N-Bk7 Planoconcave Lens/Plano-Concave Lens/Fused Silica Plano-Concave Lens/Plano Concave Optical Lens

• After-sales Service: 3r Policy-Return, Replace, Refund
• Warranty: 12 Months
• Usage: Lighting, Medical, Optical, Photography, Laser, Astronomy, Imaging, Detection, etc
• Type: Plano-Concave Lens
• Transmittance: Central 90% of Diameter
• Shape: Single-lens
• Model NO.: RAY-XS003#
• Material: Optical Glass
• Lenses Color: Clear
• Certification: RoHS, ISO9001, CE
• Customized: Customized
• Coating: Ar.14, Ar.16, Ar.18, Ar.33 Coated
• Transport Package: Ar. 14, Ar. 16, Ar. 18, Ar. 33 Coated
• Specification: 6.35mm-50.8mm or custom manufacturing
• Trademark: Raytek
• Origin: China
• HS Code: 9002909090
• Production Capacity: 100000PCS Per Year

Product Description

General Introduction:
Raytek plane concave lens is a negative lens with a negative focal length, and the parallel beam will diverge after incident into the plane concave lens. Instead of converging into a single point, the incoming rays appear to spread out from a virtual point located in object space. At absolute conjugate ratios greater than or less than 5:1, a plano-concave lens is the best shape of a negative lens for reducing spherical aberration, coma, and aberration.

Products Name: N-BK7 Plano-Concave Lens
Alias: Optical Concave lens, N-BK7 Planoconcave Lenses, N-BK7 optical concave lens, Visible N-BK7 Plano-Concave Lens, Visible Plano-concave lens, IR Plano-concave lens, NIR Plano-concave lens, 1064nm Plano-concave lens, Uncoated Plano-concave lens, etc.

Tech Specification:

Item	Description
Material	Optical glass K9, Quartz, Fused quartz, BK7, sapphire
Surface Quality	10/5~80/5
size	6mm-300mm
Surface Accuracy, Irregularity	λ/4
Centration	≤3 arc min
Chamfers	0-0.8 mm face width
Chamfers Angle Tolerance	45° ±15°, typical
Focal Length	±5mm-1000mm±1%
Clear Aperture	≥central 90% of diameter
Effective Focal Length(EFL)	From -25mm to -200mm

Main Cooperation Materials Manufacturers:
CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,C-LASER,ETC

Main Export Countries & Areas:
Usa, Uk, Japan, Germany, Spain, France, Swiss, Korea, Russia, Pakistan, India, Portugal, Canada, New Zealand, Australia, Saudi Arab, Turkey, Finland, Poland ,etc.


Raytekoptics Extra value added services offered:
1). Optical workcraft & process solution design;
2). Rough processing raw materials;
3). Semi finishing raw materials;
4). Fabricate custom sizes and shapes;
5). Design and supply custom coatings;
6). Modify and resurface customer supplied materials;
7). Drill holes, notch glass and provide beveled substrates;
8). Precision polish optics with non-standard aspect ratios;

Payment Method: by T/T or Western Union.
Delivery time: 7-10 days.
Quality Warranty: Ruitaiphotoelectric(Raytekoptics) offers quality warranty for our optics products with "3R" policy. For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.