Abstract: An electrochromic material including at least one compound represented by Chemical Formulas 1 to 3, for use in an electrochromic device: wherein Z1 to Z3 are each independently selected from a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroarylene group, a substituted or unsubstituted C3 to C30 cycloalkylene group or a combination thereof, R1 to R3 are each independently selected from a single bond, a substituted or unsubstituted C1 to C30 alkylene group, a substituted or unsubstituted C3 to C30 cycloalkylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroarylene group or a combination thereof.
Abstract: Electro-optic elements are becoming commonplace in a number of vehicular and architectural applications. Various electro-optic element configurations provide variable transmittance and or variable reflectance for windows and mirrors. The present invention relates to various thin-film coatings, electro-optic elements and assemblies incorporating these elements.
January 22, 2010
Date of Patent:
May 1, 2012
William L. Tonar, John S. Anderson, Jeffrey A. Forgette, George A. Neuman, Gary J. Dozeman, David J. Cammenga, Henry A. Luten, G. Bruce Poe, Nelson F. Brummel, Lansen M. Perron
Abstract: Distance information is displayed at the time of manual focusing but is not displayed at the time of automatic focusing. By rotating a focus switching ring around an optical axis for automatic focusing, an intermediate ring coupled thereto by a cam and a distance display ring rotatably coupled to the intermediate ring are moved along the optical axis to an image side. At this time, the distance display ring and the manual focus ring are uncoupled from each other. With this switching, the distance information written on the distance display ring is also moved to the image side. Therefore, the distance information, which is visible through an information display window of the focus switching ring at the time of manual focusing, becomes invisible.
Abstract: In general, in one aspect, the invention features an apparatus that includes a plurality of optical elements arranged to form an image of an object. The elements include a first element comprising one or more regions of a polarizing material, the regions being shaped as one or more visual features, a polarizer, and a mounting assembly including a first mount for the first element and a second mount for the polarizer. At least the first or second mount is rotatable with respect to an optical axis between a first orientation and a second orientation. In the first orientation, the visual features are visible in the image of the object and, in the second orientation, the visual features are not visible in the image of the object.
September 21, 2009
Date of Patent:
February 21, 2012
Martin Moskovits, Qihong Wu, Robert Koefer, Xu Zhang, Linh Nguyen, Thomas Tombler
Abstract: The superposition system with micro electromechanical systems (MEMS, e.g. DMDs from Texas Instruments) superposes the “ON”-lights of two MEMSs. More specifically, the invention relates to the chirality (handedness) of MEMS and the geometric problems associated with this handedness for superposition systems. In this application we uncover a solution to superpose the images modulated by two MEMSs using an exchange of columns and rows in one of the addressing matrices.
Abstract: A driving device for an optical device comprising: an operation ring 3 to which a driving force from an operation member 4 is transmitted; a driving ring 9 to which a driving force from an actuator 20 is transmitted; an output ring 5 which transmits a driving force to an optical component 8a; and a planetary roller 6 which slides on one end face 3b of said operation ring 3 and one end face 9b of said driving ring 9, said planetary roller 6 being rotatably attached to said output ring 5 so as to selectively transmit the driving force from any one of said operation ring 3 and said driving ring 9 to said output ring 5. A sliding face 3b of said operation ring 3 with said planetary roller 6 consists of a lower friction member than the operation ring body.
Abstract: A camera lens module is provided, in which a lens housing has at least one lens, a main frame contains the lens housing along an optical axis, a support portion is engaged with the lens housing and with the main frame to be rotatable along the optical axis, a cover is engaged with the main frame, for keeping the lens housing contained in the main frame, and a control member is engaged with the cover, for moving the support portion along the optical axis.
Abstract: A micro electro-mechanical system (MEMS) array substrate includes a substrate, a plurality of first signal lines, a plurality of second signal lines, a plurality of MEMS switches and a plurality of pixel electrodes. The first signal lines are disposed on the substrate in parallel with one another as well as the second signal lines. The second signal lines intersect with the first signal lines, such that a plurality of pixel regions is defined on the substrate. Each MEMS switch is located at corresponding one of the intersections between the first signal lines and the second signal lines. Each pixel electrode is configured in corresponding one of the pixel regions and electrically connected with the corresponding MEMS switch Compare to thin film transistor, since the operation performance of the MEMS switches would not affected by carrier mobility and on-off current ratio, display performance of the display device can be easily improved.
Abstract: A lens assembly includes a barrel having an object-side opening and an image-forming-side opening. The barrel further has a positioning section that positions an image-forming-side surface of a lens by having line contact around an optical axis at a center. The positioning section is disposed at a position that is closer to an object side than the image-forming-side opening of the barrel is. The barrel also has an image-forming section that extends from the positioning section to a center of the optical axis along the image-forming-side surface of the lens and forms an edge of the image-forming-side opening of the barrel.
Abstract: An optical sheet comprises: a base film; a first primer layer disposed on a surface of the base film; and a projection disposed on the first primer layer, wherein a thickness of the first primer layer ranges from about 5 nm to 300 nm.
Abstract: A display system encompasses electrodes that induce a convective flow of a carrier fluid that transports a colorant species that is suspended in the carrier fluid. At least one of the convection flow, speed, and direction of the colorant species is controlled by operation of the electrodes.
March 26, 2009
Date of Patent:
September 13, 2011
Hewlett-Packard Development Company, L.P.
Jong-Souk Yeo, Gregg Alan Combs, Jeffrey Todd Mabeck, Tim R. Koch, Pavel Kornilovich, Donald Milton Hill
Abstract: An eye measurement system may include a target that moves transverse to an optical path from the target to eye, so as to relax accommodation of the lens of the eye. The target may move transverse to the optical path on a display. The patient may be fogged while the target moves transverse to the optical path, and the target may become smaller such that the patient perceives the target to be moving away from the patient. A pupil camera may measure eye position that can be correlated with the position of the target on the display to determine that the patient has maintained fixation on the moving target. A visible measurement light beam may be pulsed subsequent to and/or during motion of the target that relaxes accommodation of the eye so as to avoid visual interference of the measurement light beam with the target on the display.
Abstract: Methods and systems for determining whether an image is of a left eye or a right eye may be used to enhance laser eye surgery systems and techniques. Methods generally involve locating an iris center and/or pupil center on an image of the eye, locating a corneal vertex and/or at least one reflection on the image, and determining whether the image is of a left eye or a right eye, based on the location of the corneal vertex and/or reflection(s) relative to the iris center and/or pupil center. Systems include a laser emitting a beam of an ablative light energy and a computer processor having a computer program for determining whether the image is of a left eye or a right eye, based on a location of the corneal vertex and/or reflection(s) relative to the iris center and/or pupil center.
Abstract: Methods, devices, and systems for predicting an optical acuity measure of an optical system of an eye. An optical acuity measure can be predicted by determining a point spread function based on a wavefront measurement of an eye, convolving a resolution target with the point spread function to produce an image, and predicting the optical acuity measure of the optical system of the eye based on the image.
Abstract: There are provided a lens holder being capable of holding a lens and having flange portions at opposite end portions thereof along an optical axis, a planary-driven actuator including driving arm portions having lens holder support points for holding the outer surface of the lens holder at a plurality of opposing positions and having free-end side contact portions, a lens-holder retaining plate having spring-characteristic portions, and fixing frames which form the outer surfaces of a lens holder driving device and fix the respective components.
Abstract: A system for determining a three-dimensional location and orientation of an eye within a camera frame of reference includes a camera, an illuminator, and a processor. The camera captures an image of the eye. The illuminator generates a reflection off of a corneal surface of the eye. The processor computes a first two-dimensional location of a pupil reflection image and a corneal reflection image from the image of the eye. The processor predicts a second two-dimensional location of a pupil reflection image and the corneal reflection image as a function of a set of three-dimensional position and orientation parameters of the eye within the camera frame of reference. The processor iteratively adjusts the set until the first two-dimensional location is substantially the same as the second two-dimensional location. The set is the three-dimensional location and orientation of an eye.
Abstract: A lens barrel includes: a lens holding frame holding a lens; a barrel body housing the lens holding frame; motion conversion means for converting rotary motion of the lens holding frame into reciprocating motion along the optical axis of the lens; a manual ring provided on the outer side of the barrel body and rotating around the optical axis; a coreless stepper motor provided on the outer side of the barrel body and rotating around the optical axis; rollers provided between the manual ring and the stepper motor, and rotating in synchronization with the rotation of the manual ring and the stepper motor; motor rotation preventing means for preventing the stepper motor from rotating when the rollers transfer the rotation of the manual ring; an intermediate ring rotating around the optical axis; and a transfer unit transferring the rotary motion of the intermediate ring to the lens holding frame.
Abstract: For combining light from different light sources that are spatially apart, an optical system comprises a prism assembly that comprises a totally-internally-surface and a dichroic filter. The totally-internally-surface and the dichroic filter are configured for reflecting light of different colors or polarizations, so as to combine light of different polarization or colors into a single beam.
Abstract: A beam delivery system of a projection exposure system comprises a laser generating a beam of laser light from a plurality of longitudinal laser modes in a cavity, wherein light generated by a single longitudinal laser mode has an average line width ?lat, wherein the laser light of the beam has, at each of respective lateral positions of the beam, a second line width ?lat corresponding to lateral laser modes, and wherein the laser light of the beam has, when averaged over a whole cross section thereof, a line width ?b corresponding to plural lateral laser modes, and wherein ?m<?lat<?b, and wherein an optical delay apparatus disposed in the beam provides an optical path difference ?l, wherein 0.8 · ? 0 2 ( 2 · ? ? ? ? l ) < ? ? ? l < 1.8 · ? 0 2 ( 2 · ? ? ? ? l ) , wherein ?0 is an average wavelength of the light of the first beam of laser light, and ??lat represents the second line width.
Abstract: A fully automated optic nerve head assessment system, based on spectral domain optical coherence tomography, provides essential disc parameters for clinical analysis, early detection, and monitoring of progression.
April 21, 2009
Date of Patent:
August 9, 2011
University of Pittsburgh - Of the Commonwealth System of Higher Education
Juan Xu, Chaim-Gadi Wollstein, Hiroshi Ishikawa, Joel Steven Schuman