{"id":622,"date":"2016-04-25T10:07:44","date_gmt":"2016-04-25T14:07:44","guid":{"rendered":"https:\/\/designinglight.com\/?p=622"},"modified":"2016-04-25T10:07:44","modified_gmt":"2016-04-25T14:07:44","slug":"mit-creates-incandescent-lamp-as-efficient-as-leds","status":"publish","type":"post","link":"https:\/\/designinglight.com\/?p=622","title":{"rendered":"MIT Creates Incandescent Lamp As Efficient as LEDs"},"content":{"rendered":"

Researchers at MIT and Purdue University have demonstrated an incandescent lamp with an efficacy of 6.6 percent, and with a potential efficacy as high as 40 percent. The paper was published in the April issue of Nature Nanotechnology<\/a>. The demonstration compares favorably to current low efficacy fluorescent and LED lamps, while the upper limit is double the current maximum efficacy for fluorescents and LEDs.<\/p>\n

The lamp uses a flat filament, rather than the coil of typical incandescent lamps, that is held between two plates of glass with a coating similar to a dichroic reflector, which the researchers call a photonic crystal. The plates permit visible light to pass through them, but reflect the infrared light back to the filament further heating it and producing more light. This idea has been with us for a while now, with most major lamp manufacturers producing some version of an IR halogen lamp. The main difference is that the new dichroic-like coating is much more efficient than the coatings currently in use and works at a much wider range of wavelengths and angles.<\/p>\n

This is great news for those of us who haven\u2019t bought into the idea that LEDs will make everyone happy, make all of our children above average, and help the country win the war. Between the low LPDs of the current versions of Standard 90.1 and other energy conservation codes, and the high efficacy of LEDs, most of us are compelled to use LEDs as the primary light source in many of our projects whether we want to or not. LEDs are great, but they\u2019re not the best design choice for every application. As my students and readers of my book know, I regard energy efficiency as an important consideration in any lighting design, but not the primary goal. My first goal is to understand and deliver the desired look and feel of the space I\u2019m lighting while providing appropriate light levels. My second goal is to explore the possible techniques and technologies that I can use to achieve my first goal. My third goal is to use the most energy efficient option from among the best options.<\/p>\n

As a designer whose primary concern is the quality of the living\/working\/shopping environment I\u2019m helping to create, I want to have as many tools at my disposal as possible, not just LEDs. At this point, it seems that lamp and fixture manufacturers are fully embracing the LED with very little attention paid to other light sources, with the possible exception of the OLED. If this experimental lamp becomes commercialized, we\u2019d be able to use inexpensive, tried-and-true dimming technologies that deliver the performance we want without any of the problems associated with fluorescents and LEDs (flickering, flashing, dimming curves that are too flat or too steep, inability to dim smoothly to 0%, high cost, etc.).<\/p>\n

This lamp wouldn\u2019t be a solution for all lighting situations of course, in the same way that the LED isn\u2019t a solution for all situations, but it would allow us to have true incandescent light in any application that called for it without running afoul of energy conservation codes.<\/p>\n","protected":false},"excerpt":{"rendered":"

Researchers at MIT and Purdue University have demonstrated an incandescent lamp with an efficacy of 6.6 percent, and with a potential efficacy as high as 40 percent. The paper was published in the April issue of Nature Nanotechnology. The demonstration compares favorably to current low efficacy fluorescent and LED lamps, while the upper limit is … Continue reading MIT Creates Incandescent Lamp As Efficient as LEDs<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[13],"tags":[45],"class_list":["post-622","post","type-post","status-publish","format-standard","hentry","category-lamps","tag-new-technology"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p4gZSw-a2","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":1009,"url":"https:\/\/designinglight.com\/?p=1009","url_meta":{"origin":622,"position":0},"title":"White House to Relax Energy Efficiency Rules for Light Bulbs – The New York Times","author":"Jason Livingston","date":"September 10, 2019","format":false,"excerpt":"In 2007 Congress passed the Energy Independence and Security Act (EISA) with the goal of increasing energy efficiency across the economy. \u00a0Part of EISA has affected the lighting industry in the form of mandated efficacy of light sources. \u00a0The initial efficacy rules targeted A-Lamps (standard household light bulbs) and set\u2026","rel":"","context":"In "Codes"","block_context":{"text":"Codes","link":"https:\/\/designinglight.com\/?cat=5"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":635,"url":"https:\/\/designinglight.com\/?p=635","url_meta":{"origin":622,"position":1},"title":"IALD Responds To DOE Energy Conservation Program","author":"Jason Livingston","date":"May 16, 2016","format":false,"excerpt":"As I posted in March, the Emerging Technologies Program of the DOE\u2019s Building Technologies Office asked for pubic comments on extending the minimum efficacy of incandescent lamps used in general illumination applications, specifically: Incandescent lamps that currently do not have a suitable replacement lamp meeting or exceeding 45 lumens per\u2026","rel":"","context":"In "Lamps"","block_context":{"text":"Lamps","link":"https:\/\/designinglight.com\/?cat=13"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":98,"url":"https:\/\/designinglight.com\/?p=98","url_meta":{"origin":622,"position":2},"title":"Basking in a New Glow","author":"Jason Livingston","date":"February 13, 2014","format":false,"excerpt":"The New York times has an \"I Heart LEDs\" article in today's paper that leaves out some important information about evaluating them. \u00a0Here are some additional thoughts. The government hasn't done a very good job of publicizing or explaining that the Energy Independence and Security Act of 2007\u00a0(EISA) set minimum\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"Lighting Facts Label","src":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2014\/02\/LED_LF_Label_Example.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2014\/02\/LED_LF_Label_Example.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2014\/02\/LED_LF_Label_Example.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2014\/02\/LED_LF_Label_Example.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":502,"url":"https:\/\/designinglight.com\/?p=502","url_meta":{"origin":622,"position":3},"title":"Use of LED Lamps To Improve Health","author":"Jason Livingston","date":"September 12, 2015","format":false,"excerpt":"Today's New York Times has an article on several manufacturers' new LED products that are intended to improve wakefulness, sleep, focus, and other aspects of daily life and health. The\u00a0article appears on\u00a0both the business and technology pages, but not on the health page, and\u00a0I think that's appropriate. \u00a0Although there are\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3407,"url":"https:\/\/designinglight.com\/?p=3407","url_meta":{"origin":622,"position":4},"title":"New Energy Efficiency Rules Ban Incandescent Light Bulbs: What to Know – The New York Times","author":"Jason Livingston","date":"August 2, 2023","format":false,"excerpt":"We've known for a while that the day was coming, and now it's here. \u00a0Effective yesterday retailers will no longer be permitted to sell most incandescent lamps (which includes halogen lamps) in the U.S. \u00a0There are some exceptions for things like bug lights, but not many. Replacement lamps for sale\u2026","rel":"","context":"In "Lamps"","block_context":{"text":"Lamps","link":"https:\/\/designinglight.com\/?cat=13"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3544,"url":"https:\/\/designinglight.com\/?p=3544","url_meta":{"origin":622,"position":5},"title":"147 Countries Agree to Eliminate Fluorescent Lamps by 2027","author":"Jason Livingston","date":"December 3, 2023","format":false,"excerpt":"The Minamata Convention on Mercury, a program of the United Nations with delegates from at least 150 countries, is dedicated to improving global health by phasing out the use of mercury in manufacturing, banning new mercury mines, and limiting mercury emissions. \u00a0 Last month, 147 countries (out of a global\u2026","rel":"","context":"In "Lamps"","block_context":{"text":"Lamps","link":"https:\/\/designinglight.com\/?cat=13"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=622"}],"version-history":[{"count":1,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/622\/revisions"}],"predecessor-version":[{"id":623,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/622\/revisions\/623"}],"wp:attachment":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}