Abstract: Embodiments of the present disclosure, relating to the technical field of projection, provides a projection device. The projection device includes: an imaging module, configured to project images; a position adjustment module, connected to the projection module, and configured to adjust a position of the projection module; a controller, connected to the projection module and the position adjustment module, and configured to control the projection module to project images, and control the position adjustment module to adjust the position of the projection module.

Abstract: A projection lens includes a DMD chip, an equivalent prism, a vibrating mirror, a first refractive lens group, a diaphragm, and a second refractive lens group that are successively arranged. The first refractive lens group includes a first lens, a triple-cemented lens, and a fifth lens that are successively arranged. The triple-cemented lens includes a second lens, a third lens, and a fourth lens, and the fourth lens is an aspherical lens.

Abstract: The present disclosure relates to the technical field of digital projection display, and discloses a projection method and a projection apparatus. The method includes: acquiring a target object image; identifying attribute information of a target object based on the target object image; acquiring preset projection content based on the attribute information of the target object; acquiring a projection path; and projecting a projection screen based on the preset projection content and controlling the projection screen to move along the projection path. In this way, the projection is more flexible and more pertinent.

Abstract: The embodiments of the present disclosure, relating the technical field of projection display, provide a projection apparatus. A projection apparatus includes a projection unit, configured to project a projection image; a support frame, one end of the support frame being fixed to the projection unit; a regulation unit, suspended at the other end of the support frame; and a reflection unit, fixed to the regulation unit, and configured to reflect the projection image. A reflection direction of the reflection unit is regulated by regulating a rotation angle of the reflection unit, such that the reflection unit reflects the projection image to a target projection position.

Abstract: A projection lens includes a display chip, an equivalent flat lens, a first refractive lens group, a diaphragm, and a second refractive lens group that are successively arranged; wherein the first refractive lens group includes a first lens and a double-cemented lens that are successively arranged, wherein the double-cemented lens includes a second lens and a third lens. A total length of the projection lens is less than 32 mm, an angle of view of the projection lens is 65 degrees, and a depth of field of the projection lens at a projection distance of 400 mm reaches ±170 mm.

Abstract: Embodiments of the present disclosure relate to the technical field of projection, and provide a double telecentric projection lens and a projection system. The double telecentric projection lens includes a first lens group, an aperture stop, and a second lens group that are successively arranged from an object side to an image side, a center of the aperture stop being at a rear focus of the first lens group and a front focus of the second lens group; wherein a focal power of the double telecentric projection lens is greater than 0.03, an object-side numerical aperture of the double telecentric projection lens is 1.7, and an image-side numerical aperture of the double telecentric projection lens is 5.95.

Abstract: Embodiments of the present application relate to the technical field of projection, and in particular, relate to a projection method and a projection device. The projection method includes: acquiring a projection image and an environmental image when a screen picture is projected to a projection region, wherein the environmental image includes an image when a predetermined projection screen picture is projected to the projection region or an image when no screen picture is projected to the projection region; regulating an aperture based on the projection image and the environmental image, wherein the aperture is configured to control a light flux projected to the projection region. Therefore, by adjusting the light flux, impacts caused by the stray light may be mitigated, and a relationship between projection contrast and luminance may be better coordinated, such that the projection contrast and luminance are effectively balanced and hence projection quality is improved.

Abstract: The projection apparatus includes: a projection unit, a support frame, a mirror assembly, a mirror balance assembly, and an adjustment device. The projection unit is configured to emit a projection light beam. The mirror assembly is configured to reflect the projection light beam emitted by the projection unit. One end of the support frame is fixed to the projection unit, and the other end of the support frame is suspended. The mirror balance assembly is configured to suspend the mirror assembly to the other end of the support frame that is suspended. The mirror assembly is rotatable about at least one axis of rotation relative to the support frame. The adjustment device is configured to cause the mirror assembly to be inclined along the at least one axis of rotation relative to the mirror balance assembly. In this way, the mirror assembly is flexibly adjusted at a plurality of angles.

Abstract: The present disclosure relates to a vibrating mirror adjustment apparatus, system and method, and a projector. The vibrating mirror adjustment apparatus includes: an image feature acquiring module, an image identifying module, a resolution extracting module, and a vibrating mirror control module. The vibrating mirror adjustment apparatus identifies the category of the projected image and the resolution information corresponding to the projected image based on the acquired information feature of the projected image, then identifies whether vibration of the vibrating mirror is used to improve a resolution of an image, and further automatically controls the on or off state of the vibrating mirror, such that an optimal projection display effect is achieved, and visual enjoyment of a user is greatly improved.

Abstract: Embodiments of the disclosure provide a method for wall surface calibration, a method for edge calibration, a calibration apparatus, and a computer program product. The method for wall surface calibration comprises: acquiring a first rotation parameter and a second rotation parameter when a center of a projection picture of the calibration apparatus directly faces two boundary points on a top edge of the wall surface respectively; acquiring a third rotation parameter and a fourth rotation parameter when the center of the projection picture of the calibration apparatus directly faces two boundary points on a bottom edge of the wall surface respectively; and determining a surface calibration parameter of the wall surface relative to the calibration apparatus according to the first edge calibration parameter, the second edge calibration parameter, the first rotation parameter, the second rotation parameter, the third rotation parameter and the fourth rotation parameter.

Abstract: Embodiments of the present disclosure propose a method for controlling projection of a projection module, a projection system and a storage medium. The method for controlling projection of the projection module includes: obtaining a projection environment where the projection module is located, and determining a position of a target person according to the projection environment; and planning the best projection position in the projection environment according to the projection environment and the position of the target person. The best projection position in the projection environment is planned according to the position of the target person, so that the projection picture projected by the projection module can be adaptively changed along the position of the target person to fit with the current status of the target person to improve the perception experience of the user.

Abstract: Embodiments of the present disclosure relate to the technical field of digital projection display, and disclose a dynamic projection device, a dynamic projection method, and a projector. The device includes: a projection unit configured to output a projection picture according to a projection image; a reflection unit configured to reflect the projection picture to a target projection position; an angle calculation unit connected with the reflection unit and configured to calculate a rotation angle of the reflection unit; and an image correction unit connected with the angle calculation unit and the projection unit, respectively, and configured to correct the projection image according to the rotation angle. The present disclosure adjusts the projection direction by controlling the reflection unit with simple structure and light weight, realizing convenient direction control and high-quality projection display, and covering a wide area of the projection environment.

Abstract: A mobile device and method for advertisement projecting. The mobile device includes: a main unit with a control circuit board; a projection module for projecting advertisement contents; a projection display window for completely displaying projection contents from the projection module, a camera module group for acquiring projection environment information in front of and behind the projection display window, and a main unit fixing device for fixing the mobile device for advertisement projecting on a mobile body. The main unit is configured to push corresponding advertisement contents which is projected by the projection module according to the projection environment information.

Abstract: A bi-directional excitation color wheel includes a first working surface and a second working surface which are of the same size, wherein the first working surface includes a first working ring and a second working ring which are concentric rings; the second working surface includes a third working ring and a fourth working ring which are concentric rings; the first working ring includes a first translucent region and a green fluorescent region, the second working ring includes a second translucent region, the third working ring includes a third translucent region, and the fourth working ring includes a fourth translucent region and a first fluorescent region; the first translucent region and the third translucent region are the same translucent region, and the second translucent region and the fourth translucent region are the same translucent region.

Abstract: A curved-surface apparatus for wavelength converting. The apparatus includes: a light source excitation unit comprising a plurality of light source exciters for emitting identical or different excited light, respectively; a wavelength conversion unit provided with annular structure; a plurality of component sets circularly disposed on a curved surface of the annular structure and divided into a plurality of component regions provided with predetermined color wavelength conversion substances; a beam splitter set configured to reflect the excited light emitted by the light source excitation unit and transmit predetermined light; a condenser lens set disposed near the wavelength conversion unit.

Abstract: A color wheel includes an inner ring, including translucent regions which are diagonally distributed; and an outer ring, including fluorescent regions and a translucent region, the fluorescent regions including green fluorescent regions and yellow fluorescent regions, the green fluorescent regions being diagonally distributed; wherein, the angles of the translucent regions of the inner ring are greater than or equal to the angles of the green fluorescent regions of the outer ring, the angle extension lines of the ring-shaped green fluorescent regions passing through the center of a circle fall within the ring-shaped translucent regions of the inner ring, such that the green light generated in the green fluorescent regions passes through the translucent regions after being reflected, and the yellow light generated in the yellow fluorescent regions is projected to a red light filter after being reflected.

Abstract: A bi-directional excitation color wheel includes a first working surface and a second working surface which are of the same size, wherein the first working surface includes a first working ring and a second working ring which are concentric rings; the second working surface includes a third working ring and a fourth working ring which are concentric rings; the first working ring includes a first translucent region and a green fluorescent region, the second working ring includes a second translucent region, the third working ring includes a third translucent region, and the fourth working ring includes a fourth translucent region and a first fluorescent region; the first translucent region and the third translucent region are the same translucent region, and the second translucent region and the fourth translucent region are the same translucent region.

Abstract: A color wheel includes an inner ring, including translucent regions which are diagonally distributed; and an outer ring, including fluorescent regions and a translucent region, the fluorescent regions including green fluorescent regions and yellow fluorescent regions, the green fluorescent regions being diagonally distributed; wherein, the angles of the translucent regions of the inner ring are greater than or equal to the angles of the green fluorescent regions of the outer ring, the angle extension lines of the ring-shaped green fluorescent regions passing through the center of a circle fall within the ring-shaped translucent regions of the inner ring, such that the green light generated in the green fluorescent regions passes through the translucent regions after being reflected, and the yellow light generated in the yellow fluorescent regions is projected to a red light filter after being reflected.

Abstract: A mobile device and method for advertisement projecting. The mobile device includes: a main unit with a control circuit board; a projection module for projecting advertisement contents; a projection display window for completely displaying projection contents from the projection module, a camera module group for acquiring projection environment information in front of and behind the projection display window, and a main unit fixing device for fixing the mobile device for advertisement projecting on a mobile body. The main unit is configured to push corresponding advertisement contents which is projected by the projection module according to the projection environment information.

Abstract: A curved-surface apparatus for wavelength conversing. The apparatus includes: a light source excitation unit comprising a plurality of light source exciters for emitting identical or different exciting light, respectively; a wavelength conversion unit provided with annular structure; a plurality of component sets circularly disposed on a curved surface of the annular structure and divided into a plurality of component regions provided with predetermined color wavelength conversion substances; a beam splitter set configured to reflect the exciting light emitted by the light source excitation unit and transmit predetermined light; a condenser lens set disposed near the wavelength conversion unit.