A projection apparatus and a projection method are provided. The projection apparatus includes a projection device, a capturing image device, and a processing device. The capturing image device is configured to obtain an environmental image. The processing device is coupled to the projection device and the capturing image device. The processing device is configured to analyze the environmental image to provide at least one effective projection region. The processing device selects one of the at least one effective projection regions as a target projection region. The projection device is configured to project a projection image to the target projection region.

A projection device includes a projection unit including a display element in which pixel lines each formed by pixels arranged in a first direction are arranged in a second direction and an optical system that projects light emitted from the display element and projecting an image based on input image data, a first correction unit for correcting a scale of each line data of the image data that corresponds to each of the pixel lines, a second correction unit for correcting a second-direction scale of each pixel data of the image data after the correction performed by the first correction unit, and an image cutting-out unit for cutting out image data of an area, which is projected from the projection unit, of the image data after the correction performed by the second correction unit and input the image data of the area to the projection unit.

A projection-type display device includes: an operation signal detector, configured to receive an operation signal that indicates adjustment content of a projected image that was instructed by way of an operation unit; an installation state detector, configured to detect, as an installation state of the projection-type display device, a first state and a second state that is rotated 90 degrees from the first state around an axis that is parallel to an optical axis of a projection lens; and a controller that, upon detecting a signal that corresponds to a first direction by way of the operation signal detector in the first state and the second state, adjusts the projected image by causing the projected image to shift in the first direction, or adjusts the projected image by causing a correction-object site in the projected image to move in the first direction.

A system includes a calibration plate with fiducial markers, a device under test interface, an alignment stage with a rotary sub-stage and a linear sub-stage, and a camera on the alignment stage.

A projector includes a lens, an image capturing device, and a processor connected to the projector and the image capturing device. The processor includes instructions for illuminating a work space using the lens, defocusing the lens, and after defocusing the lens, capturing an image of the work space.

The invention discloses a projector, including a light source, a light engine module and a lens module. The lens module includes a plate, a lens, at least two sliding components and a first position adjustment device. The sliding components are disposed between the plate and a light engine housing and located respectively at a first position and a second position of the light engine housing. Each of the sliding components has a sliding member and a distance adjustment member. The plate is movably disposed on the light engine housing via the sliding member. The distance adjustment members are in contact with the sliding members respectively. The first position adjustment device is movably disposed between the plate and the light engine housing. The invention further discloses a lens module. The invention can improve movement accuracy and imaging stability of a projector and a lens module.

A projection device is adapted to be placed on a surface and includes a projection lens and a projection device housing. The projection lens is connected to the projection device housing, and the projection device housing includes a main casing and a supporting assembly disposed on the main casing in a flipping manner. When the projection device housing is located in a folded position, the supporting assembly leans against the main casing and the projection lens faces a first direction. When the projection device housing is located in an unfolded position, the supporting assembly is flipped with respect to the main casing and is adapted to stand on the surface, and the projection lens faces a second direction and is adapted to project onto the surface. The projection device may project onto the standing surface without a tall casing or a bracket to be included or additionally assembled.

A projection zoom lens includes, sequentially from an enlargement conjugate side: a first lens group having negative refractive power; a second lens group having positive or negative refractive power; a third lens group having positive refractive power; a fourth lens group having negative refractive power; a fifth lens group having positive refractive power; and a sixth lens group having positive refractive power, and configured to perform a magnification variation by changing the interval between the respective lens groups, wherein the fourth lens group includes at least one positive lens and at least one negative lens, at least one of the positive lenses included in the fourth lens group satisfies the following Conditional Expressions: 0.71≦θg_Fp+0.004×νdp≦0.73 and 15≦νdp≦25, and the back focus of the entire projection zoom lenses satisfies the following Conditional Expression 1.0≦BF/Fw≦2.7.

A projector can prevent a flicker from being caused by rotation of a rotating phosphor plate. The projector includes a solid-state light source that emits excitation light, a rotating phosphor plate that converts the excitation light into phosphor light, a liquid-crystal light modulating device that modulates the light from the rotating phosphor plate, a projection optical system that projects the modulated light onto a screen, and a control device that controls the solid-state light source and the rotating phosphor plate so as to satisfy any one of a conditional expression A=B, a conditional expression A=2B, and a conditional expression |A−B| is greater than or equal to 20 and |A−2B| is greater than or equal to 20, where A represents a pulse width modulation control frequency in hertz of the solid-state light source and B represents a rotation frequency in hertz of the rotating phosphor plate.

A light control unit includes: a first light-shielding fin and a second light-shielding fin arranged to have a center axis of light passing therethrough interposed therebetween, and a moving device configured to move the first light-shielding fin and the second light-shielding fin so that respective end portions of the first light-shielding fin and the second light-shielding fin move in directions toward and away from each other, and the first light-shielding fin and the second light-shielding fin include: an arm moved by the moving device, and a light-shielding portion provided on the arm and configured to move with the arm to be arranged in a passage area of the light, and at least one of the first light-shielding fin and the second light-shielding fin includes an adjusting portion configured to adjust a mounting position between the arm and the light-shielding portion, the arm and the light-shielding portion being separate members.