Provided is a focusing device that includes a substrate and a plurality of scatterers provided at both sides of the substrate. The scatterers on the both sides of the focusing device may correct geometric aberration, and thus, a field of view (FOV) of the focusing device may be widened.

Provided is a focusing device that includes a substrate and a plurality of scatterers provided at both sides of the substrate. The scatterers on the both sides of the focusing device may correct geometric aberration, and thus, a field of view (FOV) of the focusing device may be widened.

A mobile astronomical observation apparatus includes transport wheels, a bottom plate, side walls, fixing support parts, an astronomical observation member arranged in a receiving space when the mobile astronomical observation apparatus is in an observation mode, a moving part, a relatively-fixed body movably being coupled to the moving part, a ground-fixing rod being coupled to the relatively-fixed body, and a vibration-resistant member.

An optical system for a microscope for imaging an object includes: a telescope system having an optical correction unit, which is adjustable in order to correct a spherical imaging aberration, and having a zoom optical unit, which is adjustable in order to adapt a magnification of the telescope system to a ratio of two refractive indices, one of which is assigned to an object side and an other of which is assigned to an image side, within a predetermined magnification range. The telescope system is telecentric over an entire magnification range both with respect to the object side and with respect to the image side by the zoom optical unit contained in the telescope system.

A reflex sight includes an elongated sight housing having an outer tube and an inner tube defining a light channel with an optical axis, wherein the inner tube is pivotally secured within an end of the outer tube and has an end section forming an outer perimeter section, which is provided with separate convex sections. The separate convex sections of the inner tube are arranged to fit into the separate concave support sections in the outer tube, wherein the end section of the inner tube is pivotally received within the end section of the outer tube.

A reflex sight includes an elongated sight housing having an outer tube and an inner tube defining a light channel with an optical axis, wherein the inner tube is pivotally secured within an end of the outer tube and has an end section forming an outer perimeter section, which is provided with separate convex sections. The separate convex sections of the inner tube are arranged to fit into the separate concave support sections in the outer tube, wherein the end section of the inner tube is pivotally received within the end section of the outer tube.

A viewing device captures one or more images from a spotting scope. A communication device transmits the images to one or more remote display devices. A self-aligning mount allows the viewing device to be automatically aligned with an optical pathway of the spotting scope as it is attached thereto. An adjustment ring allows focusing adjustments to be made to the spotting scope, even after the viewing device is attached. With the viewing device, a user need not physically move to peer through the spotting scope, since images from the spotting scope may be remotely viewed at one or more remote display devices. In addition to spotting scopes, the viewing device may be used with other optical devices, such as binoculars, telescopes, rifle scopes, microscopes, and other optics.

A Bi-spectral Korsch-type anastigmat telescope has an optical axis and a visible channel comprising a concave first mirror, a convex second mirror and a concave third mirror and a visible detector that is sensitive in a visible band, the mirrors being arranged so that the first mirror and the second mirror form, of an object at infinity, an intermediate image located between the second mirror and the third mirror, the third mirror forming, from this intermediate image, a final image in the visible focal plane of the telescope, wherein the visible detector is placed, an infrared channel comprising first and second mirrors in common with the visible channel, a third IR mirror, a fourth IR mirror, and an IR detector that is sensitive in an infrared band, the third and fourth IR mirrors being configured to form, from the intermediate image, a final image in an IR focal plane.

An actuator system includes a frame configured to remain stationary relative to a carriage within the frame and connected to the frame by a flexure assembly configured to constrain the carriage for only linear motion along an axis of the actuator system. A rotary base is configured to receive rotational input. Cross-blade flexures operatively connect the carriage to the rotary base, the cross-blade flexures including a plurality of blade flexures and being oriented at an oblique angle to the rotary base and to the axis of the actuator system. A rotary flexure operatively connects the rotary base to the frame. The cross-blade flexures and the rotary flexure are configured to convert rotary motion of the rotary base into linear motion of the carriage and to maintain axial and lateral stiffness.

An actuator system includes a frame configured to remain stationary relative to a carriage within the frame and connected to the frame by a flexure assembly configured to constrain the carriage for only linear motion along an axis of the actuator system. A rotary base is configured to receive rotational input. Cross-blade flexures operatively connect the carriage to the rotary base, the cross-blade flexures including a plurality of blade flexures and being oriented at an oblique angle to the rotary base and to the axis of the actuator system. A rotary flexure operatively connects the rotary base to the frame. The cross-blade flexures and the rotary flexure are configured to convert rotary motion of the rotary base into linear motion of the carriage and to maintain axial and lateral stiffness.