34results about How to "Achieving Broad Spectrum Confocal" patented technology

The invention relates to an ultra-high-sensitivity medium-wave cooling infrared athermalization lens and its working method. The ultra-high-sensitivity medium-wave cooling infrared athermalization lens is characterized in that: the optical structure of the lens is along the light incident direction A negative crescent lens A, a negative crescent lens B, and a positive crescent lens C are arranged in this order. The ultra-high-sensitivity medium-wave cooling infrared athermalization lens has the advantages of wide field of view, low distortion, mechanical athermalization and athermalization compensation, and light structure; it uses the thermal expansion and contraction characteristics of mechanical materials at different temperatures to compensate The influence of temperature changes on the focal plane makes the athermal design structure simpler, the overall product structure is smaller, lighter in weight, the optical axis is stable, the image is clearer, and the reliability is high. In terms of meeting the user's requirements for product imaging performance, the structure It is also more convenient for customers to use.

The invention relates to a high-precision plastic high-definition lens. The optical system of the lens is sequentially provided with a front group A with a negative focal power and a rear group B with a positive focal power along the incident direction of light from left to right. A variable diaphragm C is arranged between the front group A and the rear group B; the front group A is the first one in which the negative crescent lens A-1, the biconcave lens A-2 and the biconvex lens A-3 are closely connected. The latter group B is composed of a second cemented group, biconvex lens B-1, a negative crescent lens B-2, a biconvex lens B-3 and a biconcave lens B-4, which are arranged in sequence. Type lens B-5 and a convex-flat lens B-6. The high-precision plastic high-definition lens can convert the trigger interface lens into a CS interface lens without affecting the imaging effect, and it is easy to install and disassemble. It uses reinforced plastic, has high strength and elastic coefficient, high impact strength, wide operating temperature range, and excellent electrical characteristics. , improve lens yield and back focus consistency.

The invention relates to an economic day and night high definition zoom lens, and a control method thereof, belonging to the lens field. The economic day and night high definition zoom lens is applied to an intelligent security video shooting system, and has the characteristics of high optical index, large optical target surface, and resolution factor no less than three megapixels. In a technical scheme, the optical system of the lens is successively provided with a front set of negative focal power, and a rear set of positive focal power along a light incident direction; a changeable diaphragm is arranged between the front set and the rear set; the front set is successively provided with a negative crescent lens, a double concave aspheric lens and a double convex lens; the rear set is successively provided with a positive crescent lens, a double convex lens, a plano-concave lens and a double convex aspheric lens. According to the invention, the focal power of the front and rear sets is reasonably distributed in a retrofocus type optical structure, allowing a whole optical structure to be insensitive; the aspheric lenses enlarge the angle of a visual field, and rectify a lens image difference, thereby meeting fine definition video shooting requirements.

The invention relates to a small-target-surface high-resolution ultra-wide field fish-eye lens. According to the lens, an optical system is provided with a front group A and a back group B of lens groups along the light incidence direction from left to right in sequence, wherein a diaphragm C is arranged between the front group A and the back group B; the group A comprises a negative crescent lens A-1, a negative crescent lens A-2, a double-concave lens A-3 and a double-convex lens A-4 which are arranged in sequence from left to right; the group B comprises a double-convex lens B-1, a gluing group which is in sealed connection with a double-convex lens B-2 and a negative crescent lens B-3, and a double-convex lens B-4. The small-target-surface high-resolution ultra-wide field fish-eye lens has the performances of full view fields, water prevention, dust prevention, scraping prevention and utilization in day and night, and can be applied to security and protection monitoring of oversized view fields, particularly lobbies of hotels, clubs and the like.

The invention relates to a high-resolution miniature lens for daytime and night. An optical system of the lens is sequentially provided with a front set A with the focal power being negative and a rear set B with the focal power being positive in the incidence direction of light. The front set A is sequentially provided with a positive crescent lens A-1, a negative crescent lens A-2 and a biconvex lens A-3. The rear set B is sequentially provided with a positive crescent lens B-1, a single concave lens B-2, a gluing set closely connected with a biconvex lens B-3 and a biconvex lens B-4. The lens can form clear images in the light environment of daytime, also can form clear images in the low-light-level environment of night through infrared light supplementation, has the advantages of being small in distortion, large in relative aperture, high in resolution, high in performance cost ratio, wide in application range and the like and can adapt to the requirement of 5-mega-pixel high-resolution video shooting, thereby being a mainstream product for home monitoring.

The invention relates to a long-wave infrared mechanically passive athermal vehicle-mounted lens and an installation method thereof. The optical system of the lens includes lens A with positive refractive power and optical focal length arranged at intervals from left to right along the incident direction of light. The rear lens group B with negative power and the lens C with positive refractive power, both the lens A and the lens C are positive crescent lenses, and the lens rear group B is a negative crescent lens; the lens A and the lens rear The air gap between group B is 5.21mm, and the air gap between the lens rear group B and C lens C is 3.78mm; the lens also includes a main lens barrel, the lens A, lens rear group B and lens C It is arranged in cooperation with the inner wall of the main lens barrel at intervals from left to right. The invention makes use of the thermal expansion and contraction properties of the material and the application of the compensation shrapnel to make the athermal design structure simpler, the overall product structure smaller, lighter in weight, and high in reliability, and to meet the user's requirements for product imaging performance , the structure is also more convenient for customers to use.

The invention relates to a high-resolution fisheye lens for day and night use. The high-resolution fisheye lens is characterized in that an optical assembly of the lens comprises a front lens group A with negative focal power and a rear lens group B with negative focal power which are arranged sequentially from left to right along the incident direction of light. The front lens group A is provided with a negative meniscus lens A-1, a plastic aspheric lens A-2 and a positive meniscus lens A-3 sequentially from left to right. The rear lens group B is provided with a plastic aspheric lens B-1 and a double-concave lens cemented group B-2 sequentially from left to right. The centers of the negative meniscus lens A-1, the plastic aspheric lens A-2, the positive meniscus lens A-3, the plastic aspheric lens B-1 and the double-concave lens cemented group B-2 are on the optical axis of light. The high-resolution fisheye lens of the invention has the advantages of compact structure, small size and low weight, and can be used both in the day and at night.

The invention relates to a high-resolution fine-tuning day and night dual-purpose fixed-focus lens. The optical system of the lens is sequentially provided with the front group A of the lens group with negative focal power and positive focal power along the incident direction of light from left to right. The rear group B of the lens group, a variable diaphragm C is arranged between the front group A and the rear group B, and the front group A includes positive meniscus lens A-1 and negative meniscus lens A-1 arranged in sequence from left to right Moon-shaped lens A-2; the rear group B includes a cemented group of double-convex lens B-1 and double-convex lens B-2 arranged in sequence from left to right, and double-convex lens B-3. The high-resolution fine-tuning day and night dual-purpose fixed-focus lens has the advantages of low distortion, large relative aperture, and high resolution, and can meet the requirements of 3 million pixel high-definition video recording to achieve wide-spectrum confocal.

The present invention relates to an electric zoom, focusing 7-22 zoom monitor lens and its control method. The lens includes a front lens base and a rear lens base. The front lens base is movably installed in the front lens barrel. The outer side of the front group lens barrel is provided with a front group fan-shaped cam that drives the front group lens base to move back and forth. The rear group lens base is movably installed in the rear group lens barrel. The rear cam that the seat moves back and forth, the front group lens barrel and the rear group lens barrel are respectively connected with the reduction box through two main body guide nails; the focus stepping motor and the zoom stepping motor are arranged in the reduction box, and the The focus gear meshed with the output gear of the focus stepping motor is integrated on the front group of sector cams, which saves a lot of manpower and material resources; the focus stepping motor and the zoom stepping motor are arranged on the same side of the reduction box, which solves the structural interference Problem; the number of steps of the two stepper motors is 3400 steps, which makes the number of steps more, the focus accuracy is high, the structure is reasonable and the production is easy.

The invention relates to a low-distortion and high-resolution infrared miniature lens. An optical system of the lens is provided with a front assembly A with negative focal power, an iris diaphragm C and a rear assembly B with positive focal power sequentially in an incidence direction from left to right along a light ray, wherein the front assembly A is provided with a positive crescent lens A-1, a negative crescent lens A-2, a negative crescent lens A-3 and a first agglutination group tightly connected with a double convex lens A-4 and a double concave lens A-5 sequentially; and the rear assembly B is provided with a double convex lens B-1, a second agglutination group tightly connected with a double convex lens B-2 and a double concave lens B-3 and a double convex lens B-4 sequentially. The lens has the advantages of compact structure, small size, light weight, low distortion, large relative aperture, high resolution, broad spectrum common focus and the like, can perform imaging clearly both in a lighting environment in the daylight and in an extremely low illumination environment at night, and can meet the requirement for shooting a fine definition video with a pixel of 8 million.

The invention relates to a high-resolution, low-distortion day and night dual-purpose fixed-focus lens. The optical system is provided with a front group A with a negative focal power, a diaphragm C with a positive focal power, and a rear group with a positive focal power in sequence along the incident direction of light. group, the front group A is sequentially provided with a negative crescent lens A-1, a negative crescent lens A-2, a biconcave lens A-3, and a negative crescent lens A-4 and a negative crescent lens A-5. The first cemented group, the rear group B is sequentially provided with a biconcave lens B-1, a second cemented group closely connected by a negative crescent lens B-2 and a negative crescent lens B-3, and a biconvex lens B-4. The lens has the advantages of high resolution, large relative aperture, day and night confocal, and low distortion. It can not only image clearly in daytime lighting environment, but also can image clearly at night with infrared supplementary light in extremely low illumination environment.

The invention relates to video devices, monitoring devices and pick-up lens devices, in particular to a four-element high-resolution day-and-night dual-purpose multipoint varifocal lens. The multipoint varifocal lens in a novel four-element structural style has the advantages of high optical zoom ratio, large focal length, large aperture, high resolution, wide light spectrum, confocal property and the like; and the multipoint varifocal lens also has the characteristic of small structural length. The light path is composed of a front fixing element (A), an optical zooming element (B), a back fixing element (D) and a compensation element (E). Since the optical zooming element (B) and the compensation element (E) correspondingly move back and forth along the optical axis, the focal length ofthe optical system can be conveniently changed. In the light path design process, the focal power of the four elements are reasonably distributed, so that the optical lens has the performance indexesof high optical zoom ratio, large focal length and large relative aperture.

The invention relates to a high-resolution day and night confocal zoom aspheric lens. The optical system of the lens is provided with the front group A of the lens group with a negative focal power and a positive focal power along the incident direction of the light from left to right. The rear group B of the lens group, a diaphragm C is arranged between the front group A and the rear group B, and the front group A includes a negative crescent lens A-1, a negative double-concave aspheric surface arranged in sequence from left to right Lens A-2, double-convex lens A-3; the rear group B includes a positive crescent aspheric lens B-1, a double-convex lens B-2, a plano-concave lens B-3, and a double-convex aspheric surface arranged in sequence from left to right Lens B-4. The high-resolution day and night confocal zoom aspheric lens achieves the function of changing the focal length of the optical system through the corresponding movement of the front group A and the rear group B along the optical axis.