LightPath 357300 | 4mm Dia., 0.70 NA, BBAR (350-700nm), Molded Aspheric Lens

Product Details Eliminate Spherical Aberration Multiple Coating Options Available Range of Numerical Apertures LightPath Geltech Molded Aspheric Lenses are used to eliminate spherical aberration and improve focusing and collimating accuracy in a variety of laser applications. Low NA aspheric lenses are designed to maintain beam shape, while high NA lenses gather all available light to maintain beam power over long distances. LightPath Geltech Molded Aspheric Lenses are ideal for applications including sighting systems, bar code scanners, laser diode-to-fiber coupling, optical data storage, or biomedical lasers. Specifications General Type: Aspheric Lens Typical Applications: Collimate or Focus Laser Light Compatible Window: 0.25mm thick BK7 Lightpath Lens Code: 357300 Physical & Mechanical Properties Diameter (mm): 4.00 ±0.015 Center Thickness CT (mm): 1.84 +/- 0.02 Edge Thickness ET (mm): 0.822 Clear Aperture CA (mm): 3.6 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 2.50 @ 405nm Focal Length Tolerance (%): ±1 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More D-LaK6 f/#: 0.625 Numerical Aperture NA: 0.70 Coating: BBAR (350-700nm) Coating Specification: R avg ≤0.5% @ 350 – 700nm Wavelength Range (nm): 350 – 700 Aspheric Design Wavelength (nm): 405 Working Distance (mm): 1.6 Surface Quality: 40-20 Conjugate Distance: Infinite Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 247: Compliant ×