Abstract: Surveillance networks are used to observe large areas, like public places, streets, public buildings or private houses, privates premises etc. The surveillance networks often comprise a plurality of surveillance cameras. Such surveillance cameras should be small, robust, trouble-free and have low-maintenance requirements.

Abstract: Surveillance cameras are for example used in surveillance networks for observing areas of public places, schools, universities, private households, prisons etc. Usually such a surveillance networks comprises a plurality of cameras and a surveillance control center, whereby the cameras are connected by public or private network with the surveillance control center, so that images, captured y the cameras can be transferred to the surveillance control center. A camera (1) comprising a motorized object lens adjusting module (3) for adjusting the object lens or parts thereof, an image processing module (4) for processing the images captured by the camera (1), an interface module (5) for providing Signal interfaces and an external housing enclosing the modules (3, 4, 5), is disclosed, with an internal assembly frame (8) for holding the said modules (3,4,5) as a unit (8) independently from the external housing.

Abstract: The invention concerns a Back focus adjusting module (3) for a camera comprising a supporting structure (6), a linear actuator (11) with a motor (10), a gear mechanism (8) and a component carrier (7), whereby the gear mechanism (8) converts a rotational movement of the motor (10) into a linear motion and displaces the component carrier in a linear direction (9), a spring component (2) for biasing the component carrier (7) in a direction opposite to the linear direction (9), a slider (30) with at least one optical filter (31a, b), whereby the slider (30) can be (1) slid in a guiding slot (32) of the back focus adjusting module (3) between at least two sliding positions in a sliding direction (33), whereby the spring component (2) provides a guiding surface (34a, b, c) of the guiding slot (32) for the slider (30).

Abstract: Surveillance networks are used to observe large areas, like public places, streets, public buildings or private houses, privates premises etc. The surveillance networks often comprise a plurality of surveillance cameras. Such surveillance cameras should be small, robust, trouble-free and have low-maintenance requirements.

Abstract: The invention concerns a Back focus adjusting module (3) for a camera comprising a supporting structure (6), a linear actuator (11) with a motor (10), a gear mechanism (8) and a component carrier (7), whereby the gear mechanism (8) converts a rotational movement of the motor (10) into a linear motion and displaces the component carrier in a linear direction (9), a spring component (2) for biasing the component carrier (7) in a direction opposite to the linear direction (9), a slider (30) with at least one optical filter (31a, b), whereby the slider (30) can be (1) slid in a guiding slot (32) of the back focus adjusting module (3) between at least two sliding positions in a sliding direction (33), whereby the spring component (2) provides a guiding surface (34a, b, c) of the guiding slot (32) for the slider (30).

Abstract: Surveillance cameras are for example used in surveillance networks for observing areas of public places, schools, universities, private households, prisons etc. Usually such a surveillance networks comprises a plurality of cameras and a surveillance control center, whereby the cameras are connected by public or private network with the surveillance control center, so that images, captured y the cameras can be transferred to the surveillance control center. A camera (1) comprising a motorized object lens adjusting module (3) for adjusting the object lens or parts thereof, an image processing module (4) for processing the images captured by the camera (1), an interface module (5) for providing Signal interfaces and an external housing enclosing the modules (3, 4, 5), is disclosed, with an internal assembly frame (8) for holding the said modules (3,4,5) as a unit (8) independently from the external housing.