| Customization: | Available |
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| Usage: | Medical, Optical, Photography |
| Type: | Convex Lens |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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The Double Concave Lenses are made from BK7 material, which are manufactured with both surfaces concave. These lenses have negative focal lengths. These lenses diverge collimated incident light and form virtual images, which are seen through the lens. They are often used to expand light or increase focal lengths in existing systems. They are used in laser beam expanders, optical character readers, viewers, and projection systems. We will provide precision grade Double Concave Lenses with tighter manufacturing tolerances.
Technical parameters
| 1 | Material | BK7 or Fused silica |
| 2 | Diameter | 2-300+/-0.15mm |
| 3 | surface flatness | lambda/2,lambda/4 |
| 4 | dimension tolerance | +/-0.2mm |
| 5 | focal length tolerance | +/-2% |
| 6 | centration | 3arc min |
| 7 | surface qualtiy | 60-40 scratch and dig |
| 8 | bevel | 0.2-0.5mm*45degree |
Other Items
Factory information
Yutai Optics, we specialize in the design and volume manufacturing of high performance optical components such as lens,prisms, windows,filters,mirrors and more for use in optical instruments and laser systems, as well as for telecommunications,medical, environment monitoring industry,material is widely ranged from optical glass to IR and UV glass.
As a Fast-growing supplier in Optics, Yutai Optics offers excellent service and good quality items,our products have been appreciated by many European and American customers,of course we build a long-term cooperation.YuTai Optics has quickly established itself as a leader in optical components from its advanced technology and quality control.
Sales Team
Yutai Optics has a professinal sales team with excellent service, we tracking from inquiry to delivery of items.We try our best to meet each customers'request.
Production Team
Yutai Optics has many experienced engineers and advanced machines, they are the important guarantee for the higher quality products.Our advanced production machines list:
Ring polishing machine, Single axis machine, Two axis machine, Four axis machine,Centering edging machine,Mechanical milling machine,Spectrograph, Grinding machine,nanotech.250upl,talysurfi120.
Inspection Team
Advanced testing equipment and methods are important guarantee for the production of high-precision products.Our testing machine is ZYGO, Stereo interferometer,Horizontal interferometer.We provide testing report for each batch for your items.
Payment:
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