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Wholesale Optical LED Laser BK7 Biconcave Custom Double Concave Lens
The Wholesale Optical LED Laser BK7 Biconcave Custom Double Concave Lens is a precision-engineered optical component specifically designed for advanced laser and LED applications. Manufactured from high-quality BK7 optical glass, this lens provides excellent transmission in the visible and near-infrared spectrum (350-2,000 nm) while maintaining low internal stress and minimal optical aberrations. The biconcave (double concave) geometry diverges light beams effectively, making it ideal for controlling laser beam diameter, expanding LED illumination, or collimating light in compact optical assemblies.
With customizable diameters, focal lengths, and surface quality standards (commonly 40/20 or 20/10 scratch-dig), the Wholesale Optical LED Laser BK7 Biconcave Custom Double Concave Lens ensures consistent optical performance in both laboratory and industrial environments. Anti-reflective coatings can be applied to improve transmission efficiency, reduce surface reflections, and enhance system reliability. This lens is widely adopted in applications requiring precise beam shaping, high uniformity, and reliable long-term optical stability.
Specification
Materials
BK7 or other optical glass, quartz, sapphire, Ge, Si, ZnSe, CaF2 etc
Diameter
1.5~300mm
Radius
R0.8mm-∞
Focal length
-30000mm~+30000mm
Center thickness tolerance
+/-0.01mm
Diameter tolerance
+/-0.005mm
Focal length tolerance
+/-1%
Surface accuracy
N=1~3
Irregularity
ΔN=0.1~0.5
Decenter
3''~1''
Surface quality
10/5~60/40
Coating
Upon request
Application area
Imaging, Lighting, Laser etc
Advantages of the Wholesale Optical LED Laser BK7 Biconcave Custom Double Concave Lens
Precise beam divergence: The biconcave shape allows controlled expansion of LED or laser light with minimal spherical aberration.
High optical transmission: BK7 glass ensures excellent light throughput across visible and near-infrared wavelengths.
Customizable design: Diameter, focal length, and curvature can be tailored to specific system requirements.
Durable and stable: BK7 is resistant to thermal stress and mechanical deformation, ensuring long-term optical reliability.
Enhanced system efficiency: Optional anti-reflective coatings reduce reflection losses and improve light utilization.
Versatile optical component: Suitable for integration into LED illumination systems, laser modules, and scientific instrumentation.
Application Fields
LED illumination systems: Beam shaping and divergence control for uniform light distribution.
Laser systems: Beam expansion, collimation, or divergence in optical experiments and laser modules.
Scientific instrumentation: Microscopy, interferometry, and precision optical assemblies.
Photonic research: Used in laboratory setups requiring high-quality diverging optics.
Industrial sensing: LED and laser-based measurement devices for distance, alignment, or profiling.
Education & prototyping: Optical kits and educational laboratories for beam experiments.
Q & A
Q1: What is the function of the Wholesale Optical LED Laser BK7 Biconcave Custom Double Concave Lens?
A: This lens is designed to diverge light beams from LEDs or lasers, expand beam diameters, and control optical paths in precision systems. Its biconcave geometry minimizes spherical aberration while maintaining uniform divergence.
Q2: Why is BK7 used for this biconcave lens?
A: BK7 optical glass offers high transparency in the visible and near-infrared spectrum, excellent homogeneity, low thermal expansion, and resistance to mechanical stress, making it ideal for precision LED and laser applications.
Q3: Can this lens be customized for different beam diameters or focal lengths?
A: Yes, the Wholesale Optical LED Laser BK7 Biconcave Custom Double Concave Lens can be customized in diameter, curvature, and negative focal length to match specific optical system requirements.
Q4: What coatings are available for the lens?
A: Anti-reflective (AR) coatings can be applied to reduce reflection losses, increase transmission, and improve the overall efficiency of LED and laser optical systems.
Q5: Which industries commonly use this lens?
A: Industries including laser manufacturing, LED lighting systems, scientific instrumentation, photonics research, industrial sensing, and educational laboratories frequently use this custom biconcave lens for precision beam control.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2009
Total Annual:
8000000-10000000
Employee Number:
45~100
Ecer Certification：
Verified Supplier
1. We possess comprehensive capabilities in design, production and sales, providing customers with one-stop convenient procurement services and saving a great deal of time and cost for both new and existing projects.
2. We have tens of thousands of optical molds and samples, offering customers low-... 1. We possess comprehensive capabilities in design, production and sales, providing customers with one-stop convenient procurement services and saving a great deal of time and cost for both new and existing projects.
2. We have tens of thousands of optical molds and samples, offering customers low-...
