Abstract:
A system for and a method of processing a transparent material, such as glass, using an adjustable laser beam line focus are disclosed. The system for processing a transparent material includes a laser source operable to emit a pulsed laser beam, and an optical assembly (6') disposed within an optical path of the pulsed laser beam. The optical assembly (6') is configured to transform the pulsed laser beam into a laser beam focal line having an adjustable length and an adjustable diameter. At least a portion of the laser beam focal line is operable to be positioned within a bulk of the transparent material such that the laser beam focal line produces a material modification along the laser beam focal line. Method of laser processing a transparent material by adjusting at least one of the length of the laser beam focal line and the diameter of the laser beam focal line is also disclosed.
Abstract:
Multi-colored pixelated displays are provided where a sparkle reduction surface comprising a micron grade diffraction element is positioned between the image display element and the display surface. More specifically, in accordance with one embodiment of the present disclosure, a multi-colored pixelated display is provided comprising an image display element and a transparent display cover. The image display element comprises an array of display pixels divided into a plurality of display sub-pixels associated with respective dedicated display color components. The transparent display cover comprises a display surface that is susceptible to marking and a sparkle reduction surface. The sparkle reduction surface is positioned between the image display element and the display surface along an optical path of the pixelated display and is spaced from the image display element by an optical distance D. The sparkle reduction surface comprises a micron grade diffraction element.
Abstract:
A method of controlling a frequency-converted laser source is provided where the laser source comprises a laser cavity, an external optical feedback component, a wavelength selective component, and a wavelength conversion device and the method comprises driving a gain section of the laser cavity with a gain signal that comprises a data component and a modulation component. The modulation component of the gain signal comprises a gain modulation amplitude I MOD that is sufficient to shift the available cavity modes in the spectral domain such that lasing at several different cavity modes sequentially is established as the gain signal is modulated.
Abstract:
An optical system having an optical axis, the optical system comprising: (I) a light source; (II) a reflector; (III) a lens component situated between the light source and the reflector; (IV) a receiver, wherein the light source and the receiver are situated substantially symmetrically and are decentered with respect to the optical axis, and are separated by a distance d from one another; wherein: (a) the lens component is positioned to provide a collimated beam when intercepting light from the light source, and (b) the reflector is situated to intercept the collimated beam and to reflect the collimated beam to the receiver through the lens; and such that the collimated beam is at an angle T' to the optical axis; and (c) the lens component is structured to provide on the receiver an image of the light source, the image characterized by (i) astigmatism of more than 0.05 waves RMS, and less than 0.1 waves RMS, when the lens component is not misaligned with respect to the average emission angle of the light source; and (ii) astigmatism of less than 0.05 for tilt angles of 2 to 5 degrees, when the lens component is tilted by of 2 to 5 degrees with respect to the average emission angle of the light source.
Abstract:
A method of controlling a frequency-converted laser source is provided where the laser source comprises a laser cavity, an external optical feedback component, a wavelength selective component, and a wavelength conversion device and the method comprises driving a gain section of the laser cavity with a gain signal that comprises a data component and a modulation component. The modulation component of the gain signal comprises a gain modulation amplitude IMOD that is sufficient to shift the available cavity modes in the spectral domain such that lasing at several different cavity modes sequentially is established as the gain signal is modulated.
Abstract:
An optical package is provided comprising a semiconductor laser, a wavelength conversion device, a lens assembly, and one or more adjustable optical components. The lens assembly and the adjustable optical component are configured to direct an output beam of the semiconductor laser towards the input face of the wavelength conversion device and to vary the position of the output beam on the input face of the wavelength conversion device. The lens assembly and the adjustable optical component are further configured to define a folded optical path such that laser light propagating along the optical path from the semiconductor laser to the wavelength conversion device is collimated or nearly collimated by the lens assembly prior to being reflected by the adjustable optical component and is focused by the lens assembly on the input face of the wavelength conversion device after being reflected by the adjustable optical component. Additional embodiments are disclosed and claimed.
Abstract:
Embodiments of an enclosure including a substrate having an anti-fingerprint surface are disclosed. The anti-fingerprint surface may include a textured surface, a coated surface or a coated textured surface that exhibits a low fingerprint visibility, when a fingerprint is applied to the anti-fingerprint surface. In one or more embodiments, the enclosure exhibits any one of the following attributes (1) radio, and microwave frequency transparency, as defined by a loss tangent of less than 0.03 and at a frequency range of between 15 MHz to 3.0 GHz; (2) infrared transparency; (3) a fracture toughness of greater than 0.6 MPa•m1/2; (4) a 4-point bend strength of greater than 350 MPa; (5) a Vickers hardness of at least 450 kgf/mm2 and a Vickers median/radial crack initiation threshold of at least 5 kgf; (6) a Young's Modulus in the range from about 50 GPa to about 100 GPa; and (7) a thermal conductivity of less than 2.0 W/m°C.
Abstract:
Compounds, compositions, articles, devices, and methods for the manufacture of light guide plates and back light units including such light guide plates made from glass. In some embodiments, light guide plates (LGPs) are provided that have similar or superior optical properties to light guide plates made from PMMA and that have exceptional mechanical properties such as rigidity, CTE and dimensional stability in high moisture conditions as compared to PMMA light guide plates.
Abstract:
Films for display device covers and display device covers comprising the same are disclosed. In one embodiment, a display cover for coupling to a display device includes a perimeter portion comprising a first surface and a second surface. A film of polymeric material may be attached to at least one of the first surface or the second surface of the perimeter portion. The film may include a first array of prisms extending from an edge of the perimeter portion to a distance L. The first array of prisms may be offset from and positioned below a surface of the film by an offset spacing dz.
Abstract:
A transparent substrate having an antiglare surface with reduced display sparkle. The transparent substrate has a roughened antiglare surface and a diffraction element below the antiglare surface. The diffraction element reduces sparkle by filling gaps between sub-pixels in a pixelated display with orders of diffraction. A display system comprising the transparent substrate and a pixelated display is also provided.