Glass Material:

• N-BK7 Optical Glass: A high-quality, low-dispersion borosilicate crown glass (SiO₂ + B₂O₃), widely used in precision optics due to its exceptional clarity, homogeneity, and thermal stability. Ideal for visible to near-infrared (350–2000 nm) applications.

Key Properties:

• Broadband Anti-Reflective (BBAR) Coating: Minimizes reflection losses (<0.5% per surface) across a wide spectral range (400–700 nm), enhancing light transmission (up to 99.5%) and image contrast.

• Plano-Convex Design: Flat (plano) and convex surfaces enable collimated light focusing with minimal spherical aberration, critical for precision aiming systems.

• Surface Quality: Precision-polished surfaces (scratch-dig: 40-20) ensure minimal scatter and distortion.

• Thermal Stability: Low coefficient of thermal expansion (3.3 × 10⁻⁶/K) ensures performance consistency in varying temperatures.

Primary Functions:

• Focuses collimated light into a precise spot or beam.

• Corrects optical aberrations in aiming devices.

• Enhances image resolution and targeting accuracy in low-light conditions.

Applications:

• Precision Aiming Optics: Rifle scopes, red dot sights, telescopic sights, and laser rangefinders.

• Laser Systems: Beam collimation in industrial lasers and medical devices.

• Imaging Systems: Microscopes, telescopes, and surveillance cameras.

• Industrial Metrology: Alignment tools and precision measurement instruments.

Technical Specifications:

• Diameter: Customizable (common sizes: 5–50 mm).

• Focal Length: Adjustable based on curvature.

• Coating Durability: MIL-C-675C standard for scratch and environmental resistance.

Advantages Over Alternatives:

• Superior transmission and reduced glare compared to uncoated lenses.

• N-BK7 offers better cost-performance balance than specialty glasses (e.g., fused silica).

Target Industries:

• Defense and military (firearm optics).

• Hunting and sports optics.

• Biomedical imaging and photonics.