N-Bk7 Bi-Convex Lenses/N-Bk7 Biconvex Lens/Bk7 Bi-Convex Lens

• After-sales Service: 3r Policy-Return, Replace, Refund
• Warranty: 12months
• Usage: Lighting, Medical, Optical, Photography, Laser, Astronomy, Imaging, Detection, etc
• Type: Bi-Convex Lenses
• Transmittance: Central 90% of Diameter
• Shape: Single-lens
• Model NO.: RAY-OL033#
• Material: Optical Glass
• Lenses Color: Clear
• Certification: RoHS, ISO9001, CE
• Customized: Customized
• Coating: Ar.14, Ar.16, Ar.18, Ar.33 Coated
• Substrate: N-Bk7 Optical Glass or Equivalent N-Bk7
• Surface Quality: 40-20 Scratch-Dig or Custom Manufacturing
• Surface Flatness: Lambda/4 or Custom Manufacturing
• Effective Focal Length(Efl): From +6.4mm to +1000mm
• Surface Accuracy, Irregularity: Lambda/4 or Custom Manufacturing
• Transport Package: Cartons or Wood Case
• 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 biconvex lens is usually used for focusing applications, and is the best choice when the distance between the object and the imaging lens is equal or close. These biconvex lenses have an exact convex surface at both ends.
Raytek's n-bk7 biconvex lens can choose not to be coated, but also to be coated with a variety of multilayer antireflective coatings. All lenses are guaranteed λ/ 4 surface accuracy and 40-20 scratch-dig surface quality. N-bk7 is an excellent lens material for most visible and near infrared applications. It has high homogeneity, low content of bubbles and inclusions, simple and direct manufacture, and can provide excellent performance with economic cost.

Products Name: N-BK7 Bi-Convex Lenses
Alias: N-BK7 Bi-convex Lenses,N-BK7 Bi-convex Lenses, Optical Convex lens, N-BK7 optical convex lens, Visible N-BK7 Bi-convex Lens, Visible Bi-convex lens, IR Bi-convex lens, NIR Bi-convex lens, 1064nm Bi-convex lens, Uncoated Bi-convex lens,Double convex lens,etc

Lens Substrates:
N-BK7

Optional I:	N-BK7 from CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,ETC
Optional II:	Equivalent N-BK7 Made in China, C-laser own brands

Coating Type:

Coating Code:	Coating Type	Wavelength Range
AR.14	Visible Multilayer	430-700 nm
AR.16	NIR Multilayer	650-1000 nm
AR.18	IR Multilayer	1000-1550 nm
AR.33	Laser Line V-Coat Multilayer	1064 nm
-	Uncoated	-

Main Applying:

Applying Fields I:	Relay imaging (physical and real) Focused divergent beam Converging beam Beam expander lens Imaging lens Focusing lens and other optical lens
Applying Fields II:	Laser beam expansion Optical reader Observer Projection system
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Main Characters:
1).High performance 40-20 scratch-dig N-BK7 substrates
2).Double-Convex shape for focusing applications
3).Standardized focal lengths across different lens sizes

Products Highlights:
1).Different grades materials for option.
2).High precision & high surface roughness;
3).Sizes can be customized as per the customers' request
4).Quick lead time and delivery time.
5).Matching super optics custom and processing capacity, including Moulding, CNC machining, Polishing, Particle beam processing, Magnetic flux conversion processing, Grinding, Coating, Lightweighting, Custom Shaping, Counterbores, Drilling & Coring, Edge & Bevel Polishing,3D Contouring, Bevels & Chamfers, Steps & Slots, Laser Cutting & Marking, Metrology & Inspection, Precision Pitch Polishing, Double-Sided Polishing, Optical Assembly, Measuring, etc.
6).Excellent post-sale quality warranty, with "3R"-return, replace & refund policy

Main Optical Tech Specification:

Tech Data	Description
Lens Shape	Bi-Convex (Double Convex)
Material	N-BK7
Surface Quality	40-20 scratch-dig
Surface Flatness	λ/4
Surface Accuracy, Irregularity	λ/4
Surface Accuracy, Power	1.5 λ
Centration	≤3 arc min
Chamfers	0-0.8 mm face width
Chamfers Angle Tolerance	45° ±15°, typical
Focal Length Tolerance	±1 %
Clear Aperture	≥central 90% of diameter
Effective Focal Length(EFL)	From +6.4mm to +1000mm

Popular Physical Size Specification:

Size	6.35mm/12.70mm/25.40mm/50.8mm,or Design & custom manufacturing as per demand.
Size Tolerance	+0/-0.1 mm
Thickness	-
Thickness Tolerance	-

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.