2015年世界計量日主題為“計量與光”。
　　我們之所以選擇這個主題，是為了與聯合國教科文組織舉辦的“國際光學年”和“2015光學技術”年會相呼應。
　　這是一個全球性的倡議，旨在突出光和光學技術在我們日常生活中扮演著關鍵角色，以及對未來社會的可持續發展起著重要作用。
　　計量在光學技術的實際應用中起著關鍵作用，同時，光也是許多尖端測量技術中最核心的元素。
　　我們舉辦一年一度的“世界計量日”活動，是為了紀念1875年5月20日十七國代表簽署了“米制公約”。
　　“米制公約”為科學研究、工程測量、商貿結算以及社會中的測量活動設立了一個全球化合作的框架。
　　“公約”的初衷是在全球范圍內保證測量結果的一致性，即便在今天，量值統一也同樣重要。
　　國際計量局(BIPM)和國際法制計量組織(OIML)共同策劃了“世界計量日”活動。我們希望您喜歡這個網站并邀請貴國、相關計量機構與我們一起共同慶祝這一重要的日子。

　　The theme for World Metrology Day 2015 is ‘Measurements and Light’.
　　The topic was chosen to align with the UNESCO International Year of Light and Light-based technologies 2015 (IYL 2015), a global initiative designed to highlight the key role light and optical technologies play in our daily lives and their importance for our future and for the sustainable development of the society we live in.
　　Metrology plays a central role in enabling the application of light-based technologies, and in turn, light is at the heart of many of the most important new elements of leading-edge measurement technologies.
　　World Metrology Day is an annual celebration of the signature by representatives of seventeen nations of the Metre Convention on 20 May 1875. The Convention set the framework for global collaboration in the science of measurement and in its industrial, commercial and societal applications. The original aim of the Metre Convention - the world-wide uniformity of measurement - remains as important today as it was in 1875.
　　The World Metrology Day project is realized jointly by the BIPM and the OIML. We hope that you enjoy this site and that your Country or Metrology Organization will join us and participate in this year's event.

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