Abstract: A housing 10 is provided with a groove V1a into which an electrode 3b of a laser oscillation element 30a and an electrode 3a of a laser oscillation element 30b are inserted. Inside the groove V1a, there exists a conductive layer 12 configured to electrically connect the electrode 3b of the laser oscillation element 30a and the electrode 3a of the laser oscillation element 30b.

Abstract: A technology disclosed in the specification of the subject application relates to a laser light source device capable of suppressing loss of optical output power from a semiconductor laser device, and to a method of manufacturing of a laser light source device while the degree of freedom in arrangement of the semiconductor laser device is secured. A laser light source device according to the subject technology includes a semiconductor laser device, and an optical element provided on an optical axis of an emission light emitted from the semiconductor laser device. The optical element separates a portion of a luminous flux of an emission light that is emitted from the semiconductor laser device and that is not separated in a fast axis direction from another portion so as to be separated in the fast axis direction.

Abstract: A housing 10 is provided with a groove V1a into which an electrode 3b of a laser oscillation element 30a and an electrode 3a of a laser oscillation element 30b are inserted. Inside the groove V1a, there exists a conductive layer 12 configured to electrically connect the electrode 3b of the laser oscillation element 30a and the electrode 3a of the laser oscillation element 30b.

Abstract: A technology disclosed in the specification of the subject application relates to a laser light source device capable of suppressing loss of optical output power from a semiconductor laser device, and to a method of manufacturing of a laser light source device while the degree of freedom in arrangement of the semiconductor laser device is secured. A laser light source device according to the subject technology includes a semiconductor laser device, and an optical element provided on an optical axis of an emission light emitted from the semiconductor laser device. The optical element separates a portion of a luminous flux of an emission light that is emitted from the semiconductor laser device and that is not separated in a fast axis direction from another portion so as to be separated in the fast axis direction.

Abstract: A laser beam-combining optical device according to the present invention includes a plurality of semiconductor laser arrays, and a reflective element that reflects a laser light beam emitted from at least one semiconductor laser array of the plurality of semiconductor laser arrays. When laser light beams emitted from respective ones of the plurality of semiconductor laser arrays are focused on a single focus point, the laser light beam emitted from the at least one semiconductor laser array is reflected by the reflective element, and is then focused on the focus point.

Abstract: A laser beam-combining optical device according to the present invention includes a plurality of semiconductor laser arrays, and a reflective element that reflects a laser light beam emitted from at least one semiconductor laser array of the plurality of semiconductor laser arrays. When laser light beams emitted from respective ones of the plurality of semiconductor laser arrays are focused on a single focus point, the laser light beam emitted from the at least one semiconductor laser array is reflected by the reflective element, and is then focused on the focus point.

Abstract: A rear-projection-type display apparatus projects an image formed by a display element with a light beam emitted from a light source on a screen that is larger than the display element through a projection lens. The rear-projection-type display apparatus includes a reflective optical-element group having at least two reflecting mirrors provided between the projection lens and the screen to deflect a light from the projection lens.

Abstract: A rear-projection-type display apparatus projects an image formed by a display element with a light beam emitted from a light source on a screen that is larger than the display element through a projection lens. The rear-projection-type display apparatus includes a reflective optical-element group having at least two reflecting mirrors provided between the projection lens and the screen to deflect a light from the projection lens.

Abstract: A projection-type display apparatus including a light source, an integrator whose input plane receives a light emitted from the light source and whose output plane serves as a surface illuminant, an image forming device modulating an incident linearly-polarized light beam to form an image in accordance with a video signal, a polarization-conversion device converting a uniform light beam exiting from the integrator into a linearly-polarized light beam to be applied to the image forming device, and a projection device projecting the image formed by the image forming device. The light source is constituted by a light emitting diode.

Abstract: A projection-type display apparatus including a light source, an integrator whose input plane receives a light emitted from the light source and whose output plane serves as a surface illuminant, an image forming device modulating an incident linearly-polarized light beam to form an image in accordance with a video signal, a polarization-conversion device converting a uniform light beam exiting from the integrator into a linearly-polarized light beam to be applied to the image forming device, and a projection device projecting the image formed by the image forming device. The light source is constituted by a light emitting diode.

Abstract: A projection display unit which has a light source, a reflecting mirror for reflecting a light pencil from the light source, a first multilens array for dividing a light pencil gathered by the reflecting mirror into a plurality of light pencils, a second multilens array for forming an image of the first multilens array, a polarization conversion element for converting light pencils in an irregular polarization state into linearly polarized light, a condenser having positive power for superposing the light pencils provided through the multilens array, a collimator lens having positive power for correcting the angle of a light beam, a display element for forming an image by electric modulation, a projection lens for enlarging and projecting the image formed on the display element, and a correction lens being disposed between the condenser and the collimator lens for correcting the light pencil.