AR Coated Aspherical Lens

• Customization: Available
• Usage: Optical
• Transmittance: >95%
• Material: Optical Glass
• Lenses Color: Clear
• Certification: RoHS, ISO9001, CE
• Customized: Customized
• Trademark: CPG
• Origin: China

Product Description

Convex/Concave Aspherical Lenses  Bk7/H-K9l Polish  Anti-Reflection Optical Plano 
 

Product Description
        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

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