FR2618211A1 - Frontal illumination device making it possible to observe narrow and deep cavities - Google Patents

Frontal illumination device making it possible to observe narrow and deep cavities Download PDF

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Publication number
FR2618211A1
FR2618211A1 FR8710412A FR8710412A FR2618211A1 FR 2618211 A1 FR2618211 A1 FR 2618211A1 FR 8710412 A FR8710412 A FR 8710412A FR 8710412 A FR8710412 A FR 8710412A FR 2618211 A1 FR2618211 A1 FR 2618211A1
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mirror
order
light source
characterized
particular
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FR8710412A
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French (fr)
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FR2618211B1 (en
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Chardon Bernard
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L14/00Electric lighting devices without a self-contained power source, e.g. for mains connection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L15/00Details of kinds solely applicable to the devices covered by groups F21L2/00 - F21L14/00
    • F21L15/06Details of kinds solely applicable to the devices covered by groups F21L2/00 - F21L14/00 concerned with the fitting
    • F21L15/08Supporting and suspending elements
    • F21L15/10Supporting and suspending elements without arrangements for adjustment
    • F21L15/14Clips; Clamps; Head fittings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/08Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
    • F21V21/084Head fittings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20Lighting for medical use

Abstract

The invention relates to a frontal illumination device which can be fixed to the head of the user and makes it possible to observe narrow and deep cavities by providing a beam of substantially parallel light rays and an intense and homogeneous light spot, a light source 4 placed opposite the reflecting face of the mirror 1; means 5 for adjusting the distance separating the light source 4 from the mirror 1, characterised in that the mirror 1 is a concave mirror with symmetry about a long axis and having an average radius of curvature of less than 30 mm - in particular of the order of 27 mm - for a maximum transverse dimension of the order of 30 mm, and in that the light source 4 is placed on the long optical axis of the mirror 1. <IMAGE>

Description

DISPOSITIF D'ECLAIRAGE FRONTAL PERMETTANT O'OBSERVER DES CAVITES ILLUMINATION DEVICE FOR FRONT O'OBSERVER CAVITIES
ETROITES ET PROFONDES NARROW AND DEEP
L'invention concerne un dispositif d'éclairage frontal portatif pouvant être fixé à la tête de l'utilisateur et permettant d'observer à courte distance des cavités étroites et profondes en fournissant un faisceau de rayons lumineux sensiblement parallèles et une tache de lumière intense, notamment pour examens médicaux. The invention relates to a portable frontlight device attachable to the head of the user to observe and short narrow and deep cavities by providing a light beam substantially parallel and intense spot of light, including medical examinations.

On connaît déjà de tels dispositifs d'éclairage. already known such lighting devices. On connaît en particulier du brevet français N' 1 304 682, un dispositif d'éclairage qui comporte un miroir concave de faible courbure couvrant substantiellement la partie supérieure du nez, les dimensions transversales étant telles que le champ visuel n'est pas limité ni en hauteur ni latéralement, une source lumineuse mobile étant disposée devant le miroir. in particular is known from French Patent No. 1304682, an illuminating device which comprises a concave mirror of low curvature substantially covering the upper part of the nose, the transverse dimensions being such that the visual field is not limited nor height or laterally, a light source being movable arranged in front of the mirror. La position de la source lumineuse est-décalée en hauteur par rapport à l'axe du miroir. The position of the light source is offset in height relative to the axis of the mirror. Le problème posé par de tels dispositifs réside dans le fait que l'ampoule étant disposée devant le miroir pertube le faisceau lumineux réfléchi, l'ombre de l'ampoule étant en général projetée. The problem with such devices is that the bulb being arranged in front of the mirror disturbs the reflected light beam, the shadow of the bulb being projected in general. La tache lumineuse n'est donc pas parfaitement symétrique ni d'intensité régulière. The bright spot is not perfectly symmetrical or regular intensity. De plus, le miroir étant d'une faible courbure, la puissance lumineuse projetée est faible. In addition, the mirror being of a small curvature, the projected light intensity is low.

On connaît également d'autres dispositifs d'éclairage similaires pour lesquels on cherchait à obtenir une tâche lumineuse aussi étroite que possible afin d'obtenir une intensité maximale en fonction des dimensions de la cavité à observer. It is also known other similar lighting devices for which it was sought to obtain a narrow light spot as possible to obtain maximum intensity depending on the cavity dimensions to be observed. Mais celà nécessite une plage de réglages. But this requires a range of settings. importante de la taille de la tâche lumineuse au détriment de son homogénéité et de son intensité. large size of the light spot at the expense of its homogeneity and intensity. Dans tous les dispositifs antérieurs à miroir on constate des aberrations sur la tâche lumineuse et la puissance projetée n'est pas suffisante. In all prior art devices there is mirror aberrations on the light spot projected and the power is not sufficient.

L'invention vise à remédier aux inconvénients pré-cités des dispositifs d'éclairage connus, et propose un tel dispositif qui fournisse une tâche lumineuse intense et d'intensité parfaitement régulière et homogène, sur une surface de diamètre de l'ordre de 5cm pour une' distance d'observation de 25cm à 50cm, l'ombre de la source lumineuse n'étant pas projetée, et ce avec un faisceau de lumière The invention aims to overcome the afore-mentioned drawbacks of known lighting devices, and offers a device that provides an intense light spot and perfectly uniform and homogeneous intensity on a surface diameter of 5cm in order to an observation distance of 25cm to 50cm, the shadow of the light source is not projected, and with a light beam
Un autre objet de l'invention est de procurer un tel dispositif d'éclairage fournissant une tache de lumière plus intense que les dispositifs de l'art antérieur. Another object of the invention to provide such a lighting device providing a more intense spot of light that the devices of the prior art. Un autre objet de l'invention est de procurer un tel dispositif qui soit de plus simple à utiliser, léger, facilement transportable et de faible prix de revient. Another object of the invention to provide such a device which is simpler to use, lightweight, easily transportable and low cost.

Pour ce faire, l'invention propose un dispositif d'éclairage frontal portatif pouvant être fixé à la tête de l'utilisateur et permettant d'observer à courte distance des cavités étroites et profondes en fournissant un faisceau. To do this, the invention proposes a portable frontlight device attachable to the head of the user to observe and short narrow and deep cavities by providing a beam. de rayons lumineux sensiblement parallèles et une tache de lumière intense et homogène -notamment de diamètre de l'ordre de 5cm pour une distance d'observation de 25 à 50cm-, du type comportant un miroir concave solidaire d'un support de miroir associé à un dispositif de fixation de l'ensemble sur la tête de l'utilisateur une source lumineuse placée en regard de la face réfléchissante du miroir des des moyens de réglage de la distance séparant la source lumineuse du miroir ; substantially parallel light rays and intense spot of light and in particular of uniform diameter in the range of 5cm to an observation distance of 25 to 50cm- of the type comprising a concave mirror fixed to an associated mirror carrier to one of the set fastening device on the user's head a light source placed facing the reflecting face of the mirror adjusting means of the distance between the light source mirror; la position et les dimensions du miroir étant telles que le miroir recouvre substantiellement la partie supérieure du nez pour une observation binoculaire, le faisceau de lumière réfléchie étant orienté selon l'axe visuel, caractérisé en ce que le miroir est un miroir concave symétrique autour d'un grand axe et ayant un rayon de courbure moyen inférieur à 30mm -notamment de l'ordre de 27mm- pour une dimension transversale maximale de l'ordre de 30mm, et en ce que la source lumineuse est placée sur le grand axe optique du miroir. the position and dimensions of the mirror being such that the mirror substantially covers the upper part of the nose to a binocular observation, the reflected light beam being oriented in the visual axis, characterized in that the mirror is a concave mirror symmetrical around a major axis and having a radius of curvature lower average 30mm particular of the order of 27mm- to a maximum transverse dimension of the order of 30mm, and in that the light source is placed on the general optical axis of the mirror. Les moyens de réglage de la distance séparant la source du miroir permettent de placer cette source lumineuse sur le grand axe du miroir à une distance d du sommet S du miroir inférieure à 15mm -notamment de l'ordre de 13,5mm-. The distance setting means between the source of the mirror are used to place the light source on the major axis of the mirror in a vertex distance d S of the lower mirror 15mm particular of the order of 13,5mm-. De préférence, le miroir est sphérique et son demi-angle d'ouverture est supérieur à 30'. Preferably, the mirror is spherical and half-opening angle is greater than 30 '.

L'inventeur a constaté qu'avec de telles dispositions, on obtient de façon surprenante une tache lumineuse extrêmement intense, homogène, et dont le diamètre est de l'ordre de 5cm à une distance de projection comprise entre 25 et 50cm. The inventor has found that with such provisions, one surprisingly gets extremely intense spotlight, homogeneous, and with a diameter of about 5cm at a projection distance of between 25 and 50cm. Par ailleurs, les faisceaux lumineux étant sensiblement parallèles, l'observation peut être faite à plus grande distance sans inconvénient, et des cavités très étroites et très profondes peuvent être éclairées. Furthermore, the light beams being substantially parallel, the observation can be made at a greater distance without disadvantage, and very narrow and very deep cavities can be illuminated. Contrairement à ce qui était prévu dans l'art antérieur, l'inventeur a montré que le fait que les dimensions de la tâche lumineuse soient supérieures à celles de la cavité à observer né nuit pas l'observation, dès lors que la puissance lumineuse est suffisante. Contrary to what was expected in the prior art, the inventor has shown that the dimensions of the light spot are superior to those of the cavity to observe not born overnight observation, since the light power is sufficient. il n'est donc pas nécessaire de prévoir une large plage de focalisation. so it is not necessary to provide a wide focus range.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante qui se réfère aux figures annexées dans lesquelles Other features and advantages of the invention will appear on reading the following description which refers to the appended figures in which
La figure 1 est une vue schématique en perspective d'un dispositif Figure 1 is a schematic perspective view of a device
selon l'invention, , .La figure 2 est une vue latérale du même dispositif monté sur la according to the invention, .The Figure 2 is a side view of the same device mounted on the
tête d'un observateur. head of an observer.

L'invention concerne un dispositif d'éclairage frontal portatif pouvant être fixé à la tête de l'utilisateur et permettant d'observer à courte.distance des cavités étroites et profondes en fournissant un faisceau de rayons lumineux sensiblement parallèles et formant une tache de lumière intense et homogène -notamment de diamètre de l'ordre de 5cm pour une distance d'observation de 25 à 50cm- r du type comportant un miroir concave 1 solidaire d'un support de miroir 2 associé à un dispositif de fixation 3 de l'ensemble sur la tête de l'utilisateur. The invention relates to a portable frontlight device attachable to the head of the user and allowing to observe courte.distance narrow and deep cavities by providing a light beam substantially parallel and forming a light spot intense and homogeneous particular of diameter of about 5 cm for a viewing distance of 25 to 50cm- r of the type including a concave mirror 1 fixed to a mirror holder 2 associated with an attachment device 3 of the together on the head of the user. Ce dispositif de fixation 3 peut par exemple être constitué d'un bandeau de tête. This fastening device 3 may for example consist of a headband. Une source lumineuse 4 est placée en regard de la face réfléchissante du miroir 1, elle-même orientée vers l'avant. A light source 4 is placed facing the reflective face of the mirror 1, itself oriented toward the front. Des moyens 5 de réglage de la distance d séparant la source lumineuse 4 du miroir 1 sont prévus. Means 5 for adjusting the distance d between the light source 4 of the mirror 1 are provided. La position et les dimensions du miroir 1 sont telles que ce miroir 1 recouvre substantiellement la partie supérieure du nez de l'utilisateur pour une observation binoculaire, le faisceau de lumière réfléchie étant orienté selon l'axe visuel de l'utilisateur. And the position of the mirror 1 the dimensions are such that the mirror 1 substantially covers the upper part of the user's nose to a binocular observation, the reflected light beam being oriented in the visual axis of the user.

Selon l'invention, le miroir 1 est un miroir concave symétrique autour d'un grand axe 6 et ce miroir 1 a un rayon de courbure moyen inférieur à 30mm -notamment de l'ordre de 27mm- pour une direction transversale maximale de l'ordre de 30mm et la source lumineuse 4 est placée sur le grand axe optique 6 du miroir 1. De plus, les moyens 5 de réglage de la distance d séparant la source lumineuse 4 du miroir 1 permettent de placer cette source lumineuse 4 sur le grand axe 6 du miroir 1 à une distance d du sommet S du miroir 1 inférieure à 1Smm -notamment de l'ordre de 13,5mm-. According to the invention, the mirror 1 is a symmetrical concave mirror around a long axis 6 and the mirror 1 has a mean radius of curvature less than 30mm particular of the order of 27mm- for maximum transverse direction of the 30mm order and the light source 4 is placed on the large optical axis 6 of the mirror 1. in addition, the means 5 for adjusting the distance d between the light source 4 of the mirror 1 are used to place the light source 4 on the large axis 6 of the mirror 1 to a vertex distance d S of the mirror 1 below 1Smm particular of the order of 13,5mm-.

De préférence, le miroir 1 est un miroir sphérique concave dont le plus grand diamètre est de l'ordre de 30mm, et dont le rayon de courbure est de l'ordre de 27mm. Preferably, the mirror 1 is a concave spherical mirror having the largest diameter is of the order of 30mm, and whose radius of curvature is of the order of 27mm. Le demi-angle d'ouverture a (entre le grand axe 6 et la droite joignant le bord extrême 7 du miroir 1 et son centre de courbure C) d'un miroir 1 selon l'invention est supérieur à 30 -notamment de l'ordre de 35' plus ou moins 3'-. The half-aperture angle a (between the major axis 6 and the straight line joining the end edge 7 of the mirror 1 and its center of curvature C) of a mirror 1 according to the invention is greater than 30 in particular of the about 35 more or less 3'.

La source lumineuse 4 est avantageusement constituée du filament 8 d'une ampoule dont le culot 9 est tourné vers l'avant et a un diamètre inférieur à 15mm -notamment de l'ordre de IOmm-. The light source 4 is advantageously formed of a filament bulb 8 whose base 9 is rotated forward and has a diameter less than 15mm particular of the order of IOmm-. Le bord avant 10 du culot 9 est placé de préférence à environ IOmm du filament 8 de l'ampoule. The front edge 10 of the base 9 is placed preferably at about 8 IOmm filament of the bulb. Le filament 8 a une longueur comprise de préférence entre 1 et 5mm -notamment de l'ordre de 3mm-. The filament 8 has a length of preferably between 1 and 5mm particular of the order of 3mm-.

De préférence, l'ampoule est supportée par deux fils conducteurs métalliques rigides 11 qui l'alimentent en électricité et qui sont articulés à deux bornes de connexion 12 solidaires du support de miroir 2, constituant ainsi des moyens de maintien de l'ampoule à la distance d du miroir 1, et les moyens 5 de réglage de la distance d. Preferably, the bulb is supported by two son rigid metal conductors 11 which feed electricity and which are articulated to two connecting terminals 12 integral with the mirror holder 2, thus constituting the bulb holding means to the distance of the mirror 1, and means 5 for adjusting the distance d.

Deux fils d'alimentation 13 sont connectées aux bornes 12 pour alimenter l'ampoule en électricité. Two power son 13 are connected to terminals 12 for supplying electricity bulb.

Il est préférable d'allonger au maximum la longueur des conducteurs de support de l'ampoule. It is preferable to extend the maximum length of the support leads of the bulb. Par exemple, la distance entre les bornes de connexion 12 et le grand axe 6 est comprise entre 30 et 50mm -notamment de l'ordre de 40mm-, For example, the distance between the connection terminals 12 and the major axis 6 is between 30 and 50mm particular of the order of 40mm-,
L'inventeur a déterminé que les caractéristiques précédentes d'un dispositif selon l'invention permettent de réaliser une tache lumineuse intense et homogène d'environ 5mm de diamètre pour les distances courantes d'observation de 25cm à 50cm. The inventor has determined that the preceding characteristics of a device according to the invention enable an intense and homogeneous light spot of about 5mm in diameter for the current observation distances 25cm to 50cm. Aucune ombre n'est observée sur la tache lumineuse, du fait des caractéristiques géométriques et optiques du dispositif selon l'invention, et l'intensité lumineuse est très supérieure à celle obtenue avec les dispositifs de l'art antérieur. No shadow was observed on the light spot, due to geometric and optical characteristics of the device according to the invention and the light intensity is very higher than that obtained with the devices of the prior art.

Par ailleurs, le dispositif selon l'invention comporte avantageusement, associées au support de miroir 2, deux lentilles (non représentées) formant loupes qui, en positions déployées sur chaque côté du support de miroir 2, constituent des lunettes grossissantes pour l'utilisateur. Furthermore, the device according to the invention advantageously comprises, associated with the mirror holder 2, two lenses (not shown) forming magnifiers which in deployed positions on each side of the mirror holder 2 constitute a magnifying glass for the user. De telles lentilles sont avantageusement articulées à la face arrière 15 du support de miroir 2 pour pouvoir être escamotables d'une position escamotée où elles sont disposées verticalement et n'interfèrent pas avec le champ de vision de l'utilisateur, à une position déployée où elles viennent horizontalement en regard des yeux de l'utilisateur. Such lenses are advantageously hinged to the rear face 15 of the mirror holder 2 to be retractable to a retracted position where they are disposed vertically and do not interfere with the user's field of view, to a deployed position where they horizontally come opposite the eyes of the user.

Claims (7)

REVENDICATIONS
1) Dispositif d'éclairage frontal portatif pouvant être fixé à la tête de l'utilisateur et permettant d'observer à courte distance des cavités étroites et profondes en fournissant un faisceau de rayons lumineux sensiblement parallèles et une tache de lumière intense et homogène -notamment de diamètre de l'ordre de 5cm pour une distance d'observation de 25 à 50cm-, du type comportant un miroir concave (1) solidaire d'un support de miroir (2) associé à un dispositif de fixation (3) de l'ensemble sur la tête de l'utilisateur; 1) The hand-held frontlight attachable to the head of the user to observe and short narrow and deep cavities by providing a light beam substantially parallel and intense spot of light and uniform-in particular diameter of the order of 5cm to an observation distance of 25 to 50cm- of the type having a concave mirror (1) secured to a mirror support (2) associated with a fastening device (3) of all the head of the user; une source lumineuse (4) placée en regard de la face réfléchissante du miroir (1) des moyens (5) de réglage de la distance (d) séparant la source lumineuse (4) du miroir (1) ; a light source (4) placed opposite the reflecting face of the mirror (1) means (5) for adjusting the distance of (d) separating the light source (4) of the mirror (1); la position et les dimensions du miroir (1) étant telles que le miroir (1) recouvre substantiellement la partie supérieure du nez pour une observation binoculaire, le faisceau de lumière réfléchie étant orienté selon l'axe visuel, caractérisé en ce que le miroir (1) est un miroir concave symétrique autour d'un grand axe (6) et ayant un rayon de courbure moyen inférieur à 30mm -notamment de l'ordre de 27mm- pour une dimension transversale maximale de l'ordre de 30mm, et en ce que la source lumineuse (4) est placée sur le grand axe optique (6) du miroir (1). the position and dimensions of the mirror (1) being such that the mirror (1) substantially covers the upper part of the nose to a binocular observation, the reflected light beam being oriented in the visual axis, characterized in that the mirror ( 1) is a concave mirror symmetrical around a main axis (6) and having a radius of curvature lower average 30mm particular of the order of 27mm- to a maximum transverse dimension of the order of 30mm, and in that that the light source (4) is placed on the large optical axis (6) of the mirror (1).
2) Dispositif selon la revendication 1, caractérisé en ce que 1es moyens (5) de réglage de la distance (d) séparant la source lumineuse (4) du miroir (1) permettent de placer cette source lumineuse (4) sur le grand axe (6) du miroir (1) à une distance (d) du sommet (s) inférieure à 15mm -notamment de l'ordre de 13,5mm-. 2) Device according to claim 1, characterized in that 1ES means (5) for adjusting the distance (d) between the light source (4) of the mirror (1) allow to place the light source (4) on the major axis (6) of the mirror (1) at a distance (d) from the top (s) of less than 15mm particular of the order of 13,5mm-.
3) Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le miroir (1) est un miroir sphérique dont le demi-angle d'ouverture (tel) est supérieur à 30' -notamment est de l'ordre de 35' plus ou moins 3'-. 3) Device according to any one of claims 1 and 2, characterized in that the mirror (1) is a spherical mirror with a half aperture angle (as) is greater than 30 'is-especially of the order 35 more or less 3'.
4) Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la source lumineuse (4) est constituée du filament (8) d'un ampoule dont le culot (9) est tourné vers l'avant et a un diamètre inférieur à 15mm -notamment de l'ordre de îOmm-. 4) Device according to any one of claims 1 to 3, characterized in that the light source (4) consists of the filament (8) of a bulb of which the pellet (9) is rotated forward and a diameter of less than 15mm particular of the order of îOmm-.
5) Dispositif selon la revendication 4, caractérisé en ce que le bord avant (10) du culot (9) est placé à environ îOmm du filament (8) de l'ampoule. 5) Device according to claim 4, characterized in that the front edge (10) of the cap (9) is placed about îOmm filament (8) of the bulb.
6) Dispositif selon l'une quelconque des revendications 4 et 5, caractérisé en ce que le filament (8) a une longeur comprise entre 1 et 5mm -notamment de l'ordre de 3mm-. 6) Device according to any one of claims 4 and 5, characterized in that the filament (8) has a length between 1 and 5mm particular of the order of 3mm-.
7) Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il comporte, associées au support de miroir (2), deux lentilles formant loupes qui, en position déployées sur chaque côté, constituent des lunettes grossissantes pour l'utilisateur. 7) Device according to any one of claims 1 to 6, characterized in that it comprises, associated with the mirror holder (2), the two lenses forming magnifiers which in the position deployed on each side, form a magnifying glass for 'user.
FR8710412A 1987-07-15 1987-07-15 Front lighting device for observing narrow and deep cavities. Expired - Fee Related FR2618211B1 (en)

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FR8710412A FR2618211B1 (en) 1987-07-15 1987-07-15 Front lighting device for observing narrow and deep cavities.

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FR8710412A FR2618211B1 (en) 1987-07-15 1987-07-15 Front lighting device for observing narrow and deep cavities.

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FR2618211A1 true FR2618211A1 (en) 1989-01-20
FR2618211B1 FR2618211B1 (en) 1991-11-15

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