Round\Plano Concave Optical Glass Lenses

• After-sales Service: Repair for free
• Warranty: 1 year
• Usage: Optical
• Type: Convex Lens
• Transmittance: >95%
• Certification: RoHS, ISO9001, CE
• Customized: Customized
• Transport Package: Carton, Blister, Customed
• Specification: As required
• Trademark: CPG
• Origin: China
• HS Code: 9001909090

Product Description

 Round\Plano Concave K9/ Bk7 Optical Glass Lenses
 

Product Despriction

       The plano concave lens is used to diverge the parallel light outward. The focal length of the flat concave lens is negative and the spherical

aberration is also negative. It can be used to correct the phase difference, spherical aberration, coma and distortion of other lenses. Similar to the flat
 
concave mirror, the side is generally opposite to the far object surface or infinity.

       K9 plano concave spherical lens can see the transmittance of near infrared (350-2000nm).

       H-K9L (N-BK7) is an optical glass commonly used in the preparation of optical elements.

       These uncoated plano concave lenses are prepared using H-K9L (N-BK7) conforming to ROHS standard. The collimated beam can converge on
 

the rear focus, or the point light source can be changed into a collimated beam.  

Technical Parameters
      

Items	Parameters
Material	optical glass, H-K9L (N-BK7)
Outer circle:	3mm-500mm ± 0.1mm
Radius of curvature:	± 1mm - ± 50000mm ± 1%
Center thickness tolerance:	± 0.05mm (we can process to ± 0.01mm with high precision)
Center deviation:	3′(we can process to 30 ″with high precision)
Surface accuracy:	λ/ 8 (high precision, we can process to 1 / 10λ)
Surface quality:	60/40 (we can process to 10-5 with high precision)
Effective caliber:	≥90%
Coating:	Maultilayer Antireflective Coating A:400-700nm B:650-1050nm C:1000-1650nm

Certificate

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