Custom Chrome on glass calibration target & chart and custom Backlights in one assembly |
Use Dot Vision custom high uniformity Backlights to match the size of the calibration targets/charts/reticles completely. Sometimes it’s difficult to find an illumination to match the dimension of the test&calibration targets/charts/recticles precisely, especially when you have high uniformity demanding with the backlights. In this case Dot Vision is an option for you. |
Why to choose backlight unit from Dot Vision |
● Standard backlights in stock for selection; ● Fast custom design and manufacturing on backlight to match with custom calibration target, especially in the case when the assembling space is limited and compact design is required; ● Calibration target and backlight as an assembly for one-stop sourcing to save time and cost; |
Uniformtiy |
Backlights from Dot Vision is specially designed for high accuracy demands in test&calibration processing. Especially the uniformity is >95% among the whole area;
Measuring Method 01--Backlight uniformity map of illuminance values from pre-defined location using CL-500A tool

Measuring Method 02--High Density Uniformity map of backlight via camera image
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Figure 01 Uniformity ROI area 120X170mm-Original
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Figure 02 Uniformity ROI area 120X170mm |
Color and Spectrum |
● In Red, Green, Blue, White color, and NIR (e.g. 850nm, 870nm, 940nm) IR (e.g. 1050nm); ● Customized spectrum can be flexibly provided;
● Broadband white / D65 white are on requrest; 


● Specific peak wavelength with accuracy +/-3nm is customizable as your design completely; ● Multiple colors in one unit on request; ● Measured spectrum can be provided; |
Backlight Controller |
● Matchable constant-current controllers and constant-voltage (24V DC) controllers are in stock; ● Backlight controlling: Besides manual control buttons, switch on-off and brightness of backlight can also be PC-controlled; |
Brightness |
Custom brightness as required; |

Backlights are placed behind the chrome on glass calibration target to highlight the outline of delicate patterns/features. Backlights offer a very homogeneous, uniform and diffuse light meanwhile minimizing the reflections of the object.




