Uniform Line
Highly characterized laser line projection technology optimized for your application
At Osela, we understand that a laser line is not just a laser line, as each application and system has its own specific illumination requirements for optimal performance. Our unique capabilities and expertise in laser beam shaping allows us to manufacture system specific laser line projectors. In-house lens manufacturing gives us tight control over performance and quality with industry leading laser line characterization techniques.
Line Uniformity
Our in-house optics manufacturing allows us to create laser line projectors with very specific power distributions. From highly uniform lines to cosine corrected distributions to purposely cambered profiles for incident angle projections.
Line Straightness
Our characterizations techniques and optical train design allow for delivering repeatable laser straightness performance. With specifications down to < 0.03% deviation, we can meet the highest precision requirements. We can also manufacture according to straightness profiles with specific degrees of polynomial for easier software compensation.
Focusing
Decades of experience in machine vision have shown us the importance of having uniquely optimized focusing performance for each application and system. We offer 10+ different focus options which can be tailored for best line thickness vs Depth of Field vs Gaussian performance in a given working range. In-house 3D focusing and measurement setups allow us to optimize the focusing performance of each laser to guarantee repeatability for your system. We have also developed simulation software that can be used to test each focus options performance in any condition (osela.solutions – contact us for access.)
Expertises
Uniform laser line
Uniform intensity over the line length is a must for many machine vision and bioinstrumentation applications. Compared to other line generators such a cylindrical lenses and micro lens array, the Osela single line and multi lines products are based on refractive field mapping. This technology provides the best uniformity without high ripple noise and can be readily optimized for safety class.
Focusing and Depth of Field
In the world of 3D imaging, one of the most important characteristics of the illumination is the focusing performance and its related depth of field. Osela offers 10+ different focusing options that can be tailored for the optical requirements of a specific system. We have developed setups that allow to highly characterize the laser beam, allowing for optical parameters such as Gaussian fit to be optimized over customer’s working distance and working range.
To find the right focusing configuration for your needs, please call us for access to our Online Laser Beam Simulator.
Straightness
Line straightness is an important parameter for many 3D machine vision applications. Straightness can be defined as the deviation of the centroid of the laser line along its length. Osela’s capability to measure and characterize straightness aids our customers to optimize their vision systems for high accuracy. Our designed platforms and in-house manufacturing techniques gives us ultimate flexibility to optimize and control the straightness specification precisely, including profiles with specific degrees of polynomial for easier software compensation.
Telecentric laser projection
Telecentric laser lines provide many advantages for high accuracy machine vision applications. The collimated nature of the laser line reduces potential object occlusion on an image plane (shadowing), allowing for maximum data acquisition. Osela’s TLP technology also creates uniform line thickness distribution down to micron levels for highest resolution. Hypocentric laser lines are also available to increase scattering performance for highly reflective materials.
Field corrector
Standard laser line projections often create an uneven line thickness distribution from center to edge (bowtie effect). To overcome this issue, Osela has developed field corrector optics that maintains an even line thickness throughout its length. The small form factor of this corrector option allow for ease of integration into our Compact and Streamline platforms.
Clean beam
Laser beam propagation from direct diode lasers often creates unwanted secondary lobes. To overcome this issue, Osela has developed a clean beam technology, which propagates the beam with a high Gaussian fit, suppressing any side lobes. This technology can be expanded into our laser line platforms, for optimizing focusing performance.
Cosine Correction
The advantage Osela’s in-house optical manufacturing capability allows for maximum flexibility in creating custom laser line power profiles. For applications that require edge of image field compensation, cosine corrected power distributions can be precisely specified and manufactured for optimal illumination on cameras in varied fields of view.
Technology – Related products
