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Plano-Convex Cylindrical Lenses

  • Substrate materials: Custom (e.g. N-BK7, Fused Silica, CaF2, BaF2, MgF2, ZnSe, etc.)
  • Ideal for circularization of laser diode output, laser line generation, and image aspect ratio modulation
  • Circular and rectangular versions are available
  • Standardized focal lengths and diameters convenient for OEM 
  • Applications: Laser scanners, diode lasers, optical metrologies, and spectroscopes
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Specifications:

Type Plano-Convex Cylindrical Lenses Material BK7,UVFS, ZnSe, CaF2
Clear Aperture >90% Size Tolerance +0/-0.1mm
Thickness Tolerance ±0.2mm Surface Irregularity λ/2 @ 633 nm
Surface Quality 40/20 S/D Paraxial Focal Length ±2% @587.6nm
Chamfer 0.2mm x 45 degree

Plano-Convex Cylindrical Lens is an optical plano-convex lens in columnar form, with positive focal lengths, condensing, or expanding light in 1 dimension (i.e. into one thin line) rather than a single point as in the case of a spherical plano-convex lens. Plano convex cylindrical lenses feature versatile functionalities, encompassing modulation of the aspect ratio of images through one-dimensional compression, linear laser generation, and correction of the ellipsoid beam spot in edge-emitting laser diode into a circular shape closer to the ideal Gaussian profile (laser beam shaping). These functionalities could be utilized in diverse electro-optical instruments, such as laser scanning, diode laser beam circularization, optical metrologies, and spectroscopes. Like its spherical counterpart, plano convex cylindrical lenses are also optimized for infinite conjugate ratios and become inefficient for conjugate ratios below 5:1. 

Hangzhou Shalom EO offers various custom Plano-Convex Cylindrical lenses made from materials including, but not limited to N-BK7, Fused Silica, CaF2, BaF2, MgF2, ZnSe, etc. The lenses are exquisite for light-processing uses like beam-shaping, linear light modulation, and generation, as to be incorporated into laser scanners, diode lasers, optical metrologies, and spectroscopes. Custom coating options for convex cylindrical lenses include uncoated substrates, Broadband Anti-reflection (BBAR) coatings that effectively reduce reflection (average reflection below 0.5%) over a certain wavelength range, and laser line V-coating which provides higher transmission (average reflection below 0.25%) at a narrower range around a certain wavelength, and MgF2 AR coatings (average reflection below 1.5%) with competitive low price. Both circular and rectangular versions are available.


Application Notes:

To minimize spherical aberration, engineers from Shalom EO suggest that incoming light beams should be projected to the curved side of the lens for converging purposes.