Abstract: The present invention is a laser light source device having: a silicon substrate having a first flat surface and a second flat surface which is formed at a position lower than the first flat surface by a level difference in the thickness direction; a first junction having a microbump structure comprising Au formed on the first flat surface; a second junction having a microbump structure comprising Au formed on the second flat surface; a first optical element and a second optical element for emitting laser light, which are joined to the first junction by a surface activation technique; a reflective member for reflecting the laser light from the first optical element toward a multiplexer, the reflective member being joined to the second junction by the abovementioned technique; and a multiplexer for directly receiving the laser light from the second optical element and multiplexing the laser light from the first optical element and the laser light from the second optical element, the multiplexer being joined to

Abstract: An object of the present invention is to provide a laser light source that includes a laser element and an optical element that are optically coupled efficiently and directly. A laser light source includes, a laser element which has a ridge part and emits laser light from a light emission part, an optical element which has a waveguide for guiding the laser light that is incident on an incidence part; and a substrate for joining the laser element and the optical element close so as to be optically coupled directly, and, in this laser light source, the laser element and the optical element are joined to the substrate in a state in which a position of the incidence part is shifted a predetermined distance upward or downward with respect to a position of the light emission part.

Abstract: Provided is a light source device having optical fiber arrays arranged so that different sets of RGB laser lights are focused at different depth positions, while enhancing the efficiency of light utilization. The light source device includes a plurality of optical devices each of which generate red, green, or blue laser light, a plurality of first, second, and third optical fibers through each of which the red, green, or blue laser light from a corresponding one of the plurality of optical devices is guided, and a fiber bundle combiner which forms a fiber bundle by fixedly holding together end portions of the plurality of first, second, and third optical fibers in such a manner that a plurality of optical fiber sets, each comprising three optical fibers one from the first optical fibers, one from the second optical fibers, and one from the third optical fibers, are stacked in layers.

Abstract: Provided is a laser module wherein any defective laser device can be isolated by performing burn-in on laser devices mounted on a mounting substrate. The laser module includes laser devices that emit laser light, a driver IC for driving the laser devices, a mounting substrate on which the laser devices and the driver IC are mounted, a common electrode terminal to which a common electrode of the laser devices is connected, individual electrode terminals to which individual electrodes of the laser devices are respectively connected, driver terminals to which the driver IC is connected, and test terminals which are respectively connected to the common electrode terminal and the individual electrode terminals, and to which an external power supply is to be connected when performing burn-in of the laser devices, wherein the number of the laser devices and the number of the test terminals are each larger than the number of the driver terminals.

Abstract: Provided is an information input device whereby visible laser light which projects an information input image is prevented from irradiating a face or an eye.

Abstract: An integrated device includes an optical element and an electrical element that are implemented on a substrate. The optical element and the electrical element are bonded by surface-activated bonding technology to a bonding portion that is formed on the substrate and made of metal material.

Abstract: The present invention is a laser light source device having: a silicon substrate having a first flat surface and a second flat surface which is formed at a position lower than the first flat surface by a level difference in the thickness direction; a first junction having a microbump structure comprising Au formed on the first flat surface; a second junction having a microbump structure comprising Au formed on the second flat surface; a first optical element and a second optical element for emitting laser light, which are joined to the first junction by a surface activation technique; a reflective member for reflecting the laser light from the first optical element toward a multiplexer, the reflective member being joined to the second junction by the abovementioned technique; and a multiplexer for directly receiving the laser light from the second optical element and multiplexing the laser light from the first optical element and the laser light from the second optical element, the multiplexer being joined to

Abstract: Provided is a projection apparatus that can enhance the efficiency of utilization of RGB laser lights, eliminate positional displacement in projection point caused by spaced-apart fiber cores emitting the laser lights, and detect additional information while projecting an image with the laser lights. The projection apparatus includes a laser light source emitting infrared and RGB laser lights, a fixing device fixing end portions of an infrared-light fiber and colored-light fibers used to transmit the infrared and RGB laser lights, a scanning unit projecting an image on a projection surface by scanning the projection surface with the RGB laser lights emitted from the end portions of the colored-light fibers, a detection unit detecting reflection of the infrared laser light emitted from the end portion of the infrared-light fiber, and a control unit controlling emission of the RGB laser lights from the light source, based on information detected by the detection unit.

Abstract: The invention is directed to the provision of an optical integrated device wherein provisions are made to be able to mount components on a substrate with high accuracy and high packing density without having to heat the components. The optical integrated device includes a substrate, an optical device optically coupled to a first device, and an electrical device mounted on top of the optical device or on top of a second device, wherein the optical device is bonded to the substrate by surface activated bonding via a first bonding portion formed from a metallic material on the substrate, and the electrical device is bonded to the optical device or the second device by surface activated bonding via a second bonding portion formed from a metallic material on the optical device or the second device.

Abstract: The invention provides an optical device and an optical device manufacturing method wherein provisions are made to be able to precisely align an optical fiber relative to a substrate without heating the substrate and to maintain the optimum alignment condition for an extended period of time. More specifically, the invention provides an optical device manufacturing method which includes the steps of forming a first metallic film on a portion of a substrate, forming a second metallic film on a portion of the outer circumference of an optical fiber, and bonding together the first metallic film and the second metallic film by surface activated bonding, and an optical device manufactured by such a manufacturing method.

Abstract: A laser light source according to the present invention includes a laser element that outputs a fundamental wave; a wavelength conversion element into which the fundamental wave is input and that converts at least a part of the fundamental wave input therein to a converted wave having a wavelength shorter than the wavelength of the fundamental wave; a waveguide that attenuates a component of the fundamental wave included in an output wave from the wavelength conversion element; and a diffraction grating that is formed on the waveguide and feeds back the fundamental wave output from the wavelength conversion element to lock the wavelength or the frequency of the fundamental wave output from the laser element. The diffraction grating is formed at a position determined taking into account an amount by which the fundamental wave is attenuated in the waveguide.

Abstract: A laser light source (100) includes a laser element (102) that emits a fundamental wave, a wavelength converting element (104) that performs wavelength conversion on the fundamental wave emitted from the laser element (102) and outputs the converted wave, and an optical waveguide (103) that guides the light output from the wavelength converting element (104). The optical waveguide (103) has a direction changing portion (113) that changes the travel direction of the guided light. The direction changing portion (113) has a function of transmitting the converted wave alone and of not transmitting the fundamental wave.

Abstract: A wavelength conversion device includes a base substrate having a transparent electrode on one surface thereof and a ferroelectric single crystal substrate provided with an optical waveguide. The ferroelectric single crystal substrate has an insulating film formed on one surface and is bonded to the base substrate such that the insulating film faces the transparent electrode.

Abstract: The invention is directed to the provision of an optical device in which provisions are made to form a gap between an optical waveguide and a substrate without having to form a groove or the like in the substrate and to prevent any stress from being applied to an optical element even when it is heated by a heater for temperature adjustment. More specifically, the invention provides an optical device includes a substrate, an optical element with an optical waveguide formed in a surface thereof that faces the substrate, bonding portions formed on the substrate at positions that oppose each other across the optical waveguide, a heater, formed on at least one of the optical element and the substrate, for heating the optical waveguide, and a micro bump structure formed from a metallic material, wherein the optical element is bonded to the bonding portions via the micro bump structure in such a manner that a gap is formed between the optical waveguide and the substrate.

Abstract: A light source unit (110) emits linearly polarized laser light of a given wavelength. A wave plate (121) transmits the laser light emitted from the light source unit (110) and has a phase delay axis of which the direction is adjusted to about 0 degrees with respect to the polarization direction (101) of the laser light. A liquid crystal cell (123) transmits laser light that has passed through the wave plate (121) and by a switchable rotation amount, rotates the polarization direction (101) of the laser light transmitted through the liquid crystal cell (123). A wave plate (125) transmits laser light that has passed through the liquid crystal cell (123); and further has a phase delay axis of which the direction is adjusted to about 0 degrees with respect to the polarization direction (101) of the laser light.

Abstract: In a light source device for combining light waves with at least three wavelengths and outputting thus combined light waves, an optical system element and an electrical system element are formed on a semiconductor substrate, thereby eliminating the necessity of optical members such as an optical connector, and saving space to place the optical members as well as reducing arrangement spacing. In addition, the space necessary for wiring in an electrical circuit is reduced. Therefore, an integration degree of each of the elements, the optical system element and the electrical system element, is enhanced. The optical system element and the electrical system element are formed in layers on the same conductor substrate, thereby reducing the area that is required in configuring a parallel establishment of the optical system element and the electrical system element.

Abstract: The present invention is directed to the provision of an information input apparatus that can change the projection position of an input image by tracking a target object and can detect an information input to the input image. More specifically, the invention provides an information input apparatus includes a projection unit which projects an input image, a projection position changing unit which changes the projection position of the input image, a detection sensor which detects the position of a detection target, and an information detection unit which causes the projection position changing unit to change the projection position of the input image by tracking the position of the detection target detected by the detection sensor, and which detects an information input to the input image based on data supplied from the detection sensor.

Abstract: A laser light source includes a laser element that outputs a fundamental wave; a wavelength conversion element to which the fundamental wave is input and that wavelength-converts at least a portion of the input fundamental wave to a converted wave having a wavelength shorter than the fundamental wave; a first waveguide that guides an output wave from the wavelength conversion element; a second waveguide that attenuates and guides a component of the fundamental wave included in the output wave from the first waveguide; a diffraction grating that is formed in the first waveguide and locks a wavelength or a frequency of the fundamental wave output from the laser element by feeding back the fundamental wave output from the wavelength conversion element.

Abstract: In an optical device 1 in which a wavelength converting element 20 is disposed as an optical element on a silicon substrate 10, configuration includes heaters 40a and 40b formed on the silicon substrate 10; and micro bumps 30a, 30b that are made of Au, that bond the silicon substrate 10 and the wavelength converting element 20, and that transfer the heat generated by the heaters 40a, 40b to the wavelength converting element 20.

Abstract: A laser source includes a laser device configured to emit laser light at a given angle with respect to a normal of an output end face; and an optical device configured to include an optical waveguide that guides and outputs the laser light. The output end face of the laser device is parallel to an input end face of the optical device, and the optical waveguide extends in a direction of ?w1 that is given by ?w1=arcsin(sin ?a1/nF), where ?a1 denotes an outgoing angle of the laser light from the laser device, and nF denotes an effective refractive index of the optical waveguide for the laser light.