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1. (WO2018225377) ENDOSCOPIC IMAGING SYSTEM
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Pub. No.: WO/2018/225377 International Application No.: PCT/JP2018/015261
Publication Date: 13.12.2018 International Filing Date: 11.04.2018
IPC:
G02B 23/26 (2006.01) ,A61B 1/00 (2006.01) ,G02B 5/30 (2006.01) ,G03B 11/00 (2006.01) ,G03B 19/06 (2006.01) ,H04N 5/225 (2006.01) ,H04N 7/18 (2006.01)
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
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
5
Optical elements other than lenses
30
Polarising elements
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
11
Filters or other obturators specially adapted for photographic purposes
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
19
Cameras
02
Still-picture cameras
04
Roll-film cameras
06
adapted to be loaded with more than one film, e.g. with exposure of one or the other at will
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
225
Television cameras
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
18
Closed-circuit television systems, i.e. systems in which the signal is not broadcast
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:
本間博之 HOMMA Hiroyuki; JP
Agent:
斎藤圭介 SAITO Keisuke; JP
Priority Data:
2017-11251807.06.2017JP
Title (EN) ENDOSCOPIC IMAGING SYSTEM
(FR) SYSTÈME D’IMAGERIE ENDOSCOPIQUE
(JA) 内視鏡撮像システム
Abstract:
(EN) The purpose of the present invention is to provide a compact endoscopic imaging system with which it is possible to obtain an image, in particular, a moving image that has an expanded dynamic range. Provided is an endoscopic imaging system that is equipped with: an imaging optical system which is capable of simultaneously capturing two optical images of a single subject in different brightnesses; an illumination unit 28 which switches between a first illumination light quantity and a second illumination light quantity in synchronization with the timings at which first frame data and second frame data are captured alternately; and a synthesis unit 23 which generates an image having high dynamic range using two images having different brightnesses and obtained from the first frame data and two images having different brightnesses and obtained from the second frame data, wherein when the brightness ratio between two images having different brightnesses is defined as α, the ratio of the first illumination light quantity to the second illumination light quantity is represented as 1/α.
(FR) L’objectif de la présente invention est de fournir un système d’imagerie endoscopique compact avec lequel il est possible d’obtenir une image, en particulier une image animée qui présente une plage dynamique étendue. L’invention concerne un système d’imagerie endoscopique qui est équipé de : un système optique d’imagerie qui est capable de capturer simultanément deux images optiques d’un sujet unique à différentes luminosités ; une unité d’éclairage 28 qui est commutée entre une première quantité de lumière d’éclairage et une deuxième quantité de lumière d’éclairage en synchronisation avec les temporisations auxquelles des premières données de trame et des deuxièmes données de trame sont capturées en alternance ; et une unité de synthèse 23 qui génère une image ayant une plage dynamique élevée au moyen de deux images ayant des luminosités différentes et obtenues à partir des premières données de trame et deux images ayant des luminosités différentes et obtenues à partir des deuxièmes données de trame, dans lequel, lorsque le rapport de luminosité entre deux images ayant des luminosités différentes est défini comme étant alpha, le rapport de la première quantité de lumière d’éclairage à la deuxième quantité de lumière d’éclairage est représenté par 1/α.
(JA) 小型でダイナミックレンジの広い画像、特に動画を得ることができる内視鏡撮像システムを提供すること。 同一の被写体に対して、明るさが異なる2つの光学像を同時に得る撮像光学系と、第1のフレームデータと第2のフレームデータが、交互に撮像されるタイミングと同期して、第1の照明光量と第2の照明光量とに切り替える照明部28と、第1のフレームデータで得られる明るさの異なる2つの画像と、第2のフレームデータで得られる明るさの異なる2つの画像と、によりハイダイナミックレンジの画像を生成する合成部23と、を有し、明るさの異なる2つの画像の明るさ比をαとするとき、第1の照明光量と第2の照明光量の比は1/α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, JO, JP, KE, KG, KH, 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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)