A method for assembling a head mounted display includes providing a rigid structural frame, and forming an inner optical assembly by assembling optical components to the structural frame including at least one micro-display configured to generate an image, and at least one reflective optical component configured to direct the image to a user's eye. The method includes assembling an outer frame to the inner optical assembly to provide protection for the optical components and customization of the head-mounted display for the user.

A positioning platform providing positioning of component placed thereon onto four axes includes a lower plate, an upper plate, a first adjustment member, a second adjustment member, a third adjustment member, connection members, fixing members, a first fixing block, a second fixing block, fixing plates, slot fixing members, fixing covers, a yaw screw, a spring pin, a spring, and a yaw block.

An example variable focusing lens apparatus, as well as example methods for assembling and operating the example variable focusing lens apparatus, is provided. The example variable focusing lens apparatus includes a rear pair of coil elements powered by a rear coil current, a front pair of coil elements positioned in front of the rear pair of coil elements and powered by a front coil current, and a barrel lens assembly comprising a top magnetic element secured on a top portion of the barrel lens assembly and a bottom magnetic element secured on a bottom portion of the barrel lens assembly. In some examples, the barrel lens assembly is moveable to a plurality of barrel lens assembly positions corresponding to a plurality of current differential ratios associated with the rear coil current and the front coil current.

An image capturing device is provided. The image capturing device includes a device housing, a lens module, a restriction unit, and a latch. The device housing has an insertion slot. The lens module pivots on the device housing. Relative to the device housing, the lens module is adapted to be rotated between a first module orientation and a second module orientation. The restriction unit is disposed in the device housing. The latch passes through the insertion slot of the device housing, wherein the latch is adapted to be moved between a first latch position and a second latch position. When the latch is in the first latch position, the latch sufficiently pushes the restriction unit. When the latch is in the second latch position, the pressure from the latch applied to the restriction unit is decreased.

This disclosure describes an afocal attachment that allows for alteration of received electromagnetic radiation (or “light”) prior to entry into the telescope. For example, a rifle scope may have a base magnification of 2x, and the afocal attachment may allow magnification of a received image at levels ranging from 2x to 4x. In this example, the entire telescope system with the afocal attachment installed will have an overall magnification of 4x to 8x. In another example, the magnification of the telescope can be increased, transforming a telescope with a 4x magnification into a telescope with a higher effective magnification. In some instances the afocal attachment's optical axis can be configured to permit independent adjustment, allowing for easy removal and reinstallation of the afocal attachment without a need to re-adjust the telescope itself.

An imaging module includes: a substrate on which an imaging element is mounted and in which a through-hole is formed; a holding section that has a support pin inserted into the through-hole in such a manner that the support pin penetrates the through-hole and that holds an optical system forming a subject image on the imaging element; and an adhesive that is provided in the through-hole and that fixes the substrate to the support pin, and at least a tip end portion of the support pin has a tapered shape from a root side of the support pin toward a tip end of the support pin.

Embodiments of this application disclose a camera module, including a lens group, an image sensor, a reflective member, and a driving assembly. The lens group includes a plurality of lenses, the reflective member is configured to reflect, to the image sensor, light rays focused by at least one of the plurality of lenses, and the driving assembly is configured to drive the reflective member to move. Costs of the camera module are relatively low. The embodiments of this application further disclose an electronic device.

An calibration kit includes a base, a combination of calibration parts, and a manipulation part. The combination of calibration parts is disposed on the base and includes a first calibration part and a second calibration part. The first calibration part has a first calibration surface. The second calibration part has a second calibration surface. The first calibration part and the second calibration part are relatively movable in a movement direction and are movable relative to the base. The manipulation part is movably or rotatably disposed on the base. The manipulation part is configured to be operable to drive the first calibration part and the second calibration part to move in the movement direction relative to the base, so that the combination of calibration parts forms a three-dimensional calibration surface configuration through the first calibration surface and the second calibration surface.

A hybrid reflective/refractive HMD includes a structural frame, refractive optical lens elements, and optics housings coupled to the structural frame and positioned in front of a user's first and second eyes. Light-emitting visual sources and reflective optical surfaces are contained in the optics housings. Visual content is transmitted from light-emitting visual sources to the reflective optical surfaces. The visual content is reflected within the reflective optical surfaces at least four times without passing through a refractive optical lens element. The visual content is transmitted to the user's first eye or the user's second eye. Simultaneous with the transmission of the visual content to the user's first eye or the user's second eye, a real-world view of the outside surrounding environment is transmitted to the user's first eye or the user's second eye. The visual content is overlaid onto the real-world view of the outside surrounding environment.

A camera module includes a lens driving device having a housing, a first circuit board disposed below the housing, a filter disposed on an upper surface of the first circuit board, a second circuit board disposed below the first circuit board, an image sensor disposed on the second circuit board and coupled to a lower surface of the first circuit board, and a first adhesive member disposed between the lower surface of the first circuit board and an upper surface of the second circuit board, and electrically connecting the first circuit board and the second circuit board. A lower surface of the image sensor is higher than the upper surface of the second circuit board.