摘要:
A camera comprises an imaging system having a first depth of field for one or more first colours and a second depth of field, smaller than the first depth of field, for one or more second colours. The imaging system may comprise an iris with a first aperture for the first colour or colours and a second aperture, which is larger than the first, for the second colour or colours. The first aperture may be defined by an outer opaque ring (1) and the second by an inner chromatic ring (2). The inner ring (2) blocks the first colour(s) and passes the second colour(s). The image formed of the first colour(s) is sharper and its sharpness may be transposed by image processing to the other images.
摘要:
A multiple view directional display comprises a pixellated image display layer having a plurality of first pixels (P1) assigned to display a first image and a plurality of second pixels (P2) assigned to display a second image, and a parallax barrier aperture array (21) for directing light from the first pixels generally into a first viewing window (2) and for directing light from the second pixels generally into a second viewing window (3) not overlapping the first viewing window. The display further comprises first light directing means (31) for re-directing light emitted from a first lateral edge region (25) of each first pixel away from the second viewing window.
摘要:
A multiple view display comprises a parallax optic such as a parallax barrier (25) and a spatial light modulator (20) having a plurality of pixels arranged as rows and columns. The parallax optic (25) cooperates with the pixel structure to create a plurality of primary viewpoint-corrected viewing windows. The rows are arranged as groups and the parallax elements are arranged as rows. Each parallax element is aligned with a respective group of rows of the pixels. The pixels comprise sets of pixels of different colours arranged so that the sequence of visible colours viewable in each viewing window through each parallax element of each row of parallax elements is different from the sequence of pixel colours visible through the or each nearest parallax element in the or each adjacent row of parallax elements.
摘要:
An illumination system is providing comprising a first waveguide having a plurality of light-directing surfaces on its lower surface. These surfaces direct light through an output surface of the waveguide into at least one angular range while directing substantially no light into a different angular range. Each surface comprises a plurality of portions having different angles of inclination to a normal to the waveguide.
摘要:
A multiple view display comprises a display device and a plurality of converging lenses, such as a lenticular screen. Each lens cooperates with a respective region of the display device comprising one or more pixels (L) for displaying part of a first image for viewing in a first viewing region (Region 2 windows) and second pixels (R) for displaying part of a second image for viewing in a second region (Region 1 windows). The second pixels (R) are spaced horizontally from the first pixels (L). Each lens comprises first and second portions (Region 1, Region 2) extending vertically and parallel to each other and having lens centers (Lens Center 1, Lens Center 2) spaced apart horizontally. Each lens forming first and second images of the respective region of the display device, the first and second images being displaced from one another in the horizontal direction.
摘要:
A nozzle for a plasma arc cutting torch includes a substantially hollow, elongated body capable of receiving an electrode. The nozzle body defines a longitudinal axis and has a length along the axis from a first end of the nozzle body to a second end of the nozzle body. The nozzle also includes a plasma exit orifice disposed at the first end of the body. The first end of the nozzle body has a width and a ratio of the length of the nozzle body to the width of the nozzle body is greater than about 3.
摘要:
A display comprises a parallax optic (2), such as a combined parallax barrier and lens array, and a pixellated display device (1). The pixels of the display device (1) are arranged as groups cooperating with a parallax element (4) of the parallax optic (2). Each group comprises a first pixel (A) aligned with the centre of the parallax element (4), second and third pixels (B, C) on either side of the first pixel (A), and fourth pixels (D) shared with adjacent groups and disposed outside the second pixels (B, C). The parallax elements (4) make the different pixels of each group visible in different viewing regions. A control arrangement selects regions of the display and selects different combinations of the pixels of each group for image display within respective regions so as to provide simultaneously-present different viewing modes having different viewing range characteristics.
摘要:
A camera flash comprises a light guide arranged to extract light at least through one surface; and one or more light sources arranged, in use, to emit light into the lightguide. Each light source is an LED or a laser diode. The camera flash is connectable, in use, to drive circuitry, the drive circuitry being for driving the light source(s) to emit a pulse of light. The waveguide spreads out the light from the light source(s), so that a flash of light from the camera flash does not present a safety risk, while minimizing loss of the light from the light source(s). The camera flash can thus provide a high overall optical output, spread over an extended area (as defined by the waveguide). The lightguide may for example be disposed around a camera module of a mobile telephone camera.
摘要:
A display comprises: a single-view image display panel (6); and a parallax optic (8) disposed over a display face of the image display panel for restricting the angular spread of light output from the display face of the image display panel. This enables light to be concentrated in a desired viewing angle range (66), and avoids a user (56) seeing unwanted reflections that may occur as a result of a greater viewing angle range (64) if the parallax optic (8) is not provided. The display may be used, as an example, in a motor vehicle to prevent unwanted reflections from the windscreen (62) of the vehicle.
摘要:
A multiple view display comprises a display device and a plurality of converging lenses, such as a lenticular screen. Each lens cooperates with a respective region of the display device comprising one or more pixels (L) for displaying part of a first image for viewing in a first viewing region (Region 2 windows) and second pixels (R) for displaying part of a second image for viewing in a second region (Region 1 windows). The second pixels (R) are spaced horizontally from the first pixels (L). Each lens comprises first and second portions (Region 1, Region 2) extending vertically and parallel to each other and having lens centres (Lens Centre 1, Lens Centre 2) spaced apart horizontally. Each lens forming first and second images of the respective region of the display device, the first and second images being displaced from one another in the horizontal direction.