Abstract: A light source device according to the present disclosure includes a first light source section for emitting a first light flux, a second light source section for emitting a second light flux, a third light source section for emitting a third light flux, a first reflecting member, a second reflecting member for reflecting the second light flux, and a polarization combining element. With respect to the polarization combining element, the first light flux and the second light flux are light polarized in a first polarization direction, and the third light flux is light polarized in a second polarization direction, and the first and second reflecting members are disposed so that a distance between the first light flux and second light flux becomes smaller after incidence than before the incidence. The polarization combining element combines the first light flux, the second light flux, and the third light flux with each other.

Abstract: A light source device includes a light emitting element, and a microlens array having a first multi-lens surface and a second multi-lens surface. The light which enters the first multi-lens surface has an angular distribution. The first multi-lens surface has a plurality of first cells arranged in an array, and the second multi-lens surface has a plurality of second cells arranged in an array. Light proceeding from one of the first cells toward the second multi-lens surface has a first light beam which enters one second cell, and a second light beam which enters another second cell different from the one second cell. A first area of an illumination target is irradiated with the first light beam, and a second area of the illumination target different from the first area is irradiated with the second light beam.

Abstract: An illuminator includes a light source that outputs first light having a first wavelength band, a wavelength converter that converts the first light into second light having a second wavelength band different from the first, a first optical element that reflects part of the first light to cause the reflected first light to be incident on the wavelength converter and transmits the other part of the first light and the second light, and a second optical element that reflects the other part of the first light having the first wavelength band and passing through the first optical element, the direction of the reflected light being the traveling direction of the second light having the second wavelength band and passing through the first optical element, and transmits the second light having the second wavelength band and emitted from the wavelength converter.

Abstract: A light source device according to the present disclosure includes a first light source section for emitting a first light flux, a second light source section for emitting a second light flux, a third light source section for emitting a third light flux, a first reflecting member, a second reflecting member for reflecting the second light flux, and a polarization combining element. With respect to the polarization combining element, the first light flux and the second light flux are light polarized in a first polarization direction, and the third light flux is light polarized in a second polarization direction, and the first and second reflecting members are disposed so that a distance between the first light flux and second light flux becomes smaller after incidence than before the incidence. The polarization combining element combines the first light flux, the second light flux, and the third light flux with each other.

Abstract: An optical element includes a first multi-lens surface and a second multi-lens surface. The first multi-lens surface has m areas arranged in an array, the m areas including a plurality of first cells. The second multi-lens surface has m second cells arranged in an array, the m second cells corresponding to the m areas. Light enters the first multi-lens surface. The light is emitted from the second multi-lens surface. The m areas of the first multi-lens surface each have n first cells. A focal plane of the m second cells is located at an emission side of the n first cells. The number m is a natural number no smaller than 2, and the number n is a natural number no smaller than 2.

Abstract: A light source device according to the present disclosure includes a first light source section for emitting a first light flux, a second light source section for emitting a second light flux, a third light source section for emitting a third light flux, a first reflecting member, a second reflecting member for reflecting the second light flux, and a polarization combining element. With respect to the polarization combining element, the first light flux and the second light flux are light polarized in a first polarization direction, and the third light flux is light polarized in a second polarization direction, and the first and second reflecting members are disposed so that a distance between the first light flux and second light flux becomes smaller after incidence than before the incidence. The polarization combining element combines the first light flux, the second light flux, and the third light flux with each other.

Abstract: A light source device includes a light emitting element, and a microlens array having a first multi-lens surface and a second multi-lens surface. The light which enters the first multi-lens surface has an angular distribution. The first multi-lens surface has a plurality of first cells arranged in an array, and the second multi-lens surface has a plurality of second cells arranged in an array. Light proceeding from one of the first cells toward the second multi-lens surface has a first light beam which enters one second cell, and a second light beam which enters another second cell different from the one second cell. A first area of an illumination target is irradiated with the first light beam, and a second area of the illumination target different from the first area is irradiated with the second light beam.

Abstract: An illuminator includes a light source that outputs first light having a first wavelength band, a wavelength converter that converts the first light into second light having a second wavelength band different from the first, a first optical element that reflects part of the first light to cause the reflected first light to be incident on the wavelength converter and transmits the other part of the first light and the second light, and a second optical element that reflects the other part of the first light having the first wavelength band and passing through the first optical element, the direction of the reflected light being the traveling direction of the second light having the second wavelength band and passing through the first optical element, and transmits the second light having the second wavelength band and emitted from the wavelength converter.

Abstract: An optical element includes a first multi-lens surface and a second multi-lens surface. The first multi-lens surface has m areas arranged in an array, the m areas including a plurality of first cells. The second multi-lens surface has m second cells arranged in an array, the m second cells corresponding to the m areas. Light enters the first multi-lens surface. The light is emitted from the second multi-lens surface. The m areas of the first multi-lens surface each have n first cells. A focal plane of the m second cells is located at an emission side of the n first cells. The number m is a natural number no smaller than 2, and the number n is a natural number no smaller than 2.

Abstract: A light source device according to the present disclosure includes a first light source section for emitting a first light flux, a second light source section for emitting a second light flux, a third light source section for emitting a third light flux, a first reflecting member, a second reflecting member for reflecting the second light flux, and a polarization combining element. With respect to the polarization combining element, the first light flux and the second light flux are light polarized in a first polarization direction, and the third light flux is light polarized in a second polarization direction, and the first and second reflecting members are disposed so that a distance between the first light flux and second light flux becomes smaller after incidence than before the incidence. The polarization combining element combines the first light flux, the second light flux, and the third light flux with each other.

Abstract: A projector includes a first light modulation device, a second light modulation device, a third light modulation device, a first light source configured to emit excitation light, a fluorescence emitting element which is excited by the excitation light to emit fluorescence toward an incidence side of the excitation light, a first dichroic mirror configured to guide the excitation light to the fluorescence emitting element, and separate the fluorescence emitted from the fluorescence emitting element into first colored light and second colored light, and a second dichroic mirror configured to guide the excitation light to the first dichroic mirror, and reflect the second colored light separated by the first dichroic mirror, wherein the first colored light separated by the first dichroic mirror enters the first light modulation device, and the second colored light reflected by the second dichroic mirror enters the second light modulation device.

Abstract: A projector includes a first light modulation device, a second light modulation device, a third light modulation device, a first light source configured to emit excitation light, a fluorescence emitting element which is excited by the excitation light to emit fluorescence toward an incidence side of the excitation light, a first dichroic mirror configured to guide the excitation light to the fluorescence emitting element, and separate the fluorescence emitted from the fluorescence emitting element into first colored light and second colored light, and a second dichroic mirror configured to guide the excitation light to the first dichroic mirror, and reflect the second colored light separated by the first dichroic mirror, wherein the first colored light separated by the first dichroic mirror enters the first light modulation device, and the second colored light reflected by the second dichroic mirror enters the second light modulation device.

Abstract: An illumination device is provided with a light source device including a first light-emitting element that emits a first pencil of rays, and a light shaping optical system including a first lens surface on which the first pencil of rays is incident. The first lens surface has a first free-form surface represented by Expression (1) in which x and y are used as variables. In Expression (1), in a case where h is set to a positive integer, the coefficient Cj of the x2h term is different from the coefficient Cj of the y2h term.

Abstract: An illumination device is provided with a light source device including a first light-emitting element that emits a first pencil of rays, and a light shaping optical system including a first lens surface on which the first pencil of rays is incident. The first lens surface has a first free-form surface represented by Expression (1) in which x and y are used as variables. In Expression (1), in a case where h is set to a positive integer, the coefficient Cj of the x2h term is different from the coefficient Cj of the y2h term.

Abstract: A projector includes a light source device, a light modulation device, and an exterior casing. The projector is arranged so as to be installed in a desktop mount position and a ceiling suspension position. The light source device includes an elliptic reflector having a nearly ellipsoidal reflection surface and converging and outputting a luminous flux radiated from a light source lamp in a certain direction, and a parallelizing lens that parallelizes the converged light of the elliptic reflector, and a lens supporting part that supports the parallelizing lens and makes a position of the parallelizing lens relative to the light source device main body changeable according to the position of the projector is provided.

Abstract: A projector includes a light source, an illumination optical system, and a color separating optical system. The color separating optical includes a dichroic mirror which reflects a first color light component of an illumination light through a first optical path by a reflection angle and transmits a second light component through a second optical path; a first mirror which bends the first optical path by a first bent angle; and a second mirror which bends the second optical path by a second bent angle. The reflection angle, the first bent angle, and the second bent angle are arranged to provide a predetermined difference between the length of the first optical path and the length of the second optical path, and the predetermined difference corresponding to a difference between focal distances of a superimposing optical element corresponding to the first and second light components.

Abstract: A projector includes: a light source that emit light; an illumination optical system that includes a superimposing optical element capable of performing superimposition illumination and uniformizes the light emitted from the light source to form illumination light; a color separating optical system that includes a dichroic mirror which reflects a predetermined color light component of the illumination light and transmits other light components, thereby separating the light components into a first optical path and a second optical path, a first mirror which bends the first optical path, and a second mirror which bends the second optical path, and adjusts the reflection angle of the predetermined color light component by the dichroic mirror and the bent angles of the optical paths by the first and second mirrors to provide a predetermined difference between the length of the first optical path and the length of the second optical path, the predetermined difference corresponding to a difference between the focal

Abstract: A projector according to an aspect of the invention includes: a light source device, the light source device including a light source lamp and a reflector, the light source lamp having a pair of electrodes and a light-emitting tube in which the pair of electrodes are arranged, the reflector fixed to the exterior casing and irradiating the light beam radiated from the light source lamp in a certain direction; an optical modulator that modulates a light beam irradiated from the light source device; a projection optical device that projects the light beam modulated by the optical modulator in an enlarged manner; an exterior casing that houses the light source device, the optical modulator, and the projection optical device to be arranged therein; and a light source lamp support portion that supports the light source lamp, the light source lamp support portion being adapted to change a position of the light source lamp with respect to the reflector in accordance with a posture of the projector, the posture includ

Abstract: A projector includes: a light source device; a light modulation device that modulates a luminous flux output from the light source device; a projection optical device that magnifies and projects the luminous flux modulated in the light modulation device; and an exterior casing that accommodates the light source device, the light modulation device, and the projection optical device arranged within, the projector is arranged so as to be installed in a desktop mount position in which the projector is mounted on a predetermined location and a ceiling suspension position in which the projector is provided opposite in the vertical direction relative to the desktop mount position, the light source device includes a light source device main body having a light source lamp in which discharge emission is performed between a pair of electrodes and an elliptic reflector having a nearly ellipsoidal reflection surface and converging and outputting a luminous flux radiated from the light source lamp in a certain direction,

Abstract: Aspects of the invention can provide a projector capable of forming a projected image with an apparently seamless and smooth image quality in the stable state. As for the image light passed through a first unit, the polarization direction thereof can be appropriately rotated by a ?/2 phase plate, and a part of the image light can be split in the Y direction by a birefringent plate. When this is projected as it is, an image composed of a plurality of two dimensionally arranged pixels, pixels corresponding to the split image, and a black matrix area can be formed on a screen. As for the image light passed through a second unit, the polarization direction thereof can be appropriately rotated by a ?/2 phase plate, and a part of the image light can be split in the Y direction by a birefringent plate. Then, an image composed of the pixels in the previous stages, the pixels corresponding to the split images, and the black matrix area can be formed on the screen.