Description
General Introduction: Raytek's uncoated n-bk7 precision planoconvex lens is polished with a master test plate to achieve strict tolerances and minimize wavefront distortion in harsh laser electro-optic focusing applications.
N-BK7 is an excellent lens material for most visible and near infrared applications. It is the most common borosilicate optical crown glass, which can provide excellent performance and moderate price. Because of its high uniformity, low content of bubbles and inclusions, and easy manufacture, it has become an excellent choice for transmission optical elements. N-BK7 is also relatively hard and has good scratch resistance. The transmission range of BK 7 is 380 to 2100 nm. It is not recommended for temperature sensitive applications such as precision mirrors
Products Name: Uncoated N-BK7 Plano-Convex Lenses
Alias: Uncoated N-BK7 Plano-Convex Lenses, Uncoated Plano-convex Lens, Uncoated lens, Uncoated N-BK7 Lens, Uncoated Plano-convex mirrors, Uncoated Lenses,etc
Main Applying: Camera, film production, projection equipment, laser photoelectric focusing, etc
Products Highlights:
Our uncoated precision planoconvex lenses are polished to a strict tolerance and use a master test plate to ensure minimal wavefront distortion to meet the stringent requirements of laser electro-optic focusing applications. Strict surface quality tolerance minimizes scattering and unnecessary diffraction effects. Our standard precision lens has a surface quality of 40-20 scratch pitting and a surface power of 1.5λ. We also offer economical lenses with 60-40 scratch pitting surface quality to provide superior performance at a lower price.
Advantages of uncoated lens
The uncoated lenses are used in optical systems and equipment, mainly because they have a very wide wavelength range, high damage threshold ratio, and no need to be coated, so they are always cheaper than coated lenses. In addition, the uncoated lens makes the image in the camera look more "retro", which is becoming more and more popular in cinema film production.
1).Uncoating/Low Cost.
2).Flat convex lens without coating, applied to focus
3).N-bk7 substrate with scratch less than 0.04mm, pitting point less than 0.02mm or scratch less than 0.06mm and pitting point less than 0.04mm
4).Standard focal length for different lens sizes
5).Matching with ROHS Certification
6).High precision & high surface roughness;
7).Sizes can be customized as per the customers’ request
8).Quick lead time and delivery time.
9).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.
10).Excellent post-sale quality warranty, with “3R”-return, replace & refund policy
Main Tech Specification:
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Universal Optical Character Tech Data |
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Optical Lens Type: |
Plano-Convex Lenses |
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Lens Substrate: |
N-BK7 or custom as per the demand of customers |
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Surface Quality: |
40-20 scratch-dig Or custom manufacturing as per demand |
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Surface Flatness: |
λ/4 |
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Surface Accuracy/Irregularity: |
λ/4 (40-20 scratch-dig models) λ/2 (60-40 scratch-dig models) |
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Surface Accuracy,(Power) |
1.5λ (40-20 scratch-dig models) |
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Coating Type: |
Uncoated Or custom manufacturing as per demand |
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Antireflection Coating Wavelength: |
Uncoated Or custom manufacturing as per demand |
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Size/Specification Tech Data |
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Dia. |
25.4 mm 50.8 mm 12.7 mm 6.35 mm 76.2 mm 38.1 mm 8.0 mm |
12.0 mm 15.0 mm 10.0 mm 20.0 mm Or custom manufacturing as per demand |
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Effective Focal Length(EFL): |
6.4 mm 10.0 mm 12.7 mm 16.0 mm 19.0 mm 20.0 mm 21.0 mm 25.0 mm 25.4 mm 26.1 mm 33.0 mm 38.1 mm 38.6 mm 50.0 mm 50.2 mm 55.0 mm 62.9 mm 75.0 mm 75.6 mm 88.3 mm |
100 mm 113 mm 125 mm 138 mm 150 mm 175 mm 200 mm 225 mm 250 mm 300 mm 350 mm 400 mm 450 mm 500 mm 600 mm 750 mm 850 mm
1000 mm as per demand |
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Other Available Coating Workcraft: |
Uncoated 10.6 µm 230-266 nm 245-440 nm 250-550 nm 355 nm 400-700 nm 430-700 nm 500-1100 nm |
532 nm 650-1000 nm 660-1380 nm 1000-1550 nm 1064 nm 1064 & 532 nm Or custom manufacturing as per demand |
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Other Available Lens Substrates: |
Molded glass Fused silicon glass N-BK7 K9 K7 B270 D-LAK
D-ZK3 |
D-ZLaF52La9 ECO5508 L-BAL 35 (589/611)48 7980/7979/7972/7973/SQ0/1/8655/SK1300/1310 NIFS/BK7/N-SF6/N-SSK/SBL7/Zerodur/CaF2/SIC |
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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.
