Plano-convex lens element #65-456

BK7visiblelaser

Overview
TECHSPEC® 405 nm Laser V-Coated Plano-Convex (PCX) lenses are optimized for maximum throughput at the 405 nm laser design wavelength. These plano-convex singlets collect and focus laser light and its harmonics, offering typical per-surface reflection of <0.25% at the design wavelength to minimize losses in multi-element optical systems.

Key Features

• <0.25% reflection per surface at 405 nm for diode applications
• Laser V-Coat optimized for 405 nm
• Available in other Laser V-Coat center wavelengths and additional coating options
• Designed for collecting and focusing laser light and harmonics

Coating & Wavelength Options
These PCX lenses are offered standard with Laser V-Coat at 405 nm. Additional Laser V-Coat center wavelengths are available, and alternative coatings include uncoated, MgF2, VIS 0°, VIS-NIR, NIR I and NIR II to suit varied system requirements.

Application Notes
With per-surface reflection below 0.25% at 405 nm, these lenses are well suited to diode laser applications and multi-component optical assemblies where high transmission and low back-reflection are required. They are commonly used for beam collection, focusing and coupling tasks in laser systems.

Technical Specifications

• Design Wavelength (DWL): 405 nm
• Per-surface Reflection at DWL: <0.25% (typical)
• Coating (standard): Laser V-Coat (405 nm)
• Surface Quality: 40-20
• Power (P-V) @ 632.8 nm: 1.5λ
• Irregularity (P-V) @ 632.8 nm: λ/4
• Focal Length Tolerance: ±1%
• Bevel: Protective as needed
• Damage Threshold (by design): 3 J/cm² @ 405 nm, 10 ns