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711 results about "Projection lens" patented technology

Projection lens

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.
Owner:JIANGXI LIANCHUANG ELECTRONICS CO LTD

Projection lens

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.
Owner:JIANGXI LIANCHUANG ELECTRONICS CO LTD

Long-exit-pupil-distance broadband common-aperture composite simulation optical system

The invention provides a long-exit-pupil-distance broadband common-aperture composite simulation optical system, and belongs to the technical field of target scene composite analog simulation. A broadband objective lens group A, a space beam combiner group B and a long-wave infrared projection lens group D are sequentially arranged in the optical system from left to right along light, a visible light projection lens group C is located on the upper side of the space beam combiner group B, and a long-wave infrared projection lens group C is located on the lower side of the space beam combiner group B; a visible light image plane is positioned on the right side of the visible light projection lens group C; the medium-wave infrared projection lens group E is located on the lower side of the space beam combiner lens group B, the medium-wave infrared image surface is located on the lower side of the medium-wave infrared projection lens group E, the long-wave infrared image surface is located on the right side of the medium-wave infrared image surface, and the exit pupil position is located on the left side of the broadband objective lens group A; the problem that a single-channel target modulo system only adapts to simulation of imaging guidance equipment of a specific wave band and is not suitable for semi-physical simulation tests of three-mode composite imaging guidance equipment and two-mode composite imaging guidance equipment is solved.
Owner:HARBIN XINGUANG OPTIC-ELECTRONICS TECH CO LTD

Reflector structure for projection imaging lens

The invention discloses a reflector structure for a projection imaging lens, which comprises a reflector body, the reflector body is placed in an optical projection imaging lens with more than two lenses, and the reflector body comprises a middle light-passing area, a middle light-passing area and a middle light-passing area, so that light of the optical projection imaging lens is emitted through the middle light-passing area to become direct emergent light; the upper end of the first reflecting region is small and the lower end is large; the upper end of the second reflecting region is large and the lower end is small; the optical projection imaging lens is vertically placed, the light source or the image source is arranged below the optical projection imaging lens, and the lens is arranged above the optical projection imaging lens; the reflector body is configured to be matched with a circular projection imaging lens in rotational symmetry or a projection imaging lens in a non-rotational symmetry structure. The surface brightness and uniformity of the light-emitting surface of the projection lens are improved.
Owner:YEJIA OPTICAL TECH GUANGDONG CORP

Projection lens

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.
Owner:JIANGXI LIANCHUANG ELECTRONICS CO LTD

Projection lens, projection system and electronic equipment

The invention relates to the technical field of optics, in particular to a projection lens, a projection system and electronic equipment. The projection lens comprises a first lens group, an aperture diaphragm and a second lens group which are sequentially arranged from a projection surface to an image source surface along an optical axis, the first lens group has negative focal power, and the second lens group has positive focal power; the first lens group consists of a first lens, a first sub-lens group and a diaphragm front lens which are sequentially arranged from a projection surface to an image source surface along an optical axis; the first sub-lens group comprises at least one lens with negative focal power; the first lens and the diaphragm front lens respectively have positive focal power, and the first sub-lens group has negative focal power; the second lens group consists of a diaphragm rear lens and a second sub-lens group which are sequentially arranged from the projection surface to the image source surface along the optical axis; the second sub-lens group has positive focal power and comprises a group of balsaming lenses with positive focal power, and the diaphragm rear lens has negative focal power. The focusing range of the projection lens is larger than or equal to 500 mm.
Owner:MECH MIND ROBOTICS TECH LTD

Projection lens

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.
Owner:JIANGXI LIANCHUANG ELECTRONICS CO LTD

Projection lens

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.
Owner:HEFEI LIANCHUANG OPTICAL CO LTD

AR optical projection ray machine and optical display system

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.
Owner:HUAQIN TECH CO LTD

Projection lens

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.
Owner:JIANGXI LIANCHUANG ELECTRONICS CO LTD

projection lens

The application provides a projection lens, which comprises eight lenses in sequence along an optical axis from a projection surface to an image source surface, and the eight lenses comprise: a first lens with positive focal power, the projection side of which is a convex surface; a second lens with negative focal power, the image source side of which is a concave surface; a third lens with negative focal power, the projection side of which is a convex surface and the image source side of which is a concave surface; a fourth lens with positive focal power, the projection side of which is a convex surface; a fifth lens with negative focal power, both the projection side and the image source side of which are concave surfaces; a sixth lens with positive focal power, both the projection side and the image source side of which are convex surfaces; a seventh lens with positive focal power, both the projection side and the image source side of which are convex surfaces; and an eighth lens with positive focal power, both the projection side and the image source side of which are convex surfaces. The projection lens provided by the application has small distortion, high resolution, low aberration, high relative luminance and good projection effect through reasonable configuration of the surface types of the lenses and reasonable matching of the focal powers.
Owner:JIANGXI LIANCHUANG ELECTRONICS CO LTD

Pixelized vehicle lamp optical assembly, vehicle lamp and vehicle lamp illumination method

The invention relates to a pixelated vehicle lamp optical assembly, a vehicle lamp and a vehicle lamp illumination method. The pixelated vehicle lamp optical assembly comprises a light source part, the light source part comprises a colored light source and a white light source, the colored light source can output colored light beams, and the white light source can output white light beams; the projection lens can receive the colorful light beams or the white light beams output by the light source part, so that the pixelated automobile lamp optical assembly outputs white light projection or colorful projection; wherein the pixelated automobile lamp optical assembly has a first state or a second state, in the first state, the optical axis of the projection lens corresponds to the color light source, and the optical axis of the projection lens does not correspond to the white light source, so that the color light beam directly outputs first optical projection along the optical axis of the projection lens.
Owner:JIAXING HELLA LIGHTING CO LTD

Achromatic imaging optics

An achromatic imaging optic (20) is used to image an output field (16a) along a beam path (23) of the imaging optic (20) into a target field (14) for use in DUV microlithography. The imaging optic (20) has a plurality of lenses (L1 to L13), each containing less than 5% lead oxide. At least one of the lenses (L5, L7, L9) is made of a high-dispersion optical material with an Abbe number less than 50. At least one of the lenses (L1 to L4, L6, L8, L10 to L13) is made of a low-dispersion optical material with an Abbe number greater than 50. This results in an imaging optic with simplified manufacturing. Depending on the design, the imaging optics can be part of an optical system of a projection exposure system as an illumination lens (20) or as a projection lens.
Owner:CARL ZEISS SMT GMBH

LCOS laser projection module

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.
Owner:JIANGXI LIANHAO OPTOELECTRONIC CO LTD

Lighting device for a motor vehicle, in particular a high-definition headlamp

A lighting device for a motor vehicle, in particular a high-definition headlamp, includes an imaging component that has an active surface on which light-emitting diodes or laser diodes are arranged in a matrix to generate pixels in a light distribution in a targeted manner, and a projection lens with which the light emitted from the active surface is projected outward from the motor vehicle when the lighting device is in operation. The lighting device is designed to switch the projection lens from a first setting to a second and from the second setting to the first. The projection lens has a first focal length in the first setting, and a second focal length in the second setting, which is greater than the first focal length.
Owner:HELLA GMBH & CO KGAA

Optical element, optical system and method for manufacturing an optical element

The invention relates to an optical element, in particular a lens (1) or a mirror, preferably for a semiconductor technology system, in particular for a lighting system or for a projection lens of a projection exposure system, comprising: a substrate (2), and a coating (3) which is applied to a surface (2a) of the substrate (2). The coating (3) has at least one refractive layer (4) with a location-dependent varying thickness (d(x,y)), wherein a minimum thickness (dMin) of the refractive layer (4) is at least 5 ΔB, preferably at least 10 ΔB, particularly preferably at least 15 ΔB, and wherein a difference (dMax- dMin) between a maximum thickness (dMax) and the minimum thickness (dMin) of the refractive layer (4) is greater than ΔB, preferably greater than 2 ΔB, particularly greater than 3 ΔB, where ΔB denotes the useful wavelength of the optical element (1).The invention also relates to an optical system, preferably a semiconductor technology system, comprising: a beam source for providing useful radiation at a useful wavelength (<B), preferably in the DUV wavelength range, in particular at 468 nm, 365 nm, 248 nm, 193 nm or 157 nm, and at least one optical element (1) designed as described above.
Owner:CARL ZEISS SMT GMBH

Light-emitting unit for motor vehicle

The invention relates to a lighting unit for a motor vehicle, comprising: a light source row (1) emitting light rays (1a); a support (6) on which the rows of light sources are arranged; a primary lens (2) having an optical axis (4) and a first incident surface (5); and a projection lens (3). The row of light sources comprises light sources that can be individually activated and aligned in a first direction (d1). The support forms an angle alpha with the optical axis other than 90 degrees. The first incident surface includes a planar upper portion (5a), a planar lower portion (5b), and a connecting portion (5c). The lower portion is offset relative to the upper portion with respect to the optical axis. The upper portion and the lower portion are connected by a connecting portion.
Owner:VALEO VISION SA

Projection exposure process, projection lens and projection exposure system for microlithography

In a projection exposure method for exposing a substrate arranged in the region of an image plane of a projection lens with at least one image of a pattern arranged in the region of an object plane of the projection lens, using radiation from a wavelength range around a design wavelength < 260 nm, a substrate (SUB) is coated with a relatively thick radiation-sensitive photoresist layer (RS) and exposed using a projection lens (PO). This lens produces a focus at a design focus position (FOCO) at the design wavelength and, for other wavelengths outside the wavelength range, offset focus positions from an axially extended focus area (ΔFOC) around the design focus position (FOCO). The projection lens is designed as a single-waisted or double-waisted system.During an exposure time interval, different wavelengths from the wavelength range around the design wavelength are used such that the axial extent of the focus area is at least as large as the layer thickness. The projection lens is optically corrected for chromatic aberration (CHV) such that, in the region of the design wavelength, the image scale is essentially independent of the wavelength, so that a change in wavelength of 1 picometer results in a maximum variation of 2 nm between the position of an image point corresponding to an object point within an image field.
Owner:CARL ZEISS SMT GMBH

Projection exposure process and projection exposure system for microlithography

In a projection exposure method for exposing a substrate arranged in the area of ​​an image plane of a projection lens with at least one image of a pattern arranged in the area of ​​an object plane of the projection lens with radiation from a wavelength range around a design wavelength < 260 nm, a projection lens (PO) is used which is optically corrected such that at the design wavelength a focus is generated in a design focus position (FOC0) and for other wavelengths from the wavelength range offset focus positions are generated from an axially extended focus area (ΔFOC) around the design focus position (FOC0).The projection lens has a wavefront manipulation system (WFM) for controllably influencing the wavefront of the projection radiation extending from the object plane to the image plane, wherein the wavefront manipulation system (WFM) has at least one manipulator which, in response to control signals from a control unit within a usable setpoint range, undergoes setpoint changes that lead to changes in the wavefront. The method comprises the following steps: . Coating the substrate (SUB) with a radiation-sensitive photoresist layer (RS) having a layer thickness (SD); exposing the photoresist-coated substrate with the image of the pattern using radiation that, under the control of a control unit, has different wavelengths from a wavelength range with a spectral bandwidth around the design wavelength according to a predetermined temporal sequence; synchronizing a wavefront manipulation system (WFM) control with the temporal sequence of radiation of different wavelengths such that a lateral chromatic aberration caused by switching between different wavelengths is at least partially compensated.
Owner:CARL ZEISS SMT GMBH

Micro projection lens and projection equipment

The invention belongs to the technical field of projection display, and particularly relates to a micro-projection lens and projection equipment, the micro-projection lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis direction, the first lens, the second lens and the fifth lens respectively have positive focal power, and the third lens and the fourth lens respectively have negative focal power; wherein under the same temperature variation, the focal power variation of the second lens is smaller than the other focal power variation; the focal power phi 2 of the second lens and the focal power phi 3 of the third lens meet the condition that phi 2 / phi 3 is greater than or equal to 0.5 and less than or equal to 0.7; and / or the effective focal length f2 of the second lens and the effective focal length f3 of the third lens respectively satisfy the following conditions with the total effective focal length EFL: 0.5 < = f2 / EFL < = 1.0, and-1.0 < = f3 / EFL < =-0.2. The micro projection lens is good in temperature drift stability, is not liable to defocus after being used for a long time, and improves the use experience of a user.
Owner:SHENZHEN YIWEN TECH LTD

Microlithographic projection lens

Microlithographic projection lens with a plurality of lenses (20A-20J, 24, 25), wherein the lenses (20A-20J, 24, 25) define an imaging beam path (17) between an object plane (12) and an image plane (21), and wherein the lenses (20A-20J, 24, 25) are designed to image a photomask (13) arranged in the object plane (12) onto a lithographic object (15) arranged in the image plane (21). The projection lens comprises a frame device (23) wherein support feet (26A-26H, 46A-46H, 47A-47H) are attached to the frame device (23) and wherein the lenses (20A-20J, 24, 25) are supported by the support feet (26A-26H, 46A-46H, 47A-47H), wherein a first support foot (46A-46H) supports a first lens (24), wherein a second support foot (47A-47H) supports a second lens (25) and wherein a third support foot (26A-26H) supports a third lens (20A-20J).The first support foot (46A-46H) is attached to the frame device (23) at the same angular position (30) as the second support foot (47A-47H). The third support foot (26A-26H) is arranged at an angular position in which neither the first support foot (46A-46H) of the first lens (24) nor the second support foot (47A-47H) of the second lens (25) is located.
Owner:CARL ZEISS SMT GMBH

Projector asynchronous focusing method, device, equipment and medium

The invention relates to the technical field of projection, and discloses a projector asynchronous focusing method and device, equipment and a medium. The method comprises the following steps: controlling a projection lens of a projector to move at a constant speed along an optical axis; in the constant-speed displacement process of the projection lens, an image sampling device is controlled to carry out continuous image sampling on a projection picture of the projection lens, and multiple groups of first sampling images are obtained; performing definition evaluation on each first sampling image to obtain a first definition evaluation value; based on the displacement speed of the projection lens and the first definition evaluation value, predicting the position of the projection lens when the definition of the projection picture reaches a peak value, and obtaining a target focusing position; and controlling the projection lens to move to the target focusing position. According to the embodiment of the invention, the automatic focusing speed can be improved on the basis of keeping the focusing precision.
Owner:SHENZHEN SDMC TECH CO LTD

Lamp for drawing

A drawing lamp forms a drawing light distribution pattern by emitting emitted light from a light emitting element toward a front of the lamp via a projection lens. A light shielding plate is disposed between the light emitting element and the projection lens. The light shielding plate is configured to shield a part of light traveling from the light emitting element to the projection lens. In the projection lens, a first projection lens portion for long-distance drawing and a second projection lens portion for short-distance drawing are integrally formed in a state where the first projection lens portion and the second projection lens portion are aligned in a required direction intersecting a front-rear direction of the lamp and in a state where lens effective surfaces of the first projection lens portion and the second projection lens portion are adjacent to each other.
Owner:KOITO MFG CO LTD

Near-to-eye display method and near-to-eye display equipment

The invention relates to the technical field of near-to-eye display, and provides a near-to-eye display method and near-to-eye display device.According to the method, a high-resolution original electronic image is generated through a micro display screen, accurate information content is provided for a user, and the quality and definition of an information source are ensured. The collimating projection lens converts divergent light of the micro display screen into parallel light beams, disordered scattering of light is reduced, and images of the micro display screen are imaged at an infinite distance after passing through the collimating lens. Parallel light beams are directionally regulated and controlled through micro-structure devices such as a micro-cube-corner prism array or an orthogonal reflector array, the parallel light beams are converged to a small-size exit pupil area, on-demand display of image information is achieved, an image can be seen only when the sight line of a user is aligned, and therefore continuous interference of the information on the normal view field of the user is avoided, and the user experience is improved. The comfort and concentration degree of visual experience are improved, the information transmission effect is optimized, and more natural, comfortable and efficient man-machine interaction experience is provided for near-eye display equipment.
Owner:SHENZHEN PENCILVISION TECH CO LTD

Split-screen projection device

PCT designated stageWO2025256511A1ProjectorsImaging qualityProjection image
Provided in the present invention is a split-screen projection device. The split-screen projection device comprises: a projection lens module which sequentially comprises, from a first side to a second side, a plurality of lenses having diopters and an imaging light valve; and a light-splitting module located on the first side of the projection lens module and disposed on an optical axis of the projection lens module, wherein the light-splitting module has a plurality of reflecting surfaces, the plurality of reflecting surfaces reflect light in different directions, and the plurality of reflecting surfaces are configured to receive projection light of the projection lens module and reflect the received projection light to different positions to form a plurality of projection images. The present invention solves the problems in the prior art of split-screen projection devices having a complex structure and a poor imaging quality.
Owner:CHENGDU XGIMI TECH CO LTD

Image display apparatus and method

A technology capable of suitably correcting a geometric distortion caused by a shape of a curved surface of a screen or the like and obtaining a suitable image easily viewable for a user is provided. A projector is an image display apparatus configured to project an image onto a screen and includes a projection lens arranged at a first position and a camera arranged at a second position. When the screen has a curved surface, a camera image obtained by capturing a first image projected on the screen by the camera is acquired, and a geometric transformation for correcting a geometric distortion caused by the curved surface seen from a first virtual viewpoint position (virtual viewpoint) is performed for an image to be displayed based on information of the camera image, the first position, and the second position, and a post-transformation image is projected onto the screen.
Owner:MAXELL LTD

Projection optical structure, projection optical mirror surface adjustment method and projection lens

This invention discloses a projection optical structure, a projection optical mirror adjustment method, and a projection lens, relating to the field of optical technology. The projection optical structure includes a light source and a first lens and a second lens arranged sequentially in the light-emitting direction of the light source. The first lens includes a first light-incident surface facing the light source, a first light-emitting surface facing the second lens, and a side surface located between the first light-incident surface and the first light-emitting surface. The second lens includes a second light-incident surface facing the first lens and a second light-emitting surface facing away from the first lens. A first stray ray emitted from the light source passes sequentially through the first light-incident surface, the side surface, the first light-emitting surface, the second light-incident surface, and the second light-emitting surface to form a first image point in the second lens. A second stray ray emitted from the light source passes sequentially through the first light-incident surface, the side surface, the first light-emitting surface, the second light-incident surface, and the second light-emitting surface to form a second image point at the bottom of the first image point.
Owner:XIAN TCL SOFTWARE DEV

An ultra-high-definition resolution projection lens

The application discloses a kind of super-high-definition resolution projection lenses, projection lens successively includes the first lens of positive refractive power from object side to image side, the second lens of negative refractive power, the third lens of negative refractive power, the fourth lens of positive refractive power, the fifth lens of positive refractive power, the sixth lens of positive refractive power, the seventh lens of negative refractive power, the eighth lens of positive refractive power and the ninth lens of positive refractive power, diaphragm is arranged on the surface of fifth lens near object side, third lens and fourth lens form first double cemented lens group, sixth lens and seventh lens form second double cemented lens group.The application provides the projection lens that can realize super-high-definition resolution, can reduce imaging chromatic aberration, can be widely applied in projection lens technical field.
Owner:TIANHUO SONGLIN OPTICAL GUANGZHOU CO LTD

Projection lens automatic assembling machine

The invention provides an automatic assembling machine for a projection lens, and relates to the technical field of optical lens equipment.The automatic assembling machine comprises an assembling module, a lens feeding module, a lens taking and placing module, a film feeding module, an ejection module, a film taking and placing module and a positioning module which are arranged on a workbench. According to the lens and film assembling device, the integrated full-process operation from feeding, taking, placing, positioning to final assembling of the lens and the film is achieved, all the modules are tightly matched, manual intervention can be reduced, positioning deviation caused by manual installation or semi-automatic carrying in the traditional technology is avoided, and therefore the assembling precision is improved.
Owner:SHENZHEN ZHIHONG AUTOMATION TECH CO LTD