Laser Diode Collimators

Semiconductor lasers often require specialized lenses due to their unique characteristics. In general, laser diodes are small point sources with large numerical apertures. Laser Diode Objectives are designed to accommodate the large input angles associated with these compact laser sources. Standard designs offer diffraction limited performance for numerical apertures as high as 0.6, making them useful for fiber optic coupling or collimating. The spectral range of our Diode Collimators is extended into the infrared region allowing for operations with most diodes within the 670 nm to 1550 nm wavelength range. The lenses may also be combined to produce focusing or non-focusing configurations as desired. Though designed for use with Diode Lasers, these lenses may be used with other lasers requiring highly corrected lenses within the visible and near infrared spectral range.

Features
  • Diffraction-limited design
  • Corrected for 5 to 10 mil Window
  • Long Back Working Distance
SPECS
  • FOV
    1.5 degrees
  • Transmission
    > 97%
  • Useable Spectral Range
    670 to 1550 nm
  • Wavefront Distortion
    < 1/4 Wave
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Model Description
54-18-15-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 18
Back Working Distance λ = 835 nm 4.1
Effective Focal Length λ = 835 nm 15.0
N.A. 0.60
Outside Diameter (mm) 28.58
54-71-300-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 71
Back Working Distance λ = 835 nm 280.0
Effective Focal Length λ = 835 nm 297.0
N.A. 0.12
Outside Diameter (mm) 82.55
54-18-23-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 18
Back Working Distance λ = 835 nm 31.75
Effective Focal Length λ = 835 nm 23.0
N.A. 0.39
Outside Diameter (mm) 31.75
54-51-50-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 50.8
Back Working Distance λ = 835 nm 6.7
Effective Focal Length λ = 835 nm 50.8
N.A. 0.50
Outside Diameter (mm) 63.50
54-47-200-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 47
Back Working Distance λ = 835 nm 185.2
Effective Focal Length λ = 835 nm 197.0
N.A. 0.12
Outside Diameter (mm) 57.15
54-18-76N-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 18
Back Working Distance λ = 835 nm 87.6
Effective Focal Length λ = 835 nm -75.9
N.A. 0.12
Outside Diameter (mm) 57.15
54-18-76-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 18
Back Working Distance λ = 835 nm 70.2
Effective Focal Length λ = 835 nm 75.3
N.A. 0.12
Outside Diameter (mm) 31.75
54-18-50-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 18
Back Working Distance λ = 835 nm 41.3
Effective Focal Length λ = 835 nm 50.6
N.A. 0.18
Outside Diameter (mm) 25.40
54-25-71-λ High Transmission, Broad Wavelength Range with ¼ Wave Performance
Specs & Docs
Specifications
Aperture (mm) 25
Back Working Distance λ = 835 nm 55.0
Effective Focal Length λ = 835 nm 70.9
N.A. 0.18
Outside Diameter (mm) 31.75
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