An optical device with switchable multiple lenses can be mounted on an electronic device through a connecting module, and provides finely-adjusted alignment with an image capturing lens in any position, and provides a zoom or wide-angle lens for the user to change the focal length and view field of the image. A light-filling/polarizing regulation module to fill light and eliminate unnecessary reflected light to avoid marginal diminishing effect of the image. The optical device includes a viewing device, a connecting module and a light-filling/polarizing regulation module, wherein the viewing device includes a lens module located in the housing and having at least two lenses through which an image captured by the image capturing lens is magnified. At least two lenses has the same lens power, or at least two lenses of different magnifications can be used with the switchable lens seat to obtain the effects of switching different lenses.

Control of a display of a wearable device is described herein. The wearable device may receive, from the camera, a video stream that depicts a physical environment according to a first level of magnification. The wearable device may present, on the display, the video stream at the first level of magnification. The wearable device may determine that a movement measurement from the movement sensor satisfies a measurement threshold. The wearable device may present, based on determining that the movement measurement satisfies the measurement threshold, the video stream at a second level of magnification.

A hair weave removal tool includes a handle, an elongated member, a magnifier, and a light source. The elongated member extends from an end of the handle. The elongated member includes an extension extending outwardly therefrom and a guide member located laterally adjacent the extension. The magnifier is pivotably coupled to the handle laterally adjacent the elongated member. The light source is coupled to the handle, and is configured to illuminate an area above the extension.

A digital magnifier monocle may include an eyepiece, a lens, an organic light-emitting diode screen placed between the eyepiece and the lens, and a first electronic module for the generation of a digital image. The first electronic module may be placed between the screen and the lens. The monocle may also have a second electronic module placed between the screen and the first electronic module. The second electronic module may be divided into a first unit configured for the transmission of a digital image from the first electronic module to the screen, and a second unit configured for connection with an augmented reality engine and/or the transmission of said at least one digital image from the monocle to a unit outside of the monocle. The unit external to the monocle being may be designed for the storage of the image.

A loupe apparatus includes a support including a nose bridge and a support arm, a post coupled to the support, a first lens holder rotatably coupled to the post, and a lens attachment detachable coupled to the support arm of the support. The lens holder is rotatable around an axis of the post. The lens holder includes a holder arm, an extension coupled to the holder arm, and a lens coupled to the extension. The lens attachment including a second post and a second lens holder rotatably coupled to the second post. The second lens holder including a second lens.

A loupe is bonded to a glasses-type holder to be worn around a head of a user. The loupe includes: a tube framework inserted into a hole or a cutout formed in the glasses-type holder and bonded with a UV adhesive; and a lens held in the tube framework. At least a portion at which the UV adhesive is applied in the tube framework is made of a resin not resistant to acetone and is covered with a paint resistant to acetone.

A method is provided for adjusting a loupe including an eyepiece and a tube framework having a first optical system adjacent to an object and a second optical system adjacent to the eyepiece. At least two zoom lenses in the first optical system shift along an optical axis between a first and a second position to change magnification. The method includes shifting at least one lens in the first optical system such that a distance at which the object is focused when the zoom lenses are shifted to the first position is substantially equal to a distance at which the object is focused when the zoom lenses are shifted to the second position; and then shifting at least one lens in the second optical system along the optical axis such that the object is focused when the zoom lenses are shifted to the first position or the second position.

Disclosed is a magnifying glass for skin diagnosis capable of acquiring a distortion-compensated skin image, and more particularly a magnifying glass for skin diagnosis capable of acquiring a magnified skin image and at the same time compensating for distortion occurring at the time of acquisition of the magnified skin image to provide an observer with a distortion-compensated, magnified skin image, thereby improving visibility, and therefore the observer can more clearly and vividly observe the skin. The magnifying glass includes an optical/light radiation structure, a light emission controller, and a housing.

A mirror magnifying attachment sheet apparatus for magnifying a portion of a mirror includes a magnifier body having a body back side, a body front side, and a body perimeter. The magnifier body is transparent and the body front side is convex to create a magnifying effect. The magnifier body is sufficiently flexible to be rolled for storage and transport. The body back side selectively engages a mirror. A storage tube has an open tube top side to receive the magnifier body. A cap is selectively engageable with the open tube top side of the storage tube.

A mirror magnifying attachment sheet apparatus for magnifying a portion of a mirror includes a magnifier body having a body back side, a body front side, and a body perimeter. The magnifier body is transparent and the body front side is convex to create a magnifying effect. The magnifier body is sufficiently flexible to be rolled for storage and transport. The body back side selectively engages a mirror. A storage tube has an open tube top side to receive the magnifier body. A cap is selectively engageable with the open tube top side of the storage tube.