Uniform collimated lighting with a green LED. Two-dimensional CMOS array detects the light-dark edges in the received image, and measures the dimensions.
Dual telecentric lenses are ensure only collimated light is used for imaging. Even though the distance from the object to the lenses change, the size of the image on the CMOS does not change. High precision measurement is possible.
High speed and high precision are achieved by performing pinpoint extraction and sub-pixel processing on just the contour within the specified measurement area, from the silhouette imaged on the CMOS.
Collimated light is produced without any unevenness by spreading
LED light uniformly across the complete range.
*HUD unit = High Uniform Diffusion unit
A high brightness LED is used, combining three features,
- Even Brightness Distribution
- Resistant to EMF
- Eye Safe
The optical system using a Green LED, and telecentric lenses apply
uniform LED light onto the target.
This light projects an image on the 2D CMOS and the edges between the light and dark areas are detected to allow measurement at multiple points. Moreover, the motor-less structure and longer life light source provide high durability.
Newly developed high speed 2D dedicated includes a high-speed computing CPU and two dedicated image processing DSPs. Using a total of four processors for parallel processing, TM-3000 Series allows for fast processing of 1800(images)/minute.
* HT Processor...High Speed Two Dimensional Processor
* 1800 images/min... calculated with approx. 33 ms trigger interval (default setting)
A major advantage of LED based thrubeam technology, is that the measurements are not affected by external lighting, ±0.15 μm repeatability.