Mini lens 35mm - Accessory for sensors 6GF9001-1BH01

Mini lens 35mm - Accessory for sensors 6GF9001-1BH01 – Siemens – 4019169135818: Mini lens 35mm 6GF9001-1BH01 color black, lens for revised protective housing. Lenses with a small focal length are called wide-angle lenses, they can also be used at short working distances, but they have strong distortions in the image. At a given distance they have a large field of view. Lenses with a long focal length are called telephoto lenses, they have a high magnification but cannot be focused at close range, so macro lenses are used, which are focused with the help of large extensions or extension tubes. At a given distance they have a small field of view. With telecentric lenses, at least the object-side beam path is almost parallel (parallel projection). This means that objects at different distances are displayed in the same size. However, only objects that are smaller than the lens diameter can be imaged. It is not possible to adjust the focus range with these lenses. With the help of optical filter glasses, the optical properties can be restricted in order to eliminate disturbances in the image. Color filters narrow the spectral range, gray filters the light intensity and polarization filters the transmission level. Either the internal thread or the flange on the front of the lens can be used to attach such filters. The mount of the filter glass is structurally adapted to the lens (mini lens 35mm, 1: 1.6 PENTAX C3516-M (KP) with fixed focal length, aperture and FOCUS adjustable D=29.5mm, L=41.4mm)