Views: 0 Author: Site Editor Publish Time: 2022-08-24 Origin: Site
The continuation of the new crown epidemic has made people more aware of the importance of the pharmaceutical and medical device industries. In the pharmaceutical and medical device industries, machine vision inspection technology is often used for quality control in high-volume manufacturing environments. For example, in the production of medical products such as syringes and vials, machine vision is often used for quality monitoring. The global COVID-19 vaccination program, which will eventually cover some 7.8 billion people, will require a large number of vaccines, which cannot be produced without visual inspection.
In the broader pharmaceutical and medical device industries, machine vision can start with inspecting raw materials, all the way to inspecting finished products and their packaging. Product inspection can include size, shape, color, integrity, and the presence of defects or foreign objects. Packaging inspections range from detecting the fill level of vials and bottles, to ensuring the filling of blister packs. The presence and location of tamper-evident seals can also be detected, as well as other details regarding package integrity. It is also important to confirm the presence of labels, as well as to read and verify 1D/2D codes and human readable text. Using a serialized QR code on each package can be traced back to production from the point of sale. Machine vision lighting is a key part of ensuring accurate and repeatable measurements while performing all of these tasks.
Lighting Considerations in Pharmaceutical and Medical Device Production
Machine vision lighting needs to provide the illumination intensity and uniformity required by the application in order to generate images with good contrast and signal-to-noise ratios to highlight features of interest. These characteristics are determined by the application itself. Factors such as the color, surface texture, shape, and reflectivity of the object being imaged all affect its interaction with light, which also determines which light source form and wavelength are best suited for a particular inspection task. The geometrical position between the object, the light source and the camera determines the orientation, the angle of illumination and the angle at which the camera collects the light.
Machine vision lighting solutions can be designed according to the unique needs of each application. Pharmaceutical and medical manufacturers require the following light sources:
1. High-speed, high-volume production, requiring precise pulses to "freeze" motion in the image.
2. High illumination intensity is required to clearly capture small target information on moving objects, such as 1D and 2D codes.
3. For lighting in clean room environment, the calorific value should be small to prevent product aging.
4. To maintain a stable level of illumination intensity and uniformity to ensure good production practice.
