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BK7 Aspherical Optical Lens

BK7 Aspherical Optical Lens

BK7 Aspherical Optical Lens
BK7 Aspherical Optical Lens
Categories Aspherical Lens
Place of Origin: China
Brand Name: Advance
Model Number: as requirements
Packaging Details: EVA+Vacuum
Supply Ability: 1000k/per month
MOQ: 1
Price: $0.2~$100
Certification: ROHS\Reach
Delivery Time: 3~30days after order
Payment Terms: T/T&L/C
Customized support: OEM, ODM
Usage: Optical
Structure: Plano-convex
Shape: Spherical
Material: Optical Glass
Focal length: custom
Coating: upon request
Diameter: 25 mm
Diameter tolerance: +/-0.005mm
Surface accuracy: N=1~0.5
Centerthickness tolerance: +/-0.001mm
Focal length tolerance: +/-1%
Surface quality: 10/5~60/40
Centerthickness: 5 mm
Width Tolerance: +/-0.01mm
Operatingtemperature: -20 to 70 °C
Refractiveindex: 1.52
Focal Length: 150mm
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Company Info.
Shanghai Advance Optical-Electronics Technology Co., Ltd
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BK7 Aspherical Optical Lens

BK7 Aspherical Optical Lens
Product Overview

BK7 quartz B270 optical cemented high precision achromatic doublet convex lens for optical system

Cemented Lens Technology

The cemented lens, also called an achromatic lens, is formed by cementing two single lens elements. The performance of multi-color (white light) imaging is significantly higher than that of a single lens. The achromatic lens consists of two lenses of different materials glued together to correct the dispersion of the glass. By eliminating the problem of chromatic aberration, achromatic lenses have been widely used in multi-color lighting and imaging applications, improving cost-effectiveness.

Technical Specifications
ParameterSpecifications
MaterialsBK7 or other optical glass, quartz, sapphire, Ge, Si, ZnSe, CaF2 etc
Diameter1.5~300mm
RadiusR0.8mm-∞
Focal length-30000mm~+30000mm
Center thickness tolerance+/-0.01mm
Diameter tolerance+/-0.005mm
Focal length tolerance+/-1%
Surface accuracyN=1~3
IrregularityΔN=0.1~0.5
Decenter3''~1''
Surface quality10/5~60/40
CoatingUpon request
Application areaImaging, Lighting, Laser etc
BK7 Aspherical Optical Lens product image
Professional Overview: The Geometric Advantage of Aspheric Surfaces

In the evolution of modern optical design, the BK7 Aspherical Optical Lens represents a significant leap beyond traditional spherical optics. A BK7 Aspherical Optical Lens features a complex surface profile that deviates from a perfect sphere, allowing it to eliminate spherical aberration more effectively than any standard singlet. By utilizing high-grade Borosilicate Crown glass, each BK7 Aspherical Optical Lens provides a stable, high-clarity solution for converging light without the blurring effects typically seen at the lens periphery.

BK7 Aspherical Optical Lens technical diagram BK7 Aspherical Optical Lens manufacturing process BK7 Aspherical Optical Lens application example BK7 Aspherical Optical Lens quality inspection
Functional Advantages and Applications

The BK7 Aspherical Optical Lens is a cornerstone of high-resolution photonics. Below are the functional advantages and real-world implementations:

  • Aberration-Free Imaging: A BK7 Aspherical Optical Lens corrects for the "blur" caused by marginal rays, ensuring a sharp focus across the entire sensor area.
  • Weight & Space Reduction: By implementing a BK7 Aspherical Optical Lens, engineers can simplify complex lens assemblies, reducing the overall length of the optical train.
  • Superior Light Collection: The unique profile of a BK7 Aspherical Optical Lens allows for larger apertures with lower f-numbers without sacrificing image quality.
  • Diverse Application Fields:
    • Laser Beam Shaping: Utilizing the BK7 Aspherical Optical Lens to transform Gaussian beams into uniform flat-top profiles.
    • Medical Endoscopy: Integrating a micro BK7 Aspherical Optical Lens to provide wide-angle, distortion-free views within internal cavities.
    • Digital Projection: Using the BK7 Aspherical Optical Lens to ensure edge-to-edge sharpness in high-lumen display systems.
    • Industrial Inspection: Deploying the BK7 Aspherical Optical Lens in machine vision cameras for high-speed precision sorting.
1.5mm To 300mm Optical Lens Design, BK7 Dichroic Optical Filter
Frequently Asked Questions
Q1: When is a BK7 Aspherical Optical Lens preferred over a spherical lens?
Answer: A BK7 Aspherical Optical Lens is essential when you need to correct spherical aberration in a fast system (low f-number). If a single spherical lens cannot achieve the required spot size, a BK7 Aspherical Optical Lens will usually solve the problem by redirecting marginal rays to the same focal point as the central rays.
Q2: How do you verify the surface accuracy of a BK7 Aspherical Optical Lens?
Answer: We utilize non-contact profilometers and 3D laser interferometry to map the aspheric surface. This ensures the BK7 Aspherical Optical Lens conforms exactly to the mathematical polynomial defined in your design.
Q3: Can the BK7 Aspherical Optical Lens be provided with high-power coatings?
Answer: Absolutely. We apply Ion-Assisted Deposition (IAD) coatings to the BK7 Aspherical Optical Lens, allowing it to withstand the high energy densities required in industrial laser welding and cutting.
Q4: Is the ±0.005mm diameter tolerance available for micro BK7 Aspherical Optical Lens?
Answer: Yes. For micro-optics, we use specialized centering equipment to maintain the ±0.005 mm tolerance, ensuring the BK7 Aspherical Optical Lens aligns perfectly with fiber optic connectors or micro-sensors.
Q5: Does the BK7 Aspherical Optical Lens have better thermal stability than plastic aspheres?
Answer: Yes, the glass-based BK7 Aspherical Optical Lens has a much lower coefficient of thermal expansion and higher melting point than plastic, making the BK7 Aspherical Optical Lens far more reliable in fluctuating industrial environments.
Q: What are your main products or which field do your products be used?
A: We are specialized in optical design, optical element processing, lenses assembly. Such as Spherical lens, Aspherical lens, Cylindrical lens, Reflector mirror, Filter, Rod lens, Camera lenses etc. Our products are widely used in imaging, laser, lighting applications.
Q: What's your advantage?
A:
  • We have about ten thousands optical modules and fixtures in stock, and employ several outstanding technicians and managers that enable us to provide customers with excellent quality in short lead times, while saving development costs.
  • We can help customers optimize optical systems and provide free optical solutions or suggestions.
Q: What's your MOQ?
A: 10pcs.
Q: What's your lead time?
A: 1 day for inventory and 25-35 days for new projects.
Q: What's your shipping type?
A: Usually by FedEx, DHL, TNT, EMS etc or customer appointed.
Q: What's your payment condition?
A: T/T, L/C, VISA, PayPal, Alipay or negotiation.
Q: What's your quality guarantee period?
A: Three years.
Company Profile

Shanghai Advance Optical-Electronics Technology Co., Ltd. is a technology-based production enterprise, officially established in September 2009. The plant site is located in Qingpu Industrial Park, Shanghai, only half an hour's drive from Shanghai Hongqiao International Airport.

The company gathers several excellent technicians in the optical industry and has comprehensive supporting capabilities such as optical mechanical and electrical design, processing and sales services. We wholeheartedly provide each customer with high-quality and convenient products and services.

Business Scope

Optical mechanical and electrical module development, precision optical element processing, camera lens design and processing, optical design and optical path optimization solutions, technical consultation and after-sales service.

Application Fields

Machine vision, artificial intelligence, biomedical, smart city, high-end monitoring, testing instruments, equipment, laser etching, special lighting, scientific research institutions, etc.

Company Advantages
  • Have comprehensive design, production and sales capabilities, and provide customers with one-stop convenient procurement services
  • It has tens of thousands of optical molds and samples, which can provide customers with fast proofing services with low cost
  • Be able to participate in the customer's new product research and development early, provide feasible plans and suggestions, and make the project less detours
Recommended optical products Company profile overview Company certifications Industry exhibition participation Product packaging Delivery process
Product Tags:

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BK7 Aspherical Optical Lens

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