視頻會議室燈光設計簡介(英文版)-資料下載頁
2025-06-25 22:13本頁面
【正文】 ed to create a prehensive guide beyond what we have had available in the pro AV industry to date. In addition, an IESNA emended Practice will be developed that provides even more depth and background based on the information in the design guide that should be pleted in the next couple of years.While the design guide isn39。t offered as a standard, it does contain prehensive criteria that can be used as pass/fail parisons for videoconferencing lighting applications. IESNA hopes that the new guide will provide lighting, AV, architectural, and electrical designers with a mon basis for videoconferencing room lighting design.SEEING THE DIFFERENCE In the early days of videoconferencing, users were often just happy to have a picture that was being transmitted hundreds or thousands of miles. It wasn39。t until they used the technology for a while that users began to appreciate the difference between a “good” and a “bad” picture, which frequently had to do with lighting.The video captures above show a cool white fluorescent overhead lighting scheme in the top photo pared to a warm white fluorescent directional lighting scheme in the bottom photo.Although facial features can be discerned in both cases, notice how much visual information is “missing” in the overhead lighting arrangement due to shadows.LIGHT DISTRIBUTION IN VIDEOCONFERENCE ROOMS Below is a short checklist of lighting design considerations for a videoconference system and space. Refer to the IESNA Design Guide for plete detailed criteria and background information. Consider both key and fill light sources. The key light should be in the 400 to 500 lux range when measured with a vertically oriented light meter. Lamps of consistent color temperature should be used throughout the room that are patible with the camera. The typical choice would be fluorescent lamps rated 3,000 K to 3,500 K. Be sure that back and side walls are evenly lit at about the same level as the participants (this may need to vary depending on how light or dark the finish color is). Select solid, muted color wall finishes that are in the middle range of light reflectance value. Select a table finish that39。s a light, neutral color. Use large, directional luminaires for key lighting where possible to reduce glare for the participants. Spot fixtures may be required for presenters next to projected displays. Consider the type of display being used. Projected images require lower light levels at the screen than directview displays. Avoid indirect lighting schemes when projected displays are being used. Provide zoned, dimmable lighting control with an AV system interface. Put any decorative light fixtures on a separate zone so that they can be turned off during a videoconference. Tim Cape is a contributing editor for Pro AV, the principal consultant for Atlantabased technology consulting firm Technitect LLC, and coauthor of “AV Best Practices,” published by InfoComm International. He39。s an instructor for the InfoComm International Audiovisual Design School and an active member of the consultant39。s councils for both InfoComm International and NSCA. Contact him at 6 /
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