Abstract:
A wearable augmented reality (AR) or virtual reality (VR) display apparatus includes an optical waveguide; an optical free-form surface; and a microdisplay; wherein optical free-form surface is optically coupled to the waveguide through an inclined optical path.
Abstract:
A display apparatus includes a planar waveguide optical element, a projection optical system, and a microdisplay device. By including free-form optics and waveguide technology, the volume and weight of the display apparatus can be reduced, and an optical system can be realized with improved image quality, structure, and performance parameters.
Abstract:
A display apparatus includes a planar waveguide optical element, a projection optical system, and a microdisplay device. By including free-form optics and waveguide technology, the volume and weight of the display apparatus can be reduced, and an optical system can be realized with improved image quality, structure, and performance parameters.
Abstract:
Provided in the present invention is an adjustment and design method of an illumination system matched with multiple objective lenses in an extreme ultraviolet lithography machine; the illumination system to which the method is applied comprises a light source, a collection lens, a field compound eye, a pupil compound eye and a relay lens group; the method specifically comprises the steps: before a projection objective lens of an extreme ultraviolet lithography machine is replaced, calculating aperture angles of emergent ray of a relay lens A on a meridian plane and a sagittal plane by means of ray tracing; after the projection objective lens of the extreme ultraviolet lithography machine is replaced, taking out a central point of a exit pupil plane as an object point for ray tracing; adjusting inclination angles and positions of the relay lens A and a relay lens B, and adjusting inclination angles of central compound eye units of the pupil compound eye and the field compound eye, till an image plane of a current illumination system approximates to an arc-shaped image plane corresponding to the projection objective lens. By adjusting the illumination system on the basis of the adjustment method of the present invention, an illumination system matched with the projection objective lens system can be obtained, which dramatically reduces the cost of designing a projection lithography machine.
Abstract:
Materials, including metals such as bulk metals, specialty alloys, metallic films and coatings, are made up of many tiny single crystals, which may also be referred to as grains. The boundaries between crystals are called grain boundaries and govern properties such as mechanical strength, deformation, and electrical resistivity. These properties are affected by not only the number of grain boundaries formed, but also the density and orientation of those grain boundaries. Twin boundaries are a special type of grain boundary which have symmetrical “mirror image” structures and preserve favorable qualities of grain boundaries while suppressing unfavorable properties such as the initiation of cracks, inclusions, and other unwanted flaws. Some metals and alloys form twins more easily than others during processing. Metals with low stacking fault energy (SFE) such as austenitic stainless steel, copper (Cu), and silver (Ag) form twin boundaries more easily than metals with high SFE such as Magnesium (Mg) and Aluminum (Al).
Abstract:
An apparatus for detecting gas concentrations includes a coded filter to oscillate proximate a resonant frequency. A photo detector is positioned below the coded filter such that the coded filter selectively blocks light that is directed at the photo detector. Optics are positioned to project spectral information on to the coded filter. A processor analyzes a signal received from the photo detector. The processor is adapted to weight a harmonic attic signal.
Abstract:
Devices, methods, and systems relating to infrared imager devices, methods for providing infrared imagers, methods of operating infrared imagers, and infrared imager systems are disclosed. An infrared imager system includes a number of lenses, a beam splitter, an imager array, and a thermo-optical array, wherein the beam splitter directs light to the imaging array and to the thermo-optical array.
Abstract:
Methods and structure for improved client/server program communication by transmitting dynamically maintained service capabilities information from the server program to the client program. The client program generates a service request based on the received service capabilities information. Since the service capabilities information is retrieved from the server program and is dynamically maintained by the server program, the client program need not be updated when available services from the server program are modified. In one exemplary embodiment, the client program may be a print application client program and the server program may be a print server program. The print client program retrieves the current printer device capabilities (service capabilities information) and generates a print job ticket (service request) based on the retrieved, dynamically maintained printer device capability information. The job ticket is then transmitted to the server program to cause the printing of the document specified by the job ticket.
Abstract:
Methods and structures for processing JDF elements for a printing system by translating JDF elements into corresponding command language strings for output to a printer. The command language strings are associated with a priority value. The generated command language strings are output in an order based on the associated priority values so that the intended semantic and scope of the JDF elements may be maintained in the generated command language strings. The translation may use one or more translation tables to match a JDF element path name for a received JDF element with one or more entries in one or more translation tables. The matching table entries may specify a corresponding command language string and a priority value to be output to a printer. The generated command language strings and associated priority values may be stored in a memory structure to permit output in the desired order.
Abstract:
Plasma nitridation, in place of plasma oxidation, is used for the formation of a CCP layer. Al, Mg, Hf, etc. all form insulating nitrides under these conditions. Maintaining the structure at a temperature of at least 150° C. during plasma nitridation and/or performing post annealing at a temperature of 220° C. or higher, ensures that no copper nitride can form. Additionally, unintended oxidation by molecular oxygen of the exposed magnetic layers (mainly the pinned and free layers) is also avoided.