A cooling sub-assembly for cooling a heat dissipating electronic device. The sub-assembly may include a vapor chamber, a peltier element and a coldplate placed on top of each other forming a stack such that the peltier element is sandwiched between the vapor chamber and the coldplate. The vapor chamber has a head facing the peltier element, a foot for facing the heat dissipating electronic device, and a wall extending between the foot and the head. The area of the head is larger than the area of the foot.

The invention relates to a subassembly (1) for an objective (10), in particular for a long and slim optical image transmission system, for example an endoscope, an objective (10) and an optical image transmission system, as well as methods for manufacturing a subassembly and an objective. The subassembly (1) comprises a prism (2) and an aperture element (3), wherein the prism (2) and the aperture element (3) are fixedly connected to each other, preferably by means of a putty or via direct bonding.

A light scanning system includes a mirror device, a magnet, a temperature sensor, and an arithmetic part. The arithmetic part generates first and second current signals based on a first target deflection angle and a first target frequency, a second target deflection angle and a second target frequency, an operating temperature, first data for correcting a change in a deflection angle of a mirror with respect to a change in a frequency of a current signal input to each of first and second drive coils, second data for correcting at least one of a shift of the mirror swinging with a first axis from a Y-axis and a shift of the mirror swinging with a second axis from an X-axis, and third data for correcting a change in a deflection angle of the mirror with respect to a change in the operating temperature.

An image compensation device and a prism carrying mechanism thereof. The prism carrying mechanism comprises a base and a pair of prism carrying members. The base comprises a base body, a light passing hole disposed at the base body, and a plurality of first sliding assembling parts integrally formed on the same side of the base body. Each of the prism carrying members comprises a carrying member body, a prism assembling part disposed at the carrying member body and corresponding to the light passing hole, and a plurality of second sliding assembling parts integrally formed on the same side of the carrying member body. The prism assembling parts of the pair of prism carrying members are oppositely and alternately disposed in an axial direction. The plurality of second sliding assembling parts are slidably assembled to the plurality of first sliding assembling parts respectively.

A reflecting module includes: a housing; a rotation holder supported by the housing, and including an inclined seating portion; and a reflective member disposed on the inclined seating portion. The rotation holder is rotatable with respect to a first axis perpendicular to an optical axis of the housing, and with respect to a second axis perpendicular to the optical axis and the first axis. The first and second axes cross an inside of a rectangular parallelepiped having a surface coinciding with a surface of the reflective member, and the reflective member interfaces with the seating portion along a diagonal plane within the parallelepiped.

An optical module for a machine for machining workpieces and/or for producing molded bodies by way of location-selective solidification of material powder into contiguous regions by a laser beam includes a housing for releasably fastening the optical module to the machine and a collimation optics changer releasably arranged in the housing, having at least two collimation optics which can be moved into a beam path of the laser beam for collimating the laser beam. The collimation optics changer has a mechanism for automatically changing the collimation optics.

A piezoelectric driving device includes: a driving portion to be brought into frictional contact with an object to be driven, which is moved with respect to a fixed body; and at least two piezoelectric portions, which are formed integrally with the driving portion, are arranged on a predetermined plane with the driving portion being sandwiched between the at least two piezoelectric portions, and are configured to be bent with respect to the predetermined plane when voltages are applied to the at least two piezoelectric portions, wherein outer edges of entirety of the at least two piezoelectric portions are fixed to the fixed body.

An optical element driving mechanism is provided, including a fixed part, a movable part and a driving assembly. The fixed part has a main axis, includes an outer frame and a base. The outer frame has a top surface and a sidewall. The top surface intersects the main axis. The sidewall extends from the edge of the top surface along the main axis. The base includes a base plate intersecting the main axis and securely connected to the outer frame. The movable part moves relative to the fixed part, and connects to an optical element having an optical axis. The driving assembly drives the movable part to move relative to the fixed part. The main axis is not parallel to the optical axis.

A folded camera that includes two light folding elements such as prisms and an independent lens system, located between the two prisms, which includes an aperture stop and a lens stack. The lens system may be moved on one or more axes independently of the prisms to provide autofocus and/or optical image stabilization for the camera. The shapes, materials, and arrangements of the refractive lens elements in the lens stack may be selected to capture high resolution, high quality images while providing a sufficiently long back focal length to accommodate the second prism.

A space optical instrument is disclosed including a primary mirror having an optical axis and including a first face, referred to as the front face, oriented towards an observed area, and a second face opposite to the first, referred to as the rear face, the optical instrument further including a thermal stabilization device for the primary mirror, comprising a thermally conductive wall extending around the optical axis (O) on the front face side of the primary mirror towards which this face is oriented. The thermal stabilization device further includes a temperature regulating device for the circumferential wall that is capable of using the measurement of an incident heat flux on the mirror, and adapting the temperature of the circumferential wall according to the measured incident heat flux, in order to keep the front face of the mirror at a constant temperature.