与 «LUMINOUS FLUX»相关的英语书籍
在以下的参考文献中发现
luminous flux的用法。与
luminous flux相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
1
Mine Environmental Engineering
It is the luminous flux on a small surface normal to that direction, divided by the
solid angle (steradians) which the surface subtends at the source of light.
Mathematically, a solid angle must have a point as its apex, and the definition of
luminous ...
2
Competition Science Vision
Luminous efficiency : It is the total luminous flux per unit radiant flux. That Overall
luminous efficiency Luminous flux emitted Power input to the source Comparison
of power of two sources : The sources ST and S2 are placed as shown in the ...
3
Light Pollution Handbook
1 4.1 .3 The luminous flux (a) Definition The luminous flux is the quantity or the
amount of the light. The unit is lumen (Im). Its dimension is, as is explained in sec
14.1.2, that of the Watt. It is indicated by the symbol <I>. Since, the luminous flux ...
Kohei Narisada, Duco Schreuder, 2004
4
Light and Light Sources: High-Intensity Discharge Lamps
Some typical light sources, their wattage, luminous flux, and luminous efficacy [54
,71,118,170] a Halogen incandescent lamp b Metal halide (high-pressure)
discharge lamp 1.2.1 Luminous Flux The quantity of light or radiation of a light
source ...
5
Electrical Engineer's Reference Book
Luminous flux, which is the rate of flow of light, is radiant power weighted
according to its ability to produce a visual sensation by the V(/\) function. The
luminous flux emitted by a source of light will vary with direction of emission. The
rate of ...
M. A. Laughton, D.F. Warne, 2002
6
High Brightness Light Emitting Diodes
4. LUMINoUs FLUX REQUIREMENTS The first step in the design of an LED
automotive signal light is to determine approximately how many LED lamps are
needed to meet the minimum government-regulated photometric output. The
easiest ...
7
Handbook of Optoelectronics (Two-Volume Set)
Relationship Luminous flux (Fv) is the time rate of flow of light as weighted by V(l)
. The unitof luminous flux is the lumen (lm). It is defined as Fv 1⁄4 Km Z l Fe;
lVðlÞdl ðA2:2:3Þ where F e,l is the spectral concentration of radiant flux as a
function ...
John P. Dakin, Robert G. W. Brown, 2010
8
Glass & Interactive Building Envelopes
Luminous flux and luminous efficacy correspond to the solar radiant flux. Spectral
distribution of the solar energy is roughly equal to black body spectrum at the
temperature of T = 5773 K. The spectral distribution of radiant flux represents the
...
9
Astronomical Photometry: A Guide
The corresponding quantities in photometry are distinguished by the root "lumi-"
in place of "radi-": luminous flux, luminous intensity, illuminance and luminance.
Monochromatic — or "spectral" — versions of those quantities can be defined (in
...
C. Sterken, J. Manfroid, 1992
A 60 W incandescent light bulb has a luminous flux of 1000 lm. Assume that light
is emitted isotropically from the bulb. (a) What is the luminous efficiency (i.e. the
number of lumens emitted per watt of electrical input power) of the light bulb?
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找出国内和国际出版社所讨论的内容，以及词语
luminous flux在以下新条目的上下文中是如何使用的。
Led for automotive head-up displays
Typical luminous flux is 260 lm at 1A or 350 lm at 1.5A. The package measures 1.9 x 1.5 x 0.75mm, the LED can be under 100µm from the ... «ElectronicsWeekly.com, 七月 15»
Oslon Compact CL for Head-Up Displays
The typical luminous flux of a single LED is 260 lm at an operating current of 1 A, and 350 lm at 1.5 A. With these high light outputs the Oslon ... «Novus Light Technologies Today, 七月 15»
DOE Issues Proposed Rule on Test Procedures for Integrated Light …
IES LM-84-14, "Approved Method: Measuring Luminous Flux and Color ... IES TM-28-14, "Projecting Long-Term Luminous Flux Maintenance of LED Lamps and ... «Targeted News Service, 七月 15»
How to choose your LED products
While some products have initial higher luminous flux (parameter used to describe the brightness of a projector& calculated in lumens) than ... «The Hans India, 七月 15»
Sidewalk Art Show & Exhibition
... emitting or reflecting usually steady, suffused, or glowing light; of or relating to light or to luminous flux. Blinded by the Light is an art exhibition ... «Yesterday's Island/Today's Nantucket, 七月 15»
Osram launches second-generation Duris S 8 LEDs with 17 …
EM) containing six, eight or ten chips yielding different luminous flux brightness levels of 375, 500 and 610 lumens (typical), respectively, at a ... «Semiconductor Today, 六月 15»
Vishay Intertechnology offers super red, red, amber, and yellow …
Available in gullwing and reverse gullwing versions, the devices offer high luminous flux and incorporate larger chip sizes to withstand drive ... «LEDs Magazine, 六月 15»
Lisun develops LED test tools for lumen maintenance evaluation
So LPCE-2 has two software capabilities: one is to test the luminous flux, color temperature, color rending index, wavelength, spectrum, light ... «LEDs Magazine, 六月 15»
Zhaga Consortium publishes Book 9 specification for LED light …
However, many other features – such as the luminous flux or efficacy of the LED modules – are not restricted by the Zhaga specifications. «LEDs Magazine, 六月 15»
Hands-on testing of popular LED T8 lamps and linear fixtures …
The HL's light numbers are very good with CRI of around 90 and luminous flux output of 1900 lm per lamp. Moreover, let's consider more ... «LEDs Magazine, 六月 15»
