Wuhan Siwer Optics Co.,Ltd
| Payment Terms | T/T, Western Union |
| Supply Ability | 2000 pieces/month |
| Delivery Time | 4-6 weeks |
| Packaging Details | 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler |
| Material | BK7 ZF2 or ZF5 |
| Size tolerance | +/-0.1mm |
| Chamfer | 0.2-0.5mm |
| Surface quality | 40/20 |
| Surface flatness | Lambda/4 in 25.4mm |
| Centration | 3 arc min |
| Standard coating | AR@400-700nm or customized |
| Size range | 3-220mm |
| Standard Diameter | 12.7,25.4,30mm |
| Brand Name | Wuhan Siwer Optics |
| Model Number | Achromatic lens |
| Place of Origin | Wuhan,China |
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Product Specification
| Payment Terms | T/T, Western Union | Supply Ability | 2000 pieces/month |
| Delivery Time | 4-6 weeks | Packaging Details | 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler |
| Material | BK7 ZF2 or ZF5 | Size tolerance | +/-0.1mm |
| Chamfer | 0.2-0.5mm | Surface quality | 40/20 |
| Surface flatness | Lambda/4 in 25.4mm | Centration | 3 arc min |
| Standard coating | AR@400-700nm or customized | Size range | 3-220mm |
| Standard Diameter | 12.7,25.4,30mm | Brand Name | Wuhan Siwer Optics |
| Model Number | Achromatic lens | Place of Origin | Wuhan,China |
| High Light | achromatic lens ，achromatic cylindrical lens | ||
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.
Optical AR Coatings
a) Uncoated,The surface reflectivity of uncoated visible lenses(Refractive index＝1.5) is about 4%.
Click on the link to see how to calculate reflectivity
b) AR/AR@400-700nm,Tavg>99.4%
c) AR/AR@450-650nm,Tavg>99.6%
d) AR/AR@400-1000nm,Tavg>98.5%
e) We can also customize high damage threshold antireflective coatings
| Material | Optical glass |
| AR Coating Range | 400-700nm or customized |
| Reflectance over AR Coating Range @ 0° AOI | Ravg<0.5% |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Focal Length Tolerance | ±2% |
| Surface Quality | 40/20 Scratch-Dig |
| Surface Flatness (Plano Side) | λ/2 at 633nm |
| Spherical Surface Powerc (Convex Side) | 1.5λ at 633nm |
| Surface Irregularity (Peak to Valley) | λ/2 at 633nm |
| Centration | <3 arcmin |
| Clear Aperture | >Ø10.16 mm (Ø1/2" Lenses) >Ø20.32 mm (Ø1" Lenses) |
| Design Wavelength | 546nm |
Lens Grinding
Lens High Speed Polishing
Optical Coating
Company Details
Business Type:
Manufacturer,Exporter,Seller
Ecer Certification：
Active Member
Company profile Wuhan Siwer Optics is a professional manufacturer of various optical components.We focuses on production of optical interference filters,infrared and visible optical components. The company has optical optimization design, precision optical processing and optical coating technolo... Company profile Wuhan Siwer Optics is a professional manufacturer of various optical components.We focuses on production of optical interference filters,infrared and visible optical components. The company has optical optimization design, precision optical processing and optical coating technolo...
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