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1. (WO2017090342) ENDOSCOPE OBJECTIVE OPTICAL SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/090342 International Application No.: PCT/JP2016/080773
Publication Date: 01.06.2017 International Filing Date: 18.10.2016
IPC:
G02B 13/04 (2006.01) ,A61B 1/00 (2006.01) ,G02B 23/26 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13
Optical objectives specially designed for the purposes specified below
04
Reversed telephoto objectives
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
1
Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
23
Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
24
Instruments for viewing the inside of hollow bodies, e.g. fibrescopes
26
using light guides
Applicants:
オリンパス株式会社 OLYMPUS CORPORATION [JP/JP]; 東京都八王子市石川町2951番地 2951, Ishikawa-machi, Hachioji-shi, Tokyo 1928507, JP
Inventors:
小竿明彦 OZAO Akihiko; JP
Agent:
斎藤圭介 SAITO Keisuke; JP
平山巌 HIRAYAMA Iwao; JP
Priority Data:
2015-23052226.11.2015JP
Title (EN) ENDOSCOPE OBJECTIVE OPTICAL SYSTEM
(FR) SYSTÈME OPTIQUE D'OBJECTIF D'ENDOSCOPE
(JA) 内視鏡対物光学系
Abstract:
(EN) Provided is an endoscope objective optical system which prevents halation due to laser light, which has a short entire length, which allows a lens to be easily processed and assembled, and which has tolerance to temperature change during autoclaving. The endoscope objective optical system combined with a solid-state imaging element is characterized by comprising, in order from the object side, a planoconcave negative lens L1, an absorption type filter F1, an aperture stop S, and a planoconvex positive lens L2, and by satisfying the following conditional expression (1): 0.5≤tg1/tl≤0.8 (1), wherein tg1 represents a length, along an optical axis AX, from an object-side surface of the planoconcave negative lens L1 to an image-side surface of the planoconvex positive lens L2, and tl represents the entire length of the endoscope objective optical system.
(FR) L'invention concerne un système optique d'objectif d'endoscope qui empêche une formation de halo due à une lumière laser, qui a une courte longueur totale, qui permet à une lentille d'être aisément traitée et assemblée, et qui présente une tolérance aux variations de température pendant un autoclavage. Le système optique d'objectif d'endoscope combiné à un élément d'imagerie à semi-conducteurs est caractérisé en ce qu'il comprend, dans l'ordre depuis le côté objet, une lentille négative plan-concave L1, un filtre de type à absorption F1, un diaphragme S, et une lentille positive plan-convexe L2, et en ce qu'il satisfait l'expression conditionnelle suivante (1) : 0.5≤tg1/tl≤0.8 (1), dans laquelle tg1 représente une longueur, le long d'un axe optique AX, entre une surface côté objet de la lentille négative plan-concave L1 et une surface côté image de la lentille positive plan-convexe L2, et tl représente la longueur totale du système optique d'objectif d'endoscope.
(JA) レーザー光によるハレーションを防止し、光学系の全長が短く、かつレンズの加工・組立が容易であり、オートクレーブ時の温度変化に耐性を有する内視鏡対物光学系を提供すること。 固体撮像素子と組合せる内視鏡対物光学系であり、物体側から順に、平凹負レンズL1と、吸収型フィルターF1と、明るさ絞りSと、平凸正レンズL2と、を有し、以下の条件式(1)を満足することを特徴とする。 0.5≦tg1/tl≦0.8 (1) ここで、tg1は、平凹負レンズL1の物体側面から平凸正レンズL2の像側面までの光軸AXに沿った長さ、tlは、内視鏡対物光学系の全長、である。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
JPWO2017090342CN108139567US20180231763EP3382438