The Coax- Series is a series of telecentric measuring lenses that meet the highest requirements with regard to functionality. Excellent telecentric combined with an exceptional high contrast, make these lenses ideally suited for demanding applications. With incident light these telecentric measuring lenses are perfectly suited to detect even the smallest surface defects.  

 Upon request the optics can be equipped with variable iris, polarizing filter and retarder plates ; high-end optics for the most difficult surface inspections. With OptiBench IB/E OPTICS can deliver exact data of distortion, MTF and telecentricity as protocol. The TZ coax-series covers linear magnifications from 0.5 to 3.0. Another Accessoire for telecentric coax series lenses are different illumination systems. Typically LED based illumination is used, but fibres can also be attached. Of course all lenses can be used without coax illumination as single stand alone telecentric lens.

In the table below you can see the available base lenses. Ask for special adjustment to fit your application needs perfectly.


  • Base lens – add type of table above
  • Mechanical Fibre Couplung Adapter – add A after Bese lens type
  • Variable Iris – add letter B after Base lens type
  • Polarising filter – add letter P after Base lens type
  • Retarder Plate – add letter R after Base lens type
  • LED Illumination – add LED colour after Base lens type

The following colours are available:
White (VIS), Near Infrared (IR), Red (R), Red-Orange (RO), Green (G), Yellow (Y), Blue(B).


  • TZ6-1.0-50 B LED G = Lens with variable iris and green led coaxial unit
  • TZ12-0.5-50 ABPR= Lens with variable iris, polarizer, retarder plate and mechanical adapter for fibre coupling
Technical specifications
TZ3-2.0-35 1/2″ 2.0 35 mm  
TZ5-1.5-36 1/1.8″ 1.5 36 mm  
TZ6-1.0-50 1/2″ 1.0 50 mm
TZ12-0.5-50 1/2″ 0.5 50 mm
TZ15-0.54-40 1/1.8″ 0.54 40 mm