19 results about "Athermalization" patented technology

This application discloses an imaging device with an operating temperature range of -40℃ to +60℃, comprising a 4K high-definition lens and a detector for receiving images captured by the 4K high-definition lens. The 4K high-definition lens has a focal length of 50mm, a relative aperture of 1.25, and operates in dual bands: 0.43~0.656μm and 0.7~1μm. The detector has a pixel count of 3840×2160 and a pixel size of 2.9μm. The 4K high-definition lens employs a heat-free design using domestically produced spherical glass, resulting in a simple, compact structure and small size. It utilizes a high-dispersion material lens and a low-dispersion material glass bonded together to achieve dispersion matching. The combination of different lenses and the rational allocation of optical power ensure excellent optical performance. Furthermore, it is suitable for imaging in high-brightness daytime and low-light nighttime environments and can switch bands for imaging, ensuring clear images both day and night.

The application provides a high-pixel forward-looking intelligent driving optical system and an applied camera module. The optical system is sequentially composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. Through reasonable distribution of the surface shape and the optical power of each lens, the volume of the optical system can be effectively reduced, the performance of a large target surface, a large aperture and high pixels is achieved, the optical system has the unique advantages of stable performance, high pixels, a large aperture, a large target surface, no thermalization and no ghost image, and the driving safety of the driver and passengers can be more effectively protected.

This application discloses an optical system including a short-focal-length eyepiece and a display adapted to the eyepiece. The short-focal-length eyepiece has a focal length of 13.7 mm, a field of view of 40°, a magnification of 18x, an exit pupil diameter of 8 mm, an exit pupil distance of 20 mm, an operating temperature range of -40℃ to +60℃, and an operating wavelength range of 0.48 to 0.65 μm. The display is an OLED display with a resolution of 1024×768 and a pixel size of 7.8 μm. The short-focal-length eyepiece consists of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the optical axis from the eye side to the image side. The first and second lenses are cemented together, and the fourth and fifth lenses are cemented together. This short-focal-length eyepiece can achieve clear imaging of a large target area, meets the requirements of low distortion, and adopts a non-thermal compensation method, exhibiting good imaging performance at different operating temperatures.

This application discloses an athermalized long-wavelength fixed-focus lens with an effective focal length of 4.5mm and an f-number of 1.0. The athermalized long-wavelength fixed-focus lens includes a first lens, a second lens, and a third lens arranged sequentially along the optical axis. The first lens is a meniscus negative lens with its convex surface facing the object side, the second lens is a meniscus positive lens with its convex surface facing the image side, and the third lens is a biconvex lens. All three lenses are made of chalcogenide glass. When the temperature of the athermalized long-wavelength fixed-focus lens is 20°C, the air gap between the first and second lenses is 6.45mm, and the air gap between the second and third lenses is 8.6mm. This athermalized long-wavelength fixed-focus lens has a small number of lenses, a simple and compact structure, and all lenses are made of chalcogenide glass, thus reducing costs while achieving passive athermalization. This application also discloses an imaging device.

The present application relates to a kind of wide-angle large light vehicle lens, it is related to visual lens technical field.The lens is composed of six lenses, from object side to image side along optical axis in order: the first lens with negative refractive power, the second lens with negative refractive power, the third lens with positive refractive power, the fourth lens with positive refractive power, the fifth lens with negative refractive power and the sixth lens with positive refractive power, adopt glass-plastic hybrid structure, through the combination of four plastic aspheric lenses and two spherical lenses, the wide-angle design of focal length 3mm is realized.The lens has F1.5 Large light quantity, and the relative luminance of full field of view is greater than 50%, and the optical total length is less than 22mm, and the structure is light and compact.System realizes athermal design by reasonable allocation of optical power, ensure clear imaging in-40 ℃ to +105 ℃ Environment, can be adapted to five million pixel sensor.The present application has large field of view (up to 143 °), high resolving power and strong chromatic aberration suppression.

The present disclosure relates to the technical field of optics, and particularly relates to a Schmidt lens and an electronic device. The Schmidt lens comprises eight lenses with optical power arranged in sequence from the object side to the image side along the optical axis, one positive lens and one negative lens in the eight lenses form a thermal compensation lens group, and the positive lens and the negative lens of the thermal compensation lens group satisfy at least two of the following conditions: f1 / f2>1, f1 / f3>1 and f2 / f3>1. By controlling the lens to satisfy at least two of the three conditions, the offset of the focal length of the lens when the ambient temperature changes in a wide range is reduced, further, the thermal stability of the lens is enhanced, the athermalization design of the lens is realized, and the accuracy of detection is ensured.

The utility model discloses a wide-angle athermal glass plastic hybrid lens, including first lens, second lens, third lens, fourth lens and fifth lens which are sequentially arranged from object side to image side, first lens and second lens are meniscus glass spherical lens, third lens is meniscus plastic aspheric lens, fourth lens is glass spherical lens and the image side is convex, and fifth lens is double-convex plastic aspheric lens, and the focal length ratio of each lens is reasonably set. Make the lens meet the miniaturization light weight, high imaging quality and athermalization demand while being compatible with large target surface, large aperture and large field angle.

This invention provides an optical imaging system for unmanned aerial vehicle (UAV) aerial photography. The system comprises, from the object side to the image side along the optical axis, a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with negative optical power, a fifth lens with positive optical power, a sixth lens with positive optical power, and a seventh lens with negative optical power. This design employs a single glass aspherical lens and six plastic aspherical lenses. Therefore, it provides a miniaturized, lightweight, large image area, high image quality, and heat-free optical imaging system.

The utility model discloses a kind of low-cost automobile safety auxiliary driving ADAS optical imaging lens, it is related to optical system and vehicle-mounted imaging device technical field, it is sequentially for: first lens, second lens, third lens, diaphragm, fourth lens, fifth lens, sixth lens, optical filter, protective glass and image surface from object plane to image plane along optical axis;Wherein fifth lens and sixth lens form a group of cemented lens.This utility model has adopted 6G structure design, with high cost-effective way design has reduced product cost while high-definition pixel;F / NO1.8 large aperture design, increase lens light throughput, improve lens night vision imaging quality;Adopted athermal design, realized thermal temperature drift compensation, working temperature can be from-40 ℃ to 105 ℃, ensure that the product is applied in complex temperature scene;Adopt low dispersion material design optimization purple edge, improve lens imaging picture quality.

This invention provides a wide field-of-view infrared lens, comprising a lens body, two front fixed groups disposed above the lens body, a fast-reflecting mirror group disposed within the lens body, and a relay group disposed to the right of the lens body; the relay group is horizontally positioned, the fast-reflecting mirror group is at an angle of 45° to the horizontal direction, the two front fixed groups are tilted at 20° relative to the vertical direction, and the angle between the two front fixed groups is 40°; this wide field-of-view infrared lens uses a 1280*1024@10μm mid-wave cooled detector, with a field of view ≥84.5°x54.2° and good imaging performance; the optical system has an F-number of 2.0, increasing the system's light transmission and improving sensitivity; distortion ≤1.0%; the lens is small in size and compact in structure, improving the lens assembly and adjustment accuracy; and it adopts an optical anechoic design to eliminate thermal and chromatic differences, achieving anechoicity within a temperature range of -40℃ to +70℃.

This invention provides a large-aperture, ultra-large target surface DVR optical monitoring system. The optical imaging lens, along the optical axis from the object plane to the image plane, comprises: a first lens, a second lens, a third lens, a fourth lens, an aperture stop, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a filter, a protective glass, and an image plane. This invention employs a 5G4P glass-plastic hybrid optical structure, successfully increasing the system's target surface size to match a 1 / 1.2-inch large-size chip. Simultaneously, by setting an ultra-large aperture of F1.6, the system's light transmission performance is significantly enhanced, ensuring clear recording of driving conditions even in low-light environments without streetlights. Furthermore, the lens incorporates a heat-free design, maintaining focus stability over a wide temperature range of -40℃ to 85℃; and performs in-depth chromatic aberration correction, ultimately achieving high-definition imaging quality at the 8-megapixel level.

This invention discloses a thermally cooled, large-target-area, wide-band short-wave infrared optical system, comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens arranged sequentially from the object side to the image side. The first lens is a biconvex spherical lens with positive optical power; the second lens is a biconcave double aspherical lens with negative optical power; the third lens is a biconcave spherical lens with negative optical power; the fourth lens is a biconvex single aspherical lens with positive optical power; the fifth lens is a biconvex spherical lens with positive optical power; the sixth lens is a meniscus aspherical lens with negative optical power and its convex surface curved towards the object side; the seventh lens is a biconvex single aspherical lens with positive optical power; and the eighth lens is a plano-concave aspherical lens with negative optical power. This optical system has a long applicable wavelength range, an ultra-large target-area field of view, and a large aperture, achieving a thermally cooled design from -40℃ to 80℃, and exhibits strong adaptability.

This invention relates to the field of optical lens technology, specifically disclosing a long focal length short-wave infrared imaging lens assembly. The lens, along its optical axis, sequentially comprises a first positive lens, a second positive lens, a first negative lens, an aperture stop, a third positive lens, a second negative lens, a fourth positive lens, and a filter. The first positive lens is a biconvex lens, the second positive lens is a meniscus positive lens, the first negative lens is a meniscus negative lens, the third positive lens is a meniscus positive lens, the second negative lens is a meniscus negative lens, and the fourth positive lens is a biconvex lens. This invention achieves achromatic aberration across a wide wavelength range of 900nm-1700nm through a precise combination of all ordinary glass materials. Combined with a matching design of thermal expansion coefficients, it achieves passive calorimetry over a wide temperature range of -40℃ to +60℃, while also possessing a 200mm long focal length, a large F2.0 aperture, and a compact size. It exhibits significant advantages such as high light transmission, stable imaging at high and low temperatures, low cost, and ease of mass production.

The application discloses a two-grade zooming athermalization optical imaging system, and belongs to the field of photoelectricity. The system comprises, in sequence from an object plane to an image plane along the direction of light incidence, a front fixed group with positive focal power, a variable magnification group with negative focal power, a compensation group with positive focal power, a rear fixed group with positive focal power and the image plane; wherein the variable magnification group and the compensation group can move axially along the optical axis to realize two-grade switching of focal length; the system further comprises at least one optical material with a positive refractive index temperature coefficient and at least one optical material with a negative refractive index temperature coefficient, which are used to compensate for the image plane drift caused by temperature change, and realize passive athermalization. The application can realize stable image plane position in the temperature range of-40 DEG C to 60 DEG C through passive athermalization design, and can realize efficient search, accurate identification and stable observation of a target through the same light path, and can meet the all-weather and high-reliability imaging use requirements without focusing.

This invention provides a large-area, short TTL black light drone optical system. The optical imaging lens, along the optical axis from the object plane to the image plane, includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, an aperture stop, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a filter, and an image plane. This invention employs a 1G1GM7P structure, achieving a short overall optical length while effectively matching a 1 / 1.8-inch large-area chip, effectively solving the edge vignetting problem of traditional large-angle drone lenses. The F1.0 ultra-large aperture design ensures clear imaging of ground objects in low-light environments. Through a heat-free design, it automatically compensates for thermal drift within a wide temperature range of -40℃ to 95℃, greatly improving its applicability in extreme temperature scenarios. The overall image resolution reaches 8 megapixels, enabling fine reproduction of ground object details.

The application provides an optical athermal long-wave infrared imaging system and an infrared camera. The optical athermal long-wave infrared imaging system comprises a first lens, a second lens and a third lens arranged in sequence along the same optical axis by a preset distance from an object plane to an image plane; the first lens is a meniscus lens, has opposite first concave and convex surfaces, the first concave surface is located on the side of the first lens away from the second lens, and the first convex surface is located on the side of the first lens close to the second lens; the second lens is a double-convex lens, has opposite second and third convex surfaces, the second convex surface is located on the side of the second lens close to the first lens, and the third convex surface is located on the side of the second lens close to the third lens; and the third lens is a meniscus lens, has opposite fourth convex and second concave surfaces, the fourth convex surface is located on the side of the third lens close to the second lens, and the second concave surface is located on the side of the third lens away from the second lens.

This invention proposes a mid / long-wavelength composite co-aperture cooled infrared athermal optical system, belonging to the field of optical imaging technology. It addresses the problem of mid / long-wavelength composite, co-aperture, and athermal design in a cooled infrared imaging detection system. It includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, and a twelfth lens, along with a detector protective glass, a cold aperture, and an image plane, all coaxially arranged in the direction of light propagation. It primarily receives the inherent infrared radiation from the target and background and converges it onto the photosensitive surface of the mid / long-wavelength composite cooled infrared detector. Through photoelectric conversion, the optical signal is converted into an electrical signal, achieving mid / long-wavelength composite dual-band detection. This enables reliable detection, identification, and location of targets with weak infrared signatures and high concealment, facilitating precise strikes.

The application relates to the technical field of optical imaging modules, in particular to an ultra-short large-target high-pixel motion DV optical imaging lens, which comprises, in sequence from the object side to the image side along the optical axis direction, a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a filter and an image plane. The disclosed optical imaging lens adopts an optical structure design of 1G1GM6P, realizes miniaturization of the lens, successfully adapts to a 1 / 1.5-inch chip and reaches a high resolution of 50 million pixels; meanwhile, through introduction of a non-thermal design, thermal temperature drift is effectively compensated, so that the system can still keep stable imaging in a wide temperature range of-40 DEG C to 85 DEG C; in addition, through reasonable matching of a non-spherical plastic lens and a non-spherical glass lens, purple edges and other aberrations are optimized, and the imaging quality is significantly improved under the premise of ensuring compact volume.

This invention relates to the field of optical technology and provides a short-to-mid-wave infrared broadband relay imaging system. Along the optical path, it sequentially includes a stepped micromirror, a beam splitter, a compensation plate, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a filter, a detector window, a cold stop, and a detector back focal plane. The six lenses are, respectively, a zero-power wedge plate, a positive-power cylindrical lens, a positive-power binary diffraction positive meniscus lens, a negative-power negative meniscus lens, a negative-power negative meniscus lens, and a positive-power positive meniscus lens. By combining the wedge plate and the cylindrical mirror, it eliminates large-scale astigmatism in the broadband infrared band, achieving broadband infrared chromatic aberration correction and thermal-free design. It solves the significant difference in imaging transfer functions between the meridional and sagittal directions of the lens, addresses the problem of reduced transfer function, and can meet the imaging requirements of the short-to-mid-wave infrared band under complex environmental conditions.