JP5964186B2 - Imaging device - Google Patents

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JP5964186B2
JP5964186B2 JP2012202122A JP2012202122A JP5964186B2 JP 5964186 B2 JP5964186 B2 JP 5964186B2 JP 2012202122 A JP2012202122 A JP 2012202122A JP 2012202122 A JP2012202122 A JP 2012202122A JP 5964186 B2 JP5964186 B2 JP 5964186B2
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polarizer
light
imaging
light source
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JP2014057276A (en
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隆春 藤井
隆春 藤井
翔 五月女
翔 五月女
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Kyocera Corp
Kyocera Optec Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/21—Polarisation-affecting properties

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Description

本発明は、被検体に直線偏光を照射し、反射光を少なくとも平行ニコルおよび垂直ニコルな状態に切替えて撮像可能な撮像装置に関する。   The present invention relates to an imaging apparatus capable of imaging by irradiating a subject with linearly polarized light and switching reflected light to at least parallel Nicols and vertical Nicols.

被検体に直線偏光を照射し、反射光を平行ニコルおよび垂直ニコルな状態に切替えて観察可能な観察装置（撮像装置）が知られている（特許文献１参照）。このような観察装置（撮像装置）では、平行ニコルな状態において被検体の表面の凹凸模様を鮮明に観察可能であり、垂直ニコルな状態において被検体、特に生体の内部構造（シミ）を観察可能である。   There is known an observation apparatus (imaging apparatus) that can observe a subject by irradiating a subject with linearly polarized light and switching the reflected light between parallel Nicols and vertical Nicols (see Patent Document 1). With such an observation device (imaging device), it is possible to clearly observe the concavo-convex pattern on the surface of the subject in a parallel Nicol state, and it is possible to observe the internal structure (stain) of the subject, particularly a living body, in a vertical Nicole state It is.

特開２００８−１７３９６号公報JP 2008-17396 A

撮像装置の小型化も止められているが、特許文献１における観察装置（撮像装置）では、さらなる小型化が困難であった。   Although downsizing of the imaging device has also been stopped, the observation device (imaging device) in Patent Document 1 has difficulty in further downsizing.

したがって、かかる事情に鑑みてなされた本発明の目的は、被検体に直線偏光を照射し、反射光を少なくとも平行ニコルおよび垂直ニコルな状態に切替えて撮像する撮像装置を小型化することにある。   Therefore, an object of the present invention made in view of such circumstances is to reduce the size of an imaging apparatus that irradiates a subject with linearly polarized light and switches reflected light to at least parallel Nicols and vertical Nicols.

上述した諸課題を解決すべく、第１の観点による撮像装置は、
少なくとも一方が回動可能に支持され、互いに平行ニコルおよび垂直ニコルのいずれかの関係に切替え可能な第１の偏光子および第２の偏光子と、
前記第１の偏光子によって直線偏光となる、被検体全体を均質に照明する照明光を出射する光源部と、
前記第２の偏光子によって直線偏光となる、前記被検体の光学像を撮像する撮像素子と、
前記光源部が出射する前記照明光のうち前記第１の偏光子によって反射した光の前記撮像素子への入射を遮る遮光部と、を備え、
前記光源部および前記第１の偏光子は孔部を含み、
前記遮光部は、前記上面を超えて突出するように前記光源部および前記第１の偏光子の前記孔部に挿入される
ことを特徴とするものである。 In order to solve the above-described problems, the imaging apparatus according to the first aspect is
A first polarizer and a second polarizer, at least one of which is pivotally supported and switchable to either a parallel Nicol or vertical Nicol relationship;
A light source unit that emits illumination light that is linearly polarized by the first polarizer and that uniformly illuminates the entire subject; and
An imaging device that captures an optical image of the subject that is linearly polarized by the second polarizer ;
A light shielding unit that blocks light incident on the imaging element from light reflected by the first polarizer from the illumination light emitted from the light source unit ,
The light source unit and the first polarizer include a hole,
The light shielding part is inserted into the hole part of the light source part and the first polarizer so as to protrude beyond the upper surface .

また、第３の観点による撮像装置は、
前記遮光部は入射する光を減衰させる
ことが好ましい。 An imaging device according to a third aspect is
The light shielding part preferably attenuates incident light.

また、第４の観点による撮像装置は、
前記回動可能に支持される第１の偏光子および第２の偏光子に設けられ、回転位置を検出する回転位置検出センサを更に備える
ことが好ましい。 An imaging apparatus according to a fourth aspect is
It is preferable to further include a rotational position detection sensor that is provided on the first polarizer and the second polarizer that are rotatably supported and detects a rotational position.

上記のように構成された本発明に係る撮像装置によれば、被検体に直線偏光を照射し、反射光を少なくとも平行ニコルおよび垂直ニコルな状態に切替えて撮像する撮像装置において小型化が可能である。   According to the imaging apparatus according to the present invention configured as described above, it is possible to reduce the size of the imaging apparatus that irradiates the subject with linearly polarized light and switches the reflected light to at least parallel Nicols and vertical Nicols. is there.

本発明の一実施形態に係る撮像装置の外観図である。1 is an external view of an imaging apparatus according to an embodiment of the present invention. 撮像装置の内部構成を示す構造図である。It is a structural diagram showing the internal configuration of the imaging device.

以下、本発明の実施形態について、図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

まず、本発明の一実施形態に係る撮像装置について説明する。図１は、本実施形態に係る撮像装置の外観図である。   First, an imaging apparatus according to an embodiment of the present invention will be described. FIG. 1 is an external view of an imaging apparatus according to the present embodiment.

図１に示すように、撮像装置１０は、カメラ部１１および把持部１２を連結させることにより構成される。カメラ部１１は、被検体に接触させる接触面１３を有する。接触面１３の中央には孔部１４が形成されており、カメラ部１１は孔部１４から入射する光学像を撮像可能である。把持部１２は、接触面１３の反対側においてカメラ部１１に連結される。撮像装置１０は接触面１３を肌などの被検体に当接させた状態で撮像することを想定しており、把持部１２は接触面１３を被検体に当接させ易い形状に形成される。また、把持部１２は撮像スイッチ１５を有する。撮像スイッチ１５は、ユーザが把持部１２を把持しながらＯＮ／ＯＦＦの切替えが容易な位置に設けられる。   As illustrated in FIG. 1, the imaging device 10 is configured by connecting a camera unit 11 and a grip unit 12. The camera unit 11 has a contact surface 13 that contacts the subject. A hole 14 is formed at the center of the contact surface 13, and the camera unit 11 can capture an optical image incident from the hole 14. The grip portion 12 is connected to the camera portion 11 on the opposite side of the contact surface 13. It is assumed that the imaging apparatus 10 captures an image with the contact surface 13 in contact with a subject such as skin, and the grip portion 12 is formed in a shape that allows the contact surface 13 to easily contact the subject. In addition, the grip portion 12 has an imaging switch 15. The imaging switch 15 is provided at a position where the user can easily switch on and off while holding the grip portion 12.

図２に示すように、撮像装置１０は、光源部１６、第１の偏光子１７、遮光部１８、第２の偏光子１９、光学系２０、ボイスコイルモータ２１、および撮像素子２２を有する。   As illustrated in FIG. 2, the imaging device 10 includes a light source unit 16, a first polarizer 17, a light shielding unit 18, a second polarizer 19, an optical system 20, a voice coil motor 21, and an imaging element 22.

光源部１６は、ＬＥＤ基板２３および複数の面発光型のチップＬＥＤ光源２４によって構成される。ＬＥＤ基板２３は所定の内径を有するリング状の平板であり、ＬＥＤ基板２３の中心を通る垂線が孔部１４の中心を通り、接触面１３と平行となるようにカメラ部１１内に固定される。ＬＥＤ基板２３は、接触面１３側において複数のチップＬＥＤ光源２４を一様に配置させた状態で支持する。また、ＬＥＤ基板２３は、ホールＩＣ２５を特定の位置において支持する。各チップＬＥＤ光源２４は、接触面１３側に照明光を出射する。各チップＬＥＤ光源２４は、撮像スイッチ１５のＯＮ／ＯＦＦを切替えることにより、発光および消灯を切替える。ホールＩＣ２５については、後述する。   The light source unit 16 includes an LED substrate 23 and a plurality of surface-emitting chip LED light sources 24. The LED substrate 23 is a ring-shaped flat plate having a predetermined inner diameter, and is fixed in the camera unit 11 so that a perpendicular passing through the center of the LED substrate 23 passes through the center of the hole 14 and is parallel to the contact surface 13. . The LED substrate 23 supports a plurality of chip LED light sources 24 arranged uniformly on the contact surface 13 side. The LED substrate 23 supports the Hall IC 25 at a specific position. Each chip LED light source 24 emits illumination light to the contact surface 13 side. Each chip LED light source 24 switches light emission and extinction by switching ON / OFF of the imaging switch 15. The Hall IC 25 will be described later.

第１の偏光子１７は、ＬＥＤ基板２３と同じ内径を有するリング形状に形成される。第１の偏光子１７は、カメラ部１１内において、第１の偏光子１７の中心を通る垂線が孔部１４の中心を通り、第１の偏光子１７の中心を軸に回動可能に支持される。第１の偏光子１７は、第１の回転位置から９０°回転させた第２の回転位置までの間で回動可能である。第１の偏光子１７は、手動および／またはモータなどを用いて自動で、回動させることが可能である。   The first polarizer 17 is formed in a ring shape having the same inner diameter as the LED substrate 23. The first polarizer 17 is supported in the camera unit 11 so that a perpendicular passing through the center of the first polarizer 17 passes through the center of the hole 14 and is rotatable about the center of the first polarizer 17. Is done. The first polarizer 17 can rotate between a first rotation position and a second rotation position rotated by 90 °. The first polarizer 17 can be rotated manually and / or automatically using a motor or the like.

第１の偏光子１７は、光源部１６よりも接触面１３側に配置され、チップＬＥＤ光源２４から出射する照明光の直線偏光の成分を透過する。前述のように、チップＬＥＤ光源２４は面発光型の発光素子であり、第１の偏光子１７により直線偏光となった照明光は、孔部１４に位置する被検体全体を均質に照明する。第１の偏光子１７は、把持部１２側におけるホールＩＣ２５と対向する位置に磁石２６を有する。   The first polarizer 17 is disposed closer to the contact surface 13 than the light source unit 16, and transmits the linearly polarized component of the illumination light emitted from the chip LED light source 24. As described above, the chip LED light source 24 is a surface-emitting light-emitting element, and the illumination light that has been linearly polarized by the first polarizer 17 uniformly illuminates the entire subject located in the hole 14. The first polarizer 17 has a magnet 26 at a position facing the Hall IC 25 on the grip portion 12 side.

磁石２６はホールＩＣ２５と協働して、回転位置検出センサとして機能する。ホールＩＣ２５は、第１の偏光子１７の回転位置を検出して、画像処理装置などに出力可能である。検出した回転位置は、画像処理装置において観察モードの判別などに使用可能である。   The magnet 26 functions as a rotational position detection sensor in cooperation with the Hall IC 25. The Hall IC 25 can detect the rotational position of the first polarizer 17 and output it to an image processing apparatus or the like. The detected rotation position can be used for discrimination of an observation mode in the image processing apparatus.

遮光部１８は外径がＬＥＤ基板２３および第１の偏光子１７の内径に収納される大きさ胃の円筒形状である。遮光部１８は、ＬＥＤ基板２３から第１の偏光子１７の上面と一致するかまたは上面を超えて突出するように、ＬＥＤ基板２３および第１の偏光子１７の孔部に挿通される。遮光部１８は、チップＬＥＤ光源２４から出射する照明光の被検体における反射光以外の光の撮像素子２２への入射を遮る。遮光部１８は、内面および外面が例えば黒色に塗付けられ、遮光部１８に入射する光を減衰させる。   The light-shielding portion 18 has a cylindrical shape with an outer diameter accommodated in the inner diameters of the LED substrate 23 and the first polarizer 17. The light shielding unit 18 is inserted into the hole of the LED substrate 23 and the first polarizer 17 so as to coincide with the upper surface of the first polarizer 17 or protrude beyond the upper surface of the LED substrate 23. The light shielding unit 18 blocks light incident on the imaging element 22 other than the reflected light from the subject of the illumination light emitted from the chip LED light source 24. The light shielding unit 18 has an inner surface and an outer surface that are painted black, for example, and attenuates light incident on the light shielding unit 18.

第２の偏光子１９は遮光部１８の内径よりも大きく、遮光部１８の把持部１２側の端部を覆うように固定される。第２の偏光子１９の偏光面は、第１の偏光子１７が第１の回転位置にあるときに第１の偏光子１７と平行ニコルの関係であり、第１の偏光子１７が第２の回転位置にあるときには第１の偏光子１７と垂直ニコルの関係となるように調整した状態で固定される。第２の偏光子１９は、遮光部１８に入射する被検体の反射光の直線偏光の成分を透過する。   The second polarizer 19 is larger than the inner diameter of the light shielding part 18 and is fixed so as to cover the end of the light shielding part 18 on the gripping part 12 side. The polarization plane of the second polarizer 19 is in a parallel Nicols relationship with the first polarizer 17 when the first polarizer 17 is in the first rotational position, and the first polarizer 17 is the second polarizer. Is fixed in a state adjusted so as to have a vertical Nicol relationship with the first polarizer 17. The second polarizer 19 transmits the linearly polarized component of the reflected light of the subject incident on the light shielding unit 18.

なお第２の偏光子１９は、遮光部１８の内部を通過し撮像素子２２に入射する光の成分を制御するものであり、前述した位置に代えて遮光部１８の入射側開口（図２に二点鎖線で示した１９’の位置）に設けてもよい。   The second polarizer 19 controls the component of light that passes through the inside of the light shielding portion 18 and is incident on the image sensor 22, and instead of the position described above, the incident side opening (see FIG. 2) of the light shielding portion 18. You may provide in 19 'position shown with the dashed-two dotted line.

光学系２０は変倍レンズおよびフォーカスレンズなどの複数のレンズを含んで構成される。光学系２０は、光軸が孔部１４の中心を通るように、カメラ部１１内に配置される。光学系２０は被検体の光学像を撮像素子２２の受光面に結像させる。変倍レンズを光軸に沿って変位させることによりズームインおよびズームアウトが可能である。フォーカスレンズを光軸に沿って変位させることにより、被検体の光学像を撮像素子２２の受光面に合焦させることが可能である。   The optical system 20 includes a plurality of lenses such as a variable power lens and a focus lens. The optical system 20 is disposed in the camera unit 11 so that the optical axis passes through the center of the hole 14. The optical system 20 forms an optical image of the subject on the light receiving surface of the image sensor 22. Zooming in and zooming out is possible by displacing the zoom lens along the optical axis. By displacing the focus lens along the optical axis, it is possible to focus the optical image of the subject on the light receiving surface of the image sensor 22.

ボイスコイルモータ２１は変倍レンズおよび／またはフォーカスレンズを光軸に沿って変位させる。なお、変倍レンズおよび／またはフォーカスレンズを変位させる機器はボイスコイルモータに限定されず、例えばＤＣモータなどの従来公知の駆動手段を適用してもよい。   The voice coil motor 21 displaces the zoom lens and / or the focus lens along the optical axis. Note that the device for displacing the zoom lens and / or the focus lens is not limited to the voice coil motor, and conventionally known driving means such as a DC motor may be applied.

撮像素子２２は、センサ基板２７を介してカメラ部１１内に、受光面の中心を通る垂線が孔部１４の中心を通るように、固定される。撮像素子２２は、受光面上に形成される光学像を、静止画像および／または動画として撮像する。撮像素子２２は、撮像スイッチ１５のＯＮ／ＯＦＦを切替えることにより、撮像の実行と停止を切替える。静止画像および／または動画像として撮像した画像は、例えば撮像装置１０と無線または有線で接続される画像処理装置において画像処理が施され、ディスプレイ装置またはタブレット端末を用いて観察可能である。   The imaging element 22 is fixed in the camera unit 11 via the sensor substrate 27 so that a perpendicular passing through the center of the light receiving surface passes through the center of the hole 14. The image sensor 22 captures an optical image formed on the light receiving surface as a still image and / or a moving image. The imaging element 22 switches between execution and stop of imaging by switching ON / OFF of the imaging switch 15. For example, an image captured as a still image and / or a moving image is subjected to image processing in an image processing device connected to the imaging device 10 wirelessly or by wire, and can be observed using a display device or a tablet terminal.

次に、撮像装置１０を用いた被検体の観察について、説明する。被検体が、例えば肌などの生体組織であるあるときには、直線偏光を照射すると、その一部は表面で直接反射され、残りは表面内部において間接反射される。直線反射においては照明光の偏光状態が反射光において維持され、間接反射においては偏光状態が変化する。それゆえ、第１の偏光子１７および第２の偏光子１９が平行ニコルの状態においては、間接反射が起こる表面内部の光学像は遮光され、直接反射が生じる表面の光学像が撮像素子２２に入射する。一方、第１の偏光子１７および第２の偏光子１９が垂直ニコルの状態においては、直接反射が生じる表面の光学像は遮光され、間接反射が生じる表面内部の光学像が撮像素子２２に入射する。   Next, observation of the subject using the imaging apparatus 10 will be described. When the subject is a living tissue such as skin, for example, when linearly polarized light is irradiated, a part of the subject is directly reflected on the surface and the rest is indirectly reflected on the inside of the surface. In linear reflection, the polarization state of illumination light is maintained in the reflected light, and in indirect reflection, the polarization state changes. Therefore, in the state where the first polarizer 17 and the second polarizer 19 are in parallel Nicols, the optical image inside the surface where indirect reflection occurs is shielded, and the optical image of the surface where direct reflection occurs is applied to the image sensor 22. Incident. On the other hand, when the first polarizer 17 and the second polarizer 19 are in the vertical Nicols state, the optical image on the surface where direct reflection occurs is shielded, and the optical image inside the surface where indirect reflection occurs enters the image sensor 22. To do.

したがって、第１の偏光子１７を第１の回転位置に合わせた状態で肌を被検体として観察すると、肌表面の凹凸模様が鮮明に撮像される。また、第１の偏光子１７を第２の回転位置に合わせた状態で肌を観察すると、皮下に形成されるシミなどの色素沈着部が鮮明に撮像される。   Therefore, when the skin is observed as a subject in a state where the first polarizer 17 is set to the first rotation position, the uneven pattern on the skin surface is clearly imaged. In addition, when the skin is observed in a state where the first polarizer 17 is set to the second rotation position, a pigmentation part such as a stain formed under the skin is clearly imaged.

以上のような構成の本実施形態の撮像装置によれば、照射角の広いチップＬＥＤ光源２４を用いることにより被検体全体に光量ムラの少ない照明光を照射可能であるため、プリズムやレンズなどの光学系が不要である。このような光学系を設ける必要が無いので、撮像装置１０の小型化が可能である。   According to the imaging apparatus of the present embodiment configured as described above, it is possible to irradiate illumination light with less light amount unevenness to the entire subject by using the chip LED light source 24 with a wide irradiation angle. No optical system is required. Since there is no need to provide such an optical system, the imaging device 10 can be downsized.

また、本実施形態の撮像装置によれば、遮光部１８がＬＥＤ基板２３から第１の偏光子１７の上面と一致するかまたは上面を超えて突出するように、ＬＥＤ基板２３および第１の偏光子１７の孔部に挿入される。それゆえ、第１の偏光子１７のチップＬＥＤ光源２４側の面において反射するチップＬＥＤ光源２４から出射した照明光の一部のように、第１の偏光子１７を透過しない照明光の撮像素子２２への入射を防止可能である。このような照明光の入射を防ぐことにより、被検体の表面または表面下の画像を鮮明に撮像可能となる。   In addition, according to the imaging apparatus of the present embodiment, the LED substrate 23 and the first polarized light are so arranged that the light shielding portion 18 coincides with the upper surface of the first polarizer 17 from the LED substrate 23 or protrudes beyond the upper surface. It is inserted into the hole of the child 17. Therefore, an imaging device for illumination light that does not pass through the first polarizer 17, such as part of illumination light emitted from the chip LED light source 24 that reflects on the surface of the first polarizer 17 on the chip LED light source 24 side. 22 can be prevented from entering. By preventing the incidence of such illumination light, it is possible to capture a clear image of the surface of the subject or the surface below the surface.

また、本実施形態の撮像装置によれば、遮光部１８の表面に入射する光を減衰させるので、カメラ部１１内および遮光部１８内で乱反射する照明光を減衰させ、撮像素子２２への入射を防ぐことが可能である。したがって、被検体の表面または表面下の画像を鮮明に撮像可能である。   Further, according to the imaging apparatus of the present embodiment, the light incident on the surface of the light shielding unit 18 is attenuated, so that the illumination light diffusely reflected in the camera unit 11 and the light shielding unit 18 is attenuated and incident on the imaging element 22. It is possible to prevent. Therefore, it is possible to capture a clear image of the surface of the subject or the subsurface.

また、本実施形態の撮像装置によれば、回転位置検出センサが設けられるので、第１の偏光子１７および第２の偏光子１９が平行ニコルおよび垂直ニコルであるか否かを検出可能である。   Further, according to the imaging apparatus of the present embodiment, since the rotational position detection sensor is provided, it is possible to detect whether or not the first polarizer 17 and the second polarizer 19 are parallel Nicols and vertical Nicols. .

また、本実施形態の撮像装置によれば、回転位置検出センサを形成する磁石を第１の偏光子１７に設けるので、回転位置を出力するための信号線を第１の偏光子１７に設置不要である。それゆえ、回動可能な第１の偏光子１７に信号線が配置されないので、製造が簡潔であり、また、信号線が第１の偏光子１７の外部に接続される場合に断線などの問題が生じることがない。   Further, according to the imaging apparatus of the present embodiment, since the magnet that forms the rotational position detection sensor is provided in the first polarizer 17, it is not necessary to install a signal line for outputting the rotational position in the first polarizer 17. It is. Therefore, since the signal line is not disposed on the rotatable first polarizer 17, the manufacturing is simple, and when the signal line is connected to the outside of the first polarizer 17, there is a problem such as disconnection. Will not occur.

本発明を諸図面や実施形態に基づき説明してきたが、当業者であれば本開示に基づき種々の変形や修正を行うことが容易であることに注意されたい。従って、これらの変形や修正は本発明の範囲に含まれることに留意されたい。   Although the present invention has been described based on the drawings and embodiments, it should be noted that those skilled in the art can easily make various changes and modifications based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention.

例えば、本実施形態において、第１の偏光子１７が回動可能に支持される構成であるが、第２の偏光子１９が回動可能に支持される構成であってもよく、また、両者が回動可能な構成であってもよい。   For example, in the present embodiment, the first polarizer 17 is rotatably supported, but the second polarizer 19 may be rotatably supported. The structure which can be rotated may be sufficient.

また、本発明における撮像装置では、偏光子を制御することにより、表面観察ならびに内部構造観察を可能としているが、撮像画像のコントラストは表面観察の方が大きく、それ自体公知のオートフォーカス機構を行う場合には表面観察のほうが精度のよい合焦制御が可能となる。それゆえ、撮像装置に使用する合焦制御においては、表面観察モードにて合焦を実行し、その位置を記憶することで、内部構造観察の合焦位置として制御する。そして、必要に応じて、この位置を起点として微調整を行うことで、コントラストの低い内部構造観察においても精度の高い合焦制御を実現することが可能となる。   In the imaging apparatus according to the present invention, surface observation and internal structure observation can be performed by controlling the polarizer, but the contrast of the captured image is larger in the surface observation, and a known autofocus mechanism is used. In some cases, the surface observation enables more accurate focusing control. Therefore, in the focus control used for the imaging apparatus, the focus is executed in the surface observation mode, and the position is stored, thereby controlling the focus position for the internal structure observation. If necessary, fine adjustment is performed with this position as a starting point, so that it is possible to achieve highly accurate focusing control even in internal structure observation with low contrast.

１０ 撮像装置
１１ カメラ部
１２ 把持部
１３ 接触面
１４ 孔部
１５ 撮像スイッチ
１６ 光源部
１７ 第１の偏光子
１８ 遮光部
１９ 第２の偏光子
２０ 光学系
２１ ボイスコイルモータ
２２ 撮像素子
２３ ＬＥＤ基板
２４ チップＬＥＤ光源
２５ ホールＩＣ
２６ 磁石
２７ センサ基板 DESCRIPTION OF SYMBOLS 10 Imaging device 11 Camera part 12 Grip part 13 Contact surface 14 Hole part 15 Imaging switch 16 Light source part 17 1st polarizer 18 Light-shielding part 19 2nd polarizer 20 Optical system 21 Voice coil motor 22 Imaging element 23 LED board 24 Chip LED light source 25 Hall IC
26 Magnet 27 Sensor board

Claims (3)

少なくとも一方が回動可能に支持され、互いに平行ニコルおよび垂直ニコルのいずれかの関係に切替え可能な第１の偏光子および第２の偏光子と、
前記第１の偏光子によって直線偏光となる、被検体全体を均質に照明する照明光を出射する光源部と、
前記第２の偏光子によって直線偏光となる、前記被検体の光学像を撮像する撮像素子と、
前記光源部が出射する前記照明光のうち前記第１の偏光子によって反射した光の前記撮像素子への入射を遮る遮光部と、を備え、
前記光源部および前記第１の偏光子は孔部を含み、
前記遮光部は、前記第１の偏光子の上面を超えて突出するように前記光源部および前記第１の偏光子の前記孔部に挿入されることを特徴とする撮像装置。 A first polarizer and a second polarizer, at least one of which is pivotally supported and switchable to either a parallel Nicol or vertical Nicol relationship;
A light source unit that emits illumination light that is linearly polarized by the first polarizer and that uniformly illuminates the entire subject; and
An imaging device that captures an optical image of the subject that is linearly polarized by the second polarizer;
A light shielding unit that blocks light incident on the imaging element from light reflected by the first polarizer from the illumination light emitted from the light source unit ,
The light source unit and the first polarizer include a hole,
The light shielding unit, the imaging characterized Rukoto is inserted into the hole portion of the light source unit and the first polarizer so as to project beyond the upper surface of the first polarizer device. 請求項１に記載の撮像装置であって、前記遮光部は入射する光を減衰させることを特徴とする撮像装置。 The imaging apparatus according to claim 1 , wherein the light shielding unit attenuates incident light. 請求項１または請求項２に記載の撮像装置であって、前記回動可能に支持される第１の偏光子および第２の偏光子に設けられ、回転位置を検出する回転位置検出センサを更に備えることを特徴とする撮像装置。 The imaging apparatus according to claim 1 or claim 2, provided on the first polarizer and the second polarizer are the rotatably supported, further rotational position detecting sensor for detecting the rotational position An imaging apparatus comprising:
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