Optical Filter-Introduction

     Optical filters, a seemingly minor technology, may sound unfamiliar to many, yet they are embedded in our daily lives and have a profound impact across various industries.


  • In the field of biomedical testing, optical filters enhance the signal-to-noise ratio, thereby improving image clarity and diagnostic accuracy.
  • In consumer electronics such as smartphones and tablets, optical filters improve image quality and the accuracy of facial recognition.
  • In agricultural technology, specific wavelengths of light are filtered to promote plant growth and increase crop yields. For example, exposure to red light can encourage flowering and fruit development, while blue light enhances plants' resilience to adverse environmental conditions.
  • Remote sensing and aerial imaging technologies utilize near-infrared spectral signals to identify vegetation and water bodies over large areas, aiding in environmental monitoring.
  • In surveillance camera systems, the use of specific optical filters can enhance the capture of infrared light, providing clearer images in nighttime or low-light conditions.

     The widespread application of optical filters spans various fields, subtly influencing our quality of life and rendering our world clearer and safer, thereby achieving a perfect integration of technology and daily living.


     After exploring the extensive applications of optical filters, it is important to note the numerous challenges faced during their fabrication. While filters play a critical role in consumer electronics, medical imaging, and environmental monitoring, their production process is complex. From material selection to thin-film coating techniques, each step requires precise control to ensure the optical performance and durability of the filters. Additionally, finding ways to reduce costs while maintaining quality poses a significant challenge in the production process. Understanding these challenges is crucial for enhancing the technological level and market competitiveness of optical filters.


     To address these challenges, we have developed several effective solutions. Through continuous technological innovation and the optimization of production processes, we can enhance the quality of optical filters while effectively controlling costs. Below are some specific strategies we offer to tackle these critical issues.


  • Stable Coating Technology

Stable coating technology is essential for the fabrication of optical filters. The use of high-quality coating equipment ensures machine stability and excellent repeatability, thereby enhancing product reliability.

【技術專刊】大永真空「活化反應濺鍍鍍膜機(ARMS)」經客戶驗證,具備低溫製程的能力,在塑膠上鍍出多層膜再也不是挑戰!
◆ 大永真空官方FB_歡迎各位先進參觀打樣_ICP濺鍍光學

  • Precision Control

Ensuring product quality necessitates precise control. Utilizing optical monitoring systems for real-time observation allows for immediate adjustments during the coating process. Dah Young's CoatingGuard continuously provides feedback on the optical characteristics during coating and promptly corrects process deviations to ensure the results meet specifications.

◆ 大永真空官方FB_光學監控_即時監控與精密分析

  • Mass Production Technology

Dah Young's FAST can predict the distribution of coating thickness prior to production, addressing issues of uneven film thickness. This technology is applicable to specialized product shapes and large-area coatings, ensuring consistent optical performance of the filters and thereby improving product quality and enhancing market competitiveness

【技術專刊】大永真空「活化反應濺鍍鍍膜機(ARMS)」專門為運動眼鏡產業開發的設備:具備獨家【公自轉機構】讓鍍膜更均勻,精準控制誤差在10nm以內,避免彩虹條紋發生!

◆ 曲面鍍膜(膜厚分佈模擬與調製)