an aspherical lens is used in correcting distortion in ultra-wideangle lenses or coma in large-aperture lenses brought about by spherical aberration. A aspherical lens element or two can substitute a bigger number of spherical lens elements to achieve similar or better optical results and to reduce the overall cost of production and more compact of the size of a lens - especially in the case of zoom lenses, where lens elements of more than 10 are common.
On-axis paraboliod, hyperboloidal, ellipsoidal mirrors
Convex, concave aspheric surfaces, on and off-axis
Single and multiple element refractive systems
Flat or curved unusual surface shape
(i) Parabolic-Cylindrical Lenses (ii) Plano-Parabolic Lenses (iii)Bi-Parabolic Lenses
Custom design and design help.
Specifications
Surfaces of the second order: include paraboloid, hyperboloid, ellipsoid.
Surfaces rotation of the second and higher orders.
| Material | Bk7,Fused Silica, Silicon, Germanium |
| Dimension | 4 mm - 300 mm |
| Dimension Tolerance | 0.0/-0.15 mm |
| Surface Quality | 40/20 scratch & dig |
| Relative aperature | 1:0.5~1:10 |
| Centration | 1 arc min |
| Clear Aperture | >90% of the dimension |
| Coating | Upon request |
Product
Custom aspherical lens in different dimension and material is upon customer's requirement..
