WO2011007461A1 - 開口絞り - Google Patents
開口絞り Download PDFInfo
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- WO2011007461A1 WO2011007461A1 PCT/JP2009/067352 JP2009067352W WO2011007461A1 WO 2011007461 A1 WO2011007461 A1 WO 2011007461A1 JP 2009067352 W JP2009067352 W JP 2009067352W WO 2011007461 A1 WO2011007461 A1 WO 2011007461A1
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- WIPO (PCT)
- Prior art keywords
- light
- region
- subject
- fluorescence
- observation
- Prior art date
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
- G03B9/06—Two or more co-operating pivoted blades, e.g. iris type
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/11—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths for generating image signals from visible and infrared light wavelengths
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
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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
Definitions
- the present invention when the amount of fluorescent light from the observation region of the subject is weak compared to the illumination light that illuminates the subject, an observation image with weak fluorescence and a subject image with strong illumination light are simultaneously captured clearly.
- the present invention relates to an aperture stop used for the purpose.
- PDD photodynamic diagnosis
- PDT photodynamic therapy
- PDD and PDT require that fluorescence emitted from a photosensitive substance in a tumor tissue be photographed with high precision and observed under strong illumination light such as an operating room operating light. Since the fluorescence emitted from the substance is extremely weak compared to the illumination light, there is a problem that the fluorescence image is buried in the subject image by the illumination light.
- ICG Indocyanine Green
- the ICG is excited by irradiation of excitation light, etc., and a near-infrared fluorescent image emitted from the ICG is taken together with a subject image and observed. Therefore, attention has been paid to a method for making a diagnosis.
- Hemoglobin absorbs at wavelengths shorter than 600 nm, and water absorbs at wavelengths longer than 900 nm.
- the excitation wavelength of ICG and the wavelength of fluorescence emitted by ICG are 600 to 900 nm without absorption of hemoglobin and water, respectively. Since it is in the wavelength band, the inside of the living body can be observed by using ICG.
- this method also has a problem that the fluorescent image is buried in the subject image.
- Patent Document 2 when illuminating a subject using an illumination device including excitation light and illumination light, and simultaneously observing the observation image due to weak fluorescence emitted from the observation site in the subject and the subject image due to reflected light from the subject, the excitation light component And adjusting the intensity of illumination light component and controlling the luminance value and contrast of the observation image and the subject image (Patent Document 2).
- an illuminating device is used not for endoscopic observation but for observation of tissue exposed to strong illumination light in an operating room or the like, it is necessary to greatly reduce the illumination light component. The problem arises that the room must be darkened.
- an optical filter that cuts excitation light and transmits infrared light and visible light is used.
- the light transmittance is different between infrared light and visible light to balance the infrared light image and the visible light image (Patent Document 3).
- the fluorescence in the infrared light band that forms the observation image with respect to the illumination light in the visible light band that forms the subject image is extremely weak, the transmittance in the infrared light band and the transmittance in the visible light band It is difficult to obtain an optical filter that is adjusted in a well-balanced manner.
- the focal planes of the fluorescence in the infrared light band that forms the observation image and the light in the visible light band that forms the object image are different, the observation image and the object image cannot be captured clearly simultaneously.
- the filter diaphragm is divided into three concentric circles, the innermost side being a circular visible light transmission part, the outer side being a visible light non-transmission part, and the outermost side being It has been proposed to use a light-shielding part, thereby brightening a fluorescent image with respect to a visible light image so that the visible light image can be observed at a deep subject depth (Patent Document 4).
- Patent Document 4 a light-shielding part
- the present invention provides a simple method for illumination when the fluorescence from the observation site of the subject is weak compared to the illumination light that forms the subject image and the intensity of the illumination light varies depending on the observation situation. It is an object of the present invention to clearly obtain both an object image by light and an observation image by fluorescence from an observation site of the object.
- the present inventors function as an aperture stop with a variable opening for light in the wavelength range corresponding to the illumination light, but transmit the light in the wavelength range corresponding to the fluorescence from the observation site of the subject without being reduced. It has been found that the above-described problems can be solved by using an aperture stop.
- the present invention includes a plurality of diaphragm blade members each having a filter portion formed partly or entirely, a filter region formed from the filter portions of the plurality of diaphragm blade members, and an opening region located inside the filter region,
- An aperture stop having The filter region transmits light in a wavelength region corresponding to fluorescence from the observation site of the subject, and reduces or blocks transmission of light in a wavelength region corresponding to illumination light to the subject,
- the aperture region transmits light in a wavelength region corresponding to fluorescence from the observation site of the subject and light in a wavelength region corresponding to illumination light to the subject,
- an aperture stop in which light in a wavelength region corresponding to fluorescence from an observation site of a subject is not focused and the area of the aperture region is variable.
- the present invention also provides an imaging apparatus that captures both an observation image by fluorescence from an observation site of a subject and a subject image by illumination light, and includes the above-described aperture stop.
- the present invention provides an imaging apparatus that simultaneously observes an observation image by fluorescence from an observation site of a subject and a subject image by illumination light, and includes the above-described aperture stop.
- the aperture stop of the present invention inside the filter region that transmits light in the wavelength region corresponding to the fluorescence from the observation site of the subject and reduces or blocks light in the wavelength region corresponding to the illumination light to the subject. Since the aperture region is formed, only the light in the wavelength region of the illumination light that forms the subject image is narrowed down without reducing the fluorescence from the observation site of the subject. For this reason, even when the amount of light in the wavelength range of the illumination light that forms the subject image is overwhelmingly large compared to the weak fluorescence from the observation site of the subject, the subject image caused by the illumination light has weak fluorescence. It is possible to clearly observe an observation image with weak fluorescence without burying the observation image.
- the light that forms the subject image by the illumination light is stopped in the aperture region. Therefore, according to the imaging device including the aperture stop of the present invention, the depth of focus becomes deep for the light in the wavelength region corresponding to the illumination light. For this reason, in the imaging apparatus having the aperture stop according to the present invention, when the focus is adjusted to the observation image by fluorescence, the light forming the subject image and the fluorescence forming the observation image have different wavelengths. A subject image can be clearly obtained even though the surface is shifted.
- the aperture stop of the present invention since the area of the aperture region is variable, it is more appropriate to adjust the balance of the light amount and the depth of focus for the light forming the subject image and the fluorescence forming the observation image. Can be done.
- the aperture stop of the present invention can obtain the above-described effects with a simple configuration. Therefore, according to the imaging device of the present invention having the aperture stop of the present invention, both a subject image by illumination light and an observation image by fluorescence from the observation site of the subject can be obtained clearly and at low cost. .
- FIG. 1A and 1B are a plan view and a cross-sectional view for explaining the operation of a two-blade aperture stop 10A according to an embodiment of the present invention.
- FIG. 2 is a plan view of a diaphragm blade member 20A constituting the two-blade type aperture diaphragm 10A according to the embodiment of the present invention.
- FIG. 3 is a plan view and a cross-sectional view of the two-blade aperture stop 10B according to the embodiment of the present invention.
- FIG. 4 is a plan view of a diaphragm blade member 20C constituting the two-blade aperture stop according to the embodiment of the present invention.
- FIG. 5 is a plan view of a diaphragm blade member 20D constituting the two-blade type aperture diaphragm according to the embodiment of the present invention.
- FIG. 6 is a plan view and a cross-sectional view of the two-blade aperture stop 10E according to the embodiment of the present invention.
- FIG. 7 is a plan view and a cross-sectional view of the two-blade aperture stop 10F according to the embodiment of the present invention.
- FIG. 8 is a schematic configuration diagram of an imaging apparatus 100A according to the embodiment of the present invention.
- FIG. 9 is a schematic configuration diagram of the imaging apparatus 100B according to the embodiment of the present invention.
- FIG. 10 is a schematic configuration diagram of an endoscope imaging apparatus 100C according to the embodiment of the present invention.
- FIG. 11 is a schematic configuration diagram of an endoscope observation apparatus 100D according to the embodiment of the present invention.
- FIG. 1 is an explanatory view of a two-blade type aperture stop 10A which is an embodiment of the aperture stop of the present invention.
- FIG. 2 shows a pair of stop blade members 20A constituting the two-blade type aperture stop 10A. It is a top view.
- the diaphragm blade member 20A has a filter part 21 in which a filter layer 21a is formed on the left and right sides of the surface of a rectangular flat substrate 23, and a non-filter part 22 that is a non-formation region of the filter layer 21a. It is fitted in.
- the filter layer 21a has a shape in which the non-filter part 22 side is recessed in a V shape.
- This filter layer 21a transmits the light in the fluorescent wavelength region from the observation site of the subject without being substantially attenuated, and has a light transmission characteristic that reduces or blocks the light in the wavelength region of the illumination light to the subject. Have.
- the two-blade type aperture stop 10A shown in FIG. 1 is constructed by combining a pair of stop blade members 20A so that both non-filter portions 22 overlap and movably mounted on a rail 25.
- the overlapping region of the non-filter portion 22 of the pair of diaphragm blade members 20A becomes the opening region 2 of the two-blade type aperture stop 10A.
- the pair of filter portions 21 surrounding the opening region 2 becomes the filter region 1 of the two-blade type aperture stop 10A, transmits light in the fluorescent wavelength region from the observation region of the subject, and illuminates the subject. Reduce or block light in the wavelength range of.
- the area of the opening region 2 is variable.
- FIG. 1A the state where the opening region 2 is maximized
- FIG. The area of the opening region 2 can be continuously changed between the state in which the opening region 2 is narrowed down and the state in which the opening region 2 is further narrowed down as shown in FIG. Therefore, it is possible to appropriately adjust the balance between the light that forms the subject image and the amount of fluorescent light that forms the observation image, and the depth of focus.
- a broken-line circle X around the aperture region 2 indicates the maximum area of the optical path at the mounting position when the two-blade aperture stop 10A is mounted on an optical system such as an imaging device.
- the filter region 1 in the two-blade type aperture stop 10A is always larger than the maximum region indicated by the broken-line circle X regardless of the size of the aperture in the aperture region 2, The effective diameter of fluorescence cannot be reduced. Therefore, in the two-blade type aperture stop 10A, it is possible to always use the maximum fluorescence from the observation site of the subject.
- the wavelength range of the fluorescence and the wavelength range of the illumination light can be appropriately determined according to the type of the subject to be observed, the photosensitive substance, the photocontrast agent, the observation purpose, and the like.
- the accumulation site is used as an observation site, and fluorescence is emitted by irradiating ICG with excitation light, and the fluorescence is observed
- the peak of the excitation wavelength of ICG is 805 nm
- the peak of the fluorescence wavelength of ICG is 845 nm
- Light of 810 to 1000 nm including the wavelength band is transmitted, but light of 400 to 810 nm on the shorter wavelength side is preferably reduced or blocked.
- the light transmission characteristics of the two-blade aperture stop 10A are set in this way, light in the wavelength region of the excitation light passes through the aperture region 2, so that when the two-blade aperture stop 10A is used, 750 is used. It is preferable to use together an excitation light cut filter that blocks light of ⁇ 810 nm.
- the above-described filter layer 21a is formed on one surface of the flat substrate 23 and the other surface of the flat substrate 23 is formed.
- An excitation light cut filter layer 5 that blocks light of 750 to 810 nm may be formed on the entire surface.
- HpD hematoporphyrin derivative
- the filter region 1 transmits light having a wavelength of 610 to 720 nm, which is the fluorescent wavelength region, but blocks or reduces visible light having a shorter wavelength than the fluorescent wavelength region and infrared light having a longer wavelength. Those that block light on the shorter wavelength side and longer wavelength side than the fluorescent wavelength region are more preferable.
- the filter unit 21 is formed by vapor deposition of a thin film on the flat substrate 23 or the like.
- the flat substrate 23 is formed of a transparent glass plate, a plastic resin plate, or the like.
- the pair of diaphragm blade members 20A when combining the pair of diaphragm blade members 20A so that the two non-filter portions 22 overlap each other, the pair of diaphragm blade members 20A, It is desirable to place them as close as possible.
- a pair of aperture blade members 20A may be connected by a known connector so that the pair of aperture blade members 20A move symmetrically about the center p of the opening region 2.
- the drive source of the diaphragm blade member 20A may be manual or a stepping motor or the like.
- the aperture stop of the present invention can take various modes.
- the V-shaped opening angle ⁇ and the V-shaped depth d of the filter portion 21 are determined by the overlapping of the pair of non-filter portions 22. There is no particular limitation as long as it is formed.
- the filter portion 21 is recessed in a V shape on the non-filter portion 22 side.
- the filter portion 21 is recessed as long as the opening region 2 can be formed by overlapping the pair of non-filter portions 22.
- the opening region 2 is not particularly limited, and the opening region 2 is formed in a state in which the area of the opening region 2 is narrowed by denting the tip of the V-shaped recess in a semicircular shape like the diaphragm blade member 20C shown in FIG. May be circular.
- the planar shape itself of the flat substrate 23 that forms the diaphragm blade member 20E has a concave shape like the filter portion 21, and this flat substrate. All of 23 may be used as the filter portion 21, or, as in the diaphragm blade member 20F of the two-blade type aperture diaphragm 10F shown in FIG. May use the thing which has the light transmission characteristic similar to the filter layer 21a, and may form the opening area
- a part of the flat substrate 23 is used as the filter portion 21, and the non-filter portion 22 of the flat substrate 23 is adjacent to one side of the filter substrate 21, thereby making the maximum of the optical path indicated by the broken line.
- the total thickness of the diaphragm blade member 20A in the optical axis direction in the filter region 1 and the total thickness of the diaphragm blade member 20A in the optical axis direction in the aperture region 2 are the same, and the fluorescence transmitted through the filter region 1 and the aperture region It is preferable not to cause a phase difference between the fluorescent light passing through 2. Thereby, an observation image can be formed more clearly.
- the aperture stop of the present invention can take various modes.
- a filter region and an opening region located inside the filter region may be formed by combining three or more aperture blade members having a filter part and a non-filter part.
- the total thickness of the diaphragm blade member in the optical axis direction in the filter region and the total thickness of the diaphragm blade member in the optical axis direction in the aperture region are the same within the maximum range of the optical path in the aperture stop. .
- the aperture stop according to the present invention can be widely used in various imaging devices that simultaneously capture a subject image by illumination light and an observation image by fluorescence from the observation site of the subject, thereby forming light that forms the subject image. On the other hand, even when the fluorescence forming the observation image is weak, both the subject image and the observation image can be clearly obtained.
- FIG. 8 is a schematic configuration diagram of an example of an imaging apparatus 100A in which the aperture stop 10 of the present invention is incorporated into a known handy type near-infrared fluorescent imaging apparatus using ICG.
- This imaging device 100A takes a subject image by visible light with a living body as a subject S, and simultaneously takes an infrared image fluorescence image emitted by ICG administered to a living tissue as an observation image. 102, a monitor 103, and the like.
- the camera unit 101 has a near infrared wavelength LED excitation light source 104 as an auxiliary light source for exciting the ICG on the front side of the subject, and a CCD 105 having sensitivity in the near infrared light band and visible light band inside, A lens system 106 for forming an image on the CCD 105 is provided, and an excitation light cut filter 50 is provided in front of the lens system 106. Also, in the lens system 106, for example, a two-blade type aperture stop 10A is installed as the aperture stop 10 of the present invention. In addition, as the aperture stop 10 of the present invention, the above-described various aspects can be installed, and in the case where the one having the excitation light cut filter layer 5 formed therein is installed, the excitation light cut The filter 50 is not necessary.
- the controller 102 has an image processing function for adjusting the contrast of an image captured by the CCD 105 and removing noise. Also, it has a function of outputting image data to the monitor 103 and outputting the subject image and the observation image to the monitor 103 at the same time, or outputting image data to be connected to an external recording device, communication device, etc. as necessary. ing.
- ICG is administered to a predetermined part of a patient to be the subject S in advance, the subject S is imaged under the illumination light L1 from the external illumination device 110 such as a surgical light, and the illumination light is obtained.
- a subject image by L1 and an observation image by ICG fluorescence are simultaneously imaged, and a composite image thereof is output to the monitor 103 to be used for diagnosis of the subject S.
- the illumination light from the external illumination device 110 is preferably white light (particularly, an observation image is formed by using a fluorescent lamp, a halogen lamp, a xenon lamp, an LED or the like as a light source and cutting light in the infrared light band.
- White light obtained by cutting light in a wavelength region of 810 nm or more.
- the sensitivity and focus of the imaging apparatus 100A are adjusted based on the fluorescence intensity from the observation site.
- the opening degree of the opening region 2 of the aperture stop 10 is adjusted as appropriate.
- an imaging apparatus incorporating the aperture stop of the present invention As an imaging apparatus incorporating the aperture stop of the present invention, light in a wavelength region corresponding to fluorescence from the observation region of the subject is transmitted through the front surface of the lens system 106 as in the imaging apparatus 100B shown in FIG.
- An ND filter 40 that reduces or blocks transmission of light in a wavelength range corresponding to the illumination light of the subject may be provided.
- the aperture stop 10 of the present invention if the area of the aperture region 2 is excessively reduced, the subject image deteriorates. Therefore, only the aperture stop 10 of the present invention cannot sufficiently reduce the visible light that forms the subject image.
- the ND filter 40 that transmits light in the wavelength region corresponding to the fluorescence from the observation region of the subject and reduces or blocks transmission of light in the wavelength region corresponding to the illumination light of the subject is the aperture stop 10 of the present invention.
- the light that forms the subject image can be sufficiently reduced, and both the observation image by fluorescence and the subject image can be clearly photographed.
- FIG. 10 is a schematic configuration diagram of a fiber endoscope imaging apparatus 100C incorporating the aperture stop 10 of the present invention.
- reference numeral 107 denotes an optical fiber.
- FIG. 11 is a schematic configuration diagram of a relay lens type endoscope observation apparatus 100D incorporating the aperture stop 10 of the present invention.
- reference numeral 108 denotes a relay lens.
- This observation apparatus 100D can also be provided with a known illumination optical system (not shown). Also in the observation apparatus, an ND filter and an excitation light cut filter can be provided as necessary as described above.
- the present invention also includes these devices incorporating the aperture stop of the present invention.
- the aperture stop of the present invention is useful in fluorescent imaging devices using fluorescent reagents such as ICG, imaging devices in the medical field such as PDD and PDT, and when taking fluorescent images in analysis tests of foods and various materials. Is also useful.
Abstract
Description
フィルタ領域が、被写体の観察部位からの蛍光に対応する波長域の光を透過させ、被写体への照明光に対応する波長域の光の透過を低減又は遮断し、
開口領域が、被写体の観察部位からの蛍光に対応する波長域の光と、被写体への照明光に対応する波長域の光を透過させ、
被写体の観察部位からの蛍光に対応する波長域の光が絞られず、開口領域の面積が可変である開口絞りを提供する。
図2は、本発明の実施例の2枚羽根型開口絞り10Aを構成する絞り羽根部材20Aの平面図である。
図3は、本発明の実施例の2枚羽根型開口絞り10Bの平面図及び断面図である。
図4は、本発明の実施例の2枚羽根型開口絞りを構成する絞り羽根部材20Cの平面図である。
図5は、本発明の実施例の2枚羽根型開口絞りを構成する絞り羽根部材20Dの平面図である。
図6は、本発明の実施例の2枚羽根型開口絞り10Eの平面図及び断面図である。
図7は、本発明の実施例の2枚羽根型開口絞り10Fの平面図及び断面図である。
図8は、本発明の実施例の撮像装置100Aの概略構成図である。
図9は、本発明の実施例の撮像装置100Bの概略構成図である。
図10は、本発明の実施例の内視鏡撮像装置100Cの概略構成図である。
図11は、本発明の実施例の内視鏡観察装置100Dの概略構成図である。
1a…フィルタ層
2…開口領域
3…平板状基材
3b…レンズ
4…外枠
5…励起光カットフィルタ層
10、10A、10B、10E、10F…2枚羽根型開口絞り
20A、20B、20C、20D、20E、20F…絞り羽根部材
21…フィルタ部
21a…フィルタ層
22…非フィルタ部
23…平板状基材
24…外枠
25…レール
40…NDフィルタ
50…励起光カットフィルタ
100A、100B…撮像装置
100C…ファイバー式内視鏡撮像装置
100D…リレーレンズ式内視鏡観察装置
101…カメラユニット
102…コントローラ
103…モニタ
104…LED励起光源
105…CCD
106…レンズ系
110…外部照明装置
Claims (7)
- 一部又は全部にフィルタ部が形成された絞り羽根部材を複数備え、複数の絞り羽根部材のフィルタ部から形成されたフィルタ領域と該フィルタ領域の内側に位置する開口領域とを有する開口絞りであって、
フィルタ領域が、被写体の観察部位からの蛍光に対応する波長域の光を透過させ、被写体への照明光に対応する波長域の光の透過を低減又は遮断し、
開口領域が、被写体の観察部位からの蛍光に対応する波長域の光と、被写体への照明光に対応する波長域の光を透過させ、
被写体の観察部位からの蛍光に対応する波長域の光が絞られず、開口領域の面積が可変である開口絞り。 - 被写体の観察部位からの蛍光が赤外光であり、照明光が可視光である請求項1記載の開口絞り。
- フィルタ領域における光軸方向の絞り羽根部材の総厚と、開口領域における光軸方向の絞り羽根部材の総厚とが同一である請求項1記載の開口絞り。
- 被写体の観察部位からの蛍光による観察像と、照明光による被写体像とを共に撮影する撮像装置であって、請求項1記載の開口絞りを備えた撮像装置。
- さらに、被写体の観察部位からの蛍光に対応する波長域の光を透過させ、被写体への照明光に対応する波長域の光の透過を低減又は遮断するNDフィルタを備えた請求項4記載の撮像装置。
- 被写体の観察部位からの蛍光による観察像と、照明光による被写体像とを同時に観察する観察装置であって、請求項1記載の開口絞りを備えた観察装置。
- さらに、被写体の観察部位からの蛍光に対応する波長域の光を透過させ、被写体への照明光に対応する波長域の光の透過を低減又は遮断するNDフィルタを備えた請求項6記載の観察装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP09847357.2A EP2454985B1 (en) | 2009-07-16 | 2009-10-05 | Aperture stop |
JP2011522679A JP5224078B2 (ja) | 2009-07-16 | 2009-10-05 | 開口絞り |
US12/809,937 US8711461B2 (en) | 2009-07-16 | 2009-10-05 | Aperture stop |
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JPPCT/JP2009/062885 | 2009-07-16 | ||
PCT/JP2009/062885 WO2011007435A1 (ja) | 2009-07-16 | 2009-07-16 | 開口絞り |
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WO2011007461A1 true WO2011007461A1 (ja) | 2011-01-20 |
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WO2016039000A1 (ja) * | 2014-09-08 | 2016-03-17 | 株式会社島津製作所 | イメージング装置 |
DE102014218202A1 (de) | 2014-09-11 | 2016-03-17 | Iwasaki Electric Co., Ltd. | Abbildungssystem |
US9625386B2 (en) | 2014-09-10 | 2017-04-18 | Iwasaki Electric Co., Ltd. | Imaging system |
US10948638B2 (en) | 2014-03-04 | 2021-03-16 | Stryker European Operations Limited | Spatial and spectral filtering apertures and optical imaging systems including the same |
JP2021186321A (ja) * | 2020-06-01 | 2021-12-13 | 富士フイルム株式会社 | 内視鏡システム |
CN114184588A (zh) * | 2016-05-30 | 2022-03-15 | 徕卡仪器(新加坡)有限公司 | 使用具有透射窗的滤光系统观察部分荧光的物体的医疗装置 |
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US9175831B2 (en) | 2011-01-20 | 2015-11-03 | Yamano Optical Co., Ltd. | Illumination aperture diaphragm |
US10948638B2 (en) | 2014-03-04 | 2021-03-16 | Stryker European Operations Limited | Spatial and spectral filtering apertures and optical imaging systems including the same |
WO2016039000A1 (ja) * | 2014-09-08 | 2016-03-17 | 株式会社島津製作所 | イメージング装置 |
US9625386B2 (en) | 2014-09-10 | 2017-04-18 | Iwasaki Electric Co., Ltd. | Imaging system |
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Also Published As
Publication number | Publication date |
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EP2454985A4 (en) | 2012-11-28 |
US20110205651A1 (en) | 2011-08-25 |
WO2011007435A1 (ja) | 2011-01-20 |
EP2454985B1 (en) | 2017-09-06 |
EP2454985A1 (en) | 2012-05-23 |
JPWO2011007435A1 (ja) | 2012-12-20 |
US8711461B2 (en) | 2014-04-29 |
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