WO2016027634A1 - 内視鏡装置 - Google Patents
内視鏡装置 Download PDFInfo
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- WO2016027634A1 WO2016027634A1 PCT/JP2015/071556 JP2015071556W WO2016027634A1 WO 2016027634 A1 WO2016027634 A1 WO 2016027634A1 JP 2015071556 W JP2015071556 W JP 2015071556W WO 2016027634 A1 WO2016027634 A1 WO 2016027634A1
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- optical system
- illumination optical
- light distribution
- observation
- light
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—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
- A61B1/06—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 with illuminating arrangements
- A61B1/0607—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 with illuminating arrangements for annular illumination
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—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
- A61B1/06—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 with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0676—Endoscope light sources at distal tip of an endoscope
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2461—Illumination
Definitions
- the present invention relates to an endoscope apparatus, and more particularly to an endoscope apparatus provided with a plurality of illumination optical systems at a distal end insertion portion.
- an illumination optical system that irradiates a subject with illumination light an observation optical system that observes the subject, a channel that leads out a treatment instrument, and a nozzle that cleans the lens surface of the observation optical system Etc.
- An endoscope apparatus that efficiently irradiates a wide field of view by arranging a plurality of illumination optical systems has also been proposed.
- an observation window of an observation optical system, a forceps opening having a circular shape larger than the observation window, illumination light, and the like are provided in the front end surface of the insertion portion.
- a plurality of light irradiation windows are arranged so that the plurality of light irradiation windows sandwich the observation window, and the light irradiation angle and light distribution of the illumination optical system arranged close to the observation optical system
- a wide endoscopic device is disclosed.
- the present invention has been made in view of the circumstances described above, and provides an endoscope apparatus capable of suppressing flare and halation and performing good observation while ensuring sufficient light distribution and brightness.
- the purpose is to do.
- One aspect of the present invention is an observation optical system that is provided at a distal end of an insertion portion of an endoscope apparatus and for observing an observation target, and illumination light that is provided in the insertion portion and is emitted from a light source.
- a plurality of illumination optical systems that illuminate the same field of view by distributing light to the illumination optical system, and among the plurality of illumination optical systems, the illumination optical system with the widest light distribution is more than the illumination optical system with the narrowest light distribution.
- An endoscope apparatus that is far from the optical system and satisfies the following conditional expression is provided.
- f W is the focal length of the illumination optical system with the widest light distribution
- f S is the focal length of the illumination optical system with the narrowest light distribution
- ⁇ W is the most object of the illumination optical system with the widest light distribution.
- the outer diameter of the lens located on the side surface, and ⁇ S is the outer diameter of the lens located on the most object side surface of the narrowest light distribution illumination optical system.
- conditional expression (1) by satisfying conditional expression (1), the illumination light quantity can be increased and the light distribution can be wide, flare and halation can be suppressed, and good observation can be performed. If the upper limit of conditional expression (1) is exceeded, the light distribution of the illumination closer to the observation optical system becomes wider, and problems such as flare and halation are likely to occur. On the other hand, if the lower limit of conditional expression (1) is not reached, one of the light distributions becomes too wide, so that only the direction in which the light is placed is brightened, and it is strong against flare and halation, but only a part of the screen. It becomes a bright and uneven illumination optical system.
- conditional expression (1) is satisfied.
- the illumination optical system has a large amount of illumination light or a wide light distribution, the amount of light in the peripheral part increases, so flare that directly enters the observation optical system, and strong resistance to the peripheral part when approaching the subject
- the frequency of occurrence of optical defects such as halation that irradiates light and part of the observation screen flies white increases.
- the illumination optical system arranged close to the observation optical system illumination that reduces flare and halation the light amount of the illumination optical system is reduced and the light distribution is made relatively narrow. There is a need. That is, it is necessary to increase the focal length of the illumination optical system and reduce the lens outer diameter.
- the illumination optical system disposed at a far position needs to be configured with a large illumination light amount and a wide light distribution. That is, the focal length is reduced and the lens outer diameter is increased. That is, it is necessary to satisfy the conditional expression (1) in order to satisfy these two configurations simultaneously.
- conditional expression (1 ′) instead of conditional expression (1), and it is more preferable to apply (1 ′′) instead of (1) or (1 ′).
- conditional expression 1.6 ⁇
- f L is the focal length of the observation optical system
- ⁇ L is the maximum image height of the observation optical system.
- conditional expression (2) it is possible to provide illumination suitable for close-up observation. If the lower limit of conditional expression (2) is not reached, the light distribution of the illumination optical system becomes too narrow, or the visual field range of the observation optical system becomes too wide, and good observation cannot be performed. If the upper limit of conditional expression (2) is exceeded, on the contrary, the field of view of the observation optical system becomes too narrow.
- conditional expression (2) is satisfied. That is, when observing close to the subject, the influence of the illumination optical system arranged far from the observation optical system is weakened, and the illumination optical system arranged at a close position greatly affects the observation. In general, when a close observation is performed, the object becomes a flat object, which may make it difficult to observe by direct reflected light from the object, and the illumination optical system needs to be appropriately set. Furthermore, when close, the necessary irradiation range is strongly affected by the observation range depending on the angle of view of the observation optical system. For this reason, in order to provide illumination particularly suitable for close-up observation, it is necessary to satisfy the conditional expression (2) regarding the relationship between the illumination optical system and the observation optical system.
- conditional expression (2) it is more preferable to apply the following conditional expression (2 ′) instead of conditional expression (2), and it is more preferable to apply (2 ′′) instead of (2) or (2 ′).
- r 1 is the distance between the center of the observation optical system and the center of the illumination optical system with a narrow light distribution
- r 2 is the distance between the center of the observation optical system and the center of the illumination optical system with a wide light distribution.
- conditional expression (3) By satisfying conditional expression (3) in this way, the brightness of the entire observation range at the time of proximity becomes uniform, and better observation can be performed. If the lower limit of the conditional expression (3) is not reached, only the direction in which illumination with a wide light distribution is arranged is illuminated brightly, and the brightness of the entire observation range is not uniform. Moreover, when the upper limit of conditional expression (3) is exceeded, the brightness of the entire observation range is not preferable.
- conditional expression (3) is as follows. When illuminating optical systems with different light distributions are arranged, the brightness of the entire observation range at the time of proximity is more uniform when distant illuminations with a wide light distribution are arranged at a distance from the observation optical system. Therefore, it is preferable to satisfy the conditional expression (3) because good observation is facilitated. It is more preferable to apply the following conditional expression (3 ′) instead of conditional expression (3). 1.2 ⁇ r 2 / r 1 ⁇ 1.8 (3 ′)
- conditional expressions (4) and (5) satisfactory observation can be performed by satisfying the conditional expressions (4) and (5).
- conditional expressions (4) and (5) the light distribution becomes extremely wide below the lower limit, and the frequency of occurrence of optical defects such as flare and halation increases.
- the upper limit in conditional expressions (4) and (5) is exceeded, the illumination optical system is arranged at a position far from the observation optical system, and sufficient light cannot enter the observation range, or the light distribution of the illumination optical system is It is too narrow to ensure sufficient brightness.
- the reason for satisfying the conditional expressions (4) and (5) is as follows.
- the influence also changes. Therefore, for each illumination optical system, it is preferable to appropriately set the illumination light distribution according to the distance between the illumination optical system and the observation optical system. Therefore, it is desirable to satisfy the conditional expressions (4) and (5) in order to perform good observation.
- the angle characteristics of the illumination optical system with the narrowest light distribution and the illumination optical system with the widest light distribution may satisfy the following conditional expressions.
- ⁇ S (60) is the ratio of the amount of emitted light with respect to the center (exit angle 0 °) at 60 ° of the illumination optical system with the narrowest light distribution
- ⁇ W (60) is 60 of the illumination optical system with the widest light distribution. This is the ratio of the amount of emitted light with respect to the center at 0 ° (exit angle 0 °).
- conditional expression (6) it is possible to sufficiently ensure the brightness of the peripheral portion when close to each other. That is, at the time of proximity, the light of a certain illumination optical system in the distance is sufficiently incident within the observation range, so that it is possible to ensure a balanced brightness without unevenness. It is more preferable to apply the following conditional expression (6 ′) instead of conditional expression (6), and it is more preferable to apply (6 ′′) instead of (6) or (6 ′). ⁇ W (60) / ⁇ S (60) ⁇ 1.15 (6 ′) ⁇ W (60) / ⁇ S (60) ⁇ 1.50 (6 ′′)
- the angle characteristics of the illumination optical system with the narrowest light distribution and the illumination optical system with the widest light distribution may satisfy the following conditional expressions.
- ⁇ S (50) is the ratio of the amount of emitted light with respect to the center (exit angle 0 °) at 50 ° of the illumination optical system with the narrowest light distribution
- ⁇ W (50) is the illumination optical system with the widest light distribution. This is the ratio of the amount of emitted light with respect to the center (exit angle 0 °) at 50 °.
- conditional expressions (7) and (8) By satisfying the conditional expressions (7) and (8) in this way, even when the distance between the distal end of the insertion portion of the endoscope apparatus and the subject is somewhat apart, it is possible to perform observation well. If the lower limit of conditional expressions (7) and (8) is not reached, the observation when the distance between the distal end of the insertion portion of the endoscope apparatus and the subject is good will be good, but the observation at the time of proximity will be bad. If the upper limit of conditional expressions (7) and (8) is exceeded, on the contrary, the observation at the time of closeness becomes good, but the distance observation is hindered.
- conditional expressions (7 ′) and (8 ′) instead of the conditional expressions (7) and (8). 0.10 ⁇ ⁇ S (50 °) ⁇ 0.20 (7 ′) 0.15 ⁇ ⁇ W (50 °) ⁇ 0.25 (8 ′)
- the illumination optical system with the widest light distribution has a larger amount of emitted light than the illumination optical system with the narrowest light distribution, and the distance from the observation optical system may be longer.
- the illumination optical system with a wide light distribution is arranged farther than the observation optical system, in order to enable a better observation due to the observation at close proximity, the one with a large amount of light emitted from the illumination optical system with a wide light distribution Is preferred. Even when the illumination optical system with a wide light distribution is arranged at a distance as described above, it is possible to provide a sufficient amount of light to the observation range arranged at a close position by increasing the amount of emitted light.
- the illumination optical system with the widest light distribution has a smaller amount of emitted light than the illumination optical system with the narrowest light distribution, and the distance from the observation optical system may be long. .
- the present invention it is possible to suppress flare and halation while ensuring sufficient light distribution and brightness, and to perform an excellent observation.
- FIG. 1 shows an insertion portion distal end surface 10 of the endoscope apparatus according to the present embodiment.
- the endoscope apparatus has an observation optical system 1 for observing the observation target at the distal end of the insertion section, and distributes illumination light emitted from a light source (not shown) to the observation target to provide the same field of view.
- a plurality of illumination optical systems 2 and 3 for illuminating, a channel 4 for retracting a treatment tool such as a forceps, and a nozzle 5 for cleaning dirt attached to a lens such as an observation window or an illumination window are provided.
- the endoscope apparatus includes two illumination optical systems 2 and 3 having different distances and light distribution characteristics from the observation optical system 1 as a plurality of illumination optical systems.
- the illumination optical system 3 disposed at a position farther than the illumination optical system 2 with respect to the observation optical system 1 is an illumination optical system having a wider light distribution than the illumination optical system 2. . That is, the illumination optical system 2 with a narrow light distribution is arranged at a position away from the center of the observation optical system 1 and the illumination optical system 3 with a wide light distribution is arranged at a position away from r2 (r1 ⁇ r2).
- the illumination optical system 2 has a large amount of illumination light or a wide light distribution, so that the flare that directly enters the observation optical system 1 or the peripheral portion when approaching the subject.
- the frequency of occurrence of optical defects such as halation in which a portion of the observation screen flies white when irradiated with strong light is increased.
- the light amount of the illumination optical system 2 is reduced and the light distribution is relatively narrow. It is necessary to consist of. That is, it is necessary to increase the focal length of the illumination optical system 2 and reduce the lens outer diameter.
- the illumination optical system 3 disposed at a distant position needs to be configured with a large illumination light amount and a wide light distribution. That is, the focal length is reduced and the lens outer diameter is increased. That is, the narrow light distribution illumination optical system 2 and the wide light distribution illumination optical system 3 are arranged so as to satisfy the following conditional expression (1).
- f W is the focal length of the illumination optical system 3 with the widest light distribution
- f S is the focal length of the illumination optical system 2 with the narrowest light distribution
- ⁇ W is the illumination optical system 3 with the widest light distribution. Is the outer diameter of the lens located closest to the object side
- ⁇ S is the outer diameter of the lens located closest to the object side of the illumination optical system 2 with the narrowest light distribution.
- conditional expression (1) By satisfying conditional expression (1), the illumination light quantity can be made large and the light distribution can be wide, flare and halation can be suppressed, and good observation can be performed.
- the upper limit of conditional expression (1) When the upper limit of conditional expression (1) is exceeded, the light distribution of the illumination optical system 2 closer to the observation optical system 1 becomes wider, and problems such as flare and halation are likely to occur.
- the lower limit of conditional expression (1) if the lower limit of conditional expression (1) is not reached, one of the light distributions becomes too wide, so that only the direction in which the light is placed is brightened, and it is strong against flare and halation, but only a part of the screen. It becomes a bright and uneven illumination optical system.
- conditional expression (1 ′) instead of conditional expression (1), and it is more preferable to apply (1 ′′) instead of (1) or (1 ′).
- the illumination optical system 2 and the observation optical system 1 are configured to satisfy the following conditional expression (2) in order to provide an illumination optical system particularly suitable for close-up observation.
- f L is the focal length of the observation optical system
- phi L is the maximum image height of the observation optical system 1.
- conditional expression (2) illumination suitable for close-up observation can be achieved. If the lower limit of conditional expression (2) is not reached, the light distribution of the illumination optical system 2 becomes too narrow, or the visual field range of the observation optical system 1 becomes too wide, so that good observation cannot be performed. If the upper limit of conditional expression (2) is exceeded, on the contrary, the viewing field of the observation optical system 1 becomes too narrow.
- conditional expression (2) it is more preferable to apply the following conditional expression (2 ′) instead of conditional expression (2), and it is more preferable to apply (2 ′′) instead of (2) or (2 ′).
- r 1 is the distance between the center of the observation optical system 1 and the center of the narrow-light illumination optical system 2
- r 2 is the center of the observation optical system 1 and the center of the wide-light illumination optical system 3. Distance.
- conditional expression (3) By satisfying conditional expression (3), the brightness of the entire observation range at the time of proximity becomes uniform, and better observation can be performed. If the lower limit of the conditional expression (3) is not reached, only the direction in which illumination with a wide light distribution is arranged is illuminated brightly, and the brightness of the entire observation range is not uniform. Moreover, when the upper limit of conditional expression (3) is exceeded, the brightness of the entire observation range is not preferable. It is more preferable to apply the following conditional expression (3 ′) instead of conditional expression (3). 1.2 ⁇ r 2 / r 1 ⁇ 1.8 (3 ′)
- conditional expressions (4) and (5) Satisfactory observation can be performed by satisfying conditional expressions (4) and (5).
- conditional expressions (4) and (5) the light distribution becomes extremely wide below the lower limit, and the frequency of occurrence of optical defects such as flare and halation increases.
- the upper limit in conditional expressions (4) and (5) is exceeded, the illumination optical system is arranged at a position far from the observation optical system 1 and sufficient light cannot enter the observation range, or the illumination optical systems 2 and 3 The light distribution is too narrow to ensure sufficient brightness.
- conditional expression (6) the angle characteristics of the narrow-angle illumination optical system 2 and the wide-angle illumination optical system 3 satisfy the conditional expression (6). ing.
- conditional expression (6) the light of the illumination optical system 3 located in the distance is sufficiently incident in the observation range at the time of proximity, so that a balanced brightness without unevenness is ensured. be able to.
- ⁇ S (60) is the ratio of the amount of emitted light with respect to the center (exit angle 0 °) at 60 ° of the illumination optical system 2 with the narrowest light distribution
- ⁇ W (60) is the illumination optical system 3 with the widest light distribution. Of the emitted light with respect to the center at 60 ° (exit angle 0 °).
- conditional expression (6 ′) instead of conditional expression (6)
- (6 ′′) instead of (6) or (6 ′).
- the illumination optical system 2 with a narrow light distribution and the illumination optical system 3 with a wide light distribution are provided so that observation can be performed satisfactorily.
- ⁇ S (50) is the ratio of the amount of emitted light with respect to the center (exit angle 0 °) at 50 ° of the illumination optical system 2 with the narrowest light distribution
- ⁇ W (50) is the illumination optical system with the widest light distribution
- 3 is an emitted light amount ratio with respect to the center (exit angle 0 °) at 50 °.
- conditional expressions (7) and (8) If the lower limit of conditional expressions (7) and (8) is not reached, the observation when the distance between the distal end of the insertion portion of the endoscope apparatus and the subject is good is good, but the observation when close is bad. If the upper limit of conditional expressions (7) and (8) is exceeded, on the contrary, the observation at the time of closeness becomes good, but the distance observation is hindered.
- conditional expressions (7 ′) and (8 ′) instead of the conditional expressions (7) and (8). 0.10 ⁇ ⁇ S (50 °) ⁇ 0.20 (7 ′) 0.15 ⁇ ⁇ W (50 °) ⁇ 0.25 (8 ′)
- the illumination window of the wide light distribution illumination optical system 3 is made larger than the illumination window of the narrow light distribution illumination optical system 2, and the wide light distribution illumination optical system 3 is matched to the size of the irradiation window.
- the amount of light emitted from the wide distribution light illumination optical system 3 can be made larger than that of the illumination optical system 2.
- the illumination optical system 3 with wide light distribution is arranged farther than the observation optical system 1, it is possible to sufficiently illuminate the observation target by increasing the amount of light emitted by the illumination optical system 3 with wide light distribution. In other words, a sufficient amount of emitted light is supplied from the illumination optical system 3 arranged far from the observation optical system 1, so that a better observation can be performed when the observation target is arranged at a close position. Can do.
- the illumination window of the narrow light distribution illumination optical system 2 is made larger than the illumination window of the wide light distribution illumination optical system 3, and the wide distribution of the narrow light distribution illumination optical system 2 according to the size of the irradiation window.
- the amount of light emitted from the illumination optical system 2 with narrow light distribution can be made larger than that of the illumination optical system 3.
- FIG. 2 is a cross-sectional view showing an example of the configuration of the observation optical system 1 in the present embodiment.
- the observation optical system 1 includes a concave lens 11, a convex lens 12, an aperture stop S, a cemented lens 13 of a convex lens and a concave lens, a cover glass 14, and a CCD glass 9 in order from the object side.
- FIG. 3 is a cross-sectional view showing an example of the configuration of the wide-angle illumination optical system 3 in the present embodiment.
- the illumination optical system 3 with wide light distribution includes, in order from the object side, a plano-convex lens 15, a biconvex lens 16, a glass rod 17 composed of a core and a clad, and a light that guides emitted light from a light source (not shown).
- a guide 18 is provided. Then, the light emitted from the light guide 18 is reflected by each lens, whereby a constant light distribution can be obtained.
- the illumination optical system various configurations such as a configuration with one convex lens, a simple configuration with one concave lens, and a configuration with two convex lenses can be applied. Since the light distribution becomes narrow when the number of lenses is small, the wide light distribution illumination optical system 3 in this embodiment is configured to include three convex lenses as described above.
- FIG. 4 is a cross-sectional view showing an example of the configuration of the narrow-angle illumination optical system 2 in the present embodiment.
- the narrowly distributed illumination optical system 2 includes a concave lens 19 and a light guide 18 that guides emitted light from a light source (not shown) in order from the object side.
- the narrow light distribution illumination optical system 2 can also be configured to include three convex lenses in the same manner as the wide light distribution illumination optical system 3 described above.
- FIG. 5 shows the light distribution characteristics of the illumination optical system 2.
- a light distribution 8 is provided on a plane 7 that is 70 mm away from the illumination optical system 2.
- the angle ⁇ is taken in the clockwise direction, and the brightness at that angle is ⁇ S. It is defined as (0). Since the light distribution is symmetric, ⁇ may be taken counterclockwise.
- the light distribution characteristic ⁇ W ( ⁇ ) by the illumination optical system 3 can also be considered in the same manner as the light distribution characteristic of the illumination optical system 2 described above.
- FIG. 6 shows the light distribution characteristic ⁇ LG ( ⁇ ) of the light guide 18.
- the illumination optical system 2 having a narrow light distribution is disposed at a position relatively close to the observation optical system 1 and the light amount thereof is reduced, and at the same time, the position is relatively far from the observation optical system 1. Since the illumination optical system 3 having a wide light distribution is disposed and the amount of light is increased, it is possible to ensure a sufficient light distribution and brightness while suppressing flare and halation and to perform a good observation.
- FIG. 7 shows a configuration of the insertion portion distal end 20 in the endoscope apparatus according to the modification of the embodiment of the present invention.
- the endoscope apparatus according to this modification can be configured to include three illumination optical systems 2, 3, and 6 as a plurality of illumination optical systems.
- the same reference numerals are assigned to the same reference numerals as those of the endoscope apparatus according to the above-described embodiment, and the description thereof is omitted.
- the illumination optical system 2 and the illumination optical system 6 are the same illumination optical system, and the light distribution is narrower than that of the illumination optical system 3.
- the narrow light distribution illumination optical systems 2 and 6 are both arranged at the same distance from the observation optical system 1, and the wide light distribution illumination optical system 3 is a narrow light distribution illumination. It is arranged farther from the observation optical system 1 than the optical systems 2 and 6. That is, the illumination optical systems 2 and 6 with narrow light distribution are arranged away from the center of the observation optical system 1 and the illumination optical system 3 with wide light distribution is arranged at r2 away (r1 ⁇ r2).
- the endoscope apparatus is also configured to satisfy the conditional expressions (1) to (8) described above, so that sufficient light distribution and brightness can be achieved while suppressing flare and halation. It is possible to ensure good observation.
- r1 is the distance from the center of the observation optical system to the center of the illumination optical system with narrow light distribution
- r2 is the distance from the center of the observation optical system to the center of the illumination optical system with wide light distribution
- f W is The focal length of the illumination optical system with the widest light distribution
- f S is the focal length of the illumination optical system with the narrowest light distribution
- ⁇ W is the outer diameter of the lens located on the most object side surface of the illumination optical system with the widest light distribution
- ⁇ S is the outer diameter of the lens located closest to the object side of the illumination optical system with the narrowest light distribution
- f L is the focal length of the observation optical system
- ⁇ L is the maximum image height of the observation optical system
- ⁇ S (60 ) Is the ratio of the amount of emitted light to the center at 60 ° (exit angle 0 °) of the illumination optical system with
- ⁇ S (50) is the center (exit) at 50 ° of the illumination optical system with the narrowest light distribution.
- the emission light amount ratio with respect to the angle (0 °), and ⁇ W (50) is the emission light amount ratio with respect to the center (exit angle 0 °) at 50 ° of the illumination optical system with the widest light distribution.
- r is a radius of curvature (unit: mm)
- d is a surface separation (mm)
- Nd is a refractive index with respect to d-line
- ⁇ is an Abbe number.
- the endoscope apparatus includes an observation optical system, and one narrow light distribution illumination optical system and a wide light distribution illumination optical system (see FIG. 1). Lens data of the observation optical system and the illumination optical system according to Example 1 are shown below.
- the endoscope apparatus according to Embodiment 2 of the present invention includes an observation optical system, and one narrow light distribution illumination optical system and a wide light distribution illumination optical system (see FIG. 1). Lens data of the illumination optical system according to Example 2 is shown below. Since the observation optical system according to the present example is the same as the observation optical system according to Example 1, lens data is omitted.
- Example 3 The endoscope apparatus according to Example 3 of the present invention includes an observation optical system, and one narrow light distribution illumination optical system and a wide light distribution illumination optical system (see FIG. 1). Lens data of the illumination optical system according to Example 3 is shown below. Since the observation optical system according to the present example is the same as the observation optical system according to Example 1, lens data is omitted.
- Example 4 The endoscope apparatus according to the fourth embodiment of the present invention includes an observation optical system, two identical narrow light illumination optical systems, and one wide light illumination optical system (see FIG. 7). . Lens data of the observation optical system and the illumination optical system according to Example 4 are shown below.
- the endoscope apparatus includes one narrow light distribution illumination optical system and a wide light distribution illumination optical system.
- Lens data of the illumination optical system according to Example 5 is shown below. Since the observation optical system according to the present example is the same as the observation optical system according to Example 1, lens data is omitted.
- Table 1 shows values related to the conditional expressions (1) to (8) in Examples 1 to 5 described above.
Abstract
Description
本発明の一態様は、内視鏡装置の挿入部の先端に設けられ、観察対象を観察するための観察光学系と、前記挿入部に設けられ、光源から出射された照明光を前記観察対象に配光して同一視野を照明する複数の照明光学系と、を備え、複数の該照明光学系のうち、最も広配光の照明光学系が最も狭配光の照明光学系よりも前記観察光学系からの距離が遠く、以下の条件式を満たす内視鏡装置を提供する。
0.6≦|φSfW/φWfS|≦1.0 ・・・ (1)
但し、fWは最も広配光の照明光学系の焦点距離であり、fSは最も狭配光の照明光学系の焦点距離であり、φWは最も広配光の照明光学系の最も物体側面に位置するレンズの外径であり、φSは最も狭配光の照明光学系の最も物体側面に位置するレンズの外径である。
条件式(1)の上限を超えると、観察光学系に近い方の照明の配光が広くなり、フレアやハレーション等の不具合が発生しやすくなる。その反面、条件式(1)の下限を下回ると、一方の配光が広くなりすぎるため、照明の置いてある方向のみ明るくなってしまい、フレア・ハレーションには強いが、画面の一部のみが明るい、ムラのある照明光学系となってしまう。
0.7≦|φSfW/φWfS|≦0.95 ・・・ (1’)
さらに、以下であるとなお良い。
0.75≦|φSfW/φWfS|≦0.92 ・・・ (1’’)
1.6≦|φSfL/fSφL|≦2.8 ・・・ (2)
但し、fLは観察光学系の焦点距離であり、φLは観察光学系の最大像高である。
1.8≦|φSfL/fSφL|≦2.6 ・・・ (2’)
2.0≦|φSfL/fSφL|≦2.4 ・・・ (2’’)
1.0≦r2/r1≦2.0 ・・・(3)
但し、r1は観察光学系の中心と狭配光の照明光学系中心の距離であり、r2は観察光学系の中心と広配光の照明光学系中心の距離である。
なお、条件式(3)に代えて、以下の条件式(3’)を適用するとより好ましい。
1.2≦r2/r1≦1.8 ・・・ (3’)
12≦r1 2/|fSfW|≦48 ・・・ (4)
24≦r2 2/|fSfW|≦96 ・・・ (5)
一般に、ハレーションの発生を軽減しようとすると、配光不足が発生してしまう虞がある。特に、観察光学系と照明光学系との距離が変化すると、その影響も変化する。従って、照明光学系毎に、当該照明光学系と観察光学系との距離に応じた照明の配光を適切に設定することが好ましい。よって良好な観察を行うためには、条件式(4)及び(5)を満たすことが望ましい。
γW(60)/γS(60)≧1.0 ・・・ (6)
但し、γS(60)は最も狭配光の照明光学系の60°における中心(射出角0°)に対する出射光量比であり、γW(60)は最も広配光の照明光学系の60°における中心(射出角0°)に対する出射光量比である。
なお、条件式(6)に代えて、以下の条件式(6’)を適用するとより好ましく、(6)又は(6’)に代えて(6’’)を適用するとさらに好ましい。
γW(60)/γS(60)≧1.15 ・・・ (6’)
γW(60)/γS(60)≧1.50 ・・・ (6’’)
0.05≦γS(50)≦0.25 ・・・ (7)
0.10≦γW(50)≦0.30 ・・・ (8)
但し、γS(50)は最も狭配光の照明光学系の50°における、中心(射出角0°)に対する出射光量比であり、γW(50)は最も広配光の照明光学系の50°における、中心(射出角0°)に対する出射光量比である。
条件式(7)及び(8)の下限を下回ると、内視鏡装置の挿入部先端と被写体との距離が離れた際の観察が良好になるが、近接時の観察が悪くなってしまう。条件式(7)及び(8)の上限を超えると、反対に、近接時の観察は良好になるが遠方観察に支障をきたしてしまう。
0.10≦γS(50°)≦0.20 ・・・ (7’)
0.15≦γW(50°)≦0.25 ・・・ (8’)
以下に、本発明の実施形態に係る内視鏡装置について図面を参照して説明する。
図1は、本実施形態に係る内視鏡装置の挿入部先端面10を示している。図1に示すように、内視鏡装置はその挿入部先端に、観察対象を観察するための観察光学系1、図示しない光源から出射された照明光を観察対象に配光して同一視野を照明する複数の照明光学系2,3、鉗子等処置具を出没させるためのチャンネル4、観察窓乃至照明窓等のレンズに付着した汚れ等を洗浄するためのノズル5を備えている。
つまり、観察光学系1の中心からr1離れた位置に狭配光の照明光学系2を、r2離れた位置に広配光の照明光学系3を配置している(r1<r2)。
但し、fWは最も広配光の照明光学系3の焦点距離であり、fSは最も狭配光の照明光学系2の焦点距離であり、φWは最も広配光の照明光学系3の最も物体側面に位置するレンズの外径であり、φSは最も狭配光の照明光学系2の最も物体側面に位置するレンズの外径である。
条件式(1)の上限を超えると、観察光学系1に近い方の照明光学系2の配光が広くなり、フレアやハレーション等の不具合が発生しやすくなる。その反面、条件式(1)の下限を下回ると、一方の配光が広くなりすぎるため、照明の置いてある方向のみ明るくなってしまい、フレア・ハレーションには強いが、画面の一部のみが明るい、ムラのある照明光学系となってしまう。
0.7≦|φSfW/φWfS|≦0.95 ・・・ (1’)
さらに、以下であるとなお良い。
0.75≦|φSfW/φWfS|≦0.92 ・・・ (1’’)
但し、fLは観察光学系1の焦点距離であり、φLは観察光学系1の最大像高である。
1.8≦|φSfL/fSφL|≦2.6 ・・・ (2’)
2.0≦|φSfL/fSφL|≦2.4 ・・・ (2’’)
但し、r1は観察光学系1の中心と狭配光の照明光学系2の中心との距離であり、r2は観察光学系1の中心と広配光の照明光学系3の中心との距離である。
なお、条件式(3)に代えて、以下の条件式(3’)を適用するとより好ましい。
1.2≦r2/r1≦1.8 ・・・ (3’)
24≦r2 2/|fSfW|≦96 ・・・ (5)
但し、γS(60)は最も狭配光の照明光学系2の60°における中心(射出角0°)に対する出射光量比であり、γW(60)は最も広配光の照明光学系3の60°における中心(射出角0°)に対する出射光量比である。
γW(60)/γS(60)≧1.15 ・・・ (6’)
γW(60)/γS(60)≧1.50 ・・・ (6’’)
0.05≦γS(50)≦0.25 ・・・ (7)
0.10≦γW(50)≦0.30 ・・・ (8)
但し、γS(50)は最も狭配光の照明光学系2の50°における、中心(射出角0°)に対する出射光量比であり、γW(50)は最も広配光の照明光学系3の50°における、中心(射出角0°)に対する出射光量比である。
0.10≦γS(50°)≦0.20 ・・・ (7’)
0.15≦γW(50°)≦0.25 ・・・ (8’)
このようにすることで、遠景時の明るさが有利となり、より遠くまで十分な明るさが得られやすくなる。
図2に示すように、観察光学系1は、物体側から順に、凹レンズ11、凸レンズ12、明るさ絞りS、凸レンズと凹レンズの接合レンズ13、カバーガラス14、CCDガラス9を備えている。
図3に示すように、広配光の照明光学系3は、物体側から順に、平凸レンズ15、両凸レンズ16、コアとクラッドからなるガラスロッド17、及び図示しない光源からの出射光を導くライトガイド18を備えている。そして、ライトガイド18より出射された光を、各々のレンズで反射させることにより、一定の配光を得られる構成となっている。
なお、狭配光の照明光学系2においても、上述した広配光の照明光学系3と同様に3枚の凸レンズを備える構成とすることもできる。
照明光学系2より距離70mm離れた平面7に対して、配光分布8を有している。このとき、図5において、紙面上方向を0°とした時、0°位置における明るさをγS(0)=1とし、時計周り方向に角度αを取り、その角度における明るさをγS(0)と定義する。なお、配光分布は対称であるため、半時計周りにαをとってもよい。また、照明光学系3による配光特性γW(α)も、上記した照明光学系2の配光特性と同様に考えることができる。
また、図6に、ライトガイド18の配光特性γLG(α)を示す。
図7は、本発明の実施形態の変形例に係る内視鏡装置における挿入部先端20の構成を示している。図7に示すように、本変形例に係る内視鏡装置は複数の照明光学系として3つの照明光学系2,3,6を備える構成とすることができる。本変形例に係る内視鏡装置において、上記した実施形態に係る内視鏡装置と同一の符号には同一の符号を付し、その説明を省略する。
また、各実施例に記載のレンズデータにおいて、rは曲率半径(単位mm)、dは面間隔(mm)、Ndはd線に対する屈折率、νはアッベ数を示している。
本発明の実施例1に係る内視鏡装置は、観察光学系と、夫々1つの狭配光の照明光学系と広配光の照明光学系とを備えている(図1参照)。
実施例1に係る観察光学系及び照明光学系のレンズデータを以下に示す。
レンズデータ
面番号 r d Nd ν
1 ∞ 0.339 1.883 40.8
2 0.642 0.390 1.670 47.3
3 3.205 1.656 1.729 54.7
4 -1.170 0.050 1.923 18.9
5 ∞ 0.318 1.516 64.1
6 3.361 1.300 1.505 63.3
7 -1.124 0.299
8 -4.202 0.935
9 ∞ 0.600
10 ∞ 0.500
fL 0.99
φL 1.00
レンズデータ
面番号 r d Nd
1 ∞ 1.3 1.883
2 -2.00 0.04 1.883
3 2.00 0.75 1.730
4 -2.00 0.05 1.520
5 1.91 2.9
6 ∞
fS 0.72
φS 1.6
γS(60) 0.053
γS(50) 0.17
ライトガイド径φLG 1.38
r1 3.4
レンズデータ
面番号 r d Nd
1 ∞ 1.6 1.883
2 -1.53 0.06 1.883
3 3.97 0.74 1.730
4 -1.90 0.12 1.520
5 3.62 3.4
6 ∞
fW 0.83
φW 2.05
γW(60) 0.062
γW(50) 0.18
ライトガイド径φLG 1.60
r2 4.5
本発明の実施例2に係る内視鏡装置は、観察光学系と、夫々1つの狭配光の照明光学系と広配光の照明光学系とを備えている(図1参照)。
実施例2に係る照明光学系のレンズデータを以下に示す。
なお、本実施例に係る観察光学系は実施例1における観察光学系と同一であるのでレンズデータを省略する。
レンズデータ
面番号 r d Nd
1 ∞ 0.36 1.883
2 0.76 0.30
fS -0.86
φs 1.60
γS(60) 0.025
γS(50) 0.11
ライトガイド径φLG 1.20
r1 3.2
レンズデータ
面番号 r d Nd
1 ∞ 1.3 1.883
2 -2.00 0.04 1.883
3 2.00 0.75 1.730
4 -2.00 0.05 1.520
5 1.91 2.9
6 ∞
fW 0.72
φW 1.6
γW(60) 0.053
γW(50) 0.17
ライトガイド径φLG 1.38
r2 4.1
本発明の実施例3に係る内視鏡装置は、観察光学系と、夫々1つの狭配光の照明光学系と広配光の照明光学系とを備えている(図1参照)。
実施例3に係る照明光学系のレンズデータを以下に示す。
なお、本実施例に係る観察光学系は実施例1における観察光学系と同一であるのでレンズデータを省略する。
レンズデータ
面番号 r d Nd
1 ∞ 1.72 1.883
2 -2.76 0.06 1.883
3 3.97 0.74 1.730
4 -1.90 0.12 1.520
5 3.62 3.4
6 ∞
fS 0.97
φS 1.95
γS(60) 0.05
γS(50) 0.16
ライトガイド径φLG 1.80
r1 3.8
レンズデータ
面番号 r d Nd
1 ∞ 1.11 1.883
2 -1.01 0.04 1.883
3 1.20 0.65 1.805
4 ∞ 0 1.520
5 1.26 2.75
6 ∞
fW 0.54
φW 1.2
γW(60) 0.053
γW(50) 0.18
ライトガイド径φLG 1.10
r2 4.6
本発明の実施例4に係る内視鏡装置は、観察光学系と、2つの同一の狭配光の照明光学系と1つの広配光の照明光学系とを備えている(図7参照)。
実施例4に係る観察光学系及び照明光学系のレンズデータを以下に示す。
レンズデータ
面番号 r d Nd ν
1 ∞ 0.291 1.883 40.8
2 0.648 0.516 1.652 58.5
3 2.138 1.549 1.589 61.2
4 -1.213 0.050 1.923 18.9
5 ∞ 0.402 1.516 64.1
6 1.643 1.097 1.505 63.3
7 -1.013 0.299
8 -4.783 0.573
9 ∞ 0.500
10 ∞ 0.400
fL 0.91
φL 0.85
レンズデータ
面番号 r d Nd
1 ∞ 1.11 1.883
2 -1.01 0.04 1.883
3 1.20 0.65 1.805
4 ∞ 0 1.520
5 1.26 2.75
6 ∞
fS 0.54
φs 1.2
γS(60) 0.053
γS(50) 0.18
ライトガイド径φLG 1.10
r1 3.2
レンズデータ
面番号 r d Nd
1 ∞ 1.3 1.883
2 -2.00 0.04 1.883
3 2.00 0.75 1.730
4 -2.00 0.05 1.520
5 1.91 2.9
6 ∞
fW 0.63
φW 1.2
γW(60) 0.081
γW(50) 0.22
ライトガイド径φLG 1.38
r2 5.3
本発明の実施例5に係る内視鏡装置は、夫々1つの狭配光の照明光学系と広配光の照明光学系とを備えている。
実施例5に係る照明光学系のレンズデータを以下に示す。
なお、本実施例に係る観察光学系は実施例1における観察光学系と同一であるのでレンズデータを省略する。
レンズデータ
面番号 r d Nd
1 ∞ 0.36 1.883
2 0.76 0.30
fS -0.86
φS 1.60
γS(60) 0.025
γS(50) 0.11
ライトガイド径φLG 1.20
r1 4.0
レンズデータ
面番号 r d Nd
1 ∞ 1.3 1.883
2 -2.00 0.04 1.883
3 2.00 0.75 1.730
4 -2.00 0.05 1.520
5 1.91 2.9
6 ∞
fW 0.63
φW 1.2
γW(60) 0.081
γW(50) 0.22
ライトガイド径φLG 1.38
r2 5.8
2 狭配光の照明光学系
3 広配光の照明光学系
4 チャンネル
5 ノズル
6 狭配光の照明光学系
10 内視鏡挿入部先端面
Claims (8)
- 内視鏡装置の挿入部の先端に設けられ、観察対象を観察するための観察光学系と、
前記挿入部に設けられ、光源から出射された照明光を前記観察対象に配光して同一視野を照明する複数の照明光学系と、を備え、
複数の該照明光学系のうち、最も広配光の照明光学系が最も狭配光の照明光学系よりも前記観察光学系からの距離が遠く、以下の条件式を満たす内視鏡装置。
0.6≦|φSfW/φWfS|≦1.0 ・・・ (1)
但し、fWは最も広配光の照明光学系の焦点距離であり、fSは最も狭配光の照明光学系の焦点距離であり、φWは最も広配光の照明光学系の最も物体側面に位置するレンズの外径であり、φSは最も狭配光の照明光学系の最も物体側面に位置するレンズの外径である。 - 以下の条件式を満たす請求項1記載の内視鏡装置。
1.6≦|φSfL/fSφL|≦2.8 ・・・ (2)
但し、fLは観察光学系の焦点距離であり、φLは観察光学系の最大像高である。 - 以下の条件式を満たす請求項1又は請求項2記載の内視鏡装置。
1.0≦r2/r1≦2.0 ・・・(3)
但し、r1は観察光学系の中心と狭配光照明光学系中心の距離であり、r2は観察光学系の中心と広配光照明光学系中心の距離である。 - 以下の条件式を満たす請求項3記載の内視鏡装置。
12≦r1 2/|fSfW|≦48 ・・・ (4)
24≦r2 2/|fSfW|≦96 ・・・ (5) - 最も狭配光の前記照明光学系及び最も広配光の前記照明光学系の角度特性が、以下の条件式を満たす請求項4記載の内視鏡装置。
γW(60)/γS(60)≧1.0 ・・・ (6)
但し、γS(60)は最も狭配光の照明光学系の60°における中心(射出角0°)に対する出射光量比であり、γW(60)は最も広配光の照明光学系の60°における中心(射出角0°)に対する出射光量比である。 - 最も狭配光の前記照明光学系及び最も広配光の前記照明光学系の角度特性が、以下の条件式を満たす請求項5記載の内視鏡装置。
0.05≦γS(50)≦0.25 ・・・ (7)
0.10≦γW(50)≦0.30 ・・・ (8)
但し、γS(50)は最も狭配光の照明光学系の50°における、中心(射出角0°)に対する出射光量比であり、γW(50)は最も広配光の照明光学系の50°における、中心(射出角0°)に対する出射光量比である。 - 複数の前記照明光学系のうち、最も広配光の照明光学系が最も狭配光の照明光学系よりも出射光量が大きく、前記観察光学系からの距離が遠い請求項1乃至請求項6の何れか1項記載の内視鏡装置。
- 複数の前記照明光学系のうち、最も広配光の照明光学系が最も狭配光の照明光学系よりも出射光量が小さく、前記観察光学系からの距離が遠い請求項1乃至請求項6の何れか1項記載の内視鏡装置。
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US15/234,566 Continuation US9757017B2 (en) | 2014-08-22 | 2016-08-11 | Endoscope provided with a plurality of illumination optical systems |
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EP (1) | EP3184022A4 (ja) |
JP (1) | JP5942063B1 (ja) |
CN (1) | CN106028901B (ja) |
WO (1) | WO2016027634A1 (ja) |
Cited By (1)
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WO2018143381A1 (ja) * | 2017-02-02 | 2018-08-09 | オリンパス株式会社 | 内視鏡 |
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WO2015107844A1 (ja) * | 2014-01-15 | 2015-07-23 | オリンパス株式会社 | 内視鏡装置 |
EP3205253B1 (en) * | 2014-10-06 | 2019-05-15 | Olympus Corporation | Endoscope |
KR102006859B1 (ko) * | 2017-06-20 | 2019-10-01 | 한국과학기술연구원 | 내시경 카테터 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012047909A (ja) * | 2010-08-25 | 2012-03-08 | Olympus Corp | 内視鏡用結像光学系及びそれを備えた内視鏡 |
JP2012196307A (ja) * | 2011-03-22 | 2012-10-18 | Fujifilm Corp | 内視鏡システム及びその操作補助方法 |
WO2013080831A1 (ja) * | 2011-12-01 | 2013-06-06 | オリンパスメディカルシステムズ株式会社 | 内視鏡装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001166223A (ja) | 1999-12-03 | 2001-06-22 | Olympus Optical Co Ltd | 内視鏡 |
JP4554267B2 (ja) * | 2004-04-27 | 2010-09-29 | オリンパス株式会社 | 内視鏡及び内視鏡システム |
JP4727959B2 (ja) * | 2004-09-03 | 2011-07-20 | オリンパス株式会社 | 内視鏡先端部光学系 |
JP4869096B2 (ja) | 2006-02-14 | 2012-02-01 | 富士フイルム株式会社 | 内視鏡用対物レンズ |
JP4668831B2 (ja) * | 2006-04-24 | 2011-04-13 | オリンパスメディカルシステムズ株式会社 | 内視鏡 |
JP2009022375A (ja) * | 2007-07-17 | 2009-02-05 | Hoya Corp | 電子内視鏡システム |
JP5075658B2 (ja) | 2008-02-08 | 2012-11-21 | 富士フイルム株式会社 | 内視鏡 |
CN103562770B (zh) * | 2012-01-13 | 2016-06-29 | 奥林巴斯株式会社 | 内窥镜顶端部件及内窥镜 |
CN104883953B (zh) * | 2013-05-22 | 2016-08-24 | 奥林巴斯株式会社 | 内窥镜 |
WO2015107844A1 (ja) * | 2014-01-15 | 2015-07-23 | オリンパス株式会社 | 内視鏡装置 |
WO2015156337A1 (ja) * | 2014-04-10 | 2015-10-15 | オリンパス株式会社 | 内視鏡 |
EP3205253B1 (en) * | 2014-10-06 | 2019-05-15 | Olympus Corporation | Endoscope |
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2015
- 2015-07-29 CN CN201580009104.1A patent/CN106028901B/zh active Active
- 2015-07-29 WO PCT/JP2015/071556 patent/WO2016027634A1/ja active Application Filing
- 2015-07-29 EP EP15834161.0A patent/EP3184022A4/en not_active Withdrawn
- 2015-07-29 JP JP2016506025A patent/JP5942063B1/ja active Active
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2016
- 2016-08-11 US US15/234,566 patent/US9757017B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012047909A (ja) * | 2010-08-25 | 2012-03-08 | Olympus Corp | 内視鏡用結像光学系及びそれを備えた内視鏡 |
JP2012196307A (ja) * | 2011-03-22 | 2012-10-18 | Fujifilm Corp | 内視鏡システム及びその操作補助方法 |
WO2013080831A1 (ja) * | 2011-12-01 | 2013-06-06 | オリンパスメディカルシステムズ株式会社 | 内視鏡装置 |
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---|
See also references of EP3184022A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018143381A1 (ja) * | 2017-02-02 | 2018-08-09 | オリンパス株式会社 | 内視鏡 |
JP6417498B1 (ja) * | 2017-02-02 | 2018-11-07 | オリンパス株式会社 | 内視鏡 |
Also Published As
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US20160345811A1 (en) | 2016-12-01 |
EP3184022A4 (en) | 2018-05-16 |
JP5942063B1 (ja) | 2016-06-29 |
US9757017B2 (en) | 2017-09-12 |
CN106028901A (zh) | 2016-10-12 |
EP3184022A1 (en) | 2017-06-28 |
JPWO2016027634A1 (ja) | 2017-04-27 |
CN106028901B (zh) | 2018-01-19 |
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