| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359579000 | By nonmovable driving element (e.g., piezoelectric, magnetostrictive) | 12 |
| 20080297903 | METHOD FOR DRIVING PIEZOELECTRIC ELEMENT OR OPTICAL MODULATOR INCLUDING PIEZOELECTRIC ELEMENT - Disclosed are a method for driving a piezoelectric element or an optical modulator including a piezoelectric element and a recorded medium recorded with a program for executing the same. In accordance with an embodiment of the present invention, the method for driving a piezoelectric element causing a displacement object to be displaced by being contracted or expanded according to a supplied driving voltage, including supplying a driving signal to the piezoelectric element during a first driving period in a first voltage range; supplying a control signal for controlling a polarization hysteresis of the piezoelectric element according to a driving, performed during the first driving period, to the piezoelectric element; and supplying the driving signal to the piezoelectric element during a second driving period in a second voltage range. | 12-04-2008 |
| 20090040616 | Fabry-perot piezoelectric tunable filter - Disclosed is a microelectromechanically tunable Fabry-Perot device and method of manufacturing tunable Fabry-Perot device and method of manufacturing. The F-P device comprises a first and second substrate which has partially reflective planar surfaces, and the partially reflective planar surfaces are separated by a predetermined separation distance and aligned to provide a F-P cavity, where one or more piezoelectric members are adapted to displace the first and second substrates when an electric field is applied. | 02-12-2009 |
| 20100118405 | TELESCOPING CYLINDRICAL PIEZOELECTRIC FIBER COMPOSITE ACTUATOR ASSEMBLIES - Actuator assemblies are formed by at least one cylinder where each cylinder is formed by at least one piezoelectric fiber composite actuator adapted to have actuation energy applied thereto. | 05-13-2010 |
| 20100142054 | Wavelength or polarization sensitive optical assembly and use thereof - In an optical assembly having a light source which provides two optically different light components with essentially planar wavefronts on an optical axis, wherein the light components differ at least in their wavelength; in the case of an objective lens which projects the two optically different light components into a projection space; and in the case of an optical component which is arranged on the optical axis and has an plane through which the wavefronts of the two light components pass and in which at least two different areas of the optical component with different dispersion behaviors n(λ) abut against one another in the lateral direction with respect to the optical axis; the optical component causes phase shifts of the wavefronts of the two light components, wherein the phase shift of the wavefronts of the one light component differs by at least one quarter of the wavelength of that light component between the two different areas, and wherein the phase shift of the wavefronts of the other light component does not differ between the two different areas, such that an intensity distribution of the one light component in the projection space by interference with itself differs from an intensity distribution of the other light component in the projection space. | 06-10-2010 |
| 20100246010 | METHOD OF CONTROLLING INCLINATION ANGLE OF FABRY-PEROT TUNABLE FILTERS - Fabry-Perot tunable filters is provided with a first fixed semitransparent mirror and a second movable semitransparent mirror arranged against each other, and piezoelectric elements more than three arranged at an equi-interval on the second movable semitransparent mirror to change a space between the first and second semitransparent mirrors. The second movable semitransparent mirror is adapted to be rotated by using as a pivot an imaginary axis toward which each length of perpendiculars let fall from each of the piezoelectric elements on a plane parallel to the second movable semitransparent mirror and including the imaginary axis connected between arbitrary two points of each middle point between the adjacent piezoelectric elements is equal each other. | 09-30-2010 |
| 20100296164 | VARIABLE SPECTROSCOPIC ELEMENT AND ENDOSCOPE SYSTEM HAVING THE SAME - Light in a desired wavelength band is accurately separated by changing the distance between optical substrates while minimizing deformation thereof. A variable spectroscopic element ( | 11-25-2010 |
| 20110299166 | Thermally Tunable Optical Filter with Single Crystalline Spacer Fabricated by Fusion Bonding - A thermally tunable Fabry-Perot optical filter includes a single crystalline sheet resistance heater layer. A single crystalline semiconductor spacer layer is positioned proximate to and in thermal communication with the single crystalline sheet resistance heater layer. A first distributed Bragg reflector is positioned proximate to a first surface of the single crystalline semiconductor spacer layer. A second distributed Bragg reflector is positioned proximate to a second surface of the single crystalline semiconductor spacer layer. | 12-08-2011 |
| 20120212824 | OPTICAL MODULE AND ELECTRONIC APPARATUS - An optical module (colorimetry sensor) includes an interference filter, and a transparent substrate to which a first substrate of the interference filter is fixed, having a second thermal expansion coefficient which has a value different from a first thermal expansion coefficient. The interference filter is fixed to the transparent substrate through an adhesive layer made of gel-like resin, and the adhesive layer alleviates stress generated due to a difference in the thermal expansion coefficients between the interference filter and the transparent substrate. | 08-23-2012 |
| 20140233103 | OPTICAL MODULE AND ELECTRONIC APPARATUS - An optical module (colorimetry sensor) includes an interference filter, and a transparent substrate to which a first substrate of the interference filter is fixed, having a second thermal expansion coefficient which has a value different from a first thermal expansion coefficient. The interference filter is fixed to the transparent substrate through an adhesive layer made of gel-like resin, and the adhesive layer alleviates stress generated due to a difference in the thermal expansion coefficients between the interference filter and the transparent substrate. | 08-21-2014 |
| 20140240838 | ETALON AND ETALON DEVICE - An etalon has a pair of transparent components; a ring-shaped piezoelectric member which is provided between the pair of transparent components, which is bonded to the pair of transparent components, and which is provided with metal films on the surfaces which face the transparent component sides; and the external connecting terminals which are provided on the transparent components and which are connected to the metal films. | 08-28-2014 |
| 20140362442 | TUNABLE OPTICAL FILTER - Methods, systems, and apparatus for optical fiber communications. One tunable optical filter includes a light inputting assembly and a light receiving assembly; an adjustable cavity length assembly arranged between the light inputting assembly and the light receiving assembly, wherein the adjustable cavity length assembly includes an adjustable length device, a first substrate, and a second substrate, wherein the first substrate and the second substrate are positioned parallel to each other and are fixed at respective ends of the adjustable length device; and a Fabry-Perot filter arranged in the adjustable cavity length assembly, the Fabry-Perot filter including a first component which is fixed on the first substrate, and a second component which is fixed on the second substrate, the first component includes a reflecting surface facing the second substrate and the second component includes a reflecting surface facing the first substrate. | 12-11-2014 |
| 20150085367 | Tunable Optical Filter and Method of Manufacture Thereof - A tunable optical filter is formed in the structure of an etalon. A thin electro-optic ceramic substrate is fixed between two end substrates. Each end substrate has an inner parallel surface toward said electro-optic ceramic substrate covered by an electrode layer and a reflecting layer. An adhesive which attaches the electro-optic ceramic substrate to each first and second end substrates has a consistency so as to avoid stress on the electro-optic ceramic substrate. A voltage imposed on the electro-optic ceramic substrate by the electrode layers on the inner parallel surfaces of the first and second end substrates effectively controls an optical distance between the reflective coating layers on the inner parallel surfaces of the first and second end substrates of the etalon structure. The electro-optic ceramic substrate is preferably PMN-PT ((1-x)Pb (Mg | 03-26-2015 |
