• High NA
• Diffraction Limited Performance
• Broadband AR Coated Optics in Stock
• Collimate or Focus Light with a Single Element

This Aspheric lens focuses or collimates light without introducing spherical aberration into the transmitted wavefront. For monochromatic sources, spherical aberration is often what prevents a single spherical lens from achieving diffraction limited performance when focusing or collimating light. Thus, an aspheric lens is often the best single element solution for many applications including collimating the output of a fiber or laser diode, coupling light into a fiber, spatial filtering, or imaging light onto a detector. These molded glass aspheres are premounted in non-magnetic 303 stainless steel lens cells that are engraved with the part number for easy identification. They have a metric thread that makes them easy to integrate into an optical setup or OEM application.

• Design Wavelength: 670 nm
• Magnification: Infinite
• Numerical Aperture: 0.47
• Window Thickness: 0.25 mm
• Clear Aperture: 3.52 mm
• Laser Window Material / Index: N-BK7/1.5
• Effective Focal Length: 3.3 mm
• Glass: N-SF57
• Working Distance: 1.94 mm
• Surface Quality: 40-20 Scratch-Dig
• Thread: M6 x 0.5