Abstract: A display device includes: a light source section; an optical modulator modulating light from the light source section based on a picture signal, to emit modulated light as picture light; a direct-view display section performing direct-view display based on the picture light; a projection optical system performing projection display on a projection screen based on the picture light; an optical member allowing the picture light from the optical modulator to travel toward at least one of the direct-view display section and the projection optical system; and a switching section performing control of traveling direction of the picture light on the optical member, to switch between two or more display modes which are selected, to include a two-way display mode, from a group consisting of a direct-view display mode, a projection display mode, and the two-way display mode.

Abstract: A display device includes: a light source section; an optical modulator modulating light from the light source section based on a picture signal, to emit modulated light as picture light; a direct-view display section performing direct-view display based on the picture light; a projection optical system performing projection display on a projection screen based on the picture light; an optical member allowing the picture light from the optical modulator to travel toward at least one of the direct-view display section and the projection optical system; and a switching section performing control of traveling direction of the picture light on the optical member, to switch between two or more display modes which are selected, to include a two-way display mode, from a group consisting of a direct-view display mode, a projection display mode, and the two-way display mode.

Abstract: A compact and light flying head type magneto-optical head apparatus is provided. The magneto-optical head apparatus (1) of the present invention comprises a suspension (12) whose one end is fixed to a lower surface of an arm (11), a slider (13) fixed to a free end of the suspension (12), and a magnetic modulation coil (14) and an object lens (15) mounted on the slider (13). The slider (13) mounted with the magnetic modulation coil (14) and the object lens (15) floats due to a wind pressure caused by rotation of an MO disk (3). The magneto-optical head apparatus (1) is further provided with a collimeter lens (21) between a light source (71) and the object lens (15) in a hybrid optical apparatus (7) provided to the arm (11), and a position of the collimeter lens (21) can be adjusted vertically along an optical axis O-O by a collimeter actuator (23), so that optical conditions between the light source (71) and the object lens (15) are improved.

Abstract: An optical pickup device and optical disc apparatus of the present invention include an optical element that prevents the incidence of light on unnecessary portions of the optical element so that stray light and noise are eliminated. The optical element include at least one substrate having a plurality of lens substrates that have embedded lenses made of a material with a higher refractive index than the at least one substrate. A shielding means limits the optical path so that incident light propagates only within a prescribed optical path formed on a light incidence-side or emission-side surface of one of the lens substrates. In addition, the shielding means is formed from an absorptive or reflective film placed in a region outside the prescribed optical path or through machining the region outside the prescribed optical path.

Abstract: The influence of dust is reduced to prevent degradation of the recording and reproduction performances of an optical head apparatus and an information processing apparatus which use a flying slider. The optical head apparatus includes a slider (28) for being flown by an air flow produced by rotation of a disk-type recording medium. Parallel rail elements (28A, 28B) are formed along the direction of the air flow on an opposing face of the slider to the disk-type recording medium. Another rail element (29) is formed in the middle between the two rail elements, and beam light condensed by an objective lens passes through the rail element (29) formed from a transparent material. Even if a foreign particle flows into a gap between the slider and the disk-type recording medium, the optical influence of the foreign particle is less likely to be exerted.

Abstract: A polarizing beam splitter (21) is secured in a state wherein a bottom plate (2102) thereof contacts closely with an upper face of a substrate (16) and a light receiving element (23) without a gap left therebetween. A quarter-wave plate (17) is attached to the polarizing beam splitter in a state wherein a lower face (1702) thereof contacts closely with an upper face (2104) without a gap left therebetween such that the lengthwise directions and the widthwise directions of them coincide with each other. An objective lens plate (18) is attached in a state wherein a lower face (1806) thereof contacts closely with an upper face (1704) of the quarter-wave plate without a gap left therebetween.

Abstract: An optical pickup device and optical disc apparatus of the present invention include an optical element that prevents the incidence of light on unnecessary portions of the optical element so that stray light and noise are eliminated. The optical element include at least one substrate having a plurality of lens substrates that have embedded lenses made of a material with a higher refractive index than the at least one substrate. A shielding means limits the optical path so that incident light propagates only within a prescribed optical path formed on a light incidence-side or emission-side surface of one of the lens substrates. In addition, the shielding means is formed from an absorptive or reflective film placed in a region outside the prescribed optical path or through machining the region outside the prescribed optical path.

Abstract: An optical element and manufacturing method of the present invention prevent the incidence of light on unnecessary portions of the optical element so that stray light and noise are eliminated. The optical element is configured from at least one substrate having a plurality of lens substrates that have embedded lenses made of a material with a higher refractive index than the at least one substrate. A shielding means limits the optical path so that incident light propagates only within a prescribed optical path formed on a light incidence-side or emission-side surface of one of the lens substrates. In addition, the shielding means is formed from an absorptive or reflective film placed in a region outside the prescribed optical path or through machining the region outside the prescribed optical path.

Abstract: An optical pickup apparatus is disclosed which can be formed in a minimized thickness while realizing improvement in focusing servo performance, improvement in heat radiation, reduction of the voltage, reduction in number of parts, and reduction of the cost. A swing arm having an optical pickup includes an optical pickup base plate formed from a thin plate member of an iron alloy or a copper alloy, and a hole perforated in the optical pickup base plate is closed up from the opposite sides with a silicon substrate and a glass cover to form an enclosed space. An integrated optical pickup unit including a semiconductor laser and an optical system integrated on the silicon substrate is disposed in the enclosed space.

Abstract: A compact and light flying head type magneto-optical head apparatus is provided. The magneto-optical head apparatus (1) of the present invention comprises a suspension (12) whose one end is fixed to a lower surface of an arm (11), a slider (13) fixed to a free end of the suspension (12), and a magnetic modulation coil (14) and an object lens (15) mounted on the slider (13). The slider (13) mounted with the magnetic modulation coil (14) and the object lens (15) floats due to a wind pressure caused by rotation of an MO disk (3). The magneto-optical head apparatus (1) is further provided with a collimeter lens (21) between a light source (71) and the object lens (15) in a hybrid optical apparatus (7) provided to the arm (11), and a position of the collimeter lens (21) can be adjusted vertically along an optical axis O-O by a collimeter actuator (23), so that optical conditions between the light source (71) and the object lens (15) are improved.

Abstract: In an optical disc apparatus 1, an optical pickup 10a for CD/DVD combo and an optical pickup 10b for BD are fixedly disposed across a spindle motor 12 so as to face each other, and the spindle motor 12 is shifted between the first and second optical pickups 10a and 10b by a feeding mechanism constituted by a ball screw 15, drive motor 16, guide shaft 17, and the like.

Abstract: An optical disk that is prevented from being warped when it is driven to rotate by a turntable includes a disk substrate formed as a metal substrate made of a magnetic substance. When the optical disk is mounted on a disk receiving face of the turntable, the metal substrate is attracted to the disk receiving face of the turntable by the magnetic force, thereby to correct any warping of the optical disk medium with a high degree of accuracy.

Abstract: An optical element and manufacturing method thereof are provided which, by preventing the incidence of light on unnecessary portions, can prevent the occurrence of stray light and noise. An optical element 21 is configured from one or more substrates comprising lens substrates 13, 14 in which are embedded lenses 11, 12 of material with higher refractive index than the substrates, and with shielding means 15 to limit the optical path such that incident light propagates only within a prescribed optical path formed on the light incidence-side or emission-side surface of one of the substrates 13, 14. Also, an optical element 21 is manufactured having shield means through the formation of an absorptive or reflective film 15 in the region outside the prescribed optical path or through machining of the region outside the prescribed optical path, performed on the light incidence-side or emission-side surface of a substrate 13, 14.

Abstract: A disc cassette comprises a case in which a recording disc is rotatably received. The case has an opening through which the disc is exposed. A bridge defined by the case extends across a mouth portion of the opening. A slide bar is arranged beside the bridge in a manner to move axially therealong. A shutter is connected to the slide bar to move therewith. The shutter selectively opens and closes the opening in accordance with axial movement of the slide bar. The slide bar has a base portion which comes beside the bridge when the shutter takes the open position, and the base portion is formed with a recess which faces in a direction away from the center of the disc recording medium.

Abstract: An optical pickup device capable of irradiating laser beams on a signal recording surface of magneto-optical disk is provided. The optical pickup device so provided includes a separate optical system whose moveable portion is reduced in weight in order to cope with high-speed access.

Abstract: A recording and reproducing apparatus having a holder for holding an inserted cartridge with a recording medium stored therein in which a recording medium is loaded or unloaded at the recording and reproducing position for recording and/or reproducing information as the holder is elevated or lowered, including a driver on which the recording medium rests at the recording and reproducing position and driving the recording medium for recording and/or reproduction and an elevator having an elevating and lowering operation cam formed on its side portion and elevating or lowering the holder when it is slid in parallel to the direction in which the cartridge is inserted.

Abstract: An optical pickup device capable of irradiating laser beams on a signal recording surface of a magneto-optical disk is provided. The optical pickup device so provided includes a separate optical system whose moveable portion is reduced in weight in order to cope with high-speed access.

Abstract: A recording and reproducing apparatus having a holder for holding an inserted cartridge with a recording medium stored therein in which a recording medium is loaded or unloaded at the recording and reproducing position for recording and/or reproducing information as the holder is elevated or lowered, including a drive portion on which the recording medium rests at the recording and reproducing position and driving the recording medium for recording and/or reproduction and an elevating portion having an elevating and lowering operation cam formed on its side portion and elevating or lowering the holder when it is slid in parallel to the direction in which the cartridge is inserted.

Abstract: A disk cartridge is provided for storing a recording disk in a space formed by fastening an upper half and a lower half. At least either the upper half or the lower half has a pair of groove portions defined on its right and left side surfaces from the front end to the central portion direction so as to oppose a mis-insertion preventing protrusion portion formed on a disk drive. Engagement concave portions which are engaged and held by the holding member disposed within the disk drive when the disk cartridge is loaded into the disk drive are provided on the inner surfaces of the groove portions.

Abstract: An optical pickup device capable of irradiating laser beams on a signal recording surface of a magneto-optical disk is provided. The optical pickup device so provided includes a separate optical system whose moveable portion is reduced in weight in order to cope with high-speed access.