D12.7/25/38/50/60/100mm Customized Optical High Precision Bk7 Double Concave Lens

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 syst

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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
 

1MaterialBK7 or Fused silica
2Diameter2-300+/-0.15mm
3surface flatnesslambda/2,lambda/4
4dimension tolerance+/-0.2mm
5focal length tolerance+/-2%
6centration3arc min
7surface qualtiy60-40 scratch and dig
8 bevel0.2-0.5mm*45degree
Features:
High Precision Dimension Control,Optional Substrate Material,Diverges incident light Lower spherical aberrations than for Plano-Concave lenses, Ideal for Experimenting and Prototyping Applications
 
Applications:
Image Reduction and to Spread Light, Laser beam expanders, Optical character readers, Optical Viewers, Projection Systems, Imaging Systems, Laser Measurement Systems.
 
Description:
A double-concave lens is compose of two concave surface, has a negative focal length and are best used to diverge a converging beam. Similar to a plano-concave lens, a bi-concave lens can diverge a collimated beam to a virtual focus like a beam expander. 
 
Double concave  or Biconcave lenses are symmetrical with equal radii of curvature on both sides. The biconcave lenses are used in optical systems in combination with other lenses. These lenses also work as beam expanders, optical character readers, viewers and projection systems.
 
With its two concaves surface, the biconcave lens refracts light efficiently in a small space and spread widely the light.
Possible to use it for enlarging the illumination area.
 
Double Concave Lenses are used in beam expansion, image reduction, or light projection applications. These lenses are also ideal for expanding the focal length of an optical system. Double Concave Lenses, which have two concave surfaces, are Optical Lenses with negative focal lengths
 

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D12.7/25/38/50/60/100mm Customized Optical High Precision Bk7 Double Concave Lens



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 military, 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.

D12.7/25/38/50/60/100mm Customized Optical High Precision Bk7 Double Concave Lens

Our Advantage


Sells Team
Yutai Optics has a professinal sells team with excellent service, we tracking from inquiry to delivery of items.We try our best to meet each customers'request.             

Produciton 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.
D12.7/25/38/50/60/100mm Customized Optical High Precision Bk7 Double Concave Lens


Process for most optics
Material-cutting-rounding-milling-grinding-polishing-edging-cleaning-coating-gluing-edging-blacking-accembly-packing-shipping

Packaging & Shipping
 1 Package Detail: A. Standard carbon and envelop with plastic foam.
                               B. Safety green carton.
                               C. Customized.

D12.7/25/38/50/60/100mm Customized Optical High Precision Bk7 Double Concave Lens

 
2 Delivery Detail: Within 30 days.(Also depand on the quantity)D12.7/25/38/50/60/100mm Customized Optical High Precision Bk7 Double Concave Lens

 

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D12.7/25/38/50/60/100mm Customized Optical High Precision Bk7 Double Concave Lens

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