Sill Optics is one of only a few mid sized companies in Germany specialized in the production of optical components. Its philosophy “100% Made in Germany” is maintained throughout its own production and supplier chain.
Lenses for Machine Vision
For over 40 years Sill Optics has been producing telecentric lenses. First in the form of profile projection lenses and since 1989 in the current form for digital cameras.
The product portfolio of Sill Optics ranges from simple collimation- and focusing optics to beam expanders to telecentric and non-telecentric scan lenses. We cover thereby the complete wavelength range from 193 nm to 1980 nm. Mainly applications with solid state lasers around 1064 nm and its harmonic generations are covered. Furthermore, we provide lenses designed for disc lasers and fiber lasers in the range of 1030 nm to 1090 nm, as well as diode lasers from 800 nm to 980 nm or 900 nm to 1070 nm. Additionally many of our lenses, beam expanders and lens systems are optimized for the use with short pulse lasers (picosecond range) and ultra-short pulse lasers (femtosecond range). Lenses are also offered for very short wavelengths around 193 nm and 248 nm, but also for more long-wave radiation in the near and mid infrared regime (1550nm and 1980nm). A large selection of multispectral scan lenses allow monitoring through the used optics or use of multiple wavelengths and complete the range of our scan lens product range.
In addition we offer custom made systems of special ƒ-theta lenses up to complex opto-mechanical systems. Our resources comprise both extensive experience in optical design with Zemax and mechanical engineering with SolidWorks. Production with modern technologies from single prototypes up to medium quantities are possible to fulfill exceptional requirements.
For online inspection systems we successfully introduced color corrected ƒ-theta lenses for 1064 nm and 532 nm to the market. Color correction offers usage of one lens for several manufacturing steps at the same time.
In addition, we offer color corrected ƒ-theta lenses designed for confocal microscopy applications optimized for a wavelength range from 450 nm to 650 nm and a lens optimized for 355 nm and 1064 nm. The focal lengths and working distances are identical for several wavelengths, resulting in identical image fields for the laser and inspection wavelength respectively for a whole wavelength range.
All optical elements of beam expanders consist of fused silica and provide stable and reliable performance even with high average power or laser with high peak power. Because of the high power density (especially at the entrance lens element) we advise our low absorption coating as standard product.
For each magnification ratio, at least one beam expander without internal ghost is available offering stable working conditions even at high power and small entrance beam diameter.
Our beam expanders are available in diverse variations and additional special functions. Please note the following listing as an overview:
Aspheres offer the great advantage to accomplish imaging tasks with one optical element where lens systems were needed otherwise.
Main advantages of aspheres are:
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).
For more than 40 years, Sill Optics has been designing, producing and offering telecentric lenses for machine vision. Based on the success of profile-projection lenses, which are still available, a wider range of telecentric lenses for modern imaging processes has been developed to meet demanding requirements. Furthermore our product range has been extended by lenses with coaxial illumination, entocentric macro optics, wide-angle lenses and telecentric condensers.
Sill Optics’ philosophy is to develop and produce completely at their own site in Germany. Our flexibility, besides high quality, is also to offer customized solutions, modifications and designs on short notice.
Our catalog presents only our most common products. In addition we offer customized systems of special telecentric or entocentric lenses up to complex opto-mechanical systems. Our resources comprise both extensive experience in optical design and mechanical engineering. Production with modern technologies from single prototypes up to medium quantities is possible to meet highest demands.