phone membrane material constitutes a critical component of backlight module,
which is designed mainly to improve front lightness (also called or axial
lightness) of LCD module.
As the requirement for backlight module of
mobile phones gets increasingly strict, the requirement for selection of
optical membrane material and dimension control becomes increasingly strict.
Inspection of appearance sizes of mobile phone
membrane material, such as width, length, angle, R angle, etc.
Due to the large size of mobile phone membrane
material and higher requirement for precision, on the one hand, it is
impossible to use contact measurement during measurement practice, and on the
other hand, projectors are applied in most traditional measurement methods to
directly measure appearance dimension and other geometric quantities. The
indistinct image capturing on frame of membrane material makes it difficult to
ensure the required error range of membrane materials, especially that burrs
during processing will influence dimension measurement at the edging chamfer.
TZTEK image measuring instrument applies high-resolution
digital camera which has totally surpassed ordinary projector in terms of image
capturing. The functions of automatic capturing and burr removal make the
capture process simpler and faster, and can also avoid effects of burrs on