Nowadays, electronic products tend to be multi-functional, intelligent and miniaturized, from consumer electronics to industrial equipment, military weapon systems, etc., as long as there are electronic components such as integrated circuits, the electrical interconnection between them must use PCB. With the progress of information technology and the rapid development of industry, chip technology technology has been improved, high-density BGA, chip level packaging and organic laminate material as the substrate of multi-chip module packaging printed board has become a hot market, mainly due to its miniaturization, thin and light structural design, taking into account its heat resistance and heat dissipation, and can adapt to the needs of high frequency and high speed communication.

Advantages of spectroscopic confocal displacement sensor:

1, high resolution, independent intellectual property rights, not subject to foreign export control resolution restrictions, vertical instrument master core technology, according to the actual application needs of customers, flexible modification and adjustment design.

2, the measurement Angle is large, φ82mm lens to achieve the design Angle of mirror ±60°, non-mirror surface ±88°; Both set world records.

3, the background interference is small, the patented separation channel fiber, to solve the problem that has plagued the industry for decades, more than 50% less than the traditional fiber interference.

4, high light intensity, patented prism spectrometer products, linearity improved by more than 200%, light energy utilization improved by more than 200%.

5, the specifications cover a wide range, has covered 0.1~25mm range, from the range of 0.05~50mm can be customized. Minimum diameter 3.8mm.

6, good stability and high reliability: optical part: measuring lens lens all glue fixed death, good shock resistance.

Mechanical part: The controller comes with a shock-absorbing structure, the core module is flexibly suspended in the air, reducing external vibration, good temperature stability and small drift.

Optical fiber part: The connector is designed to prevent stupidity. When the connector is not aligned with the slot, the thread will not be locked to prevent measurement errors caused by not being inserted in place.

The market prospect of spectral confocal sensors used in PCB inspection

The precise measurement of PCB flatness, thickness and three-dimensional profile has become a technical problem in the industry, especially in the process of PCB surface gluing, solder, component placement, etc., the materials are both fine and complex. In this context, high-precision spectral confocal sensors that adapt to light reflection and can solve a variety of complex scene applications came into being, giving PCB appearance detection more sensitive "visual" perception and more intelligent data processing "brain".

In the process of quality inspection, in addition to requiring no deviation in appearance size, tight packaging, and clean plate edge layout, it is also necessary to ensure that the position of the wire through the hole is normal, the silk screen mark is clear, and the solder is uniform. In terms of PCB wire production, today's fine line process, the industry can basically do 40-60μm line width, when the wire appears more subtle appearance defects, such as short circuit, open circuit, copper wire exposure, copper foil float away, wire repair, etc., how to accurately identify these precision characteristics? At this time, optical detection equipment is needed.

The spectral confocal sensor adopts non-contact measurement and detection technology, which can avoid the wear, deformation or foreign body of the product appearance compared with the traditional contact detection method. Spectral confocal technology involves the field of 2D and 3D visual inspection, which can accurately identify the PCB outline size, contour and thickness, detect the solder pad position defects, BGA, pins, solder joints and components are missing, etc., and has broad market application prospects in the PCB industry.