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48results about How to "Refractive power of becomes strong" patented technology
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Imaging lens
An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The first lens has a surface thereof on the object side having a positive curvature radius. The second lens has surfaces on the object side and the image plane side having positive curvature radii. The third lens has a surface on the object side having a positive curvature radius and a surface on the image plane side having a negative curvature radius. The fifth lens is formed has an aspheric shape surface on the object side. The sixth lens has an aspheric shape surface on the image plane side. The first to fourth lenses have refractive power weaker than that of the fifth and sixth lenses.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS20130314804A1Refractive power of becomes strongCorrected satisfactorilyOptical elementsImaging lensImage plane
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The first lens is formed so that a surface thereof on the object side has a positive curvature radius. The second lens is formed so that a surface thereof on the image plane side has a positive curvature radius. The fifth lens is formed so that a surface thereof on the object side and a surface thereof on the image plane side have negative curvature radii. Each of the third lens, the fourth lens, the fifth lens, and the sixth lens has refractive power weaker than that of each of the first lens and the second lens.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS20110249347A1Degradation worsensSet the refractive power of the first lens relatively strongLensConditional expressionImaging lens
An imaging lens includes an aperture stop, a positive first lens with a biconvex shape, a negative second lens; a negative third lens, a positive fourth lens, and a negative fifth lens arranged in this order from an object side. When the whole lens system has a focal length f, focal lengths and Abbe's numbers of the first and the second lenses are f1, νd1, f2, and νd2, focal lengths of the fourth and fifth lenses are f4 and f5, a composite focal length of the first lens L1 and the second lens L2 is f12, and a distance from a surface of the first lens L1 on the object side to a surface of the fifth lens L5 on the image side is Σd, the imaging lens satisfies the following conditional expressions:0.7<f12 / f<1.40.2<|f1 / f2|<0.615<νd1−νd20.4<f4 / f<1.0Σd / f<1.2|f5 / f|<1.0
Owner:KANTATSU CO LTD
Imaging lens
ActiveUS20130003195A1Easy to produceSatisfactory imaging performanceOptical elementsOptical axisConditional expression
An imaging lens includes a positive first lens; a negative second lens with a meniscus lens shape directing a convex surface thereof to an object side near an optical axis; a positive third lens; a negative fourth lens with a meniscus lens shape directing a concave surface thereof to the object side near the optical axis; a negative fifth lens with a meniscus lens shape directing a convex surface thereof to the object side near the optical axis, arranged in this order from the object side. The imaging lens satisfies the following conditional expressions when the first lens has a focal length f1, the second lens has a focal length f2, the third lens has a focal length f3, the fourth lens has a focal length f4, and the fifth lens has a focal length f5: f1<f3and|f2|<f3f3<|f4|and|f2|<|f5|
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
An imaging lens includes a first lens group having positive refractive power and a second lens group having negative refractive power, arranged in this order from an object side to an image plane side. The first lens group includes a first lens having positive refractive power, a second lens having positive refractive power, and a third lens having negative refractive power. The second lens group includes a fourth lens having positive refractive power, a fifth lens, and a sixth lens having negative refractive power. The first lens and second lens have specific focal lengths. The first to third lenses have specific Abbe's numbers.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS20130057973A1Reduce manufacturing costImprove productivityOptical elementsImaging lensImage plane
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth and a fifth lens having negative refractive power. The first lens is formed so that a curvature radius of an object-side surface is positive and the second lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are positive. The third lens is formed so that a curvature radius of an object-side surface is positive, and the fifth lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are both positive. An Abbe's number from the first and the third to the fifth lens is greater than 45, and an Abbe's number of the second lens is less than 35.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS8411376B2Degradation worsensSet the refractive power of the first lens relatively strongLensConditional expressionImaging lens
An imaging lens includes an aperture stop, a positive first lens with a biconvex shape, a negative second lens; a negative third lens, a positive fourth lens, and a negative fifth lens arranged in this order from an object side. When the whole lens system has a focal length f, focal lengths and Abbe's numbers of the first and the second lenses are f1, &ngr;d1, f2, and &ngr;d2, focal lengths of the fourth and fifth lenses are f4 and f5, a composite focal length of the first lens L1 and the second lens L2 is f12, and a distance from a surface of the first lens L1 on the object side to a surface of the fifth lens L5 on the image side is &Sgr;d, the imaging lens satisfies the following conditional expressions: 0.7<f12 / f<1.4 0.2<|f1 / f2|<0.6 15<&ngr;d1−&ngr;d2 0.4<f4 / f<1.0 &Sgr;d / f<1.2 |f5 / f|<1.0
Owner:KANTATSU CO LTD
Optical imaging lens system, image capturing unit and electronic device
ActiveUS20180284394A1Small field of viewRefractive power of becomes strongTelevision system detailsColor television detailsImaging lensPhysics
An optical imaging lens system includes five lens elements which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The third lens element has positive refractive power. The fourth lens element has negative refractive power. The fifth lens element with negative refractive power can have an object-side surface being concave in a paraxial region thereof.
Owner:LARGAN PRECISION
Imaging lens
ActiveUS8988793B2Compress the total optical lengthRefractive power is weakOptical elementsOptical axisConditional expression
An imaging lens includes a positive first lens; a negative second lens with a meniscus lens shape directing a convex surface thereof to an object side near an optical axis; a positive third lens; a negative fourth lens with a meniscus lens shape directing a concave surface thereof to the object side near the optical axis; a negative fifth lens with a meniscus lens shape directing a convex surface thereof to the object side near the optical axis, arranged in this order from the object side. The imaging lens satisfies the following conditional expressions when the first lens has a focal length f1, the second lens has a focal length f2, the third lens has a focal length f3, the fourth lens has a focal length f4, and the fifth lens has a focal length f5: f1<f3and|f2|<f3f3<|f4|and|f2|<|f5|.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS20150029603A1Small sizeRefractive power of becomes strongOptical elementsConditional expressionImaging lens
An imaging lens includes a first lens having positive refractive power; a second lens having positive refractive power; and a third lens having positive refractive power, arranged in the order from an object side to an image plane side. The first lens and the third lens have object-side surfaces and image plane-side surfaces, curvature radii of which are both positive. When the first lens has refractive power P1, the second lens has refractive power P2, the third lens has refractive power P3, the first lens has a focal length f1, and the third lens has a focal length f3, the imaging lens satisfies the following conditional expressions: 5.0<(P1+P3) / P2<8.5 6<f3 / f1<30
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS9448387B2Refractive power of becomes strongAvoid chromatic aberrationLensImaging lensImage plane
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens and imaging device
ActiveUS20130222927A1Restrain incident angleShorten the axial lengthLensConditional expressionImaging lens
An imaging lens includes a first lens; a second lens; and a third lens arranged from an object side to an image plane side. The first lens has an object-side surface having a positive curvature radius R1f and an image plane-side surface having a negative curvature radius R1r. The second lens has an object-side surface and an image plane-side surface with negative curvature radii. The third lens has an object-side surface and an image plane-side surface with positive curvature radii and formed as aspheric surfaces having inflexion points. When the whole lens system has a focal length f, the first lens has a focal length f1, the second lens has a focal length f2, and the third lens has a focal length f3, the imaging lens satisfies the following conditional expressions:f1<f2<f31.0<f1 / f<1.5−0.02<R1f / R1r<0
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS8861095B2Refractive power of becomes strongCorrected satisfactorilyLensCamera lensImaging lens
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having negative refractive power; a fourth lens having negative refractive power; a fifth lens; a sixth lens; a seventh lens; an eighth lens; and a ninth lens having negative refractive power, arranged in this order from an object side to an image plane side. The ninth lens is formed in a shape so that a surface thereof on the image plane side has an aspherical shape having an inflection point.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS20150029602A1Avoid chromatic aberrationRefractive power of becomes strongOptical elementsConditional expressionImaging lens
An imaging lens includes a first lens having positive refractive power; a second lens having positive refractive power; and a third lens having negative refractive power, arranged in the order from an object side to an image plane side. The first lens and the third lens respectively have an object-side surface and an image plane-side surface whose curvature radii are both positive. The second lens has an image plane-side surface whose a curvature radius is negative. In addition, when the first lens has refractive power P1, the second lens has refractive power P2, the third lens has refractive power P3, the curvature radius of the image plane-side surface of the second lens is R2r, and the curvature radius of the object-side surface of the third lens is R3f, the imaging lens satisfies specific conditional expressions.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
InactiveUS20150370047A1Reduce manufacturing costImprove productivityLensConditional expressionImaging lens
An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; and a fifth lens having negative refractive power, arranged in this order from an object side to an image plane side. The first lens is formed in a shape so that an object side surface thereof has a positive curvature radius. The second lens is formed in a shape so that an object side surface thereof and an image plane side surface thereof have positive curvature radii. The first lens, the third lens, and the second lens have specific Abbe's numbers. The third lens has a specific focal length so that a specific conditional expression is satisfied. The second lens, the third lens, and the fourth lens are arranged so that a specific conditional expression is satisfied.
Owner:OPTICAL LOGIC +1
Imaging lens and imaging device
ActiveUS20130222675A1Avoid Sensitivity DeteriorationStable image-forming performanceTelevision system detailsColor television detailsPhysicsConditional expression
An imaging lens includes a first lens; a second lens; and a third lens arranged from an object side to an image plane side. The first lens has an object-side surface with a positive curvature radius. The second lens has an object-side surface and an image plane-side surface with negative curvature radii. The third lens has an object-side surface and an image plane-side surface with positive curvature radii. The object-side surface and the image plane-side surface of the third lens are respectively formed as an aspheric shape having an inflexion point. When the whole lens system has a focal length f, the first lens has a focal length f1, the second lens has a focal length f2, and the third lens has a focal length f3, the imaging lens satisfies the following conditional expressions:f1<f21.0<f1 / f<1.50.7<f2 / f3<1.2
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS20160011402A1Refractive power of becomes strongPositive refractive powerLensImaging lensImage plane
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
InactiveUS8416510B2Enhance the imageRefractive power of becomes strongTelevision system detailsColor television detailsCamera lensImaging lens
An imaging lens includes a first lens group having a first lens that directs a concave surface to an image plane side and is negative; a second lens group having a second lens that directs a concave surface to an object side and is positive; an aperture; a third lens group having a third lens that is positive; and a fourth lens group having a joined lens that is composed of a fourth lens that is positive and a fifth lens that is negative. In the configuration, when the whole lens system has a focal length f and a composite focal length of the first lens group to the third lens group is Fa, the imaging lens satisfies the following relation:0.3<f / Fa<1.0.
Owner:OPTICAL LOGIC
Imaging lens
ActiveUS20120194926A1MiniaturizationSatisfactory aberration correctionOptical elementsOptical axisImaging lens
An imaging lens includes a first lens L1 that has a biconvex shape near an optical axis and has positive refractive power, a second lens L2 that has a biconcave shape near the optical axis and has negative refractive power, a third lens L3 that has a shape of a meniscus lens directing a concave surface thereof to an object side near an optical axis and has positive refractive power, and a fourth lens L4 that has a biconcave shape near the optical axis and has negative refractive power, arranged in this order from the object side. When the whole lens system has a focal length f and the fourth lens L4 has a focal length f4, the imaging lens of the invention satisfies the following expression:−0.7<f4 / f<−0.1
Owner:TOKYO VISIONARY OPTICS CO LTD
Wide angle lens and imaging apparatus
ActiveUS20150286037A1Small sizeGood optical performanceOptical elementsConditional expressionRefractive index
A wide angle lens consists essentially of a front group and a rear group in this order from an object side. The front group consists essentially of two negative lenses and a positive lens in this order from the object side, and all of the three lenses are made of an identical material. The rear group includes at least one positive lens and at least one negative lens, and a lens closest to an image side in the rear group is a negative lens. When a refractive index for d-line of the material of the lenses in the front group is NF, conditional expression (1): 1.48<NF<1.6 is satisfied.
Owner:JIANGXI OFILM OPTICAL CO LTD
Imaging lens
InactiveUS20120113533A1Enhance the imageRefractive power of becomes strongTelevision system detailsColor television detailsCamera lensImaging lens
An imaging lens includes a first lens group having a first lens that directs a concave surface to an image plane side and is negative; a second lens group having a second lens that directs a concave surface to an object side and is positive; an aperture; a third lens group having a third lens that is positive; and a fourth lens group having a joined lens that is composed of a fourth lens that is positive and a fifth lens that is negative. In the configuration, when the whole lens system has a focal length f and a composite focal length of the first lens group to the third lens group is Fa, the imaging lens satisfies the following relation:0.3<f / Fa<1.0
Owner:OPTICAL LOGIC
Imaging lens
ActiveUS20180059363A1Optical performance is deterioratedSatisfactory performanceOptical elementsCamera lensOptical axis
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; a fourth lens having positive refractive power; a fifth lens; and a sixth lens having negative refractive power, arranged in this order from an object side to an image plane side. The second lens is formed in a shape so that surfaces on the both sides have positive curvature radii. The sixth lens is formed in a shape so that surfaces on the both sides have negative curvature radii. The fourth lens is arranged to be away from the fifth lens by a specific distance on an optical axis, and the imaging lens has a specific angle of view so that specific conditional expressions are satisfied.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS20140376108A1Refractive power of becomes strongCorrected satisfactorilyLensImaging lensImage plane
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. Each of the third lens, the fourth lens, the fifth lens, and the sixth lens has refractive power weaker than that of each of the first lens and the second lens.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
An imaging lens includes a first lens L1 having positive curvature radii on both an object side and an image side, a second lens L2 having a concave shape on both sides, and a third lens L3 having positive curvature radii on both the object side and the image side. The first to third lenses L1 to L3 are arranged in this order from the object side toward the image side. When the first lens L1 has a focal length f1 and the second lens L2 has a focal length f2, the imaging lens is configured such that a relationship f1>|f2| is satisfied.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth and a fifth lens having negative refractive power. The first lens is formed so that a curvature radius of an object-side surface is positive and the second lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are positive. The third lens is formed so that a curvature radius of an object-side surface is positive, and the fifth lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are both positive. An Abbe's number from the first and the third to the fifth lens is greater than 45, and an Abbe's number of the second lens is less than 35.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS10809498B2Refractive power of becomes strongSuitable for installationOptical elementsOphthalmologyOptical axis
An imaging lens includes a first lens having negative refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens; and a sixth lens having negative refractive power, arranged in this order from an object side to an image plane side. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex near an optical axis thereof.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens assembly, imaging apparatus and electronic device
An imaging lens assembly includes five lens elements, which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The fourth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, wherein the two surfaces of the fourth lens element are both aspheric. The fifth lens element having an image-side surface being concave in a paraxial region thereof, wherein two surfaces of the fifth lens element are both aspheric, and the image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.
Owner:LARGAN PRECISION
Imaging lens
PendingUS20210356702A1Refractive power of becomes strongCorrected satisfactorilyOptical elementsOphthalmologyImaging lens
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having negative refractive power; a fourth lens having negative refractive power; a fifth lens; a sixth lens; a seventh lens; an eighth lens; and a ninth lens having negative refractive power, arranged in this order from an object side to an image plane side. The ninth lens is formed in a shape so that a surface thereof on the image plane side has an aspherical shape having an inflection point.
Owner:TOKYO VISIONARY OPTICS CO LTD
Imaging lens
ActiveUS20190179119A1Suitable for installationHigh resolutionOptical elementsOptical axisImaging lens
An imaging lens includes a first lens having negative refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens; and a sixth lens having negative refractive power, arranged in this order from an object side to an image plane side. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex near an optical axis thereof.
Owner:TOKYO VISIONARY OPTICS CO LTD
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