Packaging & Delivery

Packaging Details:	customized boxes and protective packing
Delivery Detail:	10 days

Specifications

bi concave double concave lens
Size:2mm to 500mm
S/Q:40/20 or better
Flatness:1/2 Lambda
customized lens and stock lens

                                            bi concave lens or double concave lens 

 

The bi concave Lens or double concave lens is primarily used for diverging light and image reduction, as well as increasing system focal lengths and collimating converging light beams.

 

• Have negative focal lengths
• Diverge collimated incident light
• Forms only virtual images which are seen through the lens
• Reduce spherical aberration, coma and distortion at negative-infinite or near-infinite conjugate ratios
• With the concave surface facing the longest conjugate distance

 

 

specifications requirement of concave lens:

• Material:BK7 or other materials
• Focal length:+/-1%
• Center thickness tolerance:+/-0.01mm
• Centration:1 arc minutes
• Surface Figure:lambda/2 at 633nm on plano side
• Surface quality:40/20 stratch/dig
• Clear Apenture>95%
• Chamfer Protective:0.25mm at 45 degree typical
• Coating:optional

 

 

 

 

 

Whole Procedures of product processing                                                          

 

 

1.Cutting materials,

 

2.preparing toolings and models,

 

3.Coarse grinding,

 

4.Polishing surfaces,

 

5.Cleaning the lenses,

 

6.testing, 

 

7.coating,

 

8.testing Finish.

 

 

 

 

 

Changchun Realpoo Photoelectric Co., Ltd.

Basic Information

Business Type:

Main Products: Optical Lens,Prism,Cylindrical Lens,Camera Lens,Laser

Location:Door 1, No. 4, Puqing Road, Chaoyang District, Changchun, Jilin, China (Mainland)

Total Employees: 11 - 50 People

Year Established: 2012

Trade Information

Top 3 Markets:

Accepted Payment Currency:

Nearest Port:

Average Lead Time:

Overseas Office: No

Company Pictures

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