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1. (WO2018106117) DICHROIC PRISM ASSEMBLY WITH FOUR OR FIVE CHANNELS
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Pub. No.: WO/2018/106117 International Application No.: PCT/NL2017/050825
Publication Date: 14.06.2018 International Filing Date: 08.12.2017
IPC:
A61B 1/05 (2006.01) ,A61B 1/00 (2006.01) ,G02B 23/24 (2006.01)
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
04
combined with photographic or television appliances
05
characterised by the image sensor, e.g. camera, being in the distal end portion
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
Applicants:
QUEST PHOTONIC DEVICES B.V. [NL/NL]; Industrieweg 41 1775 PW Middenmeer, NL
Inventors:
MEESTER, Richard Johannes Cornelis; NL
Agent:
NEDERLANDSCH OCTROOIBUREAU; P.O. Box 29720 2502 LS The Hague, NL
Priority Data:
201797309.12.2016NL
Title (EN) DICHROIC PRISM ASSEMBLY WITH FOUR OR FIVE CHANNELS
(FR) ENSEMBLE DE PRISMES DICHROÏQUES À QUATRE OU CINQ CANAUX
Abstract:
(EN) The invention relates to a dichroic prism assembly (P1-P7) configured to receive light from an object image through an entrance face of the dichroic prism assembly, comprising a first prism (P3) and a further dichroic prism assembly (P5, P6, P7) for splitting light in three light components, the first prism having a cross section with at least five corners, each corner having an inside angle of at least 90 degrees. The corners of the first prism are designed so that an incoming beam which enters the entrance face in a direction parallel to a normal of said entrance face is reflected twice inside the prism and exits the prism through an exit face parallel to a normal of said exit face, wherein the normal of the entrance face and the normal of the exit face are perpendicular to each other, and wherein the dichroic prism assembly comprises a compensator prism (P4) between the first prism and the further dichroic prism assembly. The invention also relates to an endoscope and a medical imaging system using such a dichroic prism assembly.
(FR) La présente invention concerne un ensemble de prismes dichroïques (P1-P7) configuré pour recevoir de la lumière provenant d'une image d'objet à travers une face d'entrée de l'ensemble de prismes dichroïques, comprenant un premier prisme (P3) et un ensemble de prismes dichroïques supplémentaire (P5, P6, P7) pour diviser la lumière en trois composantes de lumière, le premier prisme ayant une section transversale avec au moins cinq coins, chaque coin ayant un angle intérieur d'au moins 90 degrés. Les coins du premier prisme sont conçus de sorte qu'un faisceau entrant qui entre par la face d'entrée dans une direction parallèle à la normale de ladite face d'entrée soit réfléchi deux fois à l'intérieur du prisme et sorte du prisme par une face de sortie parallèle à la normale de ladite face de sortie, la normale de la face d'entrée et la normale de la face de sortie étant mutuellement perpendiculaires, et l'ensemble de prismes dichroïques comprenant un prisme compensateur (P4) entre le premier prisme et l'ensemble de prismes dichroïques supplémentaire. L'invention concerne en outre un endoscope et un système d'imagerie médicale utilisant un tel ensemble de prismes dichroïques.
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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: English (EN)
Filing Language: English (EN)