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                        | Product Name: | 
                        Bi-concave lenses 
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                        | Supply Ability:  | 
                        10000pieces | 
                       
                       
                        | Related proudcts | 
                        optical,  lenses,  bi-concave lenses,    | 
                       
                       
                        | Specifications | 
                        according the request of the customer  | 
                       
                       
                        | Price Term:  | 
                        L/C, T/T, Western Union, Money Gram | 
                       
                       
                        | Port of loading: | 
                        shanghai | 
                       
                       
                        | Minimum Order | 
                        1 piece | 
                       
                       
                        | Unit Price: | 
                        RMB 1 /piece | 
                       
                       
                     
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                  Bi-concave lenses with both curved sides have negative focal length, and are used for image reduction and to spread light.
  Material: BK7 , Silica andothers
  Focal length tolerance:±2% ~ ±0.5%
  Diameter tolerance:±0.2mm ~ ±0.05mm
  Center Thickness:±0.2mm ~ ±0.03mm
  Surface quality:60/40 ~ 10/5
  Surface accuracy:λ/4@633nm
  Centration: 3'~1'
  Bevelling:< 0.25mm x 45°
  We will also do according to the specifications such as size, structure, material, surface treatment and so on that the customers required. We supply them with good quality and low price. Please contact us to know ***ails. Besides, there are a large volume of optical components in various shapes and sizes in stock to facilitate quick deliveries.
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                          | Company: | 
                          Jilin Tianhua Opto-electrical Technology Development Co., Ltd.
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                          | Contact: | 
                          Ms. Kate Qin | 
                         
                         
                          | Address: | 
                          Torch road 286,High Technology district, Changchun city, Jilin Province, China  | 
                         
                         
                          | Postcode: | 
                          130012 | 
                         
                         
                          | Tel: | 
                          86-431- 85175526 | 
                         
                         
                          | Fax: | 
                          86-431-85179189 | 
                         
                         
                          | E-mail: | 
                           
						  
						       
                    
				  
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