Abstract: Scanning beam display systems using fluorescent screens and various servo feedback control mechanisms to control display imaging qualities.

Abstract: A 2-D scanning system uses a fast-rotating raster-polygon as a single scanning component to produce straight scan lines over a 2-D image surface. An approach angle of incident light beams to the raster-polygon is selected to minimize pin-cushion distortion of scan lines introduced by polygon scanning on the image surface, and a tilt angle of the rotational axis of the raster-polygon is selected to position said polygon-scanning distortion symmetrically on the image surface. In addition, scan optics are configured to generate a predetermined amount of barrel distortion of scan lines on the image surface to compensate for pin-cushion distortion introduced by polygon scanning.

Abstract: Methods and systems for improving imaging quality and power efficiency of scanning beam display systems using fluorescent screens are disclosed. In various embodiments, beam shaping mechanisms for maximizing overlap between the beam cross-section and the florescent element corresponding to each color sub-pixel of the screen, as well as pulse width and timing adjustments, are introduced to reduce imaging noise and improve power efficiency of the display system.

Abstract: This specification describes phosphor compositions used in fluorescent layers for scanning beam displays. In general, one aspect of the subject matter described in this specification can be embodied in a display device having a fluorescent layer that absorbs an excitation light at a single wavelength and emits visible light. The fluorescent layer includes a plurality of parallel fluorescent stripes. At least three adjacent fluorescent stripes are made of three different fluorescent materials, which include a first fluorescent material that absorbs the excitation light and emits light of a first color, a second fluorescent material that absorbs the excitation light and emits light of a second color, and a third fluorescent material that absorbs the excitation light and emits light of a third color.

Abstract: A rollable display screen for use in electronic display systems includes a rollable screen that is mechanically coupled to a roller mechanism and has a plurality of pixel elements disposed thereon. The roller mechanism is configured as a stowing mechanism for the rollable screen, and may be further configured to deploy the rollable screen as a substantially planar viewing surface. The rollable display screen can be advantageously used for a durable and easily transported electronic display device since the rollable display screen is light-weight, durable, and compact.

Abstract: Embodiments of the present invention generally provide an apparatus and method for forming a display screen assembly that comprises multiple panel assemblies which are positioned to form a tiled display device that has improved visual characteristics, is easy to assemble and has a reduced manufacturing cost. In general, each panel assembly is formed so that when it is positioned in a display screen assembly the grid pattern, formed by the gap between the illuminated regions in adjacent panel assemblies, can be minimized. In one embodiment, the unwanted visual effect of the grid pattern is mitigated by minimizing and controlling the space, or gaps, formed between the illuminated area in adjacent panel assemblies. Embodiments of the present invention may also provide an apparatus and method for forming a single panel assembly that is used to display an image.

Abstract: Fluorescent screens and display systems and devices based on such screens using at least one excitation optical beam to excite one or more fluorescent materials on a screen which emit light to form images. The fluorescent materials may include phosphor materials and non-phosphor materials such as quantum dots.

Abstract: Laser display systems using at least one scanning laser beam to excite one or more fluorescent materials on a screen which emit light to form images. The fluorescent materials may include phosphor materials.

Abstract: Fluorescent screens and display systems and devices based on such screens using at least one excitation optical beam to excite one or more fluorescent materials on a screen which emit light to form images. The fluorescent materials may include phosphor materials and non-phosphor materials such as quantum dots.

Abstract: Scanning beam systems in both pre-objective and post-objective designs for display, printing and other applications. Various servo feedback control mechanisms are described to control display imaging qualities on fluorescent screens that emit fluorescent light to form images or a target surface of a printing medium or other objects.

Abstract: Scanning beam display systems based on scanning light on a fluorescent screen. The screen can include fluorescent materials which emit visible light under excitation of the scanning light to form images with the emitted visible light. Multiple lasers can be used to simultaneously scan multiple laser beams to illuminate the screen for enhanced display brightness. For example, the multiple laser beams can illuminate one screen segment at a time and sequentially scan multiple screen segments to complete a full screen.

Abstract: A laser-based display device includes a plurality of ultraviolet lasers configured to excite a phosphor-containing display screen in order to produce visible light. The laser-based display device also includes a reference laser used for calibration operations. A control system within the laser-based display device causes the reference laser beam to scan across one or more calibration features, and adjusts optical components of the laser-based display device, including activation timing of the ultraviolet lasers, based on feedback patterns generated by the calibration features, to compensate for drift effects. The calibration features may be disposed off-screen or on-screen.

Abstract: Systems and techniques for scanning-beam display are provided to use local dimming on the optical energy of at least one optical beam to minimize the non-uniform image brightness across the screen. This local dimming during the beam scanning can be achieved by adjusting optical energy of at least one optical beam during the scanning based on (1) the location of the scanning optical beam and (2) the predetermined distortion information at the location.

Abstract: An image is displayed on an electronic display device at a reduced power level. Power used by the display device is maintained below a predetermined maximum power level by uniformly scaling the initial optical intensity of an image to a lower optical intensity whenever displaying the image at the initial optical intensity would result in power consumption of the display device exceeding the predetermined maximum power level.

Abstract: This specification describes phosphor compositions used in fluorescent layers for scanning beam displays. In general, one aspect of the subject matter described in this specification can be embodied in a display device having a fluorescent layer that absorbs an excitation light at a single wavelength and emits visible light. The fluorescent layer includes a plurality of parallel fluorescent stripes. At least three adjacent fluorescent stripes are made of three different fluorescent materials, which include a first fluorescent material that absorbs the excitation light and emits light of a first color, a second fluorescent material that absorbs the excitation light and emits light of a second color, and a third fluorescent material that absorbs the excitation light and emits light of a third color.

Abstract: Scanning beam systems, apparatus and techniques in optical post-objective designs with two beam scanners for display and other applications.

Abstract: Multilayered screens with parallel light-emitting stripes for scanning beam display systems. The light-emitting materials may include phosphor materials and non-phosphor materials.

Abstract: Various phosphor compositions and organic compounds can be used in fluorescent layers for scanning beam displays. In general, one aspect of the subject matter described in this specification can be embodied in method of adjusting an emission spectrum of a phosphor material used in a display system that includes a fluorescent layer that absorbs an excitation light at a single wavelength and emits visible light. The method includes generating a binder mixture by combining one or more non-phosphor organic compounds with a binder material, wherein the binder mixture substantially transmits the excitation light and substantially absorbs a portion of the emission spectrum of the phosphor material. The method also includes combining the binder mixture with the phosphor material.

Abstract: Fluorescent screens and display systems and devices based on such screens using at least one excitation optical beam to excite one or more fluorescent materials on a screen which emit light to form images. The fluorescent materials may include phosphor materials and non-phosphor materials such as quantum dots.

Abstract: This specification describes phosphor compositions used in fluorescent layers for scanning beam displays. In general, one aspect of the subject matter described in this specification can be embodied in a display device having a fluorescent layer that absorbs an excitation light at a single wavelength and emits visible light. The fluorescent layer includes a plurality of parallel fluorescent stripes. At least three adjacent fluorescent stripes are made of three different fluorescent materials, which include a first fluorescent material that absorbs the excitation light and emits light of a first color, a second fluorescent material that absorbs the excitation light and emits light of a second color, and a third fluorescent material that absorbs the excitation light and emits light of a third color.