20mm Bk7 K9 Glass Aspheric Lenses for Telescope

• Warranty: 1y
• Usage: Optical
• Type: Aspheric Lens
• Transmittance: >95%
• Shape: Aspheric Lens
• Material: Optical Glass
• Lenses Color: Clear
• Certification: RoHS, ISO9001, CE
• Customized: Customized
• Transport Package: Foam Carton Inner, Then Cartons to Pack Them
• Specification: customized
• Trademark: YBT
• Origin: Shen Yang
• Production Capacity: 2000

Product Description

Aspheric Lenses
Precision Aspheric Lenses are designed to focus light while eliminating spherical aberration from divergent light sources in applications including focusing the output of a laser diode. Aspheric lenses can increase the numerical aperture of a lens while minimizing system aberrations. Aspheric lenses may also reduce the number of elements needed in a multi-element system. Aspheric lenses can reduce overall system weight while providing advantages such as increasing throughput or simplifying assembly.

 

Product Name	Aspherical lens
Diameter &Tolerance	3-300±0.02mm
Clear aperture	>90%
Thickenss &Tolerance	0.5-50±0.0mm
Surface Flatness	1/10 Lambda
Surface Quality	20-10
Material	N-BK7,Quartz, Sapphire, CaF2, Ge,Si,ZnSe
Beveling	0.25±0.1mm
Coating	AR coatimg/Reflective coating/Dichroic film