Abstract:
A light source unit of the present invention includes a light emitting device emitting light having a characteristic in which emitted light travels in a predetermined direction in which a uniformity in intensity distribution relative to an axis of the emitted light is high and an unstable direction in which a uniformity in intensity distribution relative to the axis of the emitted light is lower than that in the predetermined direction, the unstable direction being at right angles to the predetermined direction, an intensity transforming lens formed to control the intensity distribution in the predetermined direction and on which the light emitted from the light emitting device is incident, and a superposition transforming optical device formed to control the intensity distribution in the unstable direction by dividing the intensity distribution into a plurality of directions and superposing divided intensity distributions one on the other.
Abstract:
A light source unit and a projector including the light source unit are provided. The light source unit includes a luminous wheel having a segment area on which a luminescent material layer is formed which emits light of a predetermined wavelength band by receiving light, and a segment area which is made into a transmission portion which transmits light, a primary light source which shines light of a visible wavelength band onto the luminous wheel, a secondary light source which emits light of a wavelength band which is different from light from the luminescent material layer and light from the primary light source, a collective optical system which collects light from the luminous wheel and the secondary light source to cause them to converge to a same optical path, and a light source control device which controls the emission of light from the light sources.
Abstract:
There is provided an optical wheel device including a motor, a wheel holding member which is fixed to a motor shaft of the motor and which has a recess portion on a surface which is normal to the motor shaft, an optical wheel which is fixed to a surface of the wheel holding member which is opposite to a surface facing the motor, and a collective lens which is disposed in the proximity to the optical wheel on a side of the optical wheel which is opposite to a side facing the motor, wherein a distal end face of a projecting portion on the wheel holding member which projects towards a side of the collective lens is positioned closer to a side of the motor than a plane of a surface of the collective lens which faces the motor.
Abstract:
A light source device includes a first light source configured to emit light within a first wavelength band, a second light source configured to emit light within a second wavelength band, and a light source control section configured to control drive timing of the first light source with a first drive pattern, and to control drive timing of the second light source with a second drive pattern which is an inverted pattern of the first drive pattern of the first light source, such that a light emission period for light-source light using light emitted by the second light source is positioned between light emission periods for the light-source light emitted by the first light source, and such that a frequency of the light-source light using light emitted by the second light source is higher than a frequency of light emitted by the first light source.
Abstract:
A light source device includes a first light source configured to emit light within a first wavelength band, a second light source configured to emit light within a second wavelength band, and a light source control section configured to control drive timing of the first light source with a first drive pattern, and to control drive timing of the second light source with a second drive pattern which is an inverted pattern of the first drive pattern of the first light source, such that a light emission period for light-source light using light emitted by the second light source is positioned between light emission periods for the light-source light emitted by the first light source, and such that a frequency of the light-source light using light emitted by the second light source is higher than a frequency of light emitted by the first light source.
Abstract:
A light source device includes a first light source, a second light source and a composite dichroic mirror. The first light source is configured to emit light of a first wavelength band. The second light source is configured to emit light of a second wavelength band which is different from the first wavelength band. The composite dichroic mirror has a first area and a second area which characteristics is different from characteristics of the first area. The composite dichroic mirror reflects the light of the first wavelength band while transmitting the light of the second wavelength band. The light of the first wavelength band is radiated corresponding to the first area and the second area of the composite dichroic mirror, and the light of the second wavelength band is radiated corresponding to the first area of the composite dichroic mirror.
Abstract:
There is provided a light source unit comprising a first and second light sources, a luminescent light emitting device having a light emitting plate, a light source control device controlling the illumination of the light sources and driving of the light emitting plate, and a light guiding optical system guiding light from the light sources and luminescent light from the light emitting plate so that optical axes coincide to be directed in the same direction, wherein the light emitting plate includes a first area with a luminescent material layer on a reflection layer, a second area transmitting light from the light sources while diffusing it and a third area with a luminescent material layer on a dichroic layer, and wherein the light emitting plate includes a drive motor positioning repeatedly sequentially the first, second and third areas in an optical axis position of light from the light sources.
Abstract:
A light source unit and a projector including the light source unit are provided. The light source unit includes a luminous wheel having a segment area on which a luminescent material layer is formed which emits light of a predetermined wavelength band by receiving light, and a segment area which is made into a transmission portion which transmits light, a primary light source which shines light of a visible wavelength band onto the luminous wheel, a secondary light source which emits light of a wavelength band which is different from light from the luminescent material layer and light from the primary light source, a collective optical system which collects light from the luminous wheel and the secondary light source to cause them to converge to a same optical path, and a light source control device which controls the emission of light from the light sources.
Abstract:
A light source unit includes a red light source, a first blue-light source, a fluorescent material, a second blue light source and an optical system. The red light source emits light in red wavelength range. The first blue-light source emits light in a first blue-wavelength range. The fluorescent material receives the light in the first blue-wavelength range and emits light in a green wavelength range. The second blue-light source emits light in a second blue-wavelength range whose wavelengths are longer than those in the first blue-wavelength range. An optical system guides the light emitted from the red light source, the light emitted from the second blue-light source, and the light emitted from the fluorescent material, along a unique optical path.
Abstract:
A light source according to the present invention includes an excitation light source configured to emit excitation light, and a luminescent wheel including a base material, a fluorescent light emitting zone formed on one surface of the base material and configured to emit fluorescent light having a wavelength in a wavelength range which differs from that of the excitation light and a reflection zone disposed so as to be aligned with the fluorescent light emitting zone on the one side surface of the base material and configured to reflect the excitation light, and a shining position of the excitation light on the fluorescent light emitting zone and a shining position of the excitation light on the reflection zone differ from each other in relation to a radial direction of the luminescent wheel.