Selection and precautions for visual inspection light source

Due to the characteristics of multiple shapes and colors of visual inspection light sources, we can refer to the following methods when selecting visual light sources:

1. Need more contrast between foreground and background? — Consider using a black-and-white camera with a color light source

2. Problems with ambient light? - Try using a monochromatic light source with a filter

3. Glitter surface? — Try to scatter the dome light

4. Glittery, flat, but rough surface? — Try to scatter light coaxially

5. What is the shape of the surface? - Consider using a dark field of view (low angle)

6. When testing plastics – try using ultraviolet or infrared light

7. Need to see features through reflective surfaces? - Try using a low-angle line light source (dark field)

8. Combining light sources can sometimes solve the problem

9. Strobe can produce 20 times more intense light than continuous lighting

Precautions for the use of visual inspection light sources

The use of LEDs in high-temperature environments shortens their lifespan

1. In particular, the brightness of red LEDs will decrease by 1% for every 1 degree increase in temperature

2. Long-term use at high temperatures will gradually age and reduce brightness.

How to use the light source correctly to prevent aging and brightness degradation caused by its own heating

1. Use the light source with the lowest brightness level possible, and reduce the level of the light source to reduce the amount of current under the appropriate brightness, so that the heat emitted is less and the brightness loss is avoided. If the brightness decreases due to long-term use, the brightness level can be gradually increased.

2. A fan can be installed or air flow can be provided to dissipate heat, and the temperature can be lowered to slow down the attenuation of brightness. Install the fan ----- provide airflow - install a heat-dissipating bracket.

3. You can only turn on the light source or use the strobe controller when imaging. Switching on and off the LED light source several times in a row has little effect on its service life. When the LED is turned on as a strobe source or only according to external signal requirements, the brightness of the light source is stable and the LED lifetime is significantly extended.

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