08/19/2024
The ongoing development of camera technologies also requires modern lens designs.
Teledyne Dalsa, for example, offers new line scan cameras that are sensitive to four color channels. While the chips of conventional cameras only detect light in the visible range, this new camera not only has a red, blue and green channel, but also a color channel in the near-infrared range.
Conventional entocentric and telecentric lens designs are often unable to compensate the axial color shift. This results in at least one of the channels at the edge of the spectrum being blurred. So the short-wave blue and long-wave near-infrared channels in must be corrected in the lens design.
In this context, Sill Optics has developed an innovative lens with a focal length of 65 mm for 8k resolution with a pixel size of 5 µm (with a line length of 40 mm). This new development marks the beginning of a series of lenses that meet customer requirements for color correction for all four wavelengths. Two other lenses with a focal length of 28 mm or respectively 40 mm will be ready for series production and order in the end of 2024 and in the beginning of 2025.
In addition to the new series of color corrected lenses, Sill Optics also offers custom lens designs that are perfectly tailored to the individual requirements of a specific application. Furthermore, lenses from the series can be easily adapted to customized setup requirements by making small modifications, such as adjusting the camera adjusting the camera mount.
| part number | wavelength band | focal length [mm] | max. F# | working distance [mm] | recommended sensor diagonal [mm] |
| S5LPJ4465 | R, G, B, NIR | 65 | 4.0 | 500-1500 | 41.0 |
| S5LPJ4429 | R, G, B, NIR | 28 | 4.0 | 450-1200 | 41.0 |
| S5LPJ4440 | R, G, B, NIR | 40 | 4.0 | 350-1200 | 41.0 |
More information at:
