Dome Light

2019/04/23
Dome Light
Dome Light

A dome light radiates indirect light at various angles due to the LEDs being mounted at the surface and shinning up into the dome. When standard lighting is used direct reflection from the part can result in a hot spot (halation) causing inspection and reliability problems. As the dome light diffuses at all angles a target with a complicated shape can be uniformly lit with diffuse light from all angles eliminating hot spots. As the target is uniformly lit a stable reliable inspection can be easily setup.

How to operate dome lights
How to operate dome lights
The dome light ensures the text can be recognized by illuminating all parts of the target with diffuse light.
The dome light ensures the text can be recognized by illuminating all parts of the target with diffuse light.
Due to the shiny surface and inconsistent shape the print cannot be recognized.
Due to the shiny surface and inconsistent shape the print cannot be recognized.
The diffuse light ensures uniform illumination across the whole cap.
The diffuse light ensures uniform illumination across the whole cap.
The standard lights LED’s can be seen and interfere with the inspection.
The standard lights LED’s can be seen and interfere with the inspection.
As the dome lights from all angles the light is uniform across the curved areas.
As the dome lights from all angles the light is uniform across the curved areas.
Due to the curved glossy surface the light being used creates a hotspot (halation).
Due to the curved glossy surface the light being used creates a hotspot (halation).

To better understand the use of dome lights in the industry, you can see the following video to distinguish text on glossy surfaces.

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