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1. (WO1997016024) HOCKEY PUCK SHAPED CONTINUOUS DIFFUSE ILLUMINATION APPARATUS AND METHOD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016024 International Application No.: PCT/US1996/016996
Publication Date: 01.05.1997 International Filing Date: 22.10.1996
Chapter 2 Demand Filed: 21.05.1997
IPC:
G01N 21/88 (2006.01) ,G01N 21/956 (2006.01) ,G02B 21/08 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
84
Systems specially adapted for particular applications
88
Investigating the presence of flaws, defects or contamination
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
84
Systems specially adapted for particular applications
88
Investigating the presence of flaws, defects or contamination
95
characterised by the material or shape of the object to be examined
956
Inspecting patterns on the surface of objects
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
21
Microscopes
06
Means for illuminating specimen
08
Condensers
Applicants:
NORTHEAST ROBOTICS, INC. [US/US]; 15 Twin Bridge Road P.O. Box 189 Weare, NH 03281, US (AllExceptUS)
WHITE, Thimoty, P. [US/US]; US (UsOnly)
Inventors:
WHITE, Thimoty, P.; US
Agent:
BUJOLD, Michael, J. ; 500 North Commercial Street Manchester, NH 03101, US
Priority Data:
08/546,77923.10.1995US
Title (EN) HOCKEY PUCK SHAPED CONTINUOUS DIFFUSE ILLUMINATION APPARATUS AND METHOD
(FR) APPAREIL POUR ECLAIREMENT DIFFUS CONTINU AYANT LA FORME D'UN PALET DE HOCKEY ET PROCEDE ASSOCIE
Abstract:
(EN) The method and apparatus for providing a continuous, uniformed, diffused light environment for use in conjunction with an electronic machine vision or manual microscope inspection system, particularly for inspection of specular surfaces such as ball bearings, reflective packaging and other shiny surfaces. The illumination device (2) includes a source of light (24) which is associated with at least the secondary diffusers (26) to provide secondary diffused illumination, of an object (o) to be observed, substantially along the observation axis (A) of the object. The same light source may also illuminate a rear surface of the primary diffuser (10). The height of the illumination device is approximately three and one half times the clear aperture (CA) dimension of the illumination device or less. The illumination of the object with light which is equal in intensity and character to facilitate accurately viewing of the entire area of the object to be viewed.
(FR) Cette invention concerne un procédé et un appareil permettant de créer un environnement lumineux diffus, uniforme et continu, destiné à être utilisé conjointement avec un dispositif de vision artificielle électronique ou de contrôle manuel par microscope, notamment pour le contrôle de surfaces spéculaires telles que roulements à bille, boîtier d'encapsulation réfléchissant et autres surfaces brillantes. Le dispositif d'éclairement (2) comporte une source lumineuse (24) qui est associée au moins aux diffuseurs (26) secondaires de façon à assurer un éclairement secondaire diffus d'un objet (o) à observer, sensiblement le long de l'axe d'observation (A) de l'objet. La même source lumineuse peut également éclairer une surface arrière du diffuseur primaire (10). La hauteur du dispositif d'éclairement est approximativement égale ou inférieure à trois fois et demi la dimension de l'ouverture (CA) du dispositif d'éclairement. L'éclairement de l'objet par une lumière d'intensité et de caractéristiques uniformes facilite la visualisation précise de la totalité de la zone de l'objet à observer.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0857391US6059421CA2235406AU1996075197