Compact color sensor with fixed optics

Perceptive color sensor with fixed optics and intuitive control concept

Due to its make as a color sensor with fixed optics the CROMLAVIEW® CR50-FO color sensor is very compact. The sensor recognizes finest color differences on all kinds of surfaces. The working distance lies in a range of 30 - 60 mm, depending on this distance the diameter of the measuring spot varies between 5 and 10 mm. The sensor can easily be programmed using the intuitive and simple button operation.

A mounting bracket is provided for the alignment of the sensor on the measuring object.


The functional principle of the CR50-FO is based on the three range procedure. The measuring light is assessed with the tristimulus value functions and assigned to the three wave length ranges red, green and blue. Through the assessment with these tristimulus value functions the sensor is able to perceive colors similar to the human eye.
The sensor contains an own white light source clocked with a frequency of up to 2 kHz. Sampling takes place in both, the light and the dark phase. Additive ambient light cannot change the difference between the light and dark phase, so that the sensor is independent from ambient light.


  • Up to 4 colors can be stored
  • Response time from 10 ms and 1 ms (selectable)
  • 4 color output channels
  • Long-term stability of color recognition without new teach-in by CROMLASTAB®-technology
  • Fixed optics with a working distance of 30 - 60 mm
  • Measuring spot diameter 5 - 10 mm
  • Color recognition released via trigger
  • Signal settings and teach-in of colors via buttons

Technical Data

Sensing Channels

  • 1
  • 1 Internal stabilization channel

Drift stabilization


Receiving detector

Three range photo diode

Sensitivity steps

4 (20x, 40x, 80x, 200x)

Receiving signal resolution

3 x 4096 steps

Object illumination

  • Power white light LED
  • Adjustable (4096 steps)


9 LEDs for switching outputs and/or status


3 Buttons for teach-In

Color resolution

ΔELab < 1


0 ms, 10 ms

Color output channels


Protection standard

IP 54

Power supply

18 ... 28 VDC, max. 500 mA

Case temperature during operation

-10 °C ... 55 °C

Coupling in signal path

Fixed optics


50 mm x 50 mm x 21 mm


80 g


Dr. Gundolf Geske

This email address is being protected from spambots. You need JavaScript enabled to view it.

360° Image



CAD Models

Images list

We use cookies on our website. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). You can decide for yourself whether you want to allow cookies or not. Please note that if you reject them, you may not be able to use all the functionalities of the site.