Laser Optics – Aspheres

Aspheres offer the great advantage to accomplish imaging tasks with one optical element where lens systems were needed otherwise.

Main advantages of aspheres are:

• less spherical aberrations
• less weight
• increased transmission
• no internal ghosts

The combination of high purity fused silica and low absorption coatings decreases the thermal induced shift of focal length and working distance.
Another application of an asphere is beam shaping with respect to the intensity distribution or the phase. A typical conversion is the change of a Gaussian profile into a top-hat profile. For material processing, this form has the advantage of a more homogeneous removal of surface material, steeper borders between removal zone and surrounding material and a resulting smaller heat affected zone (HAZ).
The capability of Sill Optics MRF machines allows production of aspheres up to diameter 200 mm. Measurement setup (interferometric wavefront test, tactile and optical 3D profi lometry) enables us to
ensure a surface quality of 0.15 μm PV(fWD) and RMSi < 0.025 μm depending on geometry. Even sagittal heights z(r) up to 26 mm are measurable enabling the production and test of very steep radii at certain diameters.
Our range of products covers unmounted and mounted precision aspheres out of fused silica with focal lengths from 20 mm to 400 mm, which are usable for focusing and collimation.

For more detailed information, please contact us at any time! Contact Us  

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Condensers and Accessories

Within our telecentric imaging lens portfolio, we have also developed LED condensers that complement our offerings. These condensers serve as collimated backlights for high-precision measurements in machine vision applications. Our main expertise lies in optical subassemblies that ensure the emitted light exhibits high homogeneity and parallelism.

Condensers	Mounting
Accessories for standard lenses	Accessories for special lenses

In addition to the condensers available in our portfolio, we can provide other sizes (up to an illumination diameter of Ø150 mm and offer modifications or custom developments upon request. We are committed to meet your specific requirements and providing tailored solutions for your imaging needs.

For more detailed information, please contact us at any time! Contact Us  

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• With protective glass mount

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