Abstract: A microwave heating cooker (1) is an example of a dielectric heating apparatus. The microwave heating cooker (1) includes a door that opens and closes a heating chamber, and a high-frequency power supply (10). The high-frequency power supply (10) includes: a high-frequency oscillation circuit (6); at least one semiconductor amplifier (3, 4) for amplifying a high-frequency signal from the high-frequency oscillation circuit (6); a door switch (9) (open/close detection unit) for detecting whether the door is open or closed; and a control unit (20) that stops the high-frequency oscillation circuit (6) when the door is opened.

Abstract: A display device includes a chassis 14, a frame 13, a photo curable resin member 30a, 30b, and a heat dissipation member 19. The frame 13 includes a portion supporting the light guide plate 16 from a side of a light exit surface 16asuch that the light guide plate 16 slides. The photo curable resin member 30a, 30bis arranged between an LED board 18 and the light guide plate 16 and fixed thereto to maintain a distance between a mount surface 18a of the LED board 18 and a light entrance surface 16b of the light guide plate 16. The heat dissipation member 19 having a heat dissipation property is arranged apart from the frame 13 and includes a board attachment portion 19a to which the LED board 18 is attached and a plate-like portion 19b. The plate-like portion 19b extends from the board attachment portion 19a toward the light guide plate 16. The plate-like portion 19b is a plate spring including a portion being elastically in contact with a second bottom plate 14b.

Abstract: A functional water generator capable of making best use of functional water generated in an electrolysis vessel is provided.

Abstract: A display device includes a chassis 14, a frame 13, a photo curable resin member 30a, 30b, and a heat dissipation member 19. The frame 13 includes a portion supporting the light guide plate 16 from a side of a light exit surface 16a such that the light guide plate 16 slides. The photo curable resin member 30a, 30b is arranged between an LED board 18 and the light guide plate 16 and fixed thereto to maintain a distance between a mount surface 18a of the LED board 18 and a light entrance surface 16b of the light guide plate 16. The heat dissipation member 19 having a heat dissipation property is arranged apart from the frame 13 and includes a board attachment portion 19a to which the LED board 18 is attached and a plate-like portion 19b. The plate-like portion 19b extends from the board attachment portion 19a toward the light guide plate 16. The plate-like portion 19b is a plate spring including a portion being elastically in contact with a second bottom plate 14b.

Abstract: This backlight device (illumination device) (12) is provided with: a plurality of LEDs (light sources) (17) arranged in a row at intervals; a light-guide plate (16) having a light-receiving surface (16b) that is arranged opposing the LEDs (17) and that receives light from the LEDs (17) and a light-emitting surface (16a) from which the light that entered is emitted; a reflective sheet (reflective member) (20) arranged so as to cover the surface of the light-guide plate (16) opposite to the light-emitting surface (16a) and that reflects light toward the light-emitting surface (16a); and an extended reflective part (26) provided in an edge portion of the reflective sheet (20), the extended reflective part (26) extending toward the LEDs (17) from the light-receiving surface (16b), the extended reflective part (26) having openings (27) formed therein that correspond to the arrangement pattern of the LEDs (17), thereby being arranged corresponding to the non-arrangement pattern where the LEDs (17) are not provided.

Abstract: Provided is an illumination device that is capable of improving the utilization efficiency of light, while being lighter and thinner. This illumination device (10) is provided with: a light source (11) that emits ultraviolet light; a light guide plate (14) that guides the light from the light source; an optical member (15) placed between the light source and the light guide plate and that allows ultraviolet light emitted from the light source to pass through and that reflects visible light; and a fluorescent member (16) that is arranged between an ultraviolet light incident surface (15d) of the optical member and the light guide plate and that converts the ultraviolet light into visible light.

Abstract: An edge-light type backlight device includes: a light guide plate that is housed in a frame-shaped member; a long wiring substrate 60 that is positioned at least on one side face of the light guide plate; a plurality of point-shaped light sources 80 that are positioned in the wiring substrate 60; and a rectangular heat spreader 70 that is positioned along the wiring substrate 60 and that dissipates the heat of the wiring substrate 60. The wiring substrate 60 and the heat spreader 70 are fixed to each other by screws 65 that are disposed on both ends in the lengthwise direction of the heat spreader 70, and are adhered to each other via a double-sided adhesive tape 75 that is positioned in the central portion of the heat spreader 70 in the lengthwise direction thereof.

Abstract: Provided is an illumination device that is capable of improving the utilization efficiency of light, while being lighter and thinner. This illumination device (10) is provided with: a light source (11) that emits ultraviolet light; a light guide plate (14) that guides the light from the light source; an optical member (15) placed between the light source and the light guide plate and that allows ultraviolet light emitted from the light source to pass through and that reflects visible light; and a fluorescent member (16) that is arranged between an ultraviolet light incident surface (15d) of the optical member and the light guide plate and that converts the ultraviolet light into visible light.

Abstract: An optical pickup apparatus includes a diffraction grating having a grating constant that is entirely uniform. The duty ratio referred to as L/G duty that is the ratio between a land L and a groove G and defined by the expression UG duty (%)=L/(L+G)×100 is continuously changed in the direction orthogonal to grating grooves of the diffraction grating. For example, the L/G duty ratio is set close to 50% in a central portion of the diffraction grating while the duty is set close to 100% in an outer peripheral portion of the diffraction grating. Accordingly, the number of components of the optical pickup is reduced while loss in light quantity in recording and reproduction can be minimized.

Abstract: A shock absorber includes a projection that projects toward an optical disk and projects out of a surface of an objective lens facing the optical disk to prevent collision of the objective lens and the optical disk. The shock absorber has a surface resistivity of not more than 1010 ? at least for the projection. In this way, the shock absorber (projection) will not be electrified when the optical disk and the shock absorber (projection) collide with each other, and accordingly the shock absorber (projection, in particular) does not attract dust or particles. As a result, the dust or particles do not damage the optical disk even when the optical disk and the shock absorber (projection) collide again.

Abstract: An object of the present invention is to provide an optical pickup device which improves resolution of reproduced signals without increasing the number of components, and does not require positional adjustment of a grating during assembly of the optical pickup device. For this purpose, the optical pickup device of the present invention includes a semiconductor laser 1, a grating 3, an objective lens 5, and a push-pull signal detecting section 10. The grating 3 divides a light beam emitted from the semiconductor laser 1 into a 0-order diffracted beam, and a pair of ±1st-order diffracted beams. The grating 3 is set so that a reduction rate of light intensity for the 0-order diffracted beam is decreased and intensities of the pair of ±1st-order diffracted beams are decreased from a vicinity of an optical axis toward periphery parts.

Abstract: A shock absorber includes a projection that projects toward an optical disk and projects out of a surface of an objective lens facing the optical disk to prevent collision of the objective lens and the optical disk. The shock absorber has a surface resistivity of not more than 1010 &OHgr; at least for the projection. In this way, the shock absorber (projection) will not be electrified when the optical disk and the shock absorber (projection) collide with each other, and accordingly the shock absorber (projection, in particular) does not attract dust or particles. As a result, the dust or particles do not damage the optical disk even when the optical disk and the shock absorber (projection) collide again.

Abstract: In an optical transmission and reception module, a partitioning member separating a light emitting device and a light receiving device from each other includes a partitioning plate having a concave surface, an engaging portion to which the partitioning plate is fixed, a holding portion holding the engaging portion movably, and a leaf spring for pressing the engaging portion against an optical plug. An end surface of an optical fiber is convex and projects from a front end of the optical plug. When the end surface of the optical plug is in contact with an engaging surface of the engaging portion, a gap is generated between the end surface of the optical fiber and a surface opposed thereto.

Abstract: In an optical transmission and reception module, a partitioning member separating a light emitting device and a light receiving device from each other includes a partitioning plate having a concave surface, an engaging portion to which the partitioning plate is fixed, a holding portion holding the engaging portion movably, and a leaf spring for pressing the engaging portion against an optical plug. An end surface of an optical fiber is convex and projects from a front end of the optical plug. When the end surface of the optical plug is in contact with an engaging surface of the engaging portion, a gap is generated between the end surface of the optical fiber and a surface opposed thereto.

Abstract: In an optical transmission and reception module, a partitioning member separating a light emitting device and a light receiving device from each other includes a partitioning plate having a concave surface, an engaging portion to which the partitioning plate is fixed, a holding portion holding the engaging portion movably, and a leaf spring for pressing the engaging portion against an optical plug. An end surface of an optical fiber is convex and projects from a front end of the optical plug. When the end surface of the optical plug is in contact with an engaging surface of the engaging portion, a gap is generated between the end surface of the optical fiber and a surface opposed thereto.

Abstract: An aperture for shielding scattered light having an intensity of less than 1/e2 of a peak value included in laser light emitted from a semiconductor laser is provided at a cap which houses a semiconductor laser and a photoreceptor. A semiconductor laser unit having less stray light incident and detected by the photoreceptor is provided by restraining light subjected to the Fresnel reflection in a hologram device located close to a light source.

Abstract: In an optical transmit-receive module, an optical fiber plug connected with an optical fiber for optical transmission is removably inserted in a housing. Within the housing, there are provided a branching type light guide, and an optical semiconductor device giving an optical signal to the branching type light guide and receiving an optical signal from the branching type light guide. When the optical fiber plug is inserted in the housing, it is optically connected with the branching type light guide through a light-permeable member having a refractive index approximately equal to refractive indices of the optical fiber and the branching type light guide.