5050results about "Projectors" patented technology

The invention provides a projection lens, which comprises seven lenses from a projection surface to an image source surface along an optical axis: a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power and a fifth lens with negative focal power, the second lens has positive focal power; the surface of the image source side of the third lens is a convex surface; the surface of the projection side of the fourth lens is a concave surface, and the surface of the image source side of the fourth lens is a convex surface; the surface of the projection side of the fifth lens is a concave surface, and the surface of the image source side of the fifth lens is a concave surface; the surface of the projection side of the sixth lens is a convex surface, and the surface of the image source side of the sixth lens is a convex surface; the surface of the projection side of the seventh lens is a convex surface, and the curvature radius R7 of the surface of the projection side of the fourth lens and the curvature radius R8 of the surface of the image source side of the fourth lens meet the formula:-0.5 lt; (R7-R8) / (R7 + R8) lt; and-0.1. According to the projection lens provided by the invention, the projection quality of the projection lens is improved through the reasonable configuration of the surface types of the lenses and the reasonable matching of the focal power.

The invention provides a projection lens, which comprises seven lenses from a projection surface to an image source surface along an optical axis: a first lens with negative focal power; the second lens has positive focal power; the surface of the image source side of the third lens is a convex surface; the surface of the projection side of the fourth lens is a concave surface, and the surface of the image source side of the fourth lens is a convex surface; the surface of the image source side of the fifth lens is a concave surface; the surface of the projection side of the sixth lens is a convex surface, and the surface of the image source side of the sixth lens is a convex surface; the surface of the projection side of the seventh lens is a convex surface, and the surface of the image source side of the seventh lens is a convex surface; the surface curvature radius R7 of the projection side of the fourth lens and the surface curvature radius R8 of the image source side of the fourth lens meet the following formula:-0.6 lt; (R7-R8) / (R7 + R8) lt; 0. According to the projection lens provided by the invention, the projection quality of the projection lens is improved through the reasonable configuration of the surface types of the lenses and the reasonable matching of the focal power.

An aperture unit having an optical axis is provided, which includes a fixed portion having a first surface and including a protrusion formed on the first surface, a guiding element movably connected to the fixed portion and including a through hole, a first blade movably connected to the guiding element and the fixed portion, and a driving assembly use for driving the guiding element to move for moving the first blade. The optical axis passes through the through hole. The first surface has a first accommodating space having a recessed structure to accommodate the guiding element, and the protrusion extends toward the first blade.

An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect the optical element. The movable portion may move relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion.

The invention provides a warning method and system of an intelligent tripod warning lamp, and relates to the technical field of intelligent vehicle-mounted technologies. When a vehicle is in danger, vehicle state information is collected to automatically generate a warning trigger instruction, and a rear target projection point is determined based on a road type and a vehicle position; projection parameters are calculated in combination with vehicle postures, a vehicle-mounted projection light source is driven to generate a triangular warning graph on the ground at the target distance, meanwhile, light beam output is adjusted in a self-adaptive mode according to environment illumination and visibility, and it is guaranteed that the graph is clear and visible and conforms to human eye safety; the projection position and parameters are dynamically updated to maintain stable warning during the duration of the dangerous state, and the system is automatically closed and reset when the danger is relieved or manual termination is performed, so that the risk of manual arrangement is avoided, and long-distance stable warning is realized.

A charging door provided with a projection lamp and a method of controlling projection of the same, includes a base, a charging door panel, a connection member, and a projection lamp module, wherein a charging port is formed in the base, and a vehicle is charged through the charging port, the charging door panel is pivotably mounted to the base, the connection member connects the base and the charging door panel with each other, and a mounting hole is formed in the connection member, and the projection lamp module is mounted in the mounting hole of the connection member, and the projection lamp module is electrically connected to a controller to be turned on or off according to a command signal of the controller and to project light of a predetermined color, based on a command signal of the controller.

An optical element driving mechanism comprises a first movable part, a fixed part, a driving assembly and a first intermediate element. The first movable part is used for connecting a first optical element. The first movable part can move relative to the fixed part. The driving assembly is used for driving the first movable part to move relative to the fixed part. The first intermediate element is movably connected with the first movable part.

The invention provides a projection lens, which comprises seven lenses from a projection surface to an image source surface along an optical axis: a first lens with negative focal power; the surface of the projection side of the second lens is a convex surface, and the surface of the image source side of the second lens is a convex surface; the surface of the image source side of the third lens is a convex surface; the surface of the projection side of the fourth lens is a concave surface, and the surface of the image source side of the fourth lens is a convex surface; the surface of the image source side of the fifth lens is a concave surface; the surface of the projection side of the sixth lens is a convex surface, and the surface of the image source side of the sixth lens is a convex surface; and the surface of the projection side of the seventh lens is a convex surface. According to the projection lens provided by the invention, the projection quality of the projection lens is improved through the reasonable configuration of the surface types of the lenses and the reasonable matching of the focal power.

The invention discloses a carrier of a camera module, a manufacturing method and the camera module, the carrier of the camera module comprises a main body, the main body comprises a plurality of side parts, each side part is arranged around the optical axis of the camera module, a corner part is formed at the joint of two adjacent side parts, and the main body is subjected to first injection molding and has first rigidity; the insert is wrapped on the main body, and the insert is made of a metal material; the buffering part is formed at the corner part through secondary injection molding, the buffering part comprises a buffering section, the buffering section protrudes out of the surface of the main body in the movement direction of the carrier, the buffering part has second rigidity, and the second rigidity is smaller than the first rigidity. Through the first injection molding and the second injection molding, high integration of the main body, the insert and the buffer part can be realized, in other words, the integration of the carrier can be improved, the overall size of the carrier is effectively reduced, meanwhile, the supply chain and the assembly process of the carrier are simplified, the production efficiency of the carrier and the camera module is improved, and the manufacturing cost is reduced.

The invention provides a projection lens, which comprises seven lenses in total, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from a projection surface to an image source surface along an optical axis, the second lens has positive focal power; the surface of the image source side of the third lens is a convex surface; the surface of the projection side of the fourth lens is a concave surface, and the surface of the image source side of the fourth lens is a convex surface; the surface of the image source side of the fifth lens is a concave surface; the surface of the projection side of the sixth lens is a convex surface, and the surface of the image source side of the sixth lens is a convex surface; the seventh lens has positive focal power; wherein the surface curvature radius R1 of the projection side of the first lens and the surface curvature radius R2 of the image source side of the first lens meet the following formula:-0.8 lt; (R1 + R2) / (R1-R2) lt; and 0.5. According to the projection lens provided by the invention, the projection quality of the projection lens is improved through the reasonable configuration of the surface types of the lenses and the reasonable matching of the focal power.

Systems and methods described herein relate to using silver-coated twisted-coil polymer fibers to adjust the shape of inflatable structures, such as to provide an adjustable curved projection screen. In one embodiment, a method includes providing an adjustable inflation system capable of providing an electrical stimulus to a set of fibers within an inflatable structure where the set of fibers can adjust a surface of the inflatable structure from a first state to a second state based on the electrical stimulus.

The invention provides a projection lens, which comprises five lenses in total, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from a projection surface to an image source surface along an optical axis, the surface of the projection side of the second lens is a convex surface, and the surface of the image source side of the second lens is a convex surface; the surface of the projection side of the third lens is a concave surface, and the surface of the image source side of the third lens is a concave surface; the surface of the projection side of the fourth lens is a convex surface, and the surface of the image source side of the fourth lens is a convex surface; the surface of the projection side of the fifth lens is a convex surface, and the surface of the image source side of the fifth lens is a convex surface; wherein the real image height IH corresponding to the maximum field angle of the projection lens and the effective focal length f of the projection lens meet the following conditions: 0.6 lt; iH / flt; and 0.8. According to the projection lens provided by the invention, the projection quality of the projection lens is improved through the reasonable configuration of the surface types of the lenses and the reasonable matching of the focal power.

The invention discloses a laser projection device, and relates to the technical field of illumination, and the laser projection device comprises a reflection cylinder and a laser light source. A reflecting surface is formed on the side of the reflecting cylinder; a plurality of reflecting surfaces are arranged and are planes; the laser light source is used for emitting a lighting beam, so that the lighting beam is projected to the reflecting surface; wherein the reflection cylinder can rotate around the axis of the reflection cylinder, so that the surface normal direction of the reflection surface is changed; and the reflecting surface is in a projection shape. According to the technical scheme provided by the invention, the definition of light spots can be improved.

The invention relates to the technical field of optical imaging, and discloses an AR optical projection machine and an optical display system, the projection machine comprises a projection lens group, a color combination prism assembly and a three-color display array; the projection lens group comprises a diaphragm STO, a first lens, a second lens, a third lens and a fourth lens. The color combination prism assembly comprises a plurality of prisms which are glued with one another, and a film coating structure which is used for reflecting red light and blue light and transmitting green light is arranged on each prism; the three-color display array comprises three display chips; wherein the FOV (field of view) of the AR optical projection machine is greater than or equal to 30 degrees and less than or equal to 40 degrees; the ratio of the total optical length TTL of the AR optical projection machine to the effective focal length f of the system meets the condition that TTL / f is larger than or equal to 5.0 and smaller than or equal to 7. The field angle of the system is limited within the range of 30-40 degrees, the ratio of the total optical length TTL to the effective focal length f is kept within 5.0-7.7, an imaging field meeting the AR application requirement can be obtained within the limited optical path length, meanwhile, the overall compactness of the optical system is considered, and the optical system can be more easily integrated into small-size near-to-eye display equipment.

The invention provides a projection lens, which comprises seven lenses from a projection surface to an image source surface along an optical axis: a first lens with negative focal power; the second lens has positive focal power; the surface of the image source side of the third lens is a convex surface; the surface of the projection side of the fourth lens is a concave surface, and the surface of the image source side of the fourth lens is a convex surface; the surface of the projection side of the fifth lens is a convex surface, and the surface of the image source side of the fifth lens is a concave surface; the surface of the projection side of the sixth lens is a convex surface, and the surface of the image source side of the sixth lens is a convex surface; the seventh lens has positive focal power; the surface curvature radius R7 of the projection side of the fourth lens and the surface curvature radius R8 of the image source side of the fourth lens meet the following formula:-0.6 lt; (R7-R8) / (R7 + R8) lt; 0. According to the projection lens provided by the invention, the projection quality of the projection lens is improved through the reasonable configuration of the surface types of the lenses and the reasonable matching of the focal power.

The invention provides a projection optical system. The projection optical system comprises a lens barrel and a color combination prism assembly which are sequentially arranged from the imaging side to the image source side in the optical axis direction. A lens group and a spacing assembly are accommodated in the lens barrel; the lens group comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from the imaging side to the image source side in the optical axis direction. The spacing assembly comprises first, second and third spacing elements; the color combination prism assembly comprises a color combination prism, a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip; a blue light band-pass filtering film and a red light band-pass filtering film are respectively arranged on two diagonal surfaces of the color combination prism; the green light-emitting chip is perpendicular to the optical axis, and the red light-emitting chip and the blue light-emitting chip are parallel to the optical axis; the projection optical system also satisfies the following conditions: (CT1 + CT2) / CP1 is more than 0.90 and less than 1.65; 4.90 < d2m / (T23 + CT3) < = 7.30; and 5.50 < d3s / T34 < 9.80.

An actuator arrangement for use in a camera is disclosed. The camera comprises two or more camera elements including an image sensor and one or more optical elements for forming, or aiding forming of, an image of an object on the image sensor. The actuator arrangement comprises: a first part defining a first axis; a first actuator for providing a first type of movement of one or more of the camera elements relative to the first part; a second actuator for providing a second, different type of movement of one or more of the camera elements relative to the first part; a controller configured to (a) cause the first actuator to move one or more of the camera elements so as to provide a first optical image stabilisation (OIS) effect, and (b) cause the second actuator to move one or more of the camera elements so as to provide a second OIS effect. The first and second OIS effects combine to provide an overall OIS effect that is greater than either of the first and second OIS effects.

A beamsplitter can include a first surface with a diffractive optical element, a second surface normal to the first surface, and a beam splitting surface arranged at an angle to the second surface that is less than 45 degrees. The beamsplitter may be configured to illuminate the entire second surface in response to an input beam at the first surface.

A low vision aid system including a camera module to be used with a mobile device, including a macro camera configured to focus on near-field objects that is integrated within the low vision aid camera module and an illumination source structured to illuminate a field of view associated with the macro camera, a battery power supply and a wireless communication module. The wireless communication module establishes an isolated Wi-Fi connection to the mobile device. The isolated Wi-Fi connection prevents the mobile device from communicating over other Wi-Fi networks while the isolated Wi-Fi connection is maintained. The wireless communication module receives, via the isolated Wi-Fi connection, instructions from the mobile device, that are associated with operation of the macro camera, and sends via the isolated Wi-Fi connection, a video bitstream to the mobile device based on the instructions.

The invention discloses an integrated galvanometer laser projection method and an integrated galvanometer laser control device. The integrated galvanometer laser projection method comprises the steps that 1, a control card stores various data in a classified mode; when an upper computer issues a system parameter instruction, a communication interface is automatically switched according to a communication mode of the upper computer, and instruction data is analyzed and stored in an EEPROM (Electrically Erasable Programmable Read-Only Memory); 2, after the upper computer issues an instruction, the control card cooperatively controls the on-off state of the laser light source and the deflection angle of the laser galvanometer, and the position and the focal length of the lens are adjusted; 3, positioning an instruction according to a target point of the upper computer; the control card cooperatively controls the laser and the galvanometer to coarsely position the center of the target; and performing fine positioning on the center of the target by taking the target point obtained by coarse positioning as an initial reference position. The integrated galvanometer laser control device has the advantages that the environmental adaptability, the control precision and the operation convenience of the integrated galvanometer laser control device are remarkably improved.

A camera module includes: a housing; a reflecting module; and a lens module disposed behind the reflecting module, wherein the moving holder is disposed to be movable in one axial direction, approximately perpendicular to the optical axial direction and the one axial direction with respect to the housing, the lens module includes a carrier supported by the housing to be linearly movable in approximately the optical axial direction, the lens module includes two or more lens barrels of which some are fixed, and the others are supported by the housing to be linearly movable in approximately the optical axial direction, and lenses are distributed and provided into the at least two lens barrels.

The invention relates to the technical field of projection modules, and particularly discloses an LCOS laser projection module, which comprises a laser light source module, a laser speckle eliminator, a reflector, a diffuser, a collimating lens, a fly-eye lens, a relay lens, a first linear polarizer, a polarizing beam splitter, an LCOS chip, a second linear polarizer and a projection lens which are sequentially arranged along a light transmission path, the laser light source module is provided with a light source optical axis and is used for emitting light, and the light is projected by the projection lens after being modulated along a light transmission path to form a projection image. The light emitted by the laser light source has the advantages of narrow divergence angle, small light-emitting area and good light concentration and collimation, the resolution of a projected image can be improved, the projected image is bright in color and high in definition, and the requirements of simple structure and small size are met. Meanwhile, the laser speckle can be eliminated through the matching of the laser speckle eliminator and the diffusion sheet, and the projection image can meet the high contrast through the existence of the first linear polarizer and the second linear polarizer.

An optical-mechanical structure and a projection device relate to the technical field of display. The optical-mechanical structure comprises a mounting frame, a display panel and at least one light-transmitting element, the light-transmitting element is arranged on the display side and / or the non-display side of the display panel, the display panel and the light-transmitting element are arranged on the inner peripheral side of the mounting frame at intervals in the first direction, and the display panel comprises a display surface; wherein the display panel, the mounting frame body and the at least one light-transmitting element define at least one cavity, the cavity is filled with cooling liquid, a liquid cooling pipeline and a plurality of connecting channels are arranged on the mounting frame body, the connecting channels are communicated between the liquid cooling pipeline and the cavity, and in orthographic projection on the display surface, the liquid cooling pipeline is communicated with the cavity. All the connecting channels communicated with the same cavity are located on the same side of the display panel.

Disclosed are an apparatus, system, and method of a visual sensor of a tactical gear to use facial recognition technology to identify a person of interest and to cause a responsive device on the tactical gear to notify a wearer. In one embodiment, a personal protective equipment includes a responsive device integrated in a tactical gear and a visual sensor. The visual sensor of the tactical gear identifies a target person using an identity artificial intelligence model. The responsive device notifies a wearer of the tactical gear when the visual sensor identifies the target person. Further, the responsive device notifies an additional person when the visual sensor identifies a threat to a protectee of the wearer and the additional person. The responsive device may vibrate when the visual sensor of the tactical gear detects an ambient threat to the protectee of the wearer.

The invention provides a laser assembly and a projection device, and the laser assembly comprises a mounting substrate and a light-emitting unit, the light-emitting unit comprises a tube shell, a bottom plate, a plurality of heat sinks and a plurality of light-emitting chips, the plurality of light-emitting chips are pasted on the bottom plate through the heat sinks, and the light-emitting chips are used for receiving a driving signal of the mounting substrate and emitting a laser beam; the colors of the light-emitting chips in different light-emitting units are different, and the central wavelengths of the light-emitting chips in the same light-emitting unit are different. According to the invention, the miniaturization and high-power effects of parts and devices can be realized.

The invention provides a vehicle projection curtain system and a vehicle interior projection system. The vehicle projection curtain system comprises a curtain folding and unfolding mechanism and a bending guide rail mechanism. The curtain folding and unfolding mechanism comprises a curtain frame, a curtain body installed on the curtain frame in a folding and unfolding mode, a curtain sliding block fixed to the curtain body, a curtain fixing guide rail, a folding and unfolding driving source and a folding and unfolding transmission unit. The curtain fixing guide rail is provided with a first sliding groove. The bending guide rail mechanism comprises a rotating shaft, a curtain movable guide rail rotatably installed on the rotating shaft, a form switching driving source and a switching transmission unit, a second sliding groove is formed in the curtain movable guide rail, and the form switching driving source is connected with the curtain movable guide rail through the switching transmission unit. The rectangular curtain can be stored and unfolded, and the curtain movable guide rails are stored in the side interior space in the curtain storage state, so that the whole curtain has a small occupied space, the abrupt feeling in the vehicle interior environment is avoided, and the attractiveness of the vehicle interior environment is improved.

The embodiments of the present invention are directed to providing a diaphragm module, and a camera module including the same, capable of reducing magnetic interference between an AF magnet and a ring magnet. In addition, according to the embodiments, the arrangement of coils included in the diaphragm module can be diversified.

The utility model discloses a remote projection display device with a rotary light shield. The rotary light shield comprises a top light shield plate and a plurality of side light shield plates. The top shading plate comprises an upper shading plate and two wing plates, and the tops of the two wing plates are rotatably connected with the tops of the two side walls of the shell respectively; the multiple side shading plates are arranged on the two side walls of the shell correspondingly, and the tops of the side shading plates are rotationally connected with the tops of the side walls of the shell; the wing plate and the side shading plate which are arranged on the same side wall of the shell rotate around the same rotating shaft; after the rotary light shield is opened, the top light shield plate rotates relative to the window, the side light shield plates are connected with the wing plates and the side walls of the shell, and the wing plates and the side light shield plates arranged on the same side wall of the shell form side light shield plates of the rotary light shield; after the rotary light shield is closed, the wing plate and the side light shield which are arranged on the same side wall of the shell coincide with the side wall of the shell. When the remote projection display device is not used, the light shield can be folded, so that the space is not occupied, and the storage is convenient.