Abstract: Technologies are generally described herein for a mirror array display system. In some examples, a controller can be configured to execute various methods for displaying content using a mirror array display having a mirror array including a number of mirrors and a light source. The controller can obtain content for display. The controller can also determine at least one aiming parameter associated with the number of mirrors and the light source. The controller can also emit light using the light source and aim the light emitted by the light source to a convergence point to generate a three-dimensional representation of the content, wherein the light is aimed in accordance with the at least one aiming parameter.

Abstract: Technologies are generally described to display of an Augmented Reality (AR) image using a micromirror on an eyeglass. In some examples, AR data may be received at a controller coupled to a laser transmitter positioned on a surface of a frame of the eyeglass. The laser transmitter may transmit a laser signal modulated by the received AR data onto the micromirror positioned on, preferably, a proximal surface of a lens of the eyeglass. Concurrently, an electrical signal may be transmitted to a base of the micromirror causing the micromirror to oscillate in correlation with an intensity of the laser signal such that the AR image is created on a retina. In another embodiment, the laser signal modulated by the received AR data may be reflected from a plane mirror positioned on the proximal surface of the frame, forward to the laser transmitter, to transmit the laser signal onto the micromirror.

Abstract: Technologies are generally described for an extrusion nozzle of a 3D printing system that allows deposition and rapid solidification of a resin layer on a non-uniform substrate surface in order to form a 3D printed article of various shape and size. The extrusion nozzle may include a center tube that facilitates a flow of resin through the center tube to deposit the resin layer on the substrate surface. A second tube may surround the center tube such that a first annular space between the center tube and the second tube is vacuum-insulated to maintain the resin at a constant temperature as it flows through the center tube and is deposited. A third tube may surround the second tube, and guide a deposition of a cooling gas onto the deposited resin layer through a second annular space between the second tube and the third tube to rapidly solidify the resin layer.

Abstract: In some examples, a system may be configured to generate a holographic image of an object. The system may include a holographic recording medium and a fiber laser. The fiber laser may be configured to generate a first output beam at a first end of an optical fiber of the fiber laser. The fiber laser may be further configured to generate a second output beam at a second end of the optical fiber. The first output beam may be configured to be directed toward the object as an illumination beam for the holographic image of the object. Additionally, the second output beam may be configured to be directed toward the holographic recording medium as a reference beam for the holographic image.

Abstract: Lighting devices are disclosed having a light-transmissive resin sheet and one or more light sources disposed within the light-emitting resin sheet. The light sources may, in some embodiments, be oriented so that a large portion of light emitted from the light sources exhibits total internal reflection within the light-transmissive resin sheet and is trapped inside the sheet. This total internal reflection may, for example, advantageously provide a more uniform light emitted from the lighting device when scattered from objects inside the sheet. Methods of making and using the lighting device are also disclosed.

Abstract: Lighting devices are disclosed having a light-transmissive resin sheet and one or more light sources disposed within the light-emitting resin sheet. The light sources may, in some embodiments, be oriented so that a large portion of light emitted from the light sources exhibits total internal reflection within the light-transmissive resin sheet and is trapped inside the sheet. This total internal reflection may, for example, advantageously provide a more uniform light emitted from the lighting device when scattered from objects inside the sheet.

Abstract: Technologies are generally described to display of an Augmented Reality (AR) image using a micromirror on an eyeglass. In some examples, AR data may be received at a controller coupled to a laser transmitter positioned on a surface of a frame of the eyeglass. The laser transmitter may transmit a laser signal modulated by the received AR data onto the micromirror positioned on, preferably, a proximal surface of a lens of the eyeglass. Concurrently, an electrical signal may be transmitted to a base of the micromirror causing the micromirror to oscillate in correlation with an intensity of the laser signal such that the AR image is created on a retina. In another embodiment, the laser signal modulated by the received AR data may be reflected from a plane mirror positioned on the proximal surface of the frame, forward to the laser transmitter, to transmit the laser signal onto the micromirror.

Abstract: Technologies are generally described herein for a mirror array display system. In some examples, a controller can be configured to execute various methods for displaying content using a mirror array display having a mirror array including a number of mirrors and a light source. The controller can obtain content for display. The controller can also determine at least one aiming parameter associated with the number of mirrors and the light source. The controller can also emit light using the light source and aim the light emitted by the light source to a convergence point to generate a three-dimensional representation of the content, wherein the light is aimed in accordance with the at least one aiming parameter.

Abstract: Lighting devices are disclosed having a light-transmissive resin sheet and one or more light sources disposed within the light-emitting resin sheet. The light sources may, in some embodiments, be oriented so that a large portion of light emitted from the light sources exhibits total internal reflection within the light-transmissive resin sheet and is trapped inside the sheet. This total internal reflection may, for example, advantageously provide a more uniform light emitted from the lighting device when scattered from objects inside the sheet.

Abstract: Lighting devices are disclosed having a light-transmissive resin sheet and one or more light sources disposed within the light-emitting resin sheet. The light sources may, in some embodiments, be oriented so that a large portion of light emitted from the light sources exhibits total internal reflection within the light-transmissive resin sheet and is trapped inside the sheet. This total internal reflection may, for example, advantageously provide a more uniform light emitted from the lighting device when scattered from objects inside the sheet. Methods of making and using the lighting device are also disclosed.

Abstract: Techniques for reinforcing concrete using rebar are disclosed. Some example embodiments may include prestressed concrete structures reinforced by twisted, threaded reinforcing bars. An example reinforcing bar for a prestressed concrete structure may include an elongated, generally cylindrical rod; an external thread disposed on the generally cylindrical rod, the external thread formed from an elongated, generally nonlinear channel wrapped about a radial surface of the generally cylindrical rod in a generally helical fashion. A base portion of the nonlinear channel may be disposed substantially against the radial surface of the generally cylindrical rod and/or an upstanding portion of the nonlinear channel may extend generally orthogonally from the radial surface of the generally cylindrical rod.

Abstract: Techniques for reinforcing concrete using rebar are disclosed. Some example embodiments may include prestressed concrete structures reinforced by twisted, threaded reinforcing bars. An example reinforcing bar for a prestressed concrete structure may include an elongated, generally cylindrical rod; an external thread disposed on the generally cylindrical rod, the external thread formed from an elongated, generally nonlinear channel wrapped about a radial surface of the generally cylindrical rod in a generally helical fashion. A base portion of the nonlinear channel may be disposed substantially against the radial surface of the generally cylindrical rod and/or an upstanding portion of the nonlinear channel may extend generally orthogonally from the radial surface of the generally cylindrical rod.

Abstract: A compact bass speaker cabinet uses a long, narrow, tapered waveguide that acts as does a small radial portion of the air outside a large pulsating sphere, and has the same bass response as the large pulsating sphere. The smaller end is closed and the longer end is open. In one embodiment the inside of the waveguide is a rectangle about an inch thick and substantially as wide as the speaker or speakers that are mounted on the wider surface close to or slightly overlapping the closed end; and the inside surfaces are tapered so that they meet at a point which lies beyond the closed end by a distance equal to the radian wavelength of the longest sound wave that is to be produced.

Abstract: Tags that are associated with an item such as a person or vehicle are caused to optically flicker out an identifying pattern when triggered by a user or a device at an access point (gate, computer, card reader, or the like). The association of the tag and item can include a physical attachment. The flickering light is analyzed and access is permitted if the data key encoded in the flickers is an authorizing code. A lamp such as a laser or LED is used to create the flickers.

Abstract: A digital license sharing method, system and apparatus is provided for use in a digital rights management system. Usage rights in respect of digital content are transferred between content player devices or applications by associating with each player a status indication. Transfer is carried out by transmitting a request to obtain the usage rights from a player requiring usage rights to a player currently holding the rights. The transferring player sets a first status indication to indicate that it is no longer entitled to exercise the rights, and transmits a response to the requesting player to transfer the usage rights. The requesting player then sets a second status indication to indicate that it is henceforth entitled to exercise the rights. Methods and apparatus for creating transferable licenses are also provided that employ a sharable license format including a validated portion and an unvalidated portion.

Abstract: Items, for example grocery items in a shopping cart or warehoused items being inventoried, are counted by electronically registering flickers from tags attached to, or incorporated into, the items. The registration takes place during an interval of time equal to the flicker repetition rate of the tags. For example, each item's tag might flicker out an identifying signal (preferably from an LED in the tag) in about a thousandth of a second, and repeat this flicker once a second. A detector registers all of the flickers from all of the items during a one-second interval, and thereby counts the items because each will have flickered once during that time. Other items, with different identifying flickers, can be counted during the same interval. Thus, large numbers of various tagged items can be counted rapidly.