A projection display system includes a light source assembly, a wavelength adjusting assembly, and a modulation assembly. The light source assembly is configured to emit projected light. The wavelength adjusting assembly is disposed on an optical path of the projected light for adjusting spectrum of the projected light, and a ratio of luminous efficacy of adjusted projected light to luminous efficacy of monochromatic light corresponding to a dominant wavelength of the projected light is greater than a preset ratio, and color gamut of the adjusted projected light satisfies a preset color gamut coverage. The modulation assembly is disposed on a light exiting path of the wavelength adjusting assembly and configured to modulate light emitted by the wavelength adjusting assembly and output corresponding image light to form projection image.

A projection device includes a drive housing that includes a protruding portion protruding from a central portion, a projection lens that includes a first rotation mechanism, and fans that draw in or discharge gas; the central portion includes a first A side surface that is provided in a first A direction X1 corresponding to one side in a first direction X and a second A side surface that is provided in a first B direction X2 corresponding to the other side in the first direction X; the protruding portion includes a first B side surface in the first A direction X1 and includes a second B side surface, which faces the projection lens, in the first B direction; and the fans face the second A side surface and the second B side surface.

A light source apparatus includes a light source, a light collection optical system configured to collect a pencil of light emitted from the light source using multiple lenses, a microlens array formed into a size corresponding to a collected light diameter of a pencil of light collected by the light collection optical system and caused to be incident thereon from the light collection optical system, and a display device on to which light transmitted through the microlens array to be superimposed together is incident.

A projector generates white light from a laser light source and uses the white light for image display. The white light generator has a rectangular light generating lens that generates excitation light of a rectangular shape from the blue light of a blue laser and a phosphor wheel, coated with a phosphor that is irradiated with the excitation light, to emit yellow light. In the phosphor wheel, a length in the vertical direction of a rectangular shape of an irradiation region is represented by v, and a length in the horizontal direction is represented by h, wherein h<v; and a center of the rectangular shape is within any one of a region having an angle of 45° or more and 135° or less and a region having an angle of 225° or more and 315° or less in the phosphor coat region of the phosphor wheel.

A projection system performs projection so that a projection range of a first projection portion and a projection range of a second projection portion are partially overlapped with each other, and includes a processor configured to: perform a control of shifting, from the first state as defined herein, to the second state as defined herein; and execute a control of adjusting a relative position between a first projection range of the first projection portion and a second projection range of the second projection portion in accordance with a received instruction.

A light source apparatus (1) according to the present disclosure includes a wavelength conversion device (10) that includes two or more wavelength conversion units (11-13) serially coupled in a first direction. The wavelength conversion device (10) has a configuration in which the two or more wavelength conversion units (11-13) generate respective converted lights having wavelengths different from each other to generate two or more converted lights. The two or more wavelength conversion units (11-13) each include a first end surface and a second end surface that are formed in a direction parallel to the first direction, and a light entering surface (43) that is formed in a second direction different from the first direction and which an excitation light for generating the converted light enters. The first end surface (41) of one wavelength conversion unit (13) positioned at one end of the wavelength conversion device (10) of the two or more wavelength conversion units (11-13) is configured to be a light extraction surface from which the two or more converted lights are extracted out of the excitation light and the two or more converted lights.

A light source device includes: a first light source configured to emit first light including a white wavelength band or one or more wavelength bands of at least red, green, and blue; a second light source configured to emit second light including a specific wavelength band included in the first light; a first detector configured to detect an amount of the light of the specific wavelength band in the first light; a first optical member configured to multiplex light of a wavelength band different from the specific wavelength band in the first light, and the second light; and a processor configured to control the first light source based on a detection result of the first detector.

The embodiments of the disclosure relates to the technical field of projection adjustment. Embodiments specifically disclose a self-adaptive adjustment method and adjustment system for brightness of a projection apparatus. In the disclosure, ambient illuminance and a projection distance of the projection apparatus are obtained by controlling an illuminance sensor and a distance sensor, and a functional relationship among the ambient illuminance, projection plane illuminance and the projection distance is found through analysis and modeling of a large amount of data.

The present disclosure relates to a light source apparatus including a laser light source that outputs a laser beam and a collimator system that parallelizes the laser beam. The collimator system includes three lens groups. A first group includes a first anamorphic lens having negative power in a first direction. A second group includes a second anamorphic lens having positive power in a second direction perpendicular to the first direction. A third group includes a third anamorphic lens having positive power in the first direction.

A display system includes a display screen, a light source to generate a light beam to be modulated in accordance with image data, and a beam scanning module to receive the light beams and to direct the light beam onto an associated display region of the display screen. The beam scanning module includes a resonant scanning mirror configured to scan the light beam along a first scanning direction across the associated display region, and a polygon scanning mirror to scan the light beam along a second scanning direction across the associated display region.