Long Range Illuminator (LRI)
Line Scan Illumination Solutions
High power density LINE SCAN illuminator for long distance applications in a compact light engine.
- Up to 5 meters working range
- Up to 20 W of direct optical power
- 450, 520, 640, 808 nm Wavelength
- Compact
- Electrically efficient
- Line scan camera illumination
- 2D machine vision
- Outdoor industrial inspection
- Road, Rail, Train inspection
- Hot Steel inspection
- 3D line Scan Stereo
Traditional LED Bar
Osela LRI
LRI Flexible Projection
LRI can be used with different projection orientations: superimposed, stacked or stitched and projected at different angles. Intensity profile can be compensated for image plane uniformity.
Superior Image Quality
The LONG RANGE ILLUMINATOR uses a specialized optical technology in order to project laser illumination with a significantly lower speckle noise factor vs common laser projection systems. This results in the ability to capture LED like images and resolve fine features at any working distance. A comparison can be seen below of a standard laser image vs one taken with the LRI.
High Power Density at Long Distances
For working distances from a few hundred millimeters the Osela’s Long Range Illuminator provides high optical power in the region of interest clearly shown in the graphs below. LED based systems optical power drops off drastically with distance while the LRI holds its power irrespective of distance where power density is simply a function of illuminated area. For long range applications there is no better alternative available.
The following graphs show power density [W/m2] of the LRI illumination in the working range for the Short, Mid, and Long Range models considering different fan angles of the laser line projection. The yellow shaded regions represent the very limited illumination potential of competing LED based systems.
Effective Line Length and Fan Angle
Osela’s Long Range Illuminator has the unique advantage of having a large working range with flexible line lengths. The fan angle projection allows for generating extended illumination areas while maintaining the compact mechanical footprint of the LRI. The Long Range Illuminator can be used at distances starting at the point source (Zs) of the fan angle and onwards as shown in diagram below. The line length can be calculated
Line Thickness
Unlike LED Illumination with very narrow working range [yellow shaded area on graph below], the LONG RANGE ILLUMINATOR’s line thickness increases minimally over working distance thereby holding its power density over a long range. The power profile along the cross-section is also very uniform allowing for ease in camera alignment.
Intensity Profile Along Illumination Lenght
The LONG RANGE ILLUMINATOR unique optical system provides high intensity uniformity across the length. The intensity uniformity profile can be custom shaped to customers request (i.e. Cosine Corrected, Power Sloped), ask your sales representative for more information.
Interfacing with Laser
The LRI comes standard with RS485 Digital Communication capabilities. It allows users to retrieve key information such as real time health monitoring, current, output power and temperatures. Users can also set output power, modulation logic, dimmer curve are temperature cutoff.
