A light source device according to the present disclosure includes a light source section, a first light separation element for transmitting a part of first light entering the first light separation element irrespective of a polarization component, and reflecting another part of the first light irrespective of a polarization component, a second light separation element for reflecting a part of the first light entering the second light separation element, a diffusion element for diffusing and emitting another part of the first light entering the diffusion element, and a wavelength conversion element for performing wavelength conversion on a part of the first light entering the wavelength conversion element to emit second light, wherein the second light separation element transmits a first polarization component with respect to the second light, and reflects a second polarization component.

A projection device, comprising a light source device and a control device. The light source device is configured to, according to instructions, emit laser light of first primary color, second primary color, third primary color, and a fourth mixed color fluorescence, respectively. The control device is configured to determine a color gamut range of pixels of an image to be modulated, and transmit the instructions according to the color gamut range to control the light source device to output light required for modulation of the image to be modulated from the laser light of first primary color laser, second primary color, third primary color, and fourth mixed color fluorescence, respectively. The device and method are capable of modulating an image with a wide color gamut, and also save light source energy.

A light source assembly includes a light source unit, a light collecting unit, a light separating unit and a light converting unit. The light source unit generates a first light beam having a first color and a first optical path. The light collecting unit has a light entering side and a light exiting side and is configured to collimate and condense the light beam incident on the light entering side. The light separating unit is disposed on an area between the light entering side and the light exiting side of the light collecting unit for reflecting the first light beam entering from the light entering side of the light collecting unit. The light converting unit absorbs the first light beam reflected from a light separating unit and generates a converted light beam having a second color.

A light source assembly includes a light source unit, a light collecting unit, a light separating unit and a light converting unit. The light source unit generates a first light beam having a first color and a first optical path. The light collecting unit has a light entering side and a light exiting side and is configured to collimate and condense the light beam incident on the light entering side. The light separating unit is disposed on an area between the light entering side and the light exiting side of the light collecting unit for reflecting the first light beam entering from the light entering side of the light collecting unit. The light converting unit absorbs the first light beam reflected from a light separating unit and generates a converted light beam having a second color.

A display apparatus is a display apparatus that projects an image onto a target projection surface having a first region in which a first wavelength light is reflected and a second region in which the first wavelength light is transmitted and in which visible light is emitted by receiving a second wavelength light that is different from the first wavelength light. The display apparatus includes: a wavelength selection unit that selects the first or the second wavelength light in accordance with a projection region based on region distribution information which is information about a distribution of the first and the second regions on the target projection surface; a light source unit that emits light selected from either the first or the second wavelength light; and a projection unit that projects the image formed by the emitted light onto the target projection surface.

Systems and methods for projecting a color onto a surface are provided. The method includes selecting, using an application on a mobile electronic device, a color from a list of one or more colors, identifying a color of a surface onto which the selected color is to be projected, and determining, using a processor, a color of light to be projected onto the surface such that the color of light, in conjunction with the color of the surface, produces the selected color. The method further includes projecting, using a projector, the color of light onto the surface.

Systems and methods for projecting a color onto a surface are provided. The method includes selecting, using an application on a mobile electronic device, a color from a list of one or more colors, identifying a color of a surface onto which the selected color is to be projected, and determining, using a processor, a color of light to be projected onto the surface such that the color of light, in conjunction with the color of the surface, produces the selected color. The method further includes projecting, using a projector, the color of light onto the surface.

Disclosed are a vehicle capable of projecting visual information used to guide driving or parking on a road and a control method therefor. The method of displaying information on a road for a vehicle includes recognizing a traveling state, determining at least one of a location or a curvature of a laser assistance line that is to be projected on a road from a front laser projector or a rear laser projector based on the recognized traveling state and a steering angle of the vehicle, and projecting the laser assistance line based on a result obtained from the determining.

An information acquisition method implemented by one or more processor, includes: acquiring, for each of frames, a brightness value corresponding to a position of a color filter from a light receiving device including light receiving elements whose light receiving surfaces are covered with color filters, the color filters including the color filter and the color filters comprising at least first color filters transmitting light of a wavelength band corresponding to a first color and second color filters transmitting light of a wavelength band corresponding to a second color; and acquiring information on a mobile device based on difference between brightness values of the position acquired from a plurality of frames and at least one of a threshold for the first color filters and a threshold for the second color filters.

A novel imaging system is provided for capturing imaging data. According to the disclosed embodiments, the imaging system comprises one or more cameras configured to capture the same scene within each camera's field of view. The imaging system also includes a plurality of bandpass filters that may be positioned in front of one or more cameras. Each bandpass filter may allow the transmission of incident electromagnetic signals between different pairs of first and second wavelengths. Accordingly, when the bandpass filters are positioned in front of the one or more cameras, each camera captures a different spectral image, i.e., containing only certain frequency components of the same scene being imaged in the cameras. The bandpass filters may be selectively aligned with one or more cameras by rotating and/or translating the filters relative to the cameras' positions in the imaging system.