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

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 of the 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 indexes of high optical zoom ratio, large focal length and large relative aperture.

The invention relates to an ultra-high sensitivity medium wave refrigeration infrared athermalization lens and a work method thereof. The ultra-high sensitivity medium wave refrigeration infrared athermalization lens is characterized in that the optical structure of the lens successively comprises a negative crescent lens A, a negative crescent lens B, and a positive crescent lens C along a light incidence direction. The ultra-high sensitivity medium wave refrigeration infrared athermalization lens has the advantages of wide field angle, low distortion, mechanical athermalization compensation, portable structure, etc., utilizes the thermal expansion and contraction characteristic of mechanical materials under different temperatures to compensate for the temperature change influence on a focal plane, allows an athermalization design structure to be simpler, a whole product structure to be smaller and lighter, and optical axis stable imaging to be clearer and more reliable, and is more convenient to use under the condition of meeting user demands on product imaging performance.

The invention relates to a high resolution day and night confocal zooming aspheric lens. The optical system of the lens is successively provided with a negative focal power lens set front set A and a positive focal power lens set rear set B from a left incidence direction to a right incidence direction along a luminous beam; a diaphragm C is arranged between the front set A and the rear set B; the front set A comprises a negative crescent shaped lens A-1, a negative double-concave aspheric lens A-2, and a double-convex lens A-3 which are successively arranged from left to right, and the rear set B comprises a negative crescent shaped aspheric lens B-1, a double-convex lens B-2, a plano-concave type lens B-3, and a double-convex aspheric lens B-4 which are successively arranged from left to right. The high resolution day and night confocal zooming aspheric lens correspondingly moves back and forth through the front set A and the rear set B, and changes the focal length of the optical system.

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 the field of optical lenses, and particularly relates to a super-distant-vision glare-interference-prevention long-wave infrared optical athermalized automotive lens. The automotive lens comprises a main lens cone and an optical system arranged in the main lens cone, wherein the optical system comprises a negative crescent lens, a positive crescent lens and a biconvex lens which are sequentially arranged along the light incidence direction from front to back; and a rear clamping ring is arranged at the rear end of the main lens cone and is used for pressing the periphery of the rear side of the biconvex lens. The automotive lens has a simple structure and has certain temperature adaptability.

The invention relates to the technical field of optical lens devices, in particular to a three-piece far infrared electric whole set focusing type uncooled lens. The three-piece far infrared electric whole set focusing type uncooled lens comprises a main lens barrel, a first lens with positive focal power, a second lens with negative focal power and a third lens with positive focal power are sequentially arranged inside the main lens barrel in the incidence direction, from front to back, of light, the main lens barrel is sleeved with a sleeve, a connecting base is arranged at the rear end of the sleeve, and a focusing mechanism for focusing is arranged between the connecting base and the sleeve. The lens is simple in structure, and the imaging property is improved conveniently.

The invention relates to a high-contrast high-resolution day and night dual-purpose electric zoom lens. An optical system of the lens is sequentially provided with a front lens group A with negative focal power and a rear lens group B with positive focal power in the light direction from the left to the right. A diaphragm C is disposed between the front lens group A and the rear lens group B. The front lens group A comprises a negative crescent lens A-1, a biconcave lens A-2 and a biconvex lens A-3 from the left to the right. The rear lens group B sequentially comprises a biconvex lens B-1, the sealed glued combination of a biconvex lens B-2 and a biconcave lens B-3, a positive crescent lens B-4 and a biconvex lens B-5 from the left to the right side. The system is simple in structure, is compact in the assembly of the lens structure, is short in length, is small in size, is portable, is high in contrast, is stable in imaging quality, and is high in resolution.

The invention relates to a high-accuracy plastic high-definition lens, wherein a front group A with a negative focal power, a variable diaphragm C and a rear group B with a positive focal power are sequentially arranged in the optical system of the lens along the left-to-right incident direction of a light ray; a variable diaphragm C is arranged between the front group A and the rear group B; the front group A composed of a negative meniscus lens A-1, and a first glued group formed by airtightly connecting a biconcave lens A-2 and a biconvex lens A-3 which are sequentially arranged; the rear group B is composed of a biconvex lens B-1, a negative meniscus lens B-2, a second glued group formed by airtightly connecting a biconvex lens B-3 and a biconcave lens B-4, a biconvex lens B-5 and a planar-convex lens B-6. The high-accuracy plastic high-definition lens is capable of converting a trigger connector lens to a CS connector lens without influence on an imaging effect, and convenient to install and detach; and by using reinforcing plastic, the high-accuracy plastic high-definition lens is high in strength and elastic coefficient, high in impact strength, wide in use temperature range, excellent in electrical characteristics, and capable of improving the yield and back focal consistency thereof.

The invention discloses a knob type infrared focusing lens with a focal length of 54 mm and an assembly method thereof. The lens comprises a main lens barrel, and a first meniscus lens and a second meniscus lens which are sequentially arranged in the main lens barrel from an object side to an image side along an optical axis; the convex surface of the first meniscus lens faces the object side, and the convex surface of the second meniscus lens faces the image side; the focal power of the first meniscus lens and the focal power of the second meniscus lens are positive; the working wave band of the infrared focusing lens is 8 [mu] m to 12 [mu] m. According to the invention, aberration correction and balance are carried out on a wide spectrum range of 8 [mu] m to 12 [mu] m, so that the lens has excellent image quality in the wide spectrum range, and wide spectrum confocal is realized; through reasonable matching of focal power and design of an aspheric surface, a knob focusing mode is adopted, high resolution, high passing rate and low distortion can be obtained only by using two lenses, and air change between the lenses at different temperatures is completed to adjust the imaging performance of an optical system; the method is suitable for the long-wave infrared detector with the pixel of 1280X1024.

The invention provides a six-million high-resolution zoom lens. The lens comprises a lens shell and an optical system in the lens shell; a front fixation group A with focal power as positive, a zooming group B with focal power as negative, a rear fixation group C with focal power as positive and a compensation group with focal power as positive are orderly arranged at the optical system along a light incident direction; and a diaphragm is arranged between the zooming group B and the rear fixation group C; and a function of changing the optical system focal distance is realized through the backand forth corresponding movement of the zooming lens B and the compensation group C along an optical axis. The focal powers of the front fixation group A, the zooming group B, the fixation group C and the compensation group C are reasonably distributed in a reversed long-distance optical structure. In the fixation group C, a second ophthalmic lens is changed as a doublet lens group; and the compensation group D performs the compensation so that the lens reaches the performance indexes of being large in relative aperture, high in multiple proportion and short in structure length.