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Soczewka Fresnela Aby zmniejszyć grubość jednej z soczewek zbieżnych, jest ona podzielona na kilka kształtów pasmowych, a każda opaska ma działanie pryzmatyczne w celu zmniejszenia aberracji. Stosuje się go w przypadku świateł tylnych i rzutników do samochodów. 프레넬렌즈
집광렌즈 중 하나로 두께를 줄이기 위하여 몇 개의 띠 모양으로 나누어 각 띠에 프리즘작용을 가지게 하여 수차를 작게 한 것이다. 자동차 등의 미등이나 OHP 등에 이용된다.
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1
Nonimaging Fresnel Lenses: Design and Performance of Solar ...
5 Nonimaging Fresnel Lens Design 5.1 Applied Nonimaging Lens Design A Fresnel lens is essentially a chain of prisms. Each prism represents the slope of the lens surface, but without the material of the full body of the conventional singlet.
Ralf Leutz, Akio Suzuki, 2012
2
Basic Principles of Fresnel Antenna Arrays - 14페이지
The classical Fresnel lens is different from the shaped dielectric lens in that the phase transforming surface is broken down into Fresnel zones, or concentric circular sections. Although the sections have discontinuities between them, each ...
Igor V. Minin, Oleg V. Minin, 2008
3
Navesink Twin Lights: The First U. S. Lighthouse to Use a ...
Provides a history of the Navesink Twin Lights, the first electric lighthouse, completed in 1828.
4
Fresnel Zone Antennas - 17페이지
brings in significant complexity to the analysis of the radiation field, so formulae for predicting the radiation pattern of the offset Fresnel lens antennas are derived in this section. When illuminated by a feed horn placed at the focal point F (see ...
Y. Jay Guo, Stephen K. Barton, 2013
... 349 『프랑스의식물』(라마르크) 418 프랭클런드, 에드워드 460 프랭클린, 로잘린드 671 프랭클린, 벤저민 324, 332, 362, 367, 414 프레넬렌즈 499 프레넬모형 497 프레넬, 오귀스탱 496∼9 프리드만, 알렉산드르 708 프리스틀리, 조지프 321∼31, ...
6
Solar Cells and Their Applications - 318페이지
However, when closed facet spacing is used, diffraction effects can decrease the optical efficiency of the Fresnel lens. These losses can become significant at facet diameters around 100 μm. In addition to the loss mechanisms specific to the ...
Lewis M. Fraas, Larry D. Partain, 2010
7
The Light Fantastic: A Modern Introduction to Classical ... - 92페이지
4.21 Anormallensandtheequiv- alent Fresnel lens. On the left are sections which contain the optical axis in each case; on the right, one half of the Fresnel lens is seen as viewed along the optical axis. Compared with the lenses discussed ...
8
Practical Holography, Third Edition - 209페이지
You can also use a Fresnel lens of the type produced for overhead projectors. These come in various focal lengths, and they are usually at least 300mm square: but you need to use them with caution as the lands between the grooves can ...
9
Advances in Solar Energy Technology: Volume 1: Collection ...
... CPC collector 173 2.9 Fresnel lens concentrators 179 2.9.1 Theory of a Fresnel lens 181 2.9.2 Theory and results of a. linear Fresnel lens 184 2.9.3 Experimental results on a linear Fresnel lens 187 2.9.4 Curved base linear Fresnel lens 188 ...
10
America's Lighthouses - 35페이지
'*I|llI|!e. I. 1:5. la I _ _ District lens-repair shop in Buffalo, New York, 1901. Note the fixed Fresnel lens standing near the workbench at the back of the shop. On the center bench are the their fine aids to navigation and whose aids were guided by ...
Francis Ross Holland, Jr., 2012
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프레넬렌즈 w wiadomościach.
"세계 최고 LED 기술로 창업했지만 거래처는 모른채…"
조 대표가 8개월간 G-창업교육을 받으며 개발한 'ILEDYA'(아이레드야)는 프레넬(Fresnel)렌즈를 사용한 고출력-하이파워 LED조명기기 제품이다. 프레넬렌즈란 등대 ... «조선일보, Mar 10»
