ND FILTER AND METHOD FOR MANUFACTURING SAME

Provided is an ND filter that allows fine adjustment of optical transmittance and that overcomes problems such as delamination of a coating during the use of the filter and an ensuing loss in the light-attenuation effect. The ND filter is characterized by being formed of two glass substrates each having a vacuum deposition layer of a metallic substance formed on one face thereof, put together by bonding the vacuum deposition layers of the glass substrates with each other, thus forming a lamination of a glass substrate, a vacuum deposition layer, an adhesive layer, a vacuum deposition layer, and a glass substrate, in that order.

POLARISING FILTER WITH MULTIFUNCTION AND METHOD FOR MANUFACTURING POLARISING FILTER WITH MULTIFUNCTION

A multifunctional polarizing filter is used for a digital camera, and is produced by advanced optical technology to have a very small thickness and an integral structure in order to prevent a vignetting phenomenon in which the captured image is adversely affected by the frame of the filter.

POLARISING FILTER WITH MULTIFUNCTION AND METHOD FOR MANUFACTURING POLARISING FILTER WITH MULTIFUNCTION

POLARIZING FILTER WITH MULTIFUNCTION AND METHOD FOR MANUFACTURING POLARIZING FILTER WITH MULTIFUNCTION

A multifunctional polarizing filter is used for a digital camera, and is produced by advanced optical technology to have a very small thickness and an integral structure in order to prevent a vignetting phenomenon in which the captured image is adversely affected by the frame of the filter. 1. A multifunctional polarizing filter that is attached to a front side of a lens of a digital camera that is used for testing equipment , measuring equipment , medical equipment , or the like , and functions as a polarizing filter and an ultraviolet cut filter , the multifunctional polarizing filter comprising:a main body that includes an ultraviolet cut glass substrate that is positioned on a light-incident side, and a transmitting glass substrate that is positioned on a camera side,a surface of the ultraviolet cut glass substrate positioned on the light-incident side being polished, and coated with an antireflection coating, an ultraviolet cut thin film formed of a dielectric multilayer film being stacked on a surface of the ultraviolet cut glass substrate positioned on the camera side,a polarizing filter being bonded to a surface of the transmitting glass substrate positioned on the light-incident side through an adhesive, a surface of the transmitting glass substrate positioned on the camera side being polished, and coated with an antireflection coating, andthe ultraviolet cut glass substrate and the transmitting glass substrate being integrated through an adhesive.2. A multifunctional polarizing filter that is attached to a front side of a lens of a digital camera that is used for testing equipment , measuring equipment , medical equipment , or the like , and functions as a polarizing filter and a near-infrared cut filter , the multifunctional polarizing filter comprising:a main body that includes a near-infrared cut glass substrate that is positioned on a light-incident side, and a transmitting glass substrate that is positioned on a camera side,a surface of the near- ...

FILTER FRAME FOR DIGITAL CAMERA MADE FROM POLYMER ELASTIC BODY

A digital camera filter frame reduces the load imposed on an autofocus motor provided in the main body of a camera due to a reduced weight, and prevents a situation in which the optical axis of a lens barrel of a digital camera varies when the digital camera filter frame is fitted to the front side of the lens barrel, and collides with something hard during use. A ring-like filter frame main body is produced by molding a polymer elastic body, and a filter lens having a specific effect is fitted to the ring-like filter frame main body. 1. A digital camera filter frame that is formed of a polymer elastic body , and fitted to a front side of a lens barrel of a digital camera to control light , the digital camera filter frame being produced as a ring-like filter frame main body by molding the polymer elastic body , and a filter lens having a specific effect being fitted to the ring-like filter frame main body.2. The digital camera filter frame according to claim 1 , the digital camera filter frame being produced by producing the ring-like filter frame main body by molding the polymer elastic body claim 1 , forming a lens-retaining inward protrusion section and a lens fitting section for the filter lens on an inner surface of the ring-like filter frame main body claim 1 , fitting the filter lens to the lens-retaining inward protrusion section and the lens fitting section claim 1 , and plastically deforming an end of a peripheral edge section of the lens fitting section by thermal caulking to secure the filter lens on the ring-like filter frame main body.3. The digital camera filter frame according to claim 1 , wherein the ring-like filter frame main body is produced by molding a thermosetting resin claim 1 , a thermoplastic resin claim 1 , or a composite material that utilizes a synthetic resin (e.g. claim 1 , fiber-reinforced plastic) as the polymer elastic body claim 1 , a polymer elastic body that exhibits relatively high elasticity being selected as the polymer ...

ROBOTICALLY-ASSISTED SURGICAL DEVICE, ROBOTICALLY-ASSISTED SURGERY METHOD, AND SYSTEM

A robotically-assisted surgical device assists robotic surgery with a surgical robot including a robot arm, and includes a processing unit and a display unit. The processing unit acquires 3D data of a subject; acquires kinematic information of the robot arm; acquires information of a surgical procedure for operating; acquires position planning information for a plurality of ports to be pierced on a body surface of the subject; acquires measurement information obtained by measuring a position of a first port pierced on the body surface among the plurality of ports; determines a position of at least one of remaining ports other than the first port, based on the measurement information of the position of the first port, the information of the surgical procedure, the kinematic information, and the 3D data; and causes the display unit to display information indicating the determined position of the remaining port. 1. A robotically-assisted surgical device that assists minimally invasive robotic surgery with a surgical robot that includes at least one robot arm holding a surgical instrument ,the robotically-assisted surgical device comprising a processing unit and a display unit, whereinthe processing unit is configured to:acquire 3D data of a subject;acquire kinematic information regard to the robot arm;acquire information of a surgical procedure for operating the subject;acquire position planning information for a plurality of ports which are to be pierced on a body surface of the subject;acquire measurement information obtained by measuring a position of a first port which is pierced on the body surface among the plurality of ports;determine a position of at least one of remaining ports other than the first port among the plurality of ports, based on the measurement information of the position of the first port, the information of the surgical procedure, the kinematic information, and the 3D data; andcause the display unit to display information indicating the ...

Robotically-assisted surgical device, robotically-assisted surgery method, and system

A robotically-assisted surgical device that assists minimally invasive robotic surgery with a surgical robot is configured to acquire volume data of a non-pneumoperitoneum state of a subject, perform a pneumoperitoneum simulation on the volume data of the non-pneumoperitoneum state to generate deformation information including movement of at least one point in the volume data of the non-pneumoperitoneum state caused by pneumoperitoneum, generate 3D data of a first virtual pneumoperitoneum state based on the volume data of the non-pneumoperitoneum state and the deformation information, derive a first planned position in the 3D data of the first virtual pneumoperitoneum state, derive a second planned position in the volume data of the non-pneumoperitoneum state based on the first planned position in the first virtual pneumoperitoneum state and the deformation information, and visualize the volume data of the non-pneumoperitoneum state with an annotation of information indicating the second planned position.

ROBOTICALLY-ASSISTED SURGICAL DEVICE, ROBOTICALLY-ASSISTED SURGERY METHOD, AND SYSTEM

A robotically-assisted surgical device assists robotic surgery with a surgical robot that includes at least one robot arm holding a surgical instrument. The robotically-assisted surgical device includes a processing unit and a display unit. The processing unit is configured to: acquire 3D data of a subject; acquire kinematic information regard to the robot arm; acquire information of an surgical procedure for operating the subject; acquire information regarding a position of at least one port which is to be pierced on a body surface of the subject; derive a 2D range on the body surface where errors are allowed for the piercing of the port based on the 3D data, the kinematic information, the information of the surgical procedure, and the position of the port; and cause the display unit to display the information regarding the position of the port and information indicating the 2D range. 1. A robotically-assisted surgical device that assists minimally invasive robotic surgery with a surgical robot that includes at least one robot arm holding a surgical instrument ,the robotically-assisted surgical device comprising a processing unit and a display unit, whereinthe processing unit is configured to:acquire 3D data of a subject;acquire kinematic information regard to the robot arm;acquire information of a surgical procedure for operating the subject;acquire information regarding a position of at least one port which is to be pierced on a body surface of the subject;derive a 2D range on the body surface where errors are allowed for the piercing of the port based on the 3D data, the kinematic information, the information of the surgical procedure, and the position of the port; andcause the display unit to display the information regarding the position of the port and information indicating the 2D range.2. The robotically-assisted surgical device according to claim 1 , whereinthere are at least two different distances between the position of the port and respective positions ...

ROBOTICALLY-ASSISTED SURGICAL SYSTEM, ROBOTICALLY-ASSISTED SURGICAL METHOD, AND COMPUTER-READABLE MEDIUM

A robotically-assisted surgical system that assists robotic surgery by a surgical robot having a robot main body includes one or more processors. The one or more processors are configured to plan a position of a port to be perforated on a body surface of a subject which is a target of the robotic surgery, acquire a captured image obtained by capturing the subject including at least a part of the subject by an overview camera included in the robot main body, recognize a planned position of the port in the captured image based on the captured image and the planned position of the port, and show the captured image and port position information indicating the planned position of the port in the subject illustrated in the captured image, on a display unit. 1. A robotically-assisted surgical system that assists robotic surgery by a surgical robot having a robot main body , comprising:one or more processors, whereinthe one or more processors are configured toplan a position of a port to be perforated on a body surface of a subject which is a target of the robotic surgery,acquire a captured image obtained by capturing the subject including at least a part of the subject by an overview camera included in the robot main body,recognize a planned position of the port in the captured image based on the captured image and the planned position of the port, andshow the captured image and port position information indicating the planned position of the port in the subject illustrated in the captured image, on a display unit.2. The robotically-assisted surgical system according to claim 1 , wherein the one or more processors are configured toacquire information on a landmark of the subject and positional relationship information indicating a positional relationship between the landmark of the subject and the planned position of the port,recognize an image position of the landmark in the captured image, andrecognize the planned position of the port in the captured image based on the ...

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND COMPUTER-READABLE STORAGE MEDIUM STORING PROGRAM

An image processing apparatus includes an image acquisition unit, a setting unit, an image derivation unit, a luminance condition derivation unit and a display unit. The image acquisition unit acquires a first diffusion-weighted image of a first b value and a second diffusion-weighted image of a second b value. The setting unit sets a target diffusion coefficient and a third b value. The image derivation unit derives a virtual diffusion-weighted image of the third b value based on the target diffusion coefficient, the first diffusion-weighted image and the second diffusion-weighted image. The luminance condition derivation unit derives a luminance condition for displaying the virtual diffusion-weighted image based on the target diffusion coefficient and the third b value. The display unit displays the virtual diffusion-weighted image according to the luminance condition derived by the luminance condition derivation unit. 1. An image processing apparatus comprising:an image acquisition unit that acquires a first diffusion-weighted image of a first b value and a second diffusion-weighted image of a second b value;a setting unit that sets a target diffusion coefficient and a third b value;an image derivation unit that derives a virtual diffusion-weighted image of the third b value based on the target diffusion coefficient, the first diffusion-weighted image and the second diffusion-weighted image;a luminance condition derivation unit that derives a luminance condition for displaying the virtual diffusion-weighted image based on the target diffusion coefficient and the third b value; anda display unit that displays the virtual diffusion-weighted image according to the luminance condition derived by the luminance condition derivation unit.2. The image processing apparatus according to claim 1 ,wherein the luminance condition derivation unit dynamically derives the luminance condition when the third b value is changed by the setting unit.3. The image processing apparatus ...

Medical image processing apparatus, medical image processing method, and system

A medical image processing apparatus includes: a display unit; and circuitry configured to: acquire volume data including tissues, and set a first mask region and a second mask region which include a voxel to be rendered among a plurality of voxels included in the volume data; set a first plane which intersects both the first mask region and the second mask region; display a first image in which a first region formed by cutting the first mask region by the first plane and the second mask region are rendered; receive through an operation unit a first operation for setting a second plane which is parallel to the first plane and intersects both the first mask region and the second mask region; and display a second image in which a second region formed by cutting the first mask region by the second plane and the second mask region are rendered.

Robotically-assisted surgical device, robotically-assisted surgery method, and system

A robotically-assisted surgical device assists robotic surgery with a surgical robot including a robot arm, and includes a processing unit and a display unit. The processing unit acquires 3D data of a subject; acquires kinematic information of the robot arm; acquires information of a surgical procedure for operating; acquires position planning information for a plurality of ports to be pierced on a body surface of the subject; acquires measurement information obtained by measuring a position of a first port pierced on the body surface among the plurality of ports; determines a position of at least one of remaining ports other than the first port, based on the measurement information of the position of the first port, the information of the surgical procedure, the kinematic information, and the 3D data; and causes the display unit to display information indicating the determined position of the remaining port.

遊星歯車機構

(57)【要約】 【課題】 本発明は、回転軸の端部の各支軸に軸受を介 して遊星歯車を設け、遊星歯車及び機構自体の軸方向の 長さを従来よりも大幅に短縮することを目的とする。 【解決手段】 本発明による遊星歯車機構は、ケース (1)に回転自在に設けられた回転軸(3)の端部の支軸(30) の外周位置に軸受(4)を介して遊星歯車(5)を設けること により、遊星歯車(5)及び機構自体の軸方向の長さを従 来よりも短縮させて小型化できる構成である。

デジタルカメラ用の撥水機能付きフィルター

【課題】フィルターレンズ、並びにフィルター枠を濡らしてしまうことのない撥水機能付きフィルターを提供する。 【解決手段】フィルター１を、フィルター枠２にフィルターレンズ３を嵌着してレンズ押さえバネ４にてフィルターレンズ３を内蔵してを構成し、該フィルター１をフッ素系基剤からなる撥水撥油剤槽又はシリコーン系基剤から成る撥水撥油剤槽に浸漬した後に乾燥させることにより、フィルターの外部側、内部側とも均一に撥水層をコーティングすることが可能で、特に他のアタッチメント装着用の雌ネジ部９やデジタルカメラ鏡筒への取付雄ネジ部１２、そして、フィルターレンズ３やレンズ押さえバネ部４等の入り込んだ構造部分にも均一に撥水層をコーティング可能である。 【選択図】図１

配線基板、電子装置

【課題】接続ピンの傾きを抑制すること。【解決手段】配線基板１は、接続パッド１２Ｐを備えた第１基板１０と、円柱状の接続ピン３０とを有する。第１基板１０は、配線層１２と、配線層１２の一部を覆うソルダーレジスト層１７とを有している。ソルダーレジスト層１７は、配線層１２の一部を露出する円形状の開口部１７Ｘと、開口部１７Ｘの中に配線層１２の一部を覆う支持部１７Ｓとを有し、開口部１７Ｘと支持部１７Ｓとの間から露出する配線層１２の一部が接続パッド１２Ｐである。接続ピン３０の第１端部は、開口部１７Ｘに配置された接合部材７１により接続パッド１２Ｐに接続されている。【選択図】図１

モータロータ構造

(57)【要約】 【課題】 本発明は、マグネットと輪状ロータヨーク間 にピンを設け、マグネットの外周にマグネット固定リン グを設けることにより、マグネットの回転と剥れを防止 することを目的とする。 【解決手段】 本発明によるモータロータ構造は、マグ ネット(3)同志の接続部(3a)と輪状ロータヨーク(2)の外 周面(2a)との間に設けられたピン(4)を有し、前記輪状 ロータヨーク(2)に対するマグネット(3)の回転をピン (4)により防止する構成である。

フィルター

【目的】デジタルカメラ、デジタルビデオカメラなどのレンズ鏡筒の前面に装着されるフィルターにおいて、フィルターレンズの表面に歪みが生じる問題を解消したフィルターを提供する。【構成】フィルター枠と、フィルター枠に嵌合されるフィルターレンズと、フィルター枠にねじ込んでフィルターレンズの周縁部を押圧することによりフィルターレンズを固定する押え環を具え、押え環がフィルターレンズの周縁部と当接する個所には樹脂部が形成され、押え環の樹脂部によりフィルターレンズの周縁部がフィルター枠に押圧されフィルターレンズが押え環とフィルター枠との間に固定されるよう構成したことを特徴とする。【選択図】図１

ワンタッチフィルター枠

【課題】カメラレンズ鏡筒前面に種々のフィルターを簡単、且つ迅速に装着、及び取り外すことができるワンタッチフィルター枠を提供する。【解決手段】カメラレンズ鏡筒３の最前部に固着可能なリング形状のアタッチメント枠２は、その外周部上に係合溝１２を有しており、アタッチメント枠２の係合溝１２に装着されたフィルター枠本体１はクリップ係合部に連繋されたクリップ係合解除ボタン１３ａ，１３ｂを指先で挟むことにより２カ所のクリップ係合部２１ａ，２１ｂが外れてフィルター枠本体１の取外し・交換動作が可能に構成されている。【選択図】図２

デジタルカメラ用のフィルター枠

【課題】ズームレンズや広角レンズをカメラレンズ鏡筒前面に装着してもケラレ現象が発生しないフィルター枠を提供する。 【解決手段】デジタルカメラのレンズ鏡筒最前部にアダプター枠を装着し、アダプター枠を介して大口径で薄型のフィルター枠をカメラレンズ鏡筒前面に簡単、且つ容易に装着したり脱着したりできるフィルター枠を提供する。 【選択図】図１

モータケース構造

(57)【要約】 【課題】 従来のモータケース構造は、ステータとケー スとが嵌合のみで組合わされていたため、ケースが熱膨 張した時は、ケースとステータとの間に隙間が形成さ れ、ステータからケースを介して放熱を行うことが不可 能となり、性能低下となっていた。 【解決手段】 本発明によるモータケース構造は、ステ ータ(1)の外周の軸方向に沿って形成された凹部(10)と 凸部(11)にアルミニウム鋳造によりケース(1)を形成 し、このケース(1)の内面はこの凹部(10)と凸部(11)に ならって形成され、隙間（Ｄ）形成時もステータ(3)と ケース(1)間の接触を保つ構成である。

収支日計処理装置、収支日計処理システム、及び収支日計処理プログラム

【課題】収支日計表を利用して、日々の経営計画を精度良く簡便に行うことができる収支日計処理装置を提供する。 【解決手段】本発明の収支日計処理装置１０は、勘定科目に関する日別の実績額から成る収支日計表１２０５を作成する収支日計表作成部１１と、収支日計表作成部１１により作成された過去の所定期間分の収支日計表を格納する帳票データベース１２と、帳票データベース１２に格納されている収支日計表を参照して、収支日計表に含まれる勘定科目のそれぞれについて、年間合計額に対する日別の実績額の比率から成る連環比率表を作成する連環比率表作成部１３と、連環比率表と来年度の予算額とに基づいて、勘定科目のそれぞれについて、来年度の日別の予算額を含む計画帳票を作成する計画帳票作成部１５と、を備えている。 【選択図】図１

回転止め構造

【課題】本発明は、被固定側の歯部を固定側の内歯部に噛合させることにより、被固定側を簡単に固定させることを目的とする。 【解決手段】本発明による回転止め構造は、固定側（１）の内歯部（２）に被固定側（３）の歯部（４）を噛合することにより、前記被固定側（３）を回転しない状態とする構成である。 【選択図】　　　　図１

Robotically-assisted surgical device, robotically-assisted surgery method, and system

A robotically-assisted surgical device assists robotic surgery with a surgical robot that includes at least one robot arm holding a surgical instrument. The robotically-assisted surgical device includes a processing unit and a display unit. The processing unit is configured to: acquire 3D data of a subject; acquire kinematic information regard to the robot arm; acquire information of an surgical procedure for operating the subject; acquire information regarding a position of at least one port which is to be pierced on a body surface of the subject; derive a 2D range on the body surface where errors are allowed for the piercing of the port based on the 3D data, the kinematic information, the information of the surgical procedure, and the position of the port; and cause the display unit to display the information regarding the position of the port and information indicating the 2D range.

フィルター

【目的】外枠の外周部は衝撃吸収機能をそなえ、外枠の内周部には関連部品を装着するための雌ネジを切ることを可能とするフィルターを提供する。【構成】デジタルカメラ、デジタルビデオカメラなどのレンズ鏡筒の前面に装着されるフィルターで、フィルターレンズとフィルターレンズを保持するレンズ保持枠とレンズ保持枠の外部側に配設された外枠からなるものであって、外枠を複数層の積層合成樹脂により構成し、外枠の外周部に位置する合成樹脂層をショアＡ４０〜９０の硬度を有する合成樹脂、外枠の内周部に位置する合成樹脂層をロックウエル硬度（ＨＲ）がＲ４０〜Ｒ１３０の合成樹脂で構成したことを特徴とする。【選択図】図１

フィルター

【目的】外枠がフィルターを何かにぶつけてもレンズを損傷することがない衝撃吸収機能を有するとともに、関連部品を装着するための雌ネジを切ることも可能とするフィルターを提供する。【構成】デジタルカメラ、デジタルビデオカメラなどのレンズ鏡筒の前面に装着されるフィルターで、フィルターレンズとフィルターレンズを保持するレンズ保持枠とレンズ保持枠の外周部に位置する外枠からなるものであって、外枠をロックウエル硬度（ＨＲ）がＲ４０〜Ｒ１３０の合成樹脂で構成したことを特徴とする。【選択図】図１

デジタルカメラ用のフィルター着脱機構

【課題】デジタルカメラの鏡筒最前部にあらかじめフィルター着脱機構に嵌合するフィルター装着部を有するアダプター枠が装着され、該アダプター枠に各種フィルターレンズを挟持したフィルター枠を簡単、且つ容易に交換して装着することができるフィルター着脱機構を提供する。 【解決方法】カメラのレンズ鏡筒最前部の内径側に設けられた雌ネジに螺合する雄ネジ部を有したアダプター枠は、その入射光側にフィルター装着部を有しており、該アダプター枠は予めレンズ鏡筒最前部の内径側に装着され、該アダプター枠を介して各種フィルター枠をレンズ鏡筒側に装着可能とし、該各種フィルター枠は前記アダプター枠に対して裏表構わず装着でき、且つ離脱可能なフィルター装着部をフィルター枠の両面に形成している。 【選択図】図１

Method of construcint boiling water type reactor plant

デジタルカメラ用の多機能付きフィルター枠

【課題】移動中や撮影中のレンズ鏡筒先端部を衝撃より守るための緩衝機能と、レンズ鏡筒先端部に装着されたフィルター枠本体を取外しする際にフィルター枠本体の外周カバー部材を指先で挟持して空回りさせることなく取外し操作が容易に行えるフィルター枠を提供する。 【解決手段】フィルター枠本体の外周部にはフィルター嵌着縁部と一体形成されたフィルター外周枠を形成し、該フィルター外周枠の外部側を比較的柔らかい熱硬化性エラストマー或いは熱可塑性エラストマーにて被覆して外周部カバー部材を形成し、該外周部カバー部材にて前記フィルター枠本体、並びにカメラレンズ鏡筒の衝撃緩衝機能を保有すると共にレンズ鏡筒先端部に装着されたフィルター枠本体を取外しする際にフィルター枠本体の外周カバー部材を指先で挟持して空回りさせることなく取外し操作が容易に行えるように構成した。 【選択図】図２

カメラ用のフィルター枠

【課題】ケラレ等を防止するレンズフードの取付け機構、及びケラレ等の防止効果のあるバヨネット構造のフード取付け構造の欠点を解消して、壊れにくく外観上見栄えのよいレンズフードの取付け機構を有するフィルター枠を提供する。 【解決手段】フィルター枠の外周部全体または一部分にレンズフード装着用の雄ネジ部を螺設し、該レンズフード装着用の雄ネジ部にレンズフードの装着用内径部に螺設したレンズフード雌ネジ部を螺合することでフィルター枠の外周部にレンズフードを着脱自在に取付けたカメラ用のフィルター枠。 【選択図】図１

配線基板集合体、配線基板及び配線基板の製造方法

【課題】切断時の損傷及び剥離の発生を抑制する配線基板集合体、配線基板及び配線基板の製造方法を提供する。【解決手段】配線基板集合体は、配線構造体と、配線構造体の表面の配線層を被覆し配線を保護するソルダーレジスト層１３０と、を有する。ソルダーレジスト層は、配線を保護するため配線構造体の表面を被覆するとともに、配線構造体の表面の切断領域ＣＲに対応して表面の所定領域を露出させるスリット１３２を備える。スリット１３２の縁部１３２ａに対応する最外絶縁層の縁部が波状に蛇行する。【選択図】図３

Image processing apparatus, image processing method and computer-readable storage medium storing program

An image processing apparatus includes an image acquisition unit, a setting unit, an image derivation unit, a luminance condition derivation unit and a display unit. The image acquisition unit acquires a first diffusion-weighted image of a first b value and a second diffusion-weighted image of a second b value. The setting unit sets a target diffusion coefficient and a third b value. The image derivation unit derives a virtual diffusion-weighted image of the third b value based on the target diffusion coefficient, the first diffusion-weighted image and the second diffusion-weighted image. The luminance condition derivation unit derives a luminance condition for displaying the virtual diffusion-weighted image based on the target diffusion coefficient and the third b value. The display unit displays the virtual diffusion-weighted image according to the luminance condition derived by the luminance condition derivation unit.