25results about How to "Improve aberration" patented technology

The embodiment of the invention provides an optical module and a near-to-eye display device. The optical module comprises a waveguide substrate, a coupling-in grating, a first collimating element, a second collimating element and a coupling-out grating. The coupling-in grating is arranged on one side of the waveguide substrate. The first collimating element is arranged on the side, away from the coupling-in grating, of the waveguide substrate or the side, away from the waveguide substrate, of the coupling-in grating. The second collimating element is arranged on the side, away from the waveguide substrate, of the first collimating element. The coupling-out grating is arranged on the waveguide substrate. A light beam can penetrate through the waveguide substrate and is transmitted to the first collimating element, the light beam emitted from the first collimating element is reflected by the second collimating element, and the light beam emitted from the second collimating element is transmitted to the first collimating element, is coupled into the waveguide substrate through the coupling-in grating, is transmitted in the waveguide substrate, and is coupled out through the coupling-out grating. The first collimating element and the second collimating element are used for collimating the light beam. According to the technical scheme, the size of the near-to-eye display equipment is reduced.

The invention provides an optical lens and electronic equipment. The optical lens sequentially comprises, from a first side to a second side, a first lens with positive focal power, a second lens with negative focal power and a third lens with positive focal power, the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a concave surface; the third lens has positive focal power, and the second side surface of the third lens is a convex surface; the fourth lens has focal power, and the first side surface of the fourth lens is a convex surface; the fifth lens has focal power; and the sixth lens has negative focal power. According to the invention, the problems of high resolution, miniaturization, long back focal length, small CRA, low sensitivity and high light flux of an optical lens in the prior art are solved.

The large-aperture vehicle-mounted optical system is mainly composed of six lenses, the object plane side of the first lens is a convex surface, the image plane side of the first lens is a concave surface, and the focal power of the first lens is negative; the object plane side of the second lens is a convex surface or a concave surface, the image plane side is a concave surface, and the focal power is negative; the third lens has focal power; the fourth lens has focal power; the object plane side of the fifth lens is a convex surface or a concave surface, the image plane side is a concave surface, and the focal power is negative; the object plane side and the image plane side of the sixth lens are convex surfaces, and the focal power of the sixth lens is positive; the number of the lenses is reasonable, the structure is simple, the imaging quality of an optical system is improved by reasonably distributing the focal power of the lenses and optimizing the aberration of the lens, the characteristics of ultra-wide angle, large aperture and excellent temperature characteristic are considered, and the lens has huge potential in the market.

The invention provides an optical lens and electronic equipment with the same, and the optical lens comprises a first lens which has positive focal power, the first side surface of the first lens is a convex surface, and the second side surface of the first lens is a concave surface; the second lens has negative focal power, and the first side face of the second lens and the second side face of the second lens are both concave faces; the third lens has positive focal power, and the first side surface of the third lens and the second side surface of the third lens are convex surfaces; the fourth lens has positive focal power, and at least one of the first side surface of the fourth lens and the second side surface of the fourth lens is a convex surface; and the fifth lens has focal power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a concave surface. According to the invention, at least one problem of difficulty in miniaturization of an optical lens, poor imaging quality in a dark environment, poor resolution, serious ghost image, and incapability of giving consideration to low cost and stability in the prior art is solved.

The utility model relates to optical imaging technical field discloses a variable aperture lens structure, including front lens group, rear lens group and the diaphragm adjusting assembly of setting between front lens group and rear lens group, diaphragm adjusting assembly includes carrier assembly and two pieces of shading blade, is provided with first light hole on carrier assembly, two pieces of shading blade are along first direction and are slidably arranged in carrier assembly, two pieces of shading blade can be close to each other or away from each other, two pieces of shading blade close to each other in the first light hole inner circumference form second light hole, two shading blades can be stopped in the outer circumference of first light hole away from each other, preliminary convergence light, correction aberration through front lens group, fine imaging, eliminate residual effect through rear lens group, through two pieces of shading blade along first direction and be slidably arranged in carrier assembly, with adjusting the size of diaphragm, be applicable to different shooting scene, not only simple structure, but also avoid the stagnation.

The invention provides a multi-reflection ultra-short-focus projection optical system. The multi-reflection ultra-short-focus projection optical system comprises an image generation unit sensor, a projection optical assembly and a projection screen, the projection optical assembly comprises a refraction lens group, a reflecting mirror A and a reflecting mirror B. The refraction lens group firstly amplifies an image on the sensor and meanwhile is responsible for controlling the overall imaging quality, then a light path is folded and reversed through the reflecting mirror A and the reflecting mirror B, the view field is further expanded, a large-size image is projected in a short distance, meanwhile, the projection direction can be kept parallel to the optical axis direction, and the projection effect is improved. The system has the advantages of large field angle, good imaging effect and high projection image quality. The two reflectors are added to compress and fold a light path, so that the projection direction is the same as the optical axis direction, the installation position is more flexible, the reflectors can well correct distortion and aberration, meanwhile, due to folding of the light path, the structure is more compact, the machining and assembling difficulty is moderate, and the cost is low. And the requirements of miniaturization and portability can be met.

The invention provides a wide-angle optical lens which can solve the problems that an existing wide-angle optical lens is small in target surface and difficult to have a large view field and low distortion at the same time. The lens comprises a first meniscus positive lens, a first meniscus negative lens, a second meniscus negative lens, a plano-concave lens, a third meniscus negative lens, a first biconvex positive lens, a second meniscus positive lens, a biconcave negative lens and a second biconvex positive lens which are sequentially arranged from an object plane to an image plane along the propagation direction of incident light, the focal length of the first positive meniscus lens is f1, the focal length of the first negative meniscus lens is f2, the focal length of the second negative meniscus lens is f3, the focal length of the plano-concave lens is f4, the focal length of the third negative meniscus lens is f5, the focal length of the first biconvex positive lens is f6, the focal length of the second positive meniscus lens is f7, and the focal length of the biconcave negative lens is f8. The focal length f9 of the second biconvex positive lens and the focal length f of the integral structure formed by the nine lenses meet the following relations: 2.60 lt; f1 / flt; 3.60,-1.20 [mu] m; f2 / flt; 1.00 [mu] m, 1.00 [mu] m; f3 / flt; -0.80,-1.80 [mu] m,-0.80 [mu] F4 / flt; 2.50,-0.4 lt, 2.50,-0.4 lt; f5 / flt; 0.2, 0.2 lt, 0.2 lt; f6 / flt; 0, 0.4, 0.70 lt; f7 / flt; 0.90,-0.90 < lt >,-0.90 < lt >; f8 / flt; 0.60, 1.00 lt, 0.60, 1.00 lt; f9 / flt; 1.20, 1.20.

The application provides a large-aperture infrared confocal optical system and an application camera module thereof, which mainly comprises nine lenses, the first lens has a convex object surface, a concave image surface and a negative optical power, the second lens has a concave object surface, a convex image surface and a negative optical power, the third lens has a convex object surface, a concave image surface and a positive optical power, the fourth lens has a convex object surface and a convex image surface and a positive optical power, the fifth lens has a convex object surface, a concave image surface and a negative optical power, the sixth lens has a convex object surface and a convex image surface and a positive optical power, the seventh lens has a convex object surface and a convex image surface and a positive optical power, the eighth lens has a concave object surface, a convex image surface and a negative optical power, and the ninth lens has a convex object surface, a concave image surface and an optical power, the number of lenses is reasonable, the structure is simple, the optical power of the lenses is reasonably distributed, the lens aberration is optimized, the imaging quality of the optical system is improved, the characteristics of super wide angle, high illumination, day and night confocal and excellent temperature characteristics are considered, and the optical system has great potential in the IPC market.

The application provides an optical imaging lens, which comprises, in sequence from the object side to the image side of the optical imaging lens: a first lens with positive refractive power; a second lens with negative refractive power; a third lens with positive refractive power, the object side surface of the third lens being a convex surface, and the image side surface of the third lens being a concave surface; and a fourth lens with positive refractive power, the object side surface of the fourth lens being a convex surface, and the image side surface of the fourth lens being a concave surface; wherein the following conditions are met: 0 < (R5+R6) / f3 < 6, where R5 is the curvature radius of the object side surface of the third lens, R6 is the curvature radius of the image side surface of the third lens, and f3 is the effective focal length of the third lens; V4 / V3 > 1, where V4 is the Abbe number of the fourth lens, and V3 is the Abbe number of the third lens; and 3

The invention provides a vehicle-mounted optical system and a camera module applied to the vehicle-mounted optical system, the vehicle-mounted optical system is mainly composed of six lenses, the object plane side of the first lens is a convex surface, the image plane side is a concave surface, the focal power is negative, the object plane side of the second lens is a convex surface or a concave surface, the image plane side is a concave surface, the focal power is negative, the object plane side of the third lens is a convex surface or a concave surface, the image plane side is a concave surface, and the focal power is negative. The object plane side and the image plane side of the fourth lens are convex surfaces, the focal power of the fourth lens is positive, the object plane side and the image plane side of the fifth lens are convex surfaces, the focal power of the fifth lens is positive, the object plane side of the sixth lens is concave surfaces, the image plane side of the sixth lens is convex surfaces, and the focal power of the sixth lens is negative. The ultra-wide-angle high-definition optical system is simple in structure, the imaging quality of the optical system is improved by reasonably distributing the focal power of the lenses and optimizing the aberration of the lens, the ultra-wide-angle high-definition optical system has the characteristics of ultra-wide-angle, high-definition resolution and excellent temperature characteristic, and the ultra-wide-angle high-definition optical system has huge potential in the market.

The invention provides a virtual reality system. The virtual reality system comprises a first optical system and a second optical system, the first optical system comprises a first optical lens group, a second optical lens group and a third optical lens group, and the second optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; when the following conditions are satisfied: f2'gt; f ', the axial distance TD' from the first side surface of the first lens of the first optical system to the second side surface of the last lens, the air interval T12'of the first lens and the second lens of the first optical system on the first optical axis, and the air interval T23 'of the second lens and the third lens of the first optical system on the first optical axis satisfy: 7lt; tD ' / (T12' + T23 ') lt; 12, the effective focal length f1'of the first optical lens group of the first optical system and the effective focal length f1 of the first lens of the second optical system meet the following conditions:-44lt; f1 ' / f1lt; and-26. The problems that in the prior art, a virtual reality system is large in size, and the field angle of a perspective system is small are solved.

The invention provides a vehicle-mounted ADAS lens and a vehicle, and is based on the technical field of vehicle-mounted lenses, the vehicle-mounted ADAS lens is provided with an object side and an image side which are oppositely arranged along the direction of an optical axis, and the vehicle-mounted ADAS lens comprises a first lens group with positive focal power, a second lens group with positive focal power, a third lens group with positive focal power, a fourth lens group with positive focal power, a fifth lens group with positive focal power and a sixth lens group with negative focal power, which are sequentially arranged from the object side to the image side, all lenses in the first lens group and the second lens group are glass spherical lenses, the focal length of the first lens group is f11, the focal length of the second lens group is f22, the focal length of the vehicle-mounted ADAS lens is f, f11 / f is larger than 1.5 and smaller than 2.5, f22 / f is larger than 3 and smaller than 6.5, so that the field angle of the vehicle-mounted ADAS lens reaches 130 degrees or above, the F value of the number of apertures reaches 1.8, and the F value of the number of apertures reaches 1.8. And the resolution reaches three million pixels. According to the technical scheme provided by the invention, the focal power of each lens group and the material of the lens are reasonably set, so that the vehicle-mounted ADAS lens which is large in viewing angle, large in aperture, high in image quality and capable of clearly imaging in a weak light environment is realized.

The invention discloses an optical system. The optical system comprises a reflective polarizing element, a quarter-wave plate, a first lens, a second lens, a third lens and a display, the first lens to the third lens are sequentially arranged from the outer side to the inner side along the optical axis. The reflective polarizing element and the quarter-wave plate are arranged on the outer side of the first lens; each of the first to third lenses has at least one outer side surface away from the display and one inner side surface close to the display; the outer side surface or the inner side surface of at least one lens among the first to third lenses is provided with a partial reflection layer; wherein the curvature radius R5 of the outer side surface of the third lens and the curvature radius R4 of the inner side surface of the second lens satisfy 0 lt; r4 / R5. By controlling the ratio of the outer side curvature radius of the third lens to the inner side curvature radius of the second lens, on one hand, the height of light can be effectively controlled, and therefore the display size is reduced; on the other hand, the focal power of the system is reasonably distributed, and the aberration of the system can be improved.

The invention provides an ultra-short-focus projection lens and projection equipment, and belongs to the technical field of optical imaging. The ultra-short-focus projection lens comprises a first lens with positive focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with negative focal power, a sixth lens with positive focal power, a seventh lens with negative focal power, an eighth lens with positive focal power and a ninth lens with negative focal power. The system comprises a tenth lens with negative focal power, an eleventh lens with positive focal power, a twelfth lens with positive focal power, a thirteenth lens with positive focal power, a fourteenth lens with negative focal power, a fifteenth lens with negative focal power, a sixteenth lens with negative focal power and a concave reflector, therefore, the total optical length of the ultra-short-focus projection lens is controlled within 300mm, and the definition reaches 8K and above. According to the scheme, the ultra-short-focus projection lens which is small in size, high in resolution and good in athermalization is realized.

The utility model provides an optical imaging lens. The optical imaging lens comprises a prism and eight lenses with focal power, and the image side surface of the eighth lens is provided with at least one inflection point; the following conditions are satisfied: 2.9 lt; and TTL / Imgh * FNOlt is carried out; 6.4); the requirement of-10.0 lt is met; f1 / f2lt; -0.9;-0.9; the effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens meet the following formula:-0.6 lt; f4 / f5lt; 0.2 part; the effective focal length f of the optical imaging lens and the effective focal length f3 of the third lens meet the following condition: 0.8 lt; f3 / flt; 1.5 parts; the distance P from the incident plane of the prism to the emergent plane of the prism on the optical axis meets Pgt; and the thickness is 7.0 mm. The optical imaging lens solves the problem that an optical imaging lens in the prior art is difficult to give consideration to large image surface and light weight at the same time.

The invention provides a low-distortion, small-size and high-pixel optical system and a camera module applying the same, the low-distortion, small-size and high-pixel optical system is mainly composed of seven lenses, the first lens has negative focal power, and the image side surface of the first lens is a concave surface; the second lens has positive focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; the third lens has focal power; the fourth lens has focal power; the fifth lens has positive focal power, and the image side surface of the fifth lens is a convex surface; the sixth lens has positive focal power, the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a convex surface; the seventh lens has negative focal power, and the object side surface of the seventh lens is a concave surface; the number of the lenses is reasonable, the structure is simple, the imaging quality of the optical system is improved by reasonably distributing the focal power of the lenses and optimizing the aberration of the lens, the optical system has the advantages of low distortion, small size, large aperture and high pixel, and meanwhile, the configuration of the large aperture can increase the light incoming amount of the optical system and improve the imaging quality.

The invention relates to the technical field of optical imaging, and discloses a long-focus large-zoom projection optical system and projection equipment. The optical system is sequentially provided with eleven lenses from the object side to the image side, wherein the eleven lenses are coaxially arranged and sequentially comprise the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens and the eleventh lens from the object side to the image side. An aperture diaphragm is arranged between the sixth lens and the seventh lens; the focal powers of the lenses from the object side to the image side are negative, negative, negative, positive, positive, positive, positive, negative, positive, positive and positive in sequence; the first lens and the second lens are plastic aspheric lenses, the eleventh lens is a glass aspheric lens, the rest lenses are spherical lenses, the third lens and the fourth lens are connected in a gluing mode, and the seventh lens, the eighth lens and the ninth lens are connected in a gluing mode. According to the invention, the focal power of each lens is set, and the range of the focal power is ensured to be large, so that a large focal length variation range is achieved, and the larger the focal length range is, the higher the zoom ratio is.

The application provides a low-distortion high-pixel optical system and an applied camera module, which are mainly composed of eight lenses, wherein the first lens has a convex object plane, a concave image plane and negative optical power; the second lens has a convex object plane, a concave image plane and negative optical power; the third lens has a concave object plane, a convex image plane and positive optical power; the fourth lens has a convex object plane and positive optical power; the fifth lens has a convex object plane, a convex image plane and positive optical power; the sixth lens has a concave object plane, a concave image plane and negative optical power; the seventh lens has a convex image plane and positive optical power; and the eighth lens has a convex object plane, a concave image plane and negative optical power. The application has reasonable lens number, simple structure, optimized lens aberration, improved resolution performance, wide angle, small distortion and high resolution, and is applied to a video conference equipment in a video transmission technology, so that image noise can be reduced, good imaging quality can be realized, and post-processing algorithm is facilitated.

The utility model provides a long-focus projection optical system and projection equipment, and belongs to the technical field of optical imaging. The long-focus projection optical system comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with negative focal power, a sixth lens with positive focal power, a seventh lens with negative focal power and an eighth lens with positive focal power. The long-focus projection optical system comprises a first lens with a positive focal power, a second lens with a positive focal power, a third lens with a positive focal power, a ninth lens with a positive focal power, a tenth lens with a positive focal power and a light valve, so that the total optical length of the long-focus projection optical system is controlled within 76.85 mm, the definition reaches more than 1080P, and the aperture value is 2.0-2.6; wherein the first lens is a plastic aspheric lens, and the other lenses are spherical lenses. According to the scheme, the ten lenses are adopted, and the focal power and the shape matching relation of the lenses are reasonably set, so that the long-focus projection optical system which is small in size, high in resolution, low in cost, small in projection ratio and free of virtual focus at high temperature is realized.

This application provides a lens module and an electronic device. The lens module includes an imaging lens group, a light filter, and an image sensor, the imaging lens group includes a plurality of lenses whose optical axes mutually overlap, the plurality of lenses include a liquid lens, a plastic lens, and a functional optical element, the functional optical element is a functional lens and / or a diffractive optical element, and a refractive index temperature coefficient β of the functional lens meets: -9:optical-5≤β≤9×10-5. According to the lens module and the electronic device provided in embodiments of this application, the functional optical element is disposed in the imaging lens group including the liquid lens, so that a temperature effect problem of a lens module including a liquid lens in the conventional technology can be resolved.

The utility model discloses a spatial filter lens adjusting rack, and relates to the technical field of precision machinery design. The device comprises a rectangular bottom plate, wherein a fixing mechanism, a transmission mechanism and an adjusting mechanism are arranged on the rectangular bottom plate; the fixing mechanism comprises a fixing assembly, a sliding assembly and a transmission assembly, the fixing assembly comprises a supporting plate arranged on the rectangular bottom plate, two lens installers are fixedly installed on the supporting plate, annular grooves are formed in the front faces of the two lens installers, and a plurality of springs are fixedly installed in the two annular grooves. According to the utility model, through the arrangement of the fixing mechanism, the problems that the overall performance of an optical system is poor, actual requirements cannot be met, and the application range and flexibility of the optical system are limited due to the fact that the distance between the lenses cannot be effectively adjusted are solved.

The application discloses a projection lens, comprising a first lens group, an aperture and a second lens group arranged in sequence from the magnifying side to the reducing side, the first lens group comprises a first lens with negative diopter, a second lens with negative diopter and a third lens with positive diopter arranged in sequence from the magnifying side to the reducing side, and the second lens group comprises a fourth lens with positive diopter, a fifth lens with negative diopter, a sixth lens with positive diopter, a seventh lens with negative diopter, an eighth lens with positive diopter and a ninth lens with positive diopter arranged in sequence from the magnifying side to the reducing side. The application optimizes the number of lenses, the surface shape of each lens and the optical parameters of the lens, has simple structure, less lenses, reduces the occupied volume, meets the demand of miniaturization development, effectively improves the aberration of the system and suppresses the occurrence of system distortion, and improves the MTF performance.

The present invention relates to an optical system, a camera module and an electronic device. The optical system comprises a first lens with positive refractive power, whose object side surface is convex at the near optical axis and whose image side surface is concave at the near optical axis; a second lens with negative refractive power, whose object side surface is convex at the near optical axis and whose image side surface is concave at the near optical axis; a third lens, whose image side surface is convex at the near optical axis; a fourth lens, whose image side surface is concave at the near optical axis; a fifth lens, whose object side surface is concave at the near optical axis and whose image side surface is convex at the near optical axis; a sixth lens, whose image side surface is convex at the near optical axis; a seventh lens, whose object side surface is convex at the near optical axis and whose image side surface is concave at the near optical axis; an eighth lens with negative refractive power, whose image side surface is concave at the near optical axis; and the system satisfies 1.2<TTL / ImgH<1.3. The above optical system can realize miniaturized design and maintain good imaging quality.

This invention provides a low-distortion, small-volume, high-pixel optical system and its application in a camera module, mainly composed of seven lenses. The first lens has negative optical power and its image-side surface is concave; the second lens has positive optical power and its object-side surface is convex, as is its image-side surface; the third lens has optical power; the fourth lens has optical power; the fifth lens has positive optical power and its image-side surface is convex; the sixth lens has positive optical power and its object-side surface is convex, as is its image-side surface; and the seventh lens has negative optical power and its object-side surface is concave. The system features a reasonable number of lenses and a simple structure. By rationally allocating the optical power of the lenses, lens aberrations are optimized, improving the imaging quality of the optical system. It offers advantages such as low distortion, small size, large aperture, and high pixel count. Furthermore, the large aperture configuration increases the amount of light entering the optical system and provides even higher imaging quality.

The utility model provides a long-focus projection optical system and projection equipment, and belongs to the technical field of optical imaging. The long-focus projection optical system comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with negative focal power, a sixth lens with positive focal power, a seventh lens with negative focal power and an eighth lens with positive focal power. The long-focus projection optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a ninth lens, a tenth lens and a light valve, the focal power of the ninth lens is negative, the focal power of the tenth lens is positive, so that the total optical length of the long-focus projection optical system is controlled within 76.85 mm, the definition reaches more than 1080P, and the aperture value is 2.0-2.6; wherein the first lens and the second lens are plastic aspheric lenses, and the other lenses are spherical lenses. According to the scheme, the ten lenses are adopted, and the focal power and the shape matching relation of the lenses are reasonably set, so that the long-focus projection optical system which is small in size, high in resolution, low in cost, small in projection ratio and free of virtual focus at high temperature is achieved.