Provision of comfortable use of medical endoscopes and light sources based on tungsten-halogen incandescent lamps

1996 ◽  
Vol 30 (3) ◽  
pp. 151
Author(s):  
Sosnov
Keyword(s):  
Light Sources ◽  
Incandescent Lamps

ENERGY EFFICIENT LIGHTING OF PUBLIC PREMISES

2021 ◽  
pp. 54-56
Author(s):  
E. A. Kuznetsov ◽  
N. P. Nesterkina ◽  
Yu. A. Zhuravleva ◽  
S. A. Mikaeva
Keyword(s):  
Educational Institution ◽  
Light Output ◽  
Light Flux ◽  
High Energy ◽  
Educational Institutions ◽  
Energy Costs ◽  
Light Sources ◽  
Fluorescent Lamps ◽  
High Level ◽  
Incandescent Lamps

The article provides a technical and economic comparison of costs when covering 10 classrooms of a general educational institution with LED and fluorescent lamps for a period of 10 years. The main advantage of led light sources is the high level of light output compared to traditional light sources. Replacing incandescent lamps and gas-discharge ICS with led ICS can significantly reduce energy costs. Currently, led ICS are increasingly replacing traditional ICS due to their high energy efficiency and safety. For comparison, luminescent lamps LVO04-4x14-031 and LED lamps DVO12-45-003 produced by JSC “Ardatovsky lighting plant” with a comparable light flux and light distribution were selected. The number of lamps in the 65 m2 auditorium was chosen based on the normalized illumination of 500 Lux on a horizontal work surface (0.8 m). The calculation of the number of lamps that meet all the requirements for lighting in General and higher educational institutions was carried out in the DiaLux 4.13 program. According to preliminary calculations, lighting with led lamps will reduce energy costs over 10 years by 2.16 times compared to fluorescent lamps. The maximum expenses are spent on the purchase of new led lamps. This is mainly due to the higher price of led lighting devices compared to fluorescent ones.

New generation of medical light sources based on tungsten halogen incandescent lamps

1994 ◽  
Vol 28 (6) ◽  
pp. 355-362
Author(s):  
A. A. Churkin ◽  
M. M. Veprintseva ◽  
Yu. N. Filippovskii ◽  
A. B. Pokrovskii ◽  
P. M. Rudakov
Keyword(s):  
Light Sources ◽  
New Generation ◽  
Incandescent Lamps

Application of LED in Marine Fishery

2013 ◽  
Vol 765-767 ◽  
pp. 213-216
Author(s):  
Wen Qing Shi ◽  
Zheng Ye Xiong ◽  
Yong Qiang Li ◽  
Cun You Huang
Keyword(s):  
High Energy ◽  
Economic Benefits ◽  
Metal Halide ◽  
Light Sources ◽  
Market Demand ◽  
Led Light ◽  
Marine Fishery ◽  
Incandescent Lamps ◽  
Metal Halide Lamps ◽  
Chinese Marine

Aiming at the high energy-consuming characteristics of Chinese marine fishery, the application of LED in Chinese marine fishery is analyzed. It has remarkable energy-saving effect if the fishing style of trawling is replaced by light-seine fishing, and the gathering-fish lamps of metal halide lamps or incandescent lamps are replaced by LED light sources. The conversion of the trawlers to light-seine vessel and widespread use of LED light sources will lead to cut down energy consumption and increase the economic benefits. Based on rough calculation, it can make Chinese fisherfolk increase income about hundreds of millions of dollars and reduce more than millions of tons CO2 emission if the conversion of the trawlers to light-seine vessel and the replacement of metal halide lamps or incandescent lamps to LED light sources can reach 20% of all. Moreover, LED light source can use for general lighting purpose in marine fishery. All of these will cause the development of the correlative industries. For instance, the market demand of LED is very vast.

LASER TECHNOLOGY IN PEACE AND WAR

2004 ◽  
Vol 18 (26) ◽  
pp. 3373-3380
Author(s):  
N. BLOEMBERGEN
Keyword(s):  
Data Storage ◽  
Laser Machining ◽  
Light Sources ◽  
Fiber Optic Communications ◽  
Incoherent Light ◽  
High Degree ◽  
The Military ◽  
Incandescent Lamps ◽  
Peace And War ◽  
Very High

Lasers emit light with a very high degree of monochromaticity, directionality and intensity. They can produce much higher intensities than incoherent light sources, such as incandescent lamps, fluorescent tubes and arcs. The first operating laser was realized in 1960, and much early research was funded by military agencies, but at the present time the commercial laser market is four times as large as the military market. Most applications of lasers are for peaceful purposes. Among the most important of these are fiber-optic communications and laser surgery. Other applications include laser printing, laser machining, construction alignment, and data storage on CD disks. Some military uses of lasers are also reviewed.

scholarly journals Artificial sources of light used in photomedicine: history of discovery

2019 ◽  
Keyword(s):  
Carbon Dioxide Laser ◽  
Artificial Light ◽  
Light Sources ◽  
Sources Of Information ◽  
Military Engineer ◽  
Treatment And Prevention ◽  
Archival Documents ◽  
History Of ◽  
Russian Military ◽  
Incandescent Lamps

Introduction. The history of the development of photomedicine over the past one and a half years is directly related to the history of the development of artificial light sources. And the medical direction of using these sources, as befits the light, has always been extremely bright. The purpose of this study was to familiarize doctors, scientists, engineers working in the field of photomedicine, with the creators of artificial sources of the light that is used for the rehabilitation, diagnosis, treatment and prevention of the most common human diseases. Materials and methods. Sources of information were archival documents of scientific libraries, scientific journals, and conference proceedings. The search depth was almost 160 years. Results. As a result of this work, the names of three outstanding inventors of the first incandescent lamps born in the same 1847 and giving people artificial sun were mentioned again (Russian engineer Alexander Nikolaevich Lodygin, Russian military engineer Pavel Nikolaevich Yablochkov and American electrical engineer Thomas Alva Edison) . The work of the first arc lamps was based on research by the Russian inventor V.V. Petrov and the English naturalist G.Devi. As a result of complex experiments, the Russian physicist S.I. Vavilov discovered in 1924 that the efficiency of luminescent substances is much higher than the efficiency of incandescent lamps. The Nobel laureates of 1964 for fundamental work in the field of quantum electronics, which led to the creation of generators and amplifiers of a new type - masers and lasers, became the American physicist C. Townes and Soviet physicists N.G. Basov and A.M. Prokhorov. In 1960, the laser era began with the light arm of Theodor Harold Meiman, who created the first ruby-crystal laser operating at a wavelength of 694.3 nm. Then A. Javan, W. Bennet and D. Herriot created a gas (helium-neon) laser. In 1962, a semiconductor laser was created by a group of American (B.Lex, U. Dumke, M.Naten) and independently Soviet scientists (B.M. Vul and others). A carbon dioxide laser (molecular) was created in 1964 by K. Patel. A dye laser was created in 1966 by P. Sorokin and J. Lancard. The “father” of LEDs is considered by the whole world to Nick Holonyak, who in 1962 created the world’s first GaAsP luminescent diode emitting in the red spectrum. Findings. In the process of evolution of artificial light sources (from incandescent lamps, fluorescent lamps to lasers and LEDs), phototherapy methods were also improved.

scholarly journals The light color quality of LED operating at winter temperatures

2019 ◽  
Vol 11 (4) ◽  
pp. 112 ◽  
Author(s):  
Przemysław Tabaka ◽  
Pawel Rozga
Keyword(s):  
Solid State ◽  
Operating Temperature ◽  
Solid State Lighting ◽  
Light Sources ◽  
Led Light ◽  
Fluorescent Lamps ◽  
Color Rendering ◽  
Incandescent Lamps ◽  
Colour Rendering

The paper presents the results of calculations of colorimetric parameters of LED sources operating at a temperature range from -25oC to 25oC. The chromaticity coordinates and color rendition quality parameters were calculated on the basis of registered spectral distributions of radiation. For individual LED chromaticity shift is illustrated at CIE 1931 x,y diagram with 3 step and 7 step MacAdam ellipses. Full Text: PDF ReferencesJ. P. Freyssinier, D. Frering, J. Taylor, N. Narendran, and P. Rizzo, Reducing lighting energy use in retail display windows. Sixth International Conference on Solid State Lighting, Proceedings of SPIE 6337, 63371L (2006). CrossRef Aman, M. M., et al., 2013. Analysis of the performance of domestic lighting lamps, Energy Policy, CrossRef E. Elijošiute, J. Balciukevičiute, G. Denafas, Life cycle assessment of; compact fluorescent and incandescent lamps: Comparative analysis. Environ Res. Eng. Manag. 61 (3), pp. 65-72, (2012), CrossRef D. Czyzewski, LED substitutes of conventional incandescent lamps Przeglad Elektrotechniczny R. 88, No. 11 (2012), CrossRef P. Tabaka, P. Rozga, Assessment of methods of marking LED sources with the power of equivalent light bulb, ulletin of the Polish Academy of Sciences. Technical Sciences, Vol. 65, No. 6, (2017) CrossRef I. Fryc, P. Jakubowski, K. Kołacz, Analysis of optical radiation parameters of compact discharge HID lamps and LED COB modules used for illuminating shop windows, Przeglad Elektrotechniczny,R. 93, No 11, (2017); pp. 186-189, CrossRef T. Kawabata, Y. Ohno; Optical measurements of OLED panels for lighting applications, pp 1176-1186 Jun 2013, Journal of Modern Optics, Vol. 60, 2013 Issue 14 CrossRef W. Żagan, Conditions necessary to replacing the conventional lamps by energy-saving lamps, Przeglad Elektrotechniczny R. 85, No. 5, pp. 100-104, (2009). DirectLink P. Tabaka; Influence of Ambient Temperature on Colour Properties of Low-Pressure Fluorescent Lamps, Light & Engineering, Vol. 23; No. 2; (2015). DirectLink W. R. Ryckaert, et al., Linear LED tubes versus fluorescent lamps: An evaluation. Energy Build. 49, pp. 429-436. CrossRef M. Zalesinska, J. Zablocka, K. Wandachowicz, Evaluation of Selected Parameters of Non-Directional Household Lamps, Conference: 2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4), CrossRef I. Fryc; Measurement techniques of optical LEDs properties performed with compliance conformity with CIE 127:2007 standard, Przeglad Elektrotechniczny R. 85, No. 11, pp. 317-319, (2009) DirectLink IESNA, IES Approved Method: Measuring Lumen Maintenance of LED Light Sources. IES LM-80-08', IES Subcommittee on Solid-State Lighting of the IES Testing Procedures Committee (2018). DirectLink D. B. Judd, Estimation of chromaticity differences and nearest color temperature on the standard 1931 ICI colorimetric coordinate system. J. Opt. Soc. America 26 (11), 421, (1936) CrossRef CIE 177:2007 Colour Rendering of White LED Light Sources DirectLink CIE 13.3-1995 Method of Measuring and Specifying Colour. DirectLink CIE 224:2017 Colour Fidelity Index for accurate scientific use DirectLink CIE 15:2004 Colorimetry. DirectLink D. Mozysrska, M. Wyrwas, I. Fryc, The determination of the LEDs colorimetric parameters, in the range of their operating temperature, Przeglad Elektrotechniczny, R. 93, No. 4a, pp. 232-234, (2012). DirectLink J. Kowalska, Analysis of parameters describing the quality of the color rendering of light sources according to the IES TM-30-15 and the CIE 013.3-1995, Przeglad Elektrotechniczny, R. 93, No. 6; pp. 50-54, (2017) CrossRef J. Kowalska, I. Fryc, Colour rendition quality of typical fluorescent lamps determined by CIE Colour Fidelity Index and Colour Rendering Index, Przeglad Elektrotechniczny, R. 95, No. 7; (2019), pp. 94-97 CrossRef J. Kowalska, Ambiguity and limitations in determining the quality of the color rendering of light sources by index Ra (CIE CRI), Przeglad Elektrotechniczny, R. 93 No. 5, pp. 74-78, (2017) CrossRef I. Fryc, J. Fryc, A. Wasowski, Considerations about determining color rendering of light sources, Przeglad Elektrotechniczny, R. 92 No. 2, pp. 218-223, (2016) CrossRef I. Fryc, LED's spectral power distribution under different condition of operating temperature and driving current, Przeglad Elektrotechniczny, R. 86, No. 10, pp. 187-189, (2010). DirectLink A. David, P. Fini, K. Houser et al., Development of the IES method for evaluating the color rendition of light sources, Optics Express; Vol. 23; Issue 12, pp. 15888-15906, (2015). CrossRef K. Houser, M. Mossman, K. Smet et al, Tutorial, Color Rendering and Its Applications in Lighting, LEUKOS; Vol. 12, Issue 1-2; pp. 7-26; (2016). CrossRef

PROBLEMS AND PROSPECTS OF LED LAMP RETROPHYTES

2020 ◽  
pp. 48-52
Author(s):  
I. I. Bayneva ◽  
I. A. Lychagin
Keyword(s):  
Form Factor ◽  
Energy Savings ◽  
Calculated Data ◽  
Light Distribution ◽  
Light Sources ◽  
Potential Hazard ◽  
Direct Replacement ◽  
The Difference ◽  
Incandescent Lamps

The article discusses modern light sources – LED retrofit lamps, which are used to replace traditional light sources (incandescent, fluorescent lamps). The article provides calculated data showing energy savings as a result of replacing traditional light sources with LED ones. LEDs have undeniable advantages over such light sources. This is a high luminous efficiency, durability, color reproduction and much more. Ample opportunities for direct replacement of LED lamps are associated with their form factor, which is the same as that of traditional light sources. The main parameters of the form factor in this case are the sizes of the light sources (bulb diameter) and the type of cap. However, direct replacement has many controversial sides. Firstly, the light environment created by traditional incandescent lamps is very different from that for LED light sources due to the difference in their spectral light distribution. Secondly, the light intensity curves of LED and traditional light sources are very different in a number of cases. Therefore, direct replacement must be carried out very carefully, taking into account the final light distribution of the light device, where they are used. Thirdly, due to the incompleteness of research in the field of safety of LED lighting, the use of such light sources can be limited due to the potential hazard that may lead to a decrease in labor productivity and quality of life. Fourth, the design of LED lamps is complex, their quality depends on the quality of LEDs, phosphors and electronics, so consumer properties may not be at the highest level, even at fairly high prices. Fifthly, for any, even the simplest LED lamp, a heat sink system is necessary, since the thermal regime of the lamps imposes certain restrictions on their use.

scholarly journals 634 Effects of Light Sources for Light Period Extension on Growth and Fowering in Statice

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 507A-507
Author(s):  
Dong-Lim Yoo ◽  
Seung-Woo Lee
Keyword(s):  
Red Light ◽  
High Ratio ◽  
Light Period ◽  
Day Length ◽  
Artificial Light ◽  
Light Sources ◽  
Chlorophyll Contents ◽  
Fluorescent Lamps ◽  
Light Absorbance ◽  
Incandescent Lamps

This experiment was conducted to investigate the effects of artificial light sources for light period extension on growth and flowering of statice `Sophia' and `Early Blue'. The seeds were sown on 10 June in a plug tray with 128 plugs. The seedlings were grown at the highland (800 m above sea level) for 50 days, and transplanted on 30 July in 20-cm-diameter plastic pots. High-pressure sodium lamps (HPS) (220V, 400W), incandescent lamps (Il) (220V, 200W), and fluorescent lamps (Fl) (220V, 40W) for day length extension (16-h photoperiod) as compared with short day (8-h photoperiod) were tested. HPS gave the greatest photosynthetically active radiation (PAR), but Fl did the smallest. HPS or Fl as compared with Il showed high ratio of red/far-red light. The leaves of plant grown under HPS were effective for light absorbance and chlorophyll contents. HPS promoted photosynthesis as much as light period extension, while more respiration than photosynthesis occurred under Fl affected by low PAR. Long day condition as light period extension hastened flowering of statice, and HPS or Il were more effective than Fl on flowering among artificial light sources tested. The light compensation and saturation points of statice were 50 and 500 μmol·m–2·s–1, respectively. Photosynthesis hastened at high temperature, but amount of photosynthesis at vegetative stage showed much higher than flowering stage under the condition below 20 °C These results indicated that day length extension with HPS increased productivity and quality for cut flower of statice at the highland in Korea.

Innovations in the field of blackout of military automotive vehicles

2021 ◽  
pp. 28-38
Author(s):  
Keyword(s):  
System Development ◽  
Light Signal ◽  
Fundamental Difference ◽  
Incandescent Lamp ◽  
Practical Implementation ◽  
Light Sources ◽  
Centralized Control ◽  
Regulatory Requirements ◽  
Led Light ◽  
Incandescent Lamps

The article presents the stages and results of the combined blackout system development for military automotive vehicles. The relevance of generation changing of devices based on the blackout attachments for lighting and light alarm devicesis due to the entry into force of new regulatory requirements. The problem is solved by integrating the well-known principles of blackout into the design of light-signal devices based on LED light sources. The article shows the fundamental difference in the approaches to substantiate the requirements for devices based on incandescent lamps and LEDs. The examples of practical implementation of the developed system are given. Keywords: lighting and light alarm devices, internal lighting, blackout system, blackout modes, centralized control, incandescent lamp, LED

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