Japan (JA)
国・地域を選択してください。
非破壊検査｜X線源
X線源とは
X線検査では、図１のように「X線源」よりX線が照射され、検査対象物を通過し「X線検出器」へと入射します。X線が対象物を透過するとき検査対象物に遮られて減衰し、X線の透過率に応じて白黒の濃淡で画像が映し出されます。X線源では、主に真空管の一種であるX線管を使用しX線を発生させています。図２ではX線源におけるX線発生の仕組みを示します。X線管には陽極（プラス）と陰極（マイナス）の電極が組み込まれています。陰極（カソード）と陽極（アノード）に高電圧をかけると、カソードから高速に放出された電子がアノードに衝突し、X線が発生します。
図1 : X線源を使用したX線検査の構成例
図2 : X線源におけるX線発生の仕組み
管電流と管電圧
X線源は、X線管へと流す電流・電圧により、発生するX線の量（強度）や波長（エネルギー）が変化します。
・管電流（A）を上げることでX線の発生量が増え、X線画像の明度が明るくなる
・管電圧（V）を上げることでX線の波長が短くなり、物質を透過しやすくなる
物質によって透過に必要な管電圧（V）は変わるため、対象物に合わせて適切な電圧と電流の条件設定が必要となります。
管電流・出力（X線画像の明度）
管電圧（X線透過性）
マイクロフォーカスX線源
マイクロフォーカスX線源は、ミリフォーカスX線源と比較して焦点寸法（X線光源の大きさのこと）が小さい、マイクロメートルオーダーのX線源です。X線源における焦点寸法は、画像の解像度（分解能）に直結します。X線焦点寸法が大きいほど、高幾何学倍率撮影時の半影による輪郭ボケも大きくなり、X線焦点寸法が小さいほど、輪郭ボケの小さい高精細なX線画像が得られます。
マイクロフォーカスX線源は、高幾何学倍率時でもボケの少ない高精細なX線画像の取得が可能です。
焦点寸法の違いにおける特長比較
密封型マイクロフォーカスX線源
密封型は、本体が小型で装置への組み込みが容易なマイクロフォーカスX線源です。X線源発生部分が真空管に封止された設計であるため、お客様によるメンテナンスは不要です。一方で、X線管は使い切りとなるため、劣化と共にメーカーでの交換作業が必要となります。
開放型マイクロフォーカスX線源
開放型は、付帯設備が必要となりますが、密封型では成しえない高管電圧・高分解能な特性を有しています。また、カソード・アノード交換など消耗部品を定期的に交換することで、長期間継続使用が可能です。そのため、ダウンタイム（装置停止時間）の低減に貢献します。
関連製品
軟X線源
X線の中でも波長が長く、エネルギーの低い軟X線を発生するX線源です。小型・軽量であり、鉛を使わず樹脂板でX線の遮蔽が可能なため、硬X線よりも手軽に導入しやすいメリットがあります。透過性や精度は硬X線源より劣りますが、硬X線源ではエネルギーが強くX線が透過しすぎてしまう検査対象物や、小型かつ軟物質を小規模で検査する場合では、軟X線検査が特に有効です。
関連製品
その他の製品
「くるま・エレクトロニクス」「食品」「構造解析」「インフラ」「セキュリティ」をテーマに、応用例を交えながら最適な製品ラインアップをご紹介します。
試写のご案内
浜松ホトニクスは、試写を通じて非破壊検査における最適なソリューションを提案します。
浜松ホトニクスでは、お客様からの非破壊検査のご要望に対する事前評価として、各種X線源やセンサ、カメラによる試写を行っております。弊社は非破壊検査装置メーカーではないため、特定のメーカーの装置に偏らず最適な光源、検出器などの面からデバイス・装置の選定をお手伝いいたします。
また、最適なデバイスの紹介だけでなく、長年のビジネスで培った経験をもとに、撮影のコツやノウハウも含めた最適なソリューションを提案いたします。お気軽にお問い合わせください。
- Confirmation
-
It looks like you're in the . If this is not your location, please select the correct region or country below.
You're headed to Hamamatsu Photonics website for JP (Japanese). If you want to view an other country's site, the optimized information will be provided by selecting options below.
In order to use this website comfortably, we use cookies. For cookie details please see our cookie policy.
- Cookie Policy
-
This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in this cookie policy. By closing the cookie warning banner, scrolling the page, clicking a link or continuing to browse otherwise, you agree to the use of cookies.
Hamamatsu uses cookies in order to enhance your experience on our website and ensure that our website functions.
You can visit this page at any time to learn more about cookies, get the most up to date information on how we use cookies and manage your cookie settings. We will not use cookies for any purpose other than the ones stated, but please note that we reserve the right to update our cookies.
1. What are cookies?
For modern websites to work according to visitor’s expectations, they need to collect certain basic information about visitors. To do this, a site will create small text files which are placed on visitor’s devices (computer or mobile) - these files are known as cookies when you access a website. Cookies are used in order to make websites function and work efficiently. Cookies are uniquely assigned to each visitor and can only be read by a web server in the domain that issued the cookie to the visitor. Cookies cannot be used to run programs or deliver viruses to a visitor’s device.
Cookies do various jobs which make the visitor’s experience of the internet much smoother and more interactive. For instance, cookies are used to remember the visitor’s preferences on sites they visit often, to remember language preference and to help navigate between pages more efficiently. Much, though not all, of the data collected is anonymous, though some of it is designed to detect browsing patterns and approximate geographical location to improve the visitor experience.
Certain type of cookies may require the data subject’s consent before storing them on the computer.
2. What are the different types of cookies?
This website uses two types of cookies:
- First party cookies. For our website, the first party cookies are controlled and maintained by Hamamatsu. No other parties have access to these cookies.
- Third party cookies. These cookies are implemented by organizations outside Hamamatsu. We do not have access to the data in these cookies, but we use these cookies to improve the overall website experience.
3. How do we use cookies?
This website uses cookies for following purposes:
- Certain cookies are necessary for our website to function. These are strictly necessary cookies and are required to enable website access, support navigation or provide relevant content. These cookies direct you to the correct region or country, and support security and ecommerce. Strictly necessary cookies also enforce your privacy preferences. Without these strictly necessary cookies, much of our website will not function.
- Analytics cookies are used to track website usage. This data enables us to improve our website usability, performance and website administration. In our analytics cookies, we do not store any personal identifying information.
- Functionality cookies. These are used to recognize you when you return to our website. This enables us to personalize our content for you, greet you by name and remember your preferences (for example, your choice of language or region).
- These cookies record your visit to our website, the pages you have visited and the links you have followed. We will use this information to make our website and the advertising displayed on it more relevant to your interests. We may also share this information with third parties for this purpose.
Cookies help us help you. Through the use of cookies, we learn what is important to our visitors and we develop and enhance website content and functionality to support your experience. Much of our website can be accessed if cookies are disabled, however certain website functions may not work. And, we believe your current and future visits will be enhanced if cookies are enabled.
4. Which cookies do we use?
There are two ways to manage cookie preferences.
- You can set your cookie preferences on your device or in your browser.
- You can set your cookie preferences at the website level.
If you don’t want to receive cookies, you can modify your browser so that it notifies you when cookies are sent to it or you can refuse cookies altogether. You can also delete cookies that have already been set.
If you wish to restrict or block web browser cookies which are set on your device then you can do this through your browser settings; the Help function within your browser should tell you how. Alternatively, you may wish to visit www.aboutcookies.org, which contains comprehensive information on how to do this on a wide variety of desktop browsers.
5. What are Internet tags and how do we use them with cookies?
Occasionally, we may use internet tags (also known as action tags, single-pixel GIFs, clear GIFs, invisible GIFs and 1-by-1 GIFs) at this site and may deploy these tags/cookies through a third-party advertising partner or a web analytical service partner which may be located and store the respective information (including your IP-address) in a foreign country. These tags/cookies are placed on both online advertisements that bring users to this site and on different pages of this site. We use this technology to measure the visitors' responses to our sites and the effectiveness of our advertising campaigns (including how many times a page is opened and which information is consulted) as well as to evaluate your use of this website. The third-party partner or the web analytical service partner may be able to collect data about visitors to our and other sites because of these internet tags/cookies, may compose reports regarding the website’s activity for us and may provide further services which are related to the use of the website and the internet. They may provide such information to other parties if there is a legal requirement that they do so, or if they hire the other parties to process information on their behalf.
If you would like more information about web tags and cookies associated with on-line advertising or to opt-out of third-party collection of this information, please visit the Network Advertising Initiative website http://www.networkadvertising.org.
6. Analytics and Advertisement Cookies
We use third-party cookies (such as Google Analytics) to track visitors on our website, to get reports about how visitors use the website and to inform, optimize and serve ads based on someone's past visits to our website.
You may opt-out of Google Analytics cookies by the websites provided by Google:
https://tools.google.com/dlpage/gaoptout?hl=en
As provided in this Privacy Policy (Article 5), you can learn more about opt-out cookies by the website provided by Network Advertising Initiative:
http://www.networkadvertising.org
We inform you that in such case you will not be able to wholly use all functions of our website.
Close