Duo-Focus lenses and collimators
Opto-TL designs and produces custom-made duo-Fokus lenses and duoFocus systems «collimator + objective» where focus length changes without lens reinstallation.

Application in laser technology:

  • Cutting
  • Welding
  • Laser micro-treatment

DuoFokus 127/254_25_1070

83589_01.jpg

Technical parameters

Type
DuoFocus lens with one image plane for power lasers, change of laser spot without optics reinstallation.
Spectral range, nm
1030 – 1100
Focal length (f‘)
Working distance (s’F’)
f‘, mm s’F’, mm
127   (5") 168
178   (7") 151
254   (10") 168
1/e² diameter of input beam, mm
<20
Clear aperture, mm
31
Laser power
äî 3 CW
Mount
thread M58x1
Diameter, mm
126
Length, mm
197
Other characteristics
  • One image  plane  for two focus lengths 127 and 254 mm
  • Optical design of diffractive focusing quality 
  • Change of focus length by moving  of inside lens without reinstallation of the whole  objective to avoid the dust getting inside 
  • Compensation of focus thermal displacement  by shifting of movable lens
  • Various combinations of working focus lengths on request 
  • Possibility of mechanical design adaptation
Characteristics can be changed.

 

DuoFocus system «collimator + objective» – duoFokus 1x_2x_NA0.13_1070

83589_02.jpg

Technical parameters

Type
Zoom system «collimator + objective» with one image plane, change of laser spot without optics reinstallation
Spectral range, nm
1030 – 1100
Magnification 
   b = f’objective / f’collimator
-1X … -2.1X
Numerical aperture of input beam  NA @ 1/e² <0.1
Max numerical aperture NA 0.13
Working distance, mm
180
Laser power äî 3 CW
Mount
thread M58x1, QBH laser fiber connector
Diameter, mm 126
Length, mm
197
Other characteristics
  • One working distance for two magnifications 1x and 2x
  • Optical design of diffractive focusing quality 
  • Change of laser spot size by moving  of inside lens without reinstallation of the whole  objective to avoid the dust getting inside 
  • Compensation of focus thermal displacement  by shifting of movable lens
  • Various combinations of working focus lengths on request 
  • Possibility of mechanical design adaptation

Characteristics can be changed.