公开(公告)号：US20170242237A1

公开(公告)日：2017-08-24

申请号：US15589344

申请日：2017-05-08

申请人： OLYMPUS CORPORATION

发明人： Yosuke EGUCHI

IPC分类号： G02B23/24 ,  G02B13/04 ,  A61B1/00

CPC分类号： G02B23/243 ,  A61B1/00 ,  A61B1/00096 ,  A61B1/00163 ,  A61B1/00188 ,  G02B5/005 ,  G02B9/34 ,  G02B9/58 ,  G02B13/004 ,  G02B13/006 ,  G02B13/04 ,  G02B13/18 ,  G02B15/177 ,  G02B23/26

摘要： An objective optical system for endoscope includes, a first group having a positive refractive power, an aperture stop, and a second group having a positive refractive power, wherein the first group includes a first lens having a negative refractive power, and a second lens having a positive refractive power, the second group includes a cemented lens, and the cemented lens includes a third lens having a positive refractive power and a fourth lens having a negative refractive power, and the following conditional expressions (1), (2), (3), (4), (7) and (9) are satisfied: 0.13≦La/Lb≦0.17   (1), −2.7≦f4/f≦−2.2   (2), −0.7≦(ne2×f2)/(ne4×f4)≦0   (3), 2.5≦νd3/νd4≦3.5   (4) −2.6≦r2o/rcc≦−2   (7), and −1.2≦r2i/f2≦−0.9   (9).

公开(公告)号：US20170235123A1

公开(公告)日：2017-08-17

申请号：US15585658

申请日：2017-05-03

申请人： OLYMPUS CORPORATION

发明人： Yuji KAMO

IPC分类号： G02B23/24 ,  G02B9/34 ,  A61B1/00

CPC分类号： G02B23/243 ,  A61B1/00163 ,  G02B9/34 ,  G02B9/60 ,  G02B13/04

摘要： There is provided an objective optical system for endoscope which is small-sized, and has a favorable optical performance and fast F-number.An objective optical system for endoscope comprises in order from an object side: a first lens having a negative refractive power; a second meniscus lens having a positive refractive power with a convex surface thereof directed toward the object side; an aperture stop; a third lens having a biconvex shape, and a cemented lens having a positive refractive power as a whole, in which a fourth lens having a biconvex shape and a fifth lens having a negative refractive power are cemented, wherein the objective optical system for endoscope satisfies the following conditional expressions (1), (2), and (9). −3≦f1/Ih≦−1.2  (1) 0.25≦L3_5/L≦0.7  (2) 0.2≦r2/r3≦0.8  (9) where, f1 denotes a focal length of the first lens; Ih denotes the maximum image height of the objective optical system for endoscope; L3_5 denotes a distance along an optical axis from a surface on the object side of the third lens up to a surface on an image side of the fifth lens, L denotes a distance along the optical axis from a surface on the object side of the first lens up to an image plane, r2 denotes a radius of curvature of a surface on an image side of the first lens, and r3 denotes a radius of curvature of a surface on the object side of the second meniscus lens.

公开(公告)号：US20170235120A1

公开(公告)日：2017-08-17

申请号：US15425455

申请日：2017-02-06

申请人： Nikon Corporation

发明人： David M. Williamson

IPC分类号： G02B23/24 ,  A61B1/00 ,  H04N13/02 ,  A61B1/04 ,  G02B9/62 ,  G02B13/18

CPC分类号： G02B23/243 ,  A61B1/00096 ,  A61B1/00193 ,  A61B1/04 ,  G02B9/62 ,  G02B13/04 ,  G02B13/18 ,  G02B23/2415 ,  H04N13/239 ,  H04N13/257

摘要： Non-telecentric in image space optical objective dimensioned to operate as part of intravascular endoscope probe and including first and second groups of lens elements (separated by an aperture stop) each of which has negative optical power. The first group of lens elements includes a first meniscus lens with a positive dioptric power and a first optical doublet. The second group of lens elements includes a sequence of second and third optical doublets and a second meniscus lens that follows the third optical doublet. At least one of the first and second groups of lens elements includes an aspheric refractive surface, thereby reducing distortion down to under 0.25% for field angles up to at least 40 degrees.

公开(公告)号：US20170212330A1

公开(公告)日：2017-07-27

申请号：US15328875

申请日：2014-09-03

申请人： HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD.

发明人： Jiaying LI ,  Chaoming ZHOU ,  Yunfeng GAO

IPC分类号： G02B13/00 ,  G02B9/64

CPC分类号： G02B13/001 ,  G02B9/64 ,  G02B13/04

摘要： A photographic objective lens includes a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5), a sixth lens (L6), and a seventh lens (L7), which are sequentially coaxially arranged along a propagation direction of incident light, wherein the first lens (L1) is a negative meniscus lens; the second lens (L2) is a drum lens; the third lens (L3) is a negative meniscus lens; the fourth lens (L4) is a drum lens; the fifth lens (L5) is a biconcave lens; the sixth lens (L6) is a positive meniscus lens; the seventh lens (L7) is a biconvex lens; the two curved surfaces of each lens are the light incidence surface and the light outgoing surface of the lens, respectively.

公开(公告)号：US20170212329A1

公开(公告)日：2017-07-27

申请号：US15273167

申请日：2016-09-22

申请人： Samsung Electro-Mechanics Co., Ltd.

发明人： Seong Ho HWANG ,  Hyuk Joo KIM

IPC分类号： G02B9/62

CPC分类号： G02B9/62 ,  G02B5/005 ,  G02B5/208 ,  G02B13/04 ,  H04N5/2254

摘要： An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens includes a negative refractive power, and the second lens includes a negative refractive power. The third lens includes a positive refractive power, and the fourth lens includes a positive refractive power, an object-side surface thereof being concave. The fifth lens includes a positive refractive power. The sixth lens includes a negative refractive power. The first to sixth lenses are sequentially disposed from an object side toward an imaging plane. One lens of the first to sixth lenses is cemented to a lens adjacent thereto.

公开(公告)号：US20170199354A1

公开(公告)日：2017-07-13

申请号：US15361097

申请日：2016-11-25

申请人： FUJIFILM Corporation

发明人： Hiroaki KOBAYASHI ,  Takeshi KAMIYA

IPC分类号： G02B13/00 ,  G02B27/00 ,  G02B7/02 ,  G02B9/62

CPC分类号： G02B13/0045 ,  G02B7/028 ,  G02B13/04

摘要： Provided are an imaging lens that has a small amount of focus shift caused by temperature fluctuation and an imaging apparatus that has this imaging lens. The imaging lens consists of, in order from an object side: a first lens that is convex toward the object side and has a negative refractive power; a second lens that has a negative refractive power; a third lens that has a positive refractive power; a fourth lens that has a positive refractive power; a fifth lens that has a positive refractive power; and a sixth lens that has a negative refractive power. The imaging lens satisfies the following conditional expressions (1) to (4). −0.89

公开(公告)号：US20170192200A1

公开(公告)日：2017-07-06

申请号：US15045344

申请日：2016-02-17

申请人： LARGAN PRECISION CO., LTD.

发明人： Tung-Yi Hsieh ,  Hsuan-Chin Huang ,  Wei-Yu Chen

IPC分类号： G02B9/64 ,  G02B13/00 ,  G02B27/00

CPC分类号： G02B9/64 ,  G02B13/0045 ,  G02B13/04 ,  G02B27/0025 ,  G02B27/0081

摘要： An image capturing optical lens assembly includes, in order from an object side to an image side, a front lens group, an aperture stop and a rear lens group. The front lens group includes at least two lens elements, wherein one lens element closest to an imaged object of the at least two lens elements has negative refractive power and an image-side surface being concave. The rear lens group includes at least four lens elements, wherein one lens element closest to an image surface of the at least four lens elements has an image-side surface being concave. The image capturing optical lens assembly has a total of eight lens elements.

公开(公告)号：US09696520B2

公开(公告)日：2017-07-04

申请号：US14875835

申请日：2015-10-06

申请人： Sintai Optical (Shenzhen) Co., Ltd. ,  AO Ether Corporation

发明人： Yuan-Fan Liang ,  Tsan-Haw Lee

IPC分类号： G02B3/02 ,  G02B13/00 ,  G02B13/04 ,  G02B9/64 ,  G02B27/00

CPC分类号： G02B13/0045 ,  G02B9/64 ,  G02B13/006 ,  G02B13/04 ,  G02B27/0025

摘要： A wide-angle lens, from an object side to an image side along an optical axis, 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 and a ninth lens. The first, second and third lens are with negative refractive power. The fourth, fifth, sixth and seventh lens are with refractive power. The eighth lens is a biconvex lens with positive refractive power. The ninth lens is a biconvex lens with positive refractive power. The first lens, the second lens and the third lens satisfy: −26

公开(公告)号：US20170184828A1

公开(公告)日：2017-06-29

申请号：US15418773

申请日：2017-01-29

申请人： Nikon Corporation

发明人： Kosuke MACHIDA

IPC分类号： G02B15/20 ,  G02B15/173 ,  H04N5/225 ,  G02B15/14

CPC分类号： G02B15/20 ,  G02B5/005 ,  G02B13/009 ,  G02B13/04 ,  G02B13/18 ,  G02B15/14 ,  G02B15/15 ,  G02B15/16 ,  G02B15/167 ,  G02B15/173 ,  G02B15/177 ,  G02B27/0025 ,  G02B27/646 ,  H04N5/225

摘要： Composing, in order from an object side, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power and at least one lens group G3; upon varying magnification, a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and a lens group G3 at an image side of the second lens group G2 and adjacent thereto, being varied; and a given conditional expression being satisfied; thereby providing a variable magnification optical system having a superb optical performance upon focusing, an optical device and a method for manufacturing the variable magnification optical system.

公开(公告)号：US20170176721A1

公开(公告)日：2017-06-22

申请号：US15371509

申请日：2016-12-07

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Dong-woo KIM ,  Shuji YONEYAMA

IPC分类号： G02B13/00 ,  G02B27/00 ,  G02B27/64 ,  G02B9/18 ,  G02B5/00

CPC分类号： G02B13/0045 ,  G02B5/005 ,  G02B9/18 ,  G02B13/006 ,  G02B13/04 ,  G02B27/0025 ,  G02B27/646

摘要： A single focus lens and a photographing apparatus including the single focus lens are provided. The photographing apparatus includes a single focus lens comprising: a first lens group having a positive refractive power, the first lens group including a first negative lens and a second negative lens arranged in succession at a most object side of the first lens group; a second lens group having a negative refractive power; and a third lens group having a positive refractive power and including a positive lens and a negative lens. The first to third lens groups are sequentially arranged in a direction from an object side to an image side.