A quadric reflector can have an approximately conical shape. The shape can tapers from a wide base to an apex. The apex can include an aperture, a mirror, and a set of one or more optical elements. A mirror can be positioned within an overhang enclosure of the device in a plane approximately parallel to a circular cross section of the conical shape. The mirror can reflect environmental light that is reflected by the quadric reflector into the aperture or reflect light emitting from the aperture onto the quadric reflector. The overhang enclosure can have a substantially conical shape which eliminates secondary reflection resulting from the environmental light reaching the aperture twice. Using the overhang enclosure to absorb the secondary reflection eliminates or minimizes banding.

Provided is a technology which is suitable for both widening an image capture view angle and securing an angular resolution across the entire image capture range. In an imaging optical system, a rate of change of an image height per view angle, i.e. dy/dθ, is greater than 0 at a maximum view angle θmax, a rate of change of a view angle per image height, i.e. D(θ)=1/(dy(θ)/dθ), satisfies an expression D(θp)>{(D(θmax)−D(0))/θmaxθ}θp+D(0), with θp which lies in a range of 0<θ<θmax, and it satisfies an expression 1.5<(y(θs)/θs)/{(y(θmax)−y(θs))/(θmax−θs)}<3.0 with a switching view angle θs of the rate of change D(θ) of the view angle per image height.

A system and method are disclosed for exhibiting wide-screen motion pictures, including in multiplex-style theaters, with an immersive, picture-dominance effect not previously obtainable in such theaters. The invention uses a zero-gain or nominal-gain curved screen to accommodate a wide-screen presentation, and a digital projector capable of delivering 14 to 22 foot-lamberts of light to the screen. The invention can support any theatrical aspect ratio for presentation, including the widest in use, 2.76:1. To eliminate image distortion, the invention uses warping software to correct the image for the geometry of the auditorium and the shape of the screen. This correction is established for every aspect ratio that will be accommodated in the auditorium in which the invention is installed, and aspect ratios can be changed to display content with different aspect ratios during a program.

Apparatuses, systems, and methods for producing non-rotationally symmetric optical aberrations. Such aberrations may be created by a removable attachment that may be attached to another lens, such as a spherical lens. Aberrations that appear to reproduce an anamorphic effect may be produced, yet the underlying camera system may remain a spherical camera system, and the capture mode may remain non-anamorphic.

Apparatuses, systems, and methods for producing non-rotationally symmetric optical aberrations. Such aberrations may be created by a removable attachment that may be attached to another lens, such as a spherical lens. Aberrations that appear to reproduce an anamorphic effect may be produced, yet the underlying camera system may remain a spherical camera system, and the capture mode may remain non-anamorphic.

At least one lens element (104, 106) defines a cylindrical void (116) that encloses a conical element (108) having a conical mirror surface (110) defined about a common vertical axis (112) upward from a tip (118) on a generally 45 degree angle to the vertical axis. The lens element(s) have cross sectional shapes (104, 106) defined relative to a plane passing through the lens element and including the vertical axis, the cross sectional shape constant in rotation about the vertical axis and imparting a generally toroid shape to the lens element(s) for capturing image information from a surrounding scene and translating the captured light into a horizontal projection is oriented toward the conical mirror surface, which reflects the projection 90 degrees vertically downward toward an image plane (204) of a light sensitive sensor (212) for generating a photographic representation of the surrounding scene.

The present application discloses a mobile terminal with a built-in anamorphic lens, the mobile terminal is provided with a widescreen anamorphic lens which comprises a cylindrical lens group and a spherical lens group, the cylindrical lens group at least comprises a group of cylindrical negative optical power lenses and a group of cylindrical positive optical power lenses. A widescreen anamorphic lens is arranged in the mobile terminal. The optical characteristics of the cylindrical lens in the widescreen anamorphic lens are utilized to “compress” the incident light entering horizontally while keeping the incident light entering vertically unchanged, so the widescreen anamorphic lens may compress a widescreen image into a standard image area. After the compressed picture taken by the widescreen anamorphic lens is deformed and corrected by the image correction module, widescreen images and videos may be obtained, meeting the needs of users for widescreen shooting by the mobile terminal.

The present application discloses a mobile terminal with a built-in anamorphic lens, the mobile terminal is provided with a widescreen anamorphic lens which comprises a cylindrical lens group and a spherical lens group, the cylindrical lens group at least comprises a group of cylindrical negative optical power lenses and a group of cylindrical positive optical power lenses. A widescreen anamorphic lens is arranged in the mobile terminal. The optical characteristics of the cylindrical lens in the widescreen anamorphic lens are utilized to “compress” the incident light entering horizontally while keeping the incident light entering vertically unchanged, so the widescreen anamorphic lens may compress a widescreen image into a standard image area. After the compressed picture taken by the widescreen anamorphic lens is deformed and corrected by the image correction module, widescreen images and videos may be obtained, meeting the needs of users for widescreen shooting by the mobile terminal.

A pipeline inspection device including a housing, an antenna, an imaging device having one or more lenses, two diaphragms extending from the housing and distal to one another along the length of the housing, the two diaphragms sharing a longitudinal axis with the housing, a processor, a storage device in communication with the processor, and a memory in communication with the processor, storing a machine learning algorithm and instructions to be executed by the processor, wherein the antenna is operable to communicate with a remote transceiver, the remote transceiver being located on a pipeline through which the pipeline inspection device travels. Also disclosed herein are systems and methods for using the same.

A pipeline inspection device including a housing, an antenna, an imaging device having one or more lenses, two diaphragms extending from the housing and distal to one another along the length of the housing, the two diaphragms sharing a longitudinal axis with the housing, a processor, a storage device in communication with the processor, and a memory in communication with the processor, storing a machine learning algorithm and instructions to be executed by the processor, wherein the antenna is operable to communicate with a remote transceiver, the remote transceiver being located on a pipeline through which the pipeline inspection device travels. Also disclosed herein are systems and methods for using the same.