Application Background
As consumer electronics become thinner, semiconductor devices more integrated, and new energy components more precise, dispensing processes now require micron-level positioning accuracy. At the same time, dispensing substrates are increasingly diverse, including transparent materials, highly reflective surfaces, and various metals.
These conditions create challenges for traditional positioning methods. Chromatic confocal technology provides a more reliable solution by using the wavelength information of reflected white light to obtain precise distance values without contacting the target surface.
Measurement Principle
In chromatic confocal measurement, different wavelengths focus at different heights after passing through a dispersive optical system. By analyzing the reflected wavelength, the sensor calculates the distance to the measured surface with high precision.
This non-contact method supports micron-level height positioning and can adapt to complex dispensing materials, helping solve issues such as unstable alignment, inconsistent glue height, and difficult measurement on transparent or reflective surfaces.
LightE Solution
LightE point chromatic confocal sensors provide high-resolution displacement measurement for dispensing guidance. The system can measure dispensing start and end positions, glue height, adhesive layer thickness, overflow height, and surface height differences before and after dispensing.
By integrating LightE sensors into dispensing equipment, customers can improve alignment accuracy, process consistency, and inspection efficiency while reducing the risk of contact damage.
