An accessory for use with a phone or tablet computer. The accessory connects to the phone, either by enveloping the phone with a case-like element or clipping to the side of the phone with a clip. A hinged lens covers at least a portion of the screen and pivotally connects to the connection portion. This lens can be tilted up from the screen to increase the effective prescription of the lens, enlarging the text and images on the screen of the phone, or can be tilted back down towards the screen to reduce the effect.

A dermatoscope device is provided. The dermatoscope device includes an optical tube structure including an optical unit, which is provided to allow an observer to enlarge and inspect an observation target, and a light emitting unit which irradiates light to the observation target to be enlarged and inspected through the optical unit, a control module to control a form of irradiating the light through the optical unit, and a housing having the optical tube structure and the control module embedded therein.

A magnification apparatus includes a main body, an inner sleeve, an outer sleeve, an adjusting ring and a locating element. The inner sleeve is disposed within the main body. The outer sleeve includes a locating hole, wherein the outer sleeve is rotatably disposed around the inner sleeve. The adjusting ring is rotatably disposed around the main body to rotate the outer sleeve relative to the main body and the inner sleeve. The locating element includes a fixing element, an elastic element and a locating sleeve, wherein the locating sleeve is placed to penetrate through the main body and the locating hole and against an outer surface of the inner sleeve, the fixing element is disposed on the adjusting ring, and the elastic element includes a first end placed against the fixing element and a second end placed against an interior of the locating sleeve.

In general this device allows one to rapidly configure a mobile phone for use with a microscope. When using the device a person can take images or videos and rapidly share them, or have another user videoconference in and see the images in real time. Further, it saves both money and time when using a microscope in a laboratory (or other) setting. This device can also be used without microscope for a macro lens with illumination and light differential for purposes such as jewelry or medical examination.

A makeup application device comprising one or more lenses may be used for improved vision to help a person wearing the device to more easily apply makeup to the person's face. The device may include a head mount assembly for mounting the device on the person's head and one or more flexible arms for mounting the one or more lenses on the head mount assembly so that flexing of the arm or arms provides movement of the lens or lenses.

A magnifying display device, which includes a fixed base, an arm, a flip stand, a reflective module and a magnifying module, objects could be magnified several times and imaged far longer than several times of the object distance according to the principle of virtual imaging of concave mirrors, the magnified images users looked is imaged in a visual distance farther than two meters, to relieve visual fatigue caused by overuse of eyes at close range, to thereby slow down myopia progression.

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.

Lens barrel includes: a rotating barrel which holds a first optical system and includes an adjustment member that can protrude from an inner circumferential surface; and a fixed barrel which holds a second optical system and includes a helical groove with which the adjustment member engages on an outer circumferential surface. The adjustment member can be located in a first or a second position with respect to the helical groove. Part of the adjustment member is in the helical groove in any of the first position and the second position. When in the first position, the adjustment member can slide along the helical groove, so the rotating barrel helically rotates relative to the fixed barrel, and when in the second position, the adjustment member is in contact with the helical groove, to prevent rotation of the rotating barrel with respect to the fixed barrel.

A multifunctional case for cell phones, tablets, and other personal electronic devices with flip, sliding, and adjustable magnifying lens for viewing a screen is disclosed. The multifunctional case includes options with a detachable lens and a handle, allowing a user carrying a smartphone or similar personal electronic device mounted in the multifunctional case an immediately available means to magnify print on objects, giving the user various ways to eliminate many occasions where reading glassed are needed.