The invention concerns an adjustment system for aligning optical elements and/or samples in vacuum (3) for projecting electromagnetic radiation in the terahertz range up to the range of hard X-ray radiation, consisting of at least one vacuum chamber (3), at least one mirror (3) adjustable in spatial direction and/or at least one optical element adjustable in spatial direction or at least one sample adjustable in spatial direction, with translational actuators (X1, X2, Z1, Z2, Z3) in the undeflected state (idle state) being provided for adjusting the alignment of the at least one mirror (3) adjustable in spatial direction and/or the at least one optical element adjustable in spatial direction or the at least one sample adjustable in spatial direction in a maximum of three essentially mutually perpendicular spatial directions (X, Y, Z, y, y, z). Pursuant to the invention it is provided that the at least one mirror (3) adjustable in spatial direction (X, Y, Z, y, y, z) and/or the at least one optical element adjustable in spatial direction (X, Y, Z, y, y, z) or sample within the vacuum chamber (3) is mounted in a fixed position in relation to the vacuum chamber (3), with the vacuum chamber (3) being directly or indirectly connected with the translational actuators (X1, X2, Z1, Z2, Z3) for aligning the spatial position of the mirror and/or the optical element or the sample. This setup facilitates a very compact and small design of the vacuum chamber and achieves a very high precision of the alignment.

A waterproof housing for a digital device includes a lens mount system having a threaded aperture provided on the housing, a lens arrangement including an optical lens coupled to a threaded collar, and a positioning assembly for fixedly locating the lens arrangement to the housing at a predetermined rotational engagement position of the threaded collar to the threaded aperture. The positioning assembly includes a releasable locking pin that is located in the housing adjacent to the threaded aperture, and a recess in a mounting surface of the lens arrangement for receiving a locking end of the pin when the lens arrangement and the housing are positioned at the predetermined engagement position. At this position, an optical feature of the lens arrangement is located at a predetermined desired distance from an optical plane of a camera of a digital device positioned within the housing.

A waterproof housing for a digital device includes a lens mount system having a threaded aperture provided on the housing, a lens arrangement including an optical lens coupled to a threaded collar, and a positioning assembly for fixedly locating the lens arrangement to the housing at a predetermined rotational engagement position of the threaded collar to the threaded aperture. The positioning assembly includes a releasable locking pin that is located in the housing adjacent to the threaded aperture, and a recess in a mounting surface of the lens arrangement for receiving a locking end of the pin when the lens arrangement and the housing are positioned at the predetermined engagement position. At this position, an optical feature of the lens arrangement is located at a predetermined desired distance from an optical plane of a camera of a digital device positioned within the housing.

A cooling device that enables the tip position of optical fiber to be adjusted and is able to efficiently cool an entirely of the optical fiber. This cooling device is provided with a cooling base plate, a fiber holder and an adjustment member. The cooling base plate has a recessed accommodating part. The fiber holder is disposed in the recessed accommodating part so as to be freely movable in a first direction. The adjustment member is disposed in a gap between the fiber holder and an end face of the recessed accommodating part and is movable in the first direction by moving in a second direction that intersects the first direction. The adjustment member abuts against both the end face of the recessed accommodating part and an end face of the fiber holder.

A portable magnifying assembly includes an external electronic device that may display an image. A bellows has a top end, a bottom end and a peripheral wall extending therebetween. The top end is open and the bellows are substantially hollow. The bottom end may be positioned on a support surface and the bellows may be positioned in an extended position. A magnifying plate is removably positioned on the bellows thereby facilitating the magnifying plate to magnify the image displayed on the external electronic device when the bellows is positioned in the extended position.

A portable magnifying assembly includes an external electronic device that may display an image. A bellows has a top end, a bottom end and a peripheral wall extending therebetween. The top end is open and the bellows are substantially hollow. The bottom end may be positioned on a support surface and the bellows may be positioned in an extended position. A magnifying plate is removably positioned on the bellows thereby facilitating the magnifying plate to magnify the image displayed on the external electronic device when the bellows is positioned in the extended position.

An optical element driving system is provided. The optical element driving system includes an optical element driving mechanism and a control assembly. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used for connecting to an optical element. The movable portion is movable relative to the fixed portion. The movable portion is in an accommodating space in the fixed portion. The driving assembly is used for driving the movable portion to move relative to the fixed portion. The control assembly provides a driving signal to the driving assembly to control the driving assembly. The driving assembly includes a first driving element, and the material of the first driving element includes shape memory alloy.

An optical element driving system is provided. The optical element driving system includes an optical element driving mechanism and a control assembly. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used for connecting to an optical element. The movable portion is movable relative to the fixed portion. The movable portion is in an accommodating space in the fixed portion. The driving assembly is used for driving the movable portion to move relative to the fixed portion. The control assembly provides a driving signal to the driving assembly to control the driving assembly. The driving assembly includes a first driving element, and the material of the first driving element includes shape memory alloy.

An optical element driving mechanism is provided. The optical element driving mechanism includes a first movable portion, a fixed portion, a first driving assembly, and a first guiding assembly. The first movable portion is used for connecting to a first optical element driving mechanism. The first optical element driving mechanism has a main axis that extends in a first direction. The first movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the first movable portion to move relative to the fixed portion. The first guiding assembly is used for guiding the movement of the fixed portion relative to the fixed portion.

An optical element driving mechanism is provided. The optical element driving mechanism includes a first movable portion, a fixed portion, a first driving assembly, and a first guiding assembly. The first movable portion is used for connecting to a first optical element driving mechanism. The first optical element driving mechanism has a main axis that extends in a first direction. The first movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the first movable portion to move relative to the fixed portion. The first guiding assembly is used for guiding the movement of the fixed portion relative to the fixed portion.