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Different aspects of electronic pens

A miniaturized optical component (36) for a camera pen has the shape of a plate and comprises at least two non-overlapping radiation-transmitting sections: an imaging section (36′) configured to transmit an image of an object plane, and an illuminating section (36″) configured to transmit illuminating radiation towards the object plane. Passive optical elements may be incorporated in the component to provide the imaging and illuminating sections, e.g. an image-generating surface structure, an illumination-controlling surface structure, a radiation filter, a stray light shield, and an aperture stop. These optical elements may be provided as well-defined surface structures and layers on a plate substrate. The optical component may be manufactured as a wafer structure comprising a plurality of these optical components. A camera housing (22) may be provided with a first mounting structure (56) for the optical component (36), a second mounting structure (64) for an image sensor (11) configured to detect the image, and a third mounting structure (66) for a radiation source (13) configured to generate the illuminating radiation. An elongate guide pipe (24) for receiving a stylus (8) may be received in and joined to an elongate recess (28) in an exterior wall portion of the camera housing (22).
Owner:ANOTO AB

Dual-rotor electric traction motor

InactiveUS7466053B1Simple , reliable and easily accessibleSimple and reliable and easily accessibleMagnetic circuit rotating partsDC commutatorTraction motorMagnet
An inner rotor (21) is arranged as a motor field, including permanent magnets (25) embedded in an inner rotor core (24) and an inner rotor shaft (26) coupled with the inner rotor core. An outer rotor (22) is arranged as a motor armature, including a hollow armature core (36), plurality of windings (37), two side flanges (38, 39), and an outer rotor shaft (40) coupled with one of the side flanges. The inner rotor is rotatably supported inside the outer rotor, and both rotors are rotatably supported inside a stationary motor enclosure (23). Electric current is conducted to the windings of the armature via brushes (58) and sliprings (59). The interaction between a revolving electromagnetic field of the outer rotor and the permanent magnetic field of the inner rotor propels both rotors to rotate in opposite directions. Two axial fans (82, 83) integrated with the outer rotor side flanges and two axial fans (95, 96) coupled with the inner rotor shaft work in series and produce continuous internal close-loop air circulation between both rotors and between the outer rotor and the motor enclosure, for improving the rate of heat transmission from the rotors to the motor enclosure. If the outer rotor is selectively immobilized, the two inner rotor axial fans produce the internal close-loop air circulation.
Owner:RADEV VLADIMIR
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