Patent application number | Description | Published |
20090180167 | OPTICAL DEFLECTOR - An optical deflector includes a mirror having a reflective plane; a torsion bar extending outwardly from a side of said mirror; a support surrounding said mirror; a piezoelectric cantilever including a supporting body and a piezoelectric body formed on the supporting body, one end of said piezoelectric cantilever being connected to said torsion bar, the other end of the piezoelectric cantilever being connected to said support, said piezoelectric cantilever, upon application of a driving voltage to the piezoelectric body, exhibiting a bending deformation due to piezoelectricity so as to rotate said torsion bar, thereby rotarily driving said mirror through said torsion bar; and an impact attenuator connected to said support, the impact attenuator being disposed in a gap between said mirror and said support. | 07-16-2009 |
20090185253 | OPTICAL DEFLECTOR - An optical deflector includes a mirror having a reflective plane; a torsion bar extending outwardly from an end of said mirror; a support surrounding said mirror; a first piezoelectric element, one end of said first piezoelectric element being connected to said torsion bar, the other end of the first piezoelectric element being connected to and supported by said support, said first piezoelectric element having at least one piezoelectric cantilever, the cantilever including a supporting body and a piezoelectric body formed on the supporting body to exhibit bending deformation due to piezoelectricity when a driving voltage is applied to the piezoelectric body, said piezoelectric element rotarily driving said mirror through said torsion bar when said driving voltage is applied; and a second piezoelectric element, one end of said second piezoelectric element being connected to said torsion bar, the other end of the second piezoelectric element being connected to and supported by said mirror. | 07-23-2009 |
20090323151 | OPTICAL DEFLECTOR - An optical deflector includes a mirror having a reflective plane; a torsion bar extending outwardly from a side of said mirror; a support surrounding said mirror; a piezoelectric cantilever including a supporting body and a piezoelectric body formed on the supporting body, one end of said piezoelectric cantilever being connected to said torsion bar, the other end of the piezoelectric cantilever being connected to said support, said piezoelectric cantilever, upon application of a driving voltage to the piezoelectric body, exhibiting a bending deformation due to piezoelectricity so as to rotate said torsion bar, thereby rotarily driving said mirror through said torsion bar; and an impact attenuator connected to said support, the impact attenuator being disposed in a gap between said mirror and said support. | 12-31-2009 |
20100245966 | ACTUATOR DEVICE FOR OPTICAL DEFLECTOR - An actuator device for optical deflector includes a base for mounting an optical deflector deflecting a light beam from a light source, at least one piezoelectric actuator translating and vibrating said base; and a supporting body supporting said piezoelectric actuator. | 09-30-2010 |
20120327678 | VEHICLE HEADLAMP INCLUDING TWO-DIMENSIONAL OPTICAL DEFLECTOR - A headlamp for a vehicle includes a light source adapted to emit a spotlight, a lens adapted to receive and transmit the spotlight, a lens actuator adapted to adjust a size of the spotlight transmitted through the lens, a two-dimensional optical deflector adapted to deflect the spotlight from the lens to an illumination area ahead of the vehicle, and a control circuit configured to control the lens actuator in such a way that irregularity of illumination in the illumination area is avoided. | 12-27-2012 |
Patent application number | Description | Published |
20090026472 | Silicon LED package having horn and contact edge with (111) planes | 01-29-2009 |
20120075221 | TOUCHSCREEN PANEL INPUT DEVICE MANUFACTURING METHOD, PIEZOELECTRIC ELEMENT AND TOUCHSCREEN PANEL INPUT DEVICE - A touchscreen panel input device is manufactured by forming a first adhesion layer and a second adhesion layer on a growth substrate, removing only the second adhesion layer from a selected region by irradiating laser, forming a growth base layer on the selected region where the second adhesion layer is removed and on the second adhesion layer and an oxide thin film having piezoelectricity on the growth base layer, transferring the oxide thin film layer on the selected region to a second substrate having first transparent electrodes by peeling-off, and adhering the second substrate to a third substrate having second transparent electrodes by placing the transferred oxide thin film layer between them. The touchscreen panel input device detects a pushing pressure in addition to a touch position with proving a tactile feedback. | 03-29-2012 |
20120224240 | DRIVER FOR OPTICAL DEFLECTOR USING COMPLEX-SINUSOIDAL-WAVE DRIVE VOLTAGES AND METHOD FOR SETTING THE SAME - A driver for driving an optical deflector includes a mirror, a movable frame for supporting the mirror, a support body surrounding the movable frame, and a first group of piezoelectric actuators and a second group of piezoelectric actuators alternating with the first group of piezoelectric actuators. A first drive voltage for the first group of piezoelectric actuators has first repeated waves each with a first rising period. A second drive voltage for the second group of piezoelectric actuators has second repeated waves each with a second falling period corresponding to the first rising period of the first drive voltage and a second rising period corresponding to the first falling period of the first drive voltage. Frequencies of the first and second repeated waves exclude natural frequencies of a mechanically-vibrating system of the mirror with respect to the axis thereof depending upon the piezoelectric actuators. | 09-06-2012 |
20130083381 | OPTICAL DEFLECTOR APPARATUS INCLUDING OPTICAL DEFLECTOR CHIP SANDWICHED BY TWO SUBSTRATES - In an optical deflector apparatus, an optical deflector chip includes a mirror, an actuator adapted to rock the mirror, and first pads on a front surface of the optical deflector chip and connected to the actuator. A first substrate includes second pads on a back surface of the first substrate, and an opening is formed in the first substrate. The front surface of the optical deflector chip is adhered to the back surface of the first substrate in such a way that the first pads of the optical deflector chip are in contact with respective ones of the second pads of the first substrate and the mirror opposes the opening. A back surface of said optical deflector chip is adhered to a front surface of a second substrate. | 04-04-2013 |
20130084661 | METHOD FOR MANUFACTURING OPTICAL DEFLECTOR FOR FORMING DICING STREET WITH DOUBLE ETCHING - A wafer-level optical deflector assembly is formed on a front surface side of a wafer. Then, the front surface side of the wafer is etched by using elements of the wafer-level optical deflector assembly, to form a front-side dicing street. Then, a transparent substrate with an inside cavity is adhered to the front surface side of the wafer. Then, a second etching mask is formed on a back surface side of the wafer. Then, the back surface side of the wafer is etched to create a back-side dicing street. Then, an adhesive sheet with a ring-shaped rim is adhered to the back surface side of the wafer. Then, the transparent substrate is removed. Finally, the ring-shaped rim is expanded to widen the front-side dicing street and the back-side dicing street to pick up optical deflectors one by one from the wafer. | 04-04-2013 |
20140355088 | OPTICAL DEFLECTOR INCLUDING SEPARATED PIEZOELECTRIC PORTIONS ON PIEZOELECTRIC ACTUATORS AND ITS DESIGNING METHOD - In an optical deflector including a mirror, a frame, torsion bars, first and second piezoelectric actuators coupled to both of the torsion bars, and first and second coupling bars, each of the first and second piezoelectric actuators is divided into first, second and third areas in accordance with a polarization polarity distribution obtained by performing a simulation upon the optical deflector where piezoelectric portions with no slits are hypothetically provided in the first and second piezoelectric actuators while a predetermined rocking operation is performed upon the mirror. First piezoelectric portions are formed in the first and third areas of the first piezoelectric actuator, and second piezoelectric portions are formed in the first and third areas of said second piezoelectric actuator. A first drive voltage applied to the first piezoelectric portions is opposite in phase to a second drive voltage applied to the second piezoelectric portions. | 12-04-2014 |
20150077824 | OPTICAL DEFLECTING MIRROR DEVICE HAVING FIGURE "8"-SHAPED RIB AND OPTICAL DEFLECTOR - An optical deflecting mirror device includes a circular or elliptical mirror with a reflective front surface, and a figure “8”-shaped reinforcement rib provided on a rear surface of the mirror symmetrically along a rocking axis of the mirror. The figure “8”-shaped reinforcement rib includes two ring-shaped reinforcement ribs coupled to each other along the rocking axis. | 03-19-2015 |
Patent application number | Description | Published |
20080217640 | Semiconductor Light emitting device, LED package using the same, and method for fabricating the same - A semiconductor light emitting device is provided which can prevent the reflectance of a metal film from deteriorating due to heat aging and can prevent wire bonding performance of the semiconductor light emitting element from deteriorating due to the diffusion of Ni contained in a Ni barrier metal layer to the reflection layer during die-bonding of the semiconductor light emitting element. The semiconductor light emitting device includes a metal film formed on a substrate and a semiconductor light emitting element. The metal film includes a barrier metal layer configured to prevent a predetermined material from being diffused into the substrate, a metal layer formed on the barrier metal layer; and a reflection layer formed on the metal layer. The reflection layer is configured to reflect light emitted from the semiconductor light emitting element, and the metal layer is made of Ti or Pd. | 09-11-2008 |
20080225363 | OPTICAL DEFLECTOR AND OPTICAL DEVICE - An optical deflector includes a plurality of piezoelectric unimorph oscillating bodies ( | 09-18-2008 |
20120063117 | LIGHT SOURCE APPARATUS - Provided is a light source apparatus having a phosphor layer | 03-15-2012 |
20120218615 | LIGHT SCATTERING ELEMENT, OPTICAL SCANNING DEVICE, AND IMAGE DISPLAYING DEVICE - A light scattering element | 08-30-2012 |
20130258432 | OPTICAL DEFLECTOR - An optical deflector is provided which can effectively suppress occurrence of a ringing phenomenon when a piezoelectric actuator is driven with a voltage signal of a sawtooth waveform. An optical deflector A | 10-03-2013 |