Transmission inspection in bright field
or
Reflectivity inspection of flat surface
The TSXXX imaging laser scanners consist of a transmitter unit and a receiver unit. They can be used either for defect and dimensional inspection of transparent test specimens or for inspection of flat surfaces. These tests differ only in the arrangement of the specimen the and scanner components as well as the parameterization. In principle, they can be combined if necessary (e.g. with partially reflective surfaces). Transparency, gloss or refectance profiles and their defects and anomalies are imaged in a very large depth of field.
Transmission test principle
Principle of the reflection test
- Development, control and optimization of production processes
- Quality control (in goods issue or goods receipt)
- Transparent (transmission > 10%) clear or colored articles with low refractive powers (flat glass, bar glass, windscreens) also with very large depth expansion (e.g. 300 mm for windscreens)
- Plan, shiny and reflective surfaces
- Imaging telecentric laser scanners
- Evaluation of transmission, gloss or reflectance profiles
The scanners provide line scans at their image interface (just like line scan cameras). The following quantities can be determined from the images:
- Anomalies in the transmission or reflectance / gloss profiles (by comparison with images of good samples)
- Sizes and accumulations of the defects or anomalies
- Extremely fine defects (<laser beam width)
- Dimensions
depending on the scanner type down to < 10 µm
Sacn line of from 25 mm to basically not limited limited. Scanners with an inspection range of 1400 mm have already been realized with modules with overlapping scan lines.
3R
- Transmitter unit (emits the laser beam)
- Receiver unit
- 24V power supply
- Extremely large depth of focus (compared to cameras)
- Robust against object displacement
- Little effort for adjustment
- Image interface (GiG-E or CameraLink)
- RS-232 interface for parameter setting
OPOS Scanner Player (OSP) for acquiring images and configuring the scanners. A complete evaluation software (Purity) with process line interface is available from our partner Fraunhofer IOSB.
Defects in laminated glass panes (point defect, fracture, imprint, fluff)
Send us your samples for a first free test or let us convince you with a device demonstration in your house!
We would also be glad to adapt the sensors to your application or develop new functions.
Patents
- M. Hartrumpf, "Laserscanner-Meßsystem"; DE19806288A1
- M. Hartrumpf, "LASER SCANNER MEASUREMENT SYSTEM"; EP1056987A1
- M. Hartrumpf, "Laser Scanner Measurement System"; US6858836B1