IES燈光文件 IES Files

What’s IES files?
什麼是IES files?

　　如果你在燈光專業產業工作，或是生產IES燈光文件的工廠，
那麼你一定熟悉IES燈光文件這個術語。

但是，對於一般大眾來說，IES燈光文件可能還是一個陌生的名詞。

在現代的照明設計中，要實現理想的照明效果，除了設計師的專業技能外，還需要依賴一些關鍵的工具和資源。

其中，IES燈光文件是一個至關重要的工具，它為設計師提供了寶貴的光源資訊，幫助他們更好地掌握照明設計的方向和效果。

那麼，什麼是IES燈光文件呢？

If you work in the lighting industry or in a factory producing IES lighting files, then you are likely familiar with the term ‘IES lighting files.’

However, for the general public, IES lighting files may still be an unfamiliar term.

In modern lighting design, achieving the desired lighting effects requires not only the expertise of designers but also relies on some key tools and resources.

Among them, IES lighting files are a crucial tool, providing valuable information about light sources to designers, helping them better understand the direction and effects of lighting design.

So, what exactly are IES lighting files?

　　IES燈光文件（Illuminating Engineering Society燈光工程學會）
是一種照明行業標準，用於描述光源的光照分佈。

這些文件提供了特定照明設備散發出的光線亮度和光線衰減的圖解，也就是配光曲線。

它們考慮了光線的反射表面、燈泡的形狀以及可能發生的透鏡效應，以提供逼真的光照效果。

對於確保照明設計的準確性和效果來講，IES燈光文件至關重要。

IES lighting files (Illuminating Engineering Society) are a lighting industry standard used to describe the light distribution of light sources.

These files provide graphical representations of the brightness and light attenuation of specific lighting fixtures, known as photometric curves.

They take into account factors such as reflective surfaces, the shape of the bulb, and potential lens effects to provide realistic lighting effects.

For ensuring the accuracy and effectiveness of lighting designs, IES lighting files are essential.

使用專業軟體開啟IES文檔(To open an IES file using professional software)

Why the IES files is important?
為什麼IES文件很重要？

　　IES燈光文件最大的優勢是可以快速比較不同燈具和光源的效果。

測試數據幫助你評估燈光的性能和效果，通過比較不同燈光文件的數據，並根據照明設計目標，選擇最適合的照明方案，合理放置燈具，調整照明角度和亮度，優化燈光布局以實現更好的照明效果。

說了這麼多，我們該怎麼使用IES燈光文件來提升照明效果呢？

這其實是一個相對簡單的過程。

The biggest advantage of IES lighting files is the ability to quickly compare the effects of different luminaires and light sources.

Test data helps you evaluate the performance and effects of lighting.
By comparing the data from different lighting files and selecting the most suitable lighting solution based on lighting design goals, you can optimize the placement of luminaires, adjust lighting angles and brightness, and optimize the lighting layout to achieve better lighting effects.

With that said, how do we use IES lighting files to improve lighting effects?
This is actually a relatively simple process.

防眩指數計算Unified Glare Rating

燈具參數 Luminaire parameters

配光卡式座標圖 Cartesian diagram

配光圓錐圖 Cone diagram

配光強度分佈圖Luminous intensity distribution diagram

How to use IES files?
如何使用IES檔案?？

　　首先，你需要獲取所需的IES燈光文件，這些文件通常可以從照明設備的製造商網站上下載。下載後，將文件導入燈光模擬軟件中，並將其應用於相應的燈具。

使用燈光模擬軟件，可以幫助設計師在設計階段模擬和預覽照明效果。

通過導入適當的燈光文件，你可以更真實地模擬不同燈光條件下的照明效果，從而提升設計的準確性和效果。

Firstly, you need to obtain the required IES lighting files, which are typically available for download from the manufacturer’s website of the lighting fixtures.

After downloading, import the files into lighting simulation software and apply them to the corresponding luminaires.

Using lighting simulation software helps designers simulate and preview lighting effects during the design stage. By importing the appropriate lighting files, you can more realistically simulate the lighting effects under different lighting conditions, thereby improving the accuracy and effectiveness of the design.

燈光模擬圖Lighting simulation Rendering

燈光偽色圖Lighting false color Rendering

Can IES files be edited by myself?
IES檔可以自行編輯嗎？

　　我們強烈建議不去修改編輯IES文件。它們是標準化文件，包含描述燈具光分佈模式的光度資料。該數據是透過特定測試程序測得的，通常以ASCII文本文件的格式提供。

IES檔案中任何參數數字皆為該燈具的重要數據，如光源分佈、衰減、方位座標等等的，如果外行人去進行修改錯誤，那就會失去了燈光模擬真實性的意義了。

但是，您可以將IES檔案套用到照明設計軟體內，可以進行燈具的流明值進行修正，降低功率和照明指向性等參數。

We strongly advise against modifying or editing IES files.
They are standardized files containing photometric data describing the light distribution pattern of a luminaire. This data is obtained through specific testing procedures and is typically provided in the format of ASCII text files.

Every parameter number in an IES file is crucial data for the luminaire, including light distribution, attenuation, directional coordinates, and so on. If someone unfamiliar with lighting design were to attempt modifications, it could compromise the authenticity of the lighting simulation.

However, you can apply IES files within lighting design software to adjust parameters such as luminaire flux, power reduction, and lighting directionality.

配光強度 Luminous intensities

使用文字文件檔案開啟Open using text file

In conclusion
總結

　　在設計的過程中，對於空間的亮度瓦數選擇，要布置幾個燈具，以及燈光究竟會呈現怎麼樣的效果，相信大家都一定有許多疑問。

但如今有了IES檔案，我們可以事先清楚了解選擇的燈具、放置的數量與位置，是否可以滿足整體預期，在做設計時也可以更加放心的期待作品呈現。

各位要了解，每一款燈的IES就相當於燈具的身分證，是獨一無二的存在，即使選擇兩種相同角度、瓦數的燈具，但是出光效果也是截然不同的，燈具的結構、內縮程度、透鏡品牌等等，都會影響到IES的測算結果。

所以既然在前期有委託燈光設計師參與設計，並提供了燈光模擬報告，
那最後盡量購買燈光設計師選擇的燈具，這樣才能達到模擬跟完工時的畫面呈現一致。

總的來說，IES燈光文件是照明設計中不可或缺的工具。

它提供了燈光的精確分佈和亮度數據，使照明設計師能夠更好地理解燈光文件的結構和內容，選擇合適的燈光文件，使用燈光模擬軟件，優化燈光布局和評估測試數據，實現更好的照明設計，還提供關於能源使用和效率的信息，幫助設計師更好地控制和管理照明系統。

希望這篇文章能幫助到各位的讀者。

In the process of design, there are often many questions regarding the selection of brightness wattage for a space, the number and placement of luminaires, and how the lighting will ultimately affect the overall atmosphere.

However, with IES files available now, we can have a clear understanding in advance of the selected luminaires, the quantity and placement, and whether they can meet the overall expectations. This allows designers to proceed with more confidence in the expected outcome of their designs.

It’s important to understand that each luminaire’s IES file is like its unique identity card, representing its distinct light output characteristics.
Even if two fixtures have the same angle and wattage, their light distribution can be vastly different due to factors such as luminaire structure, lens brand, and UGR design, all of which can influence the calculation results of the IES file.

Therefore, if a lighting designer has been involved in the design process and has provided lighting simulation reports, it is advisable to purchase the luminaires recommended by the lighting designer. This ensures consistency between the simulated and final results.

In summary, IES lighting files are indispensable tools in lighting design.

They provide precise distribution and brightness data, enabling designers to better understand the structure and content of lighting files, select appropriate ones, use lighting simulation software to optimize lighting layouts, evaluate test data, and achieve better lighting designs. They also provide information about energy usage and efficiency, helping designers better control and manage lighting systems.

I hope this article can help all readers.