Excellent quality Plano-Concave Spherical Lens - Precision Polished Aspheric Lenses – DG
Excellent quality Plano-Concave Spherical Lens - Precision Polished Aspheric Lenses – DG Detail:
Small aspheric glass lenses can be made by molding, which allows cheap mass production. Due to their low cost and good performance, molded aspheres are commonly used in inexpensive consumer cameras, camera phones, and CD players.They are also commonly used for laser diode collimation, and for coupling light into and out of optical fibers.
Larger aspheres are made by grinding and polishing. Lenses produced by these techniques are used in telescopes, projection TVs, missile guidance systems, and scientific research instruments. They can be made by point-contact contouring to roughly the right form which is then polished to its final shape. In other designs, such as the Schmidt systems, the aspheric corrector plate can be made by using a vacuum to distort an optically parallel plate into a curve which is then polished “flat” on one side. Aspheric surfaces can also be made by polishing with a small tool with a compliant surface that conforms to the optic, although precise control of the surface form and quality is difficult, and the results may change as the tool wears.
Product Parameters
| Place of Origin: | Jiangsu,China, 2 hours by car from Shanghai |
| Brand Name: | DG Optics |
| Material | BK7 ,Fused silica, Sapphire ,CaF2, ZnSe, Si, Ge |
| Coating | UV, IR , SWIR, NIR ,VIS |
| Structure: | ASPHERICAL |
| Surface Quality: | 40/20, 20/10, 5/0 |
| Diameter | 0.5-600mm |
| Clear Aperture | Over 90% |
| Chamfer | 0.1-0.3 mm*45 degree |
| Focal Length Tolerance | +/-1% |
| Irregularity (P-V) @ 632.8nm: | λ/4 |
Coating as your quired
Production process
Optical design centre
Applications
Other lens types :
Product detail pictures:
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Sticking for the belief of "Creating items of top of the range and creating buddies with people today from all over the world", we normally put the interest of shoppers in the first place for Excellent quality Plano-Concave Spherical Lens - Precision Polished Aspheric Lenses – DG , The product will supply to all over the world, such as: Russia, venezuela, Pretoria, In the future, we promise to keep offer the high quality and more cost-effective products, the more efficient after sales service to our all customers all over the world for the common development and the higher benefit.
By Deborah from San Francisco - 2017.10.25 15:53
The enterprise has a strong capital and competitive power, product is sufficient, reliable, so we have no worries on cooperating with them.
By Helen from Sao Paulo - 2018.07.12 12:19
