A reflective mobile phone lens, comprising a semi-permeable semi-reflecting mirror (5), a concave spherical reflecting mirror (4) and a mobile phone (1) screen; the mobile phone (1) screen serves as a display screen to display an image; light passes through the semi-permeable semi-reflecting mirror (5) and arrives at the concave spherical reflecting mirror (4), and then is reflected by the concave spherical reflecting mirror (4) back to the semi-permeable semi-reflecting mirror (5), and is reflected by the reflective surface of the semi-permeable semi-reflecting mirror (5) onto the mobile phone (1) screen. The mobile phone lens enables watching an online movie or playing a virtual reality game on the mobile phone (1) to have a good effect like watching a movie on a big screen in a cinema.

Disclosed is a magnifier that is adapted to rest upon a table. The magnifier includes an articulated camera arm that permits an associated camera to be pointed in a number of different directions. This permits the camera to focus upon, and enlarge, both distant and nearby objects. The magnifier also includes pivotal support legs. The legs have a first locked position to support the magnifier upon a table and a second position wherein the legs are locked in position adjacent the housing of the magnifier. This permits the magnifier to be readily transportable and stowable to accommodate the needs of the user.

An electronic device includes an instrument panel that includes a display opening, where the instrument panel is located in a first plane; a circuit board located inside the electronic device, where the circuit board includes a display device that includes a display area, and where the display area is located in a second plane that is different from the first plane; and a waveguide that couples the display area to the display opening and guides light, and/or an image displayed in the display area, from the display area to the display opening.

Optical systems for displaying an image are described. The optical systems include a first and second optical lenses separated by air. A partial reflector is disposed on and conforms to a major surface of the first optical lens where the major surface can have a best-fit spherical radius of curvature in a range from 20 mm to 200 mm. A reflective polarizer is disposed on and conforms to a major surface of the first optical lens where the major surface can have a best-fit spherical radius of curvature greater than about 500 mm. A retarder layer is disposed between the reflective polarizer and the partial reflector. The first optical lens can have an optical birefringence of less than 15 nm/cm and the second optical lens can have an optical birefringence of greater than 15 nm/cm. A method of fabricating an optical assembly is described.

A head-mounted fixing device includes: a head frame including two side frame portions, and a front frame portion located between the two side frame portions and connected to the two side frame portions, and the two side frame portions and the front frame portion being made of rigid materials; an elastic piece including one end connected to the front frame portion; a headgear including an arc portion and a top portion, wherein two ends of the arc portion are respectively connected to the two side frame portions, one end of the top portion is connected to another end of the elastic piece, and another end of the top portion is connected to the arc portion; it is characterized in that the front frame portion is used to abut against a user's forehead to provide a fulcrum.

An ocular optical system for imaging of imaging rays entering an eye of an observer via the ocular optical system from a display screen is provided. A side facing towards the eye is an eye-side, and a side facing towards the display screen is a display-side. The ocular optical system includes a first lens element, a second lens element, and a third lens element from the eye-side to the display-side in order along an optical axis. The first lens element, the second lens element, and the third lens element each include an eye-side surface and a display-side surface. The second lens element has positive refracting power, and the display-side surface of the second lens element has a concave portion in a vicinity of the optical axis.

The image display device includes an image generating unit that emits first image light, a pupil expanding element that expands a diameter of a light flux included in the first image light from the image generating unit to obtain second image light, a first light condensing optical system that condenses the second image light and forms an intermediate image, and a second light condensing optical system that condenses light from the intermediate image and generates a virtual image on eye of a viewer, in a plane including at least the image generating unit, the pupil expanding element, and the eye of the viewer, a maximum emission angle of the first image light is smaller than a maximum viewing angle of the virtual image, and the diameter of the light flux included in the second image light is greater than that of a light flux included in the virtual image.

Disclosed is a video processor for a magnifier camera. In particular, the disclosure relates to a video processor that eliminates the use of a frame buffer. This, in turn, reduces the latency otherwise present in the video signal. The disclosed video processor also allows selected portions of the display to be shaded. This highlights the non-shaded portions of the display while at the same time allowing the entire object to be perceived by the user.

A magnifying bottle assembly, comprising a cap; further comprising a cap housing and a magnifying lens. Said magnifying lens provides a radially extended portion, further comprising an integral retaining ring oriented upwardly for engaging said cap housing, and a gasket engaging ring oriented downwardly for engaging a gasket. Said retaining ring is oriented with respect to said radially extended portion so as to form a pressure channel. The magnifying bottle assembly further comprises a container suitable for engaging said cap.

The system of the preferred embodiments is an underwater viewer including: A transparent lens, where the transparent lens has at least two flat facets, where the at least two flat facets are arranged to provide an interior cavity having a void adapted to hold fluid; a frame, where the frame is attached around the circumference of the lens, where the joint between the lens and the frame is sealed to prevent fluid flow; where a user can look through the flat facets of the lens into a body of water. The underwater viewer of the preferred embodiments is preferably designed to be at least one of held by a user, floated in a body of water, and incorporated into at least one of a water going board and a water going craft, and it is designed to hold water above the surface of the body of water by way of a vacuum so that a user can look through the lens into the body of water; the flat faceted lens allows viewing into the body of water without distortion, unlike prior art devices, and the fact that the device is preferably used with the convex side of the lens facing upward allows water from waves or other disturbances to run off of the lens due to gravity and not interfere with the user's view into the water. The underwater viewer may, however, be used for any suitable purpose.