Abstract: The present disclosure provide a movable projection system and a projection device. The movable projection system includes a cabinet, a projection unit, a moving unit, an image acquisition unit, an interaction unit, a communication unit, and a control unit. The control unit is connected to the projection unit, the moving unit, the image acquiring unit, the interaction unit, and the communication unit, and configured to control, based on the interaction information of the communication unit, the input information of the interaction unit and the image information of the image acquisition unit, the projection unit to project the content and the moving unit to move.

Abstract: A projection optical system applicable to a head-up display device mounted on an automobile includes an image generation unit, a first reflection unit, a double-telecentric lens, a light splitting device, a second reflection unit, a first lens, a third reflection unit, and a second lens that are successively arranged in a light exit direction. The light splitting device is arranged on an image side of the telecentric lens. The image generation unit is capable of simultaneously emitting light beams including image information of a first image and a second image in different contents. In response passing through the first reflection unit, the double-telecentric lens, and the light splitting device, the light beam of the first image exiting from the second reflection unit is projected and imaged, and the light beam of the second image exiting from the third reflection unit is projected and imaged.

Abstract: Embodiments of the present disclosure relate to the technical field of digital projection and display, and in particular, relate to an automatic focusing projection method and system. The embodiments provide an automatic focusing projection method, which is applicable to an automatic focusing projection system. The automatic focusing projection system includes a ranging unit, a projection unit, and a reflection unit. The method includes: acquiring a depth image from the ranging unit, and acquiring a vertical projection distance from the ranging unit to a projection plane based on the depth image; acquiring position information of a center point of a projection picture in the depth image based on an elevation angle of the reflection unit and the vertical projection distance; acquiring a projection distance between the projection unit and the projection picture based on the position information; and performing focus adjustment on the projection unit based on the projection distance.

Abstract: A projection optical system applicable to a head-up display device mounted on an automobile includes an image generation unit, a first reflection unit, a light splitting device, a first lens, a second reflection unit, and a second lens that are successively arranged in a light exit direction; and a controller configured to control, based on timing, an image emitted from the connected image generation unit and light exiting from the connected light splitting device. When the image generation unit emits the first image, the light exits only from the light reflection side of the light splitting device, such that the first image is emitted and imaged through the first lens. When the image generation unit emits the second image, the light exits only from the light transmission side of the light splitting device, such that the second image is emitted and imaged through the second lens.

Abstract: A projection optical system applicable to a head-up display device mounted on an automobile includes an image generation unit, a first reflection unit, a double-telecentric lens, a light splitting device arranged on image side of the double-telecentric lens, a first lens, a second reflection unit, and a second lens that are successively arranged in light exit direction; and a controller configured to control, based on timing, an image emitted from the image generation unit and light exiting from the light splitting device. When the image generation unit emit the first image, the light exit only from light reflection side of the light splitting device, and when the image generation unit to emit the second image, the light to exit only from light transmission side of the light splitting device, such that the first and second image are emitted and imaged through the first and second lens.

Abstract: A projection optical system applicable to a head-up display device mounted on an automobile includes an image generation unit, a first reflection unit, a double-telecentric lens, a light splitting device, a first lens, a second reflection unit, and a second lens that are successively arranged in a light exit direction; and a controller connected to the image generation unit and the light splitting device. The light splitting device with sector shape top view arranges on an image side of the double-telecentric lens. When the image generation unit emits a first image, the light splitting device swings to a first angle, such that the first image is emitted and imaged through the first lens and when the image generation unit emits a second image, the light splitting device swings to an initial position, such that the second image is emitted and imaged through the second lens.

Abstract: The present disclosure provides a projection system and a projector. The projection system includes a control unit, and includes a light source, a fly-eye lens, a DMD chip, and a projection lens that are sequentially disposed along a light path. The light source is configured to supply a projection light source; an aspect ratio of the fly-eye lens is defined as an aspect ratio desired by a projection image, and the fly-eye lens is configured to receive the projection light source, and output a parallel light to the DMD chip; the DMD chip is configured to display projection content; the projection lens is configured to project the projection content to the projection plane; and the control unit is connected to the light source and the DMD chip, and is configured to control the light source to operate and send the projection content to the DMD chip.

Abstract: A lens focus adjustment assembly and a projector are provided. The focus adjustment assembly includes: a barrel, including a barrel body and a limiting structure, the barrel body defining a receiving space, the barrel body being provided with a channel; a focus adjustment ring, sleeved onto the barrel body and provided with a groove; and a motion assembly, including a support member and a mating member, wherein the support member is configured to fix a lens and positioned in the receiving space, and the mating member extends from the support member and runs through the channel and mates with the groove. When the focus adjustment ring rotates about the barrel body, the groove mates with the mating member and drives the mating member to move back and forth along the channel, and the mating member meanwhile drives the support member to move along the axial line.

Abstract: The present disclosure provides a lens structure and a photographic device. The lens structure includes a lens barrel, a ball assembly, and a sleeve. The ball assembly is disposed on an outer surface of the lens barrel. The sleeve receives the lens barrel and the ball assembly. The sleeve is in rolling contact with the lens barrel via the ball assembly.

Abstract: The present disclosure provides a focusing device and a photographic apparatus. The focusing device includes a lens assembly, a first motor, a second motor, and a motor control board. The lens assembly includes a lens. The first motor and the second motor are respectively disposed on two opposite sides of the lens assembly. The motor control board is fixedly disposed on a side of the lens assembly, and controls the two motors to rotate, such that the first motor and the second motor drive the lens to move.

Abstract: The present disclosure provides a projection apparatus. The projection apparatus includes: a projection body, a rotation platform, wherein the projection body is rotatably connected to the rotation platform; a first drive device, arranged on the projection apparatus and configured to drive the projection body to rotate relative to the rotation platform; a base, wherein the rotation platform is rotatably connected to the base; a second drive device, arranged on the base and configured to drive the rotation platform to rotate relative to the base; and a controller, arranged on the projection apparatus and configured to control the first drive device and the second drive device.

Abstract: The present disclosure provides a projection table. The projection table includes: a table body, including a table plate and defining a receiving space under the table plate; a support and adjustment device, disposed in the receiving space, and configured to support a projector and adjust a position of the projector in the receiving space in at least one direction of a top-and-bottom direction, a back-and-forth direction, and a left-and-right direction; a first mirror, disposed in the receiving space, and configured to receive a light ray emitted from the projector and reflect the light ray; and a second mirror, disposed in the receiving space, and configured to receive the light ray reflected from the first mirror and reflect the light ray out of the receiving space.

Abstract: A method for adjusting a projection picture includes: receiving a first image, captured by a first imaging module, of a position where the projection picture is located, and a second image, captured by a second imaging module, of surroundings of a projection device; identifying, based on the first image, whether a projection shade is present within a projection range of a projecting module; identifying position information of a projection shade in response to the projection shade being present; identifying, based on the second image, movable directions and movable distances of the projection device; and controlling, based on the position information of the projection shade and the movable directions of the projection device and the movable distances in the movable directions, the position adjusting module to adjust the projection device, such that the projection device escapes from the projection shade and a complete projection picture is acquired.

Abstract: Embodiments of the present disclosure relate to a zooming projection method and a projector. The projector includes a focusing device and a lens movable along an optical axis. The method includes: acquiring a projection distance between the projector and a projection position; adjusting the lens to a target position for projection by the focusing device in response to the projection distance being within an optical zooming range; and scaling a projection image and projecting the scaled projection image in response to the projection distance being not within the optical zooming range.

Abstract: The present application discloses a dynamic projection method for target tracking and a dynamic projection device. A dynamic projection method for target tracking includes: acquiring position information of a target; determining three-dimensional spatial coordinates of the target in a first coordinate system based on the position information of the target; determining three-dimensional spatial coordinates of the target in a second coordinate system based on the three-dimensional spatial coordinates of the target in the first coordinate system; determining a deflection angle of a projection screen based on the three-dimensional spatial coordinates of the target in the second coordinate system; determining a rotation angle of a dynamic control unit based on the deflection angle; controlling the dynamic control unit to rotate by the rotation angle; and controlling a projecting unit to project the projection screen. In this way, dynamic projection for target tracking is implemented.

Abstract: A lens module and a projection device are provided. The lens module includes a sleeve, a lens barrel and a locking ring, wherein an end of the sleeve is provided with a deformable conical protrusion; an end of the lens barrel is received in the sleeve through the end of the sleeve; and the locking ring is nested on an outer side of the end of the sleeve, and an inner surface of the locking ring is provided with a conical structure mating with the conical protrusion.

Abstract: Embodiments of the present disclosure relate to a projection method based on augmented reality technology, and a projection equipment (10). In the projection method applicable to the projection equipment (10) includes, the image information of a real space (20) is captured in advance, the 3D virtual spatial model is constructed based on the image information, the optimal projection region is determined based on the 3D virtual spatial model, and a projection target (30) is projected to the optimal projection region. In this way, seamless integration of information about real world and virtual world is achieved, a user does not need to wear a complicated wearable equipment, and user experience is improved.

Abstract: Embodiments of the present disclosure, provide a projection image anti-jitter method and apparatus, and a projector. With the projection image anti-jitter method, jitter data of a projection lens is captured; jitter characteristic information and offset data are acquired by calculation; and the projection image is adjusted based on the offset data.

Abstract: The present disclosure relates to the technical field of digital projection and display, and in particular, relates to a method for controlling a focusing assembly. The focusing assembly includes a lens module, a motor, a bevel retaining piece, and a photoelectric switch. The photoelectric switch includes an optical transmitter and an optical receiver that are oppositely disposed, the motor is connected to the lens module. The method includes: receiving a current voltage signal from the photoelectric switch; determining a current position of the lens module based on the current voltage signal; controlling the motor to stop driving the lens module in response to the current position of the lens module being the predetermined position.

Abstract: Embodiments of the present disclosure provide a projector and a projection system. In the projector, a projection light source, a polarizing beam splitting prism, and a projection lens are disposed in a first direction, and the polarizing beam splitting prism is disposed between the projection light source and the projection lens; a polarized light converting component, the polarizing beam splitting prism, and an LCOS imaging chip are disposed in a second direction, and the polarizing beam splitting prism is disposed between the polarized light converting component and the LCOS imaging chip, wherein the second direction is perpendicular to the first direction.