Telecentric lenses

These are designed with an entrance pupil placed in infinity.

Compared to entocentric lenses, only parallel principle rays are imaged through the lens. This ensures a constant magnification for the entire depth of field.

Please refer to the specifications of our standard lenses, which provide a brief insight into the lens possibilities available.

Fixed vs Variable Aperture Stop

Most lenses from Sill Optics are supplied with a variable aperture stop. This provides the advantage to adjust the luminance, resolution and depth of field of the application. Lenses with a fixed aperture stop are indicated with a blue dot. As some lenses are exposed to vibrations or fast motion, we offer the variable aperture stops to be exchanged by a fixed aperture stop. The size of the fixed aperture stop can be defined by a lens with variable aperture.


Variable working distance and magnification

Sometimes suitable lenses do not meet the desired working distance for the planned setup. In most cases adjustment to your requirements is possible. Please contact us for more information as modification of the working distance usually results in modified magnification. Thus adaption of the magnification is also possible.


Variable sensor mount

The lens mount is determined for each lens, but adjustments are possible. With a variety of available adapters or individual solutions threads and mounts for most lenses can be customized.


Scheimpflug configuration

Due to limited installation space or specific measurement circumstances, an imaging lens might be in a tilted position towards the object. To compensate the resulting blur and deformation in the image, the lens can be mounted to the sensor with a compensating angle. As the compatibility of the lens to the measurement setup depends on various factors (sensor size, viewing angle, magnification, resolution,... ), suitable adapters are offered on demand.


Glued Lenses

For lenses which are exposed to severe vibrations or are placed inside moving parts of machines a glued version is recommended.


Extended wavelength ranges

Most lenses are designed for waveband 450nm – 700nm in the visual spectrum. Thereby monochromatic applications (narrow-banded illumination, black-white sensors) and polychromatic applications (broad-banded or white illumination, color sensors) are possible.

Please note, that some particular designs are only constructed for one wavelength or a narrow range, respectively. Moreover there are special lenses for the UV- and NIR-range available. In case of special requirements please contact us for a compatibility check to your specifications.