LED light source has the advantages of small size, long life and high efficiency. The types of LED light sources are as follows:
Ring light source: illuminate directly above the measured object.
Strip light source: There are three illumination effects: direct, oblique and metering.
Linear light source: has a light-gathering effect, and high brightness can shorten the camera exposure time.
Back-type light source: The angle can be adjusted to match different characteristics of the test object and working distance.
Backlight: Illuminate from the back of the object under test.
External coaxial reflection light source: The side light source can irradiate the light parallel to the object under test through the beam splitter.
Internal coaxial point light source: need to be used with coaxial lens.
Hemispherical ridged light source: The light source can be diffused by the diffuser to form a uniform illumination area.
