Adjustable light source and automatic optical detecting system with the same
A technology of automatic optical inspection and light source device, which is applied in the directions of optical testing flaws/defects, measuring devices, non-contact circuit testing, etc., which can solve the problems of inability to effectively identify imaging and affecting the clear imaging of drill holes 82.
Inactive Publication Date: 2008-07-16
MACHVISION INC
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Problems solved by technology
In addition, the surface color of the printed circuit board 80 and the chromaticity of the light 121 will also affect the clear imaging of the drilled hole 82. However, the conventional visual inspection system 10 cannot provide an optimized projection light for the color characteristics of the object to be inspected.
For example, although the areas of the measurement target and the background (board surface) on the object to be detected are different in color but have similar gray levels, the measurement target and the background cannot be effectively identified and imaged in a general line scan camera.
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[0016] image 3 It is a schematic diagram of the automatic optical inspection system with adjustable light source device of the present invention. The automatic optical inspection system 30 includes a platform 90 capable of fixing the object to be inspected, a visual imaging module 70 and a light source device 31 . The visual imaging module 70 at least includes a magnification lens 71 for collecting reflected light, and a signal receiver 72 for converting optical signals into electrical signals. The light source device 31 includes a plurality of pairs of light generators, and the symbols 311 and 312, 321 and 322, 331 and 332, and 341 and 342 are four pairs of independently controlled first to fourth light generators, and each pair can be adjusted independently. The chromaticity and brightness of the light produced by the light generator. In addition, the numbers 311, 312, 321, 322, 331, 332, 341 and 342 may also be individually controlled light generators, and do not necessa...
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The invention discloses an adjustable optical source device and an automatic optical detecting system with the adjustable optical source device which is used for irradiating the surface of an object to be detected and provides a linear scanning camera to withdraw the beams of an image of the object to be detected. The optical source device comprises a plurality of optical generators and can independently control the angles and brightness of the beams generated by each optical generator. Furthermore, the long-narrow zonary beams generated by each optical generator can irradiate the object to be detected from various projecting angles. Besides, each optical generator is formed by a plurality of red, green and blue illuminating units, thereby being capable of respectively adjusting the intensity of the red, green, and blue beams which are given off from the illuminating units so as to generate beams with various chroma. The problem of difficult accurate imaging on a rough surface of the object to be detected can be overcome by the multi-angle projecting beams; the projecting beams with adjustable chroma can be used for distinguishing the colors of a measuring target and the background on the object to be detected.
Description
technical field [0001] The present invention relates to an adjustable light source device and an automatic optical inspection system with the adjustable light source device, in particular to an adjustable light source device capable of producing multi-angle and multi-chromaticity projection light, the multi-angle and multi-chromaticity projection Light can be used to illuminate the object to be detected. Background technique [0002] Printed circuit boards are the main components of electronics, computers, and communications products. In order to meet the light, thin, short, and small product characteristics in the consumer market, and under the catalysis of high-density and high-reliability requirements, high-end printed circuit boards In the current development trend of boards, blind hole (blind hole or via) and buried hole (buried hole) technologies are mostly used. This kind of printed circuit board with blind holes and buried holes connects the internal wiring boards w...
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IPC IPC(8): G01N21/01G01N21/88G01R31/309
Inventor 汪光夏陈振庆王舜民
Owner MACHVISION INC