Abstract: The present disclosure provides a projection apparatus. The projection apparatus includes: a light supply device, including an LED lamp and a collimator fly-eye lens, wherein lamp bodies of the LED lamp are arrayed and the LED lamp is capable of simultaneously emitting red, green, and blue light rays, and the collimator fly-eye lens is capable of collimating the light ray emitted by each of the lamp bodies; an optical path conversion device, configured to convert a direction of the light rays emitted by the light supply device; a DMD device, configured to process the light rays from the optical path conversion device and feed the processed light rays to the optical path conversion device; and a projection lens device; wherein the light rays transmitted by the optical path conversion device to the projection lens device to achieve image projection.

Abstract: The present disclosure provides a dual reflective micro projection optical engine. The dual reflective micro projection optical engine includes a light source and a DMD chip, and a collimating light-combining module, a fly-eye lens, a diopter prism, a reflective mirror, a relay lens, a prism assembly, and a projection lens that are successively disposed in a light exit direction of the light source, wherein a light incident surface and a light exit surface of the diopter prism are planar surfaces.

Abstract: The present disclosure provides a dual reflective micro projection optical engine. The dual reflective micro projection optical engine includes a light source and a DMD chip, and a collimating light-combining module, a fly-eye lens, a diopter prism, a reflective mirror, a relay lens, a prism assembly, and a projection lens that are successively disposed in a light exit direction of the light source, wherein a light incident surface and a light exit surface of the diopter prism are freely-curved surfaces.

Abstract: The present disclosure provides a projection lens and a projector. The projection lens includes: a first lens, a second lens, a third lens, a triple-cemented lens, a fourth lens, a prism, and a DMD chip that are successively disposed along an optical axis from an image side to an object side; wherein the first lens has a negative focal power, the second lens has a negative focal power, the third lens has a positive focal power, the triple-cemented lens has a positive focal power, and the fourth lens has a positive focal power.

Abstract: The present disclosure provides a dual reflective micro projection optical engine. The dual reflective micro projection optical engine includes a light source and a DMD chip, and a collimating light-combining module, a fly-eye lens, a reflective mirror, a diopter prism, a prism assembly, and a projection lens that are successively disposed in a light exit direction of the light source.

Abstract: Embodiments of the present disclosure, relating to the field of micro projector engines, provide a micro projection optical engine with a compact layout, small size, and convenient portability. The micro projection optical engine includes a light source and a DMD chip, and a collimating light-combining module, a fly-eye lens, a relay system, a first triangular prism, a second triangular prism, and a projection lens that are successively disposed in a light exit direction of the light source.

Abstract: Embodiments of the present disclosure, relating to the field of micro projector engines, provide a micro projection optical engine with a compact layout, small size, and convenient portability. The micro projection optical engine includes a light source and a DMD chip, and a collimating light-combining module, a fly-eye lens, a relay system, a curved prism, a triangular prism, and a projection lens that are successively disposed in a light exit direction of the light source.

Abstract: Embodiments of the present disclosure, relating to the field of micro projector engines, provide a micro projection optical engine with a compact layout, small size, and convenient portability. The micro projection optical engine includes a light source and a DMD chip, and a collimating light-combining module, a fly-eye lens, a relay system, a first triangular prism, a compensation lens, a second triangular prism, and a projection lens that are successively disposed in a light exit direction of the light source.

Abstract: The present application provides a double-telecentric projection lens. The double-telecentric projection lens includes a front lens group, a rear lens group, and an equivalent prism that are successively arranged between an image side and a DMD chip; wherein the front lens group includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens that are successively arranged, and the rear lens group includes a sixth lens, a seventh lens, an eighth lens, and a ninth lens that are successively arranged, wherein the third lens and the fourth lens constitute a double-cemented lens; and the DMD chip is configured to simultaneously emit two images, wherein during simultaneous emission of the two images from the DMD chip, the simultaneously emitted two images are emitted from the double-telecentric projection lens and imaged at different positions.

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; wherein the top view of the light splitting in disc shape includes transmission region and reflection region. The light exits only from the reflection region during the image generation unit emitting the first image and exits only from the transmission region during the image generation unit emitting the second image, such that the first image and the second image are emitted and imaged through the first lens and 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 reflection unit, a double-telecentric lens, a light splitting device, and an imaging lens that are successively arranged in a light exit direction. The light splitting device needs to be arranged on an image side of the double-telecentric lens and configured to reflect a light beam for imaging in light beams emitted by the image generation unit. The double-telecentric lens is configured to adjust a size of the projection image. The imaging lens is configured to adjust a virtual image distance of the projection image and output the light beams of the projection image to achieve projection imaging.

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: A projection optical system includes an image generation unit, a first reflection unit, a double-telecentric lens, a second reflection unit, and an imaging lens that are successively arranged in a light exit direction. The double-telecentric lens is configured to adjust a size of the projection image. The imaging lens is configured to adjust a virtual image distance of the projection image and output light beams of the projection image to achieve projection imaging. In the projection optical system according to the embodiments of the present disclosure, the size of the projection image is flexibly adjusted by the double-telecentric lens, and the virtual image distance of the projection image is flexibly adjusted by the imaging 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: 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: The present disclosure provides a projection apparatus. The projection apparatus includes: a light supply device, including an LED lamp and a collimator fly-eye lens, wherein lamp bodies of the LED lamp are arrayed and the LED lamp is capable of simultaneously emitting red, green, and blue light rays, and the collimator fly-eye lens is capable of collimating the light ray emitted by each of the lamp bodies; an optical path conversion device, configured to convert a direction of the light rays emitted by the light supply device; a DMD device, configured to process the light rays from the optical path conversion device and feed the processed light rays to the optical path conversion device; and a projection lens device; wherein the light rays transmitted by the optical path conversion device to the projection lens device to achieve image projection.

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: 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.