BK7 Optical Glass Lens
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Detailed Product Description
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BK7 Optical Glass Lens Expertise: Versatile Material Engineering Our optical lenses are engineered for performance across the entire electromagnetic spectrum. We provide expert material selection tailored to your specific waveband requirements, ensuring optimal transmission and thermal stability.
Technical Specifications
Experience: Multi-Industry Application Solutions Our lenses aren't just components; they are solutions for global industries. We understand the nuanced requirements of:
Trustworthiness: Quality Assurance & Coating Custom Coating Services (Upon Request): Every lens can be optimized with tailored thin-film coatings, including BBAR (Broadband Anti-Reflection), V-Coats for specific laser lines, and Diamond-Like Carbon (DLC) for ruggedized IR windows. Rigorous Metrology:
Frequently Asked Questions Q1: How do you achieve a diameter tolerance of ±0.005mm for small
lenses? Achieving micron-level precision requires a combination of
high-stability CNC grinding machines and strictly controlled
ambient temperatures in our facility. For lenses between 1.5mm and
10mm, we utilize specialized micro-optics centering equipment to
ensure both dimensional accuracy and minimal decenter (down to 1"). Q2: What is the significance of "Irregularity ΔN = 0.1~0.5"? While Surface Accuracy (N) refers to the overall power deviation,
Irregularity (ΔN) measures the local variation or "smoothness" of
the lens surface. A ΔN of 0.1 indicates a nearly perfect spherical
surface, which is essential for diffraction-limited imaging and
high-power laser systems to prevent beam distortion and hot spots. Q3: For IR materials like Germanium (Ge) and ZnSe, how do you
manage surface quality? IR crystals are generally softer and more brittle than BK7 glass.
We employ specialized diamond turning (SPDT) and custom polishing
slurries to achieve a 20-10 Scratch-Dig surface quality. This
prevents subsurface damage and ensures high transmission efficiency
in the 8μm to 12μm range. Q4: Can you manufacture lenses with an extremely short radius
(R0.8mm)? Yes. Our production line is optimized for high-curvature optics.
Manufacturing a 0.8mm radius requires custom-made diamond tools and
precise interferometric monitoring to ensure the focal length
remains within the specified ±1% tolerance. Q5: When should I specify CaF₂ (Calcium Fluoride) instead of
Quartz? While Quartz is excellent for UV, CaF₂ is preferred when your
application spans from the Vacuum UV (180nm) to the mid-infrared
(7μm). Additionally, CaF₂ has a low refractive index and low
chromatic aberration, making it ideal for high-end apochromatic
lens designs. Q6: How do you ensure the durability of coatings on Sapphire
substrates? Sapphire is exceptionally hard (9 on the Mohs scale). To ensure
coating adhesion, we use Ion-Assisted Deposition (IAD) technology.
This process increases the packing density of the thin films,
making the coating as rugged as the substrate itself, capable of
passing severe abrasion and humidity tests. Q7: Do you provide certification for the focal length and surface
accuracy? Yes. Every high-precision order can be provided with a Metrology
Report. We use Zygo NewView interferometers for surface topography
and automated focal length meters to verify that every
parameter—from N values to center thickness—meets your exact
blueprint. |
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| Product Tags: 0.001mm 60/40 BK7 Optical Glass Lens bk7 60/40 0.001mm Optical Glass Lens 0.001mm BK7 60/40 Meniscus Lens |
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