摘要:
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).
摘要:
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. Subject-matter of the invention is a linear actuator (8) for a linear motion of a component of a camera (1), the linear actuator comprising a supporting structure (6), a motor (10) arranged on the supporting structure for generating a rotational movement, a component carrier (7) for carrying the component and for performing the linear motion relative to the supporting structure, a gear mechanism (11) for transmitting the rotational movement, whereby the last gear of the gear mechanism before the component carrier is a transfer gear (20), whereby the transfer gear comprises a guide way (23a, b, c) extending in rotational direction of the transfer gear with a slope along the guide way whereby the component carrier is coupled with the guide way by resting means (24a, b, c), so that the component carrier is displaced in the linear direction (9) by a rotational movement of the transfer gear due to the slope of the guide way.
摘要:
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).
摘要:
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. Subject-matter of the invention is a linear actuator (8) for a linear motion of a component of a camera (1), the linear actuator comprising a supporting structure (6), a motor (10) arranged on the supporting structure for generating a rotational movement, a component carrier (7) for carrying the component and for performing the linear motion relative to the supporting structure, a gear mechanism (11) for transmitting the rotational movement, whereby the last gear of the gear mechanism before the component carrier is a transfer gear (20), whereby the transfer gear comprises a guide way (23a, b, c) extending in rotational direction of the transfer gear with a slope along the guide way whereby the component carrier is coupled with the guide way by resting means (24a, b, c), so that the component carrier is displaced in the linear direction (9) by a rotational movement of the transfer gear due to the slope of the guide way.
摘要:
A motor assisted movement assembly 2 is provided comprising a motor arrangement 3, which motor arrangement 3 may assist a manually controlled movement of a first structural element 5 relative to a second structural element 6. A motor element 3a of the motor arrangement 3 is adapted to detect a manual indication of a desired movement of the second structural element 6 relative to the first structural element 5 with the motor arrangement 3 being adapted to assist, e.g. support the movement by providing an additional force.
摘要:
A steering system (30) comprises two radially oppositely arranged drive wheels (1; 3) for steering a tubular object (5) positioned between the drive wheels (1; 3). The drive wheels (1; 3) each have a wheel rotation axis (40; 42) and each include a plurality of rollers (7) distributed around the wheel rotation axis (40; 42). The rollers (7) are rotatably arranged, each roller having a roller rotation axis (44) and an outer drive face (58) concavely vaulted in a direction corresponding to its roller rotation axis (44). The roller rotation axis (44) is obliquely oriented in relation to the wheel rotation axis (40; 42) and the rollers (7) of each drive wheel (1; 3) form together a steering periphery for the tubular object (5). The steering system enables continues rotation of a tubular object without danger that the object will lose the contact with the rollers. The steering system (30) may be incorporated in a catheter system which comprises a catheter (5).
摘要:
A guidance chain for guiding a connection line, such as a cable, electrical cable, fiber glass cable, water line, gas line or fluid line, between parts of a medical diagnostic apparatus which are moved relative to each other, includes plural chain elements, where consecutive chain elements are moveable relative to each other about a respective imaginary or real rotation axis for realizing a folding movement of the guidance chain. The guidance chain is constructed such that it has a pre-set curvature in an unfolded state, and the radial extensions of the rotation axes are originating from substantially the same point in a folded state of the guidance chain.
摘要:
A precision apparatus has a movable member (A), moving in a bridge element (2) arranged perpendicular to the movement of the moveable element. The bridge element comprising an air slit (S) and a exhaust (E). The bridge element (2) comprises a primary air duct (21), substantially extending along the length of the bridge element, which primary air duct is provided with apertures (21a, 21b), The apertures (21a, 21b) are evenly distributed along the length of the bridge element, and form an air flow passage to a secondary air duct (22), also substantially extending along the length of the bridge element Through the secondary air duct in operation air is drawn through the air slit (S).
摘要:
A lithographic projection apparatus includes conduits which supply utilities to components in a vacuum chamber such as object tables and/or associated motors and/or sensors. The conduits are shielded from exposure to the vacuum by conduit conducts having at least the same number of degrees of freedom as their associated object table.
摘要:
A steering system (30) comprises two radially oppositely arranged drive wheels (1; 3) for steering a tubular object (5) positioned between the drive wheels (1; 3). The drive wheels (1; 3) each have a wheel rotation axis (40; 42) and each include a plurality of rollers (7) distributed around the wheel rotation axis (40; 42). The rollers (7) are rotatably arranged, each roller having a roller rotation axis (44) and an outer drive face (58) concavely vaulted in a direction corresponding to its roller rotation axis (44). The roller rotation axis (44) is obliquely oriented in relation to the wheel rotation axis (40; 42) and the rollers (7) of each drive wheel (1; 3) form together a steering periphery for the tubular object (5). The steering system enables continues rotation of a tubular object without danger that the object will lose the contact with the rollers. The steering system (30) may be incorporated in a catheter system which comprises a catheter (5).