As any physicist will tell who is frustrated, a little 'complicated. And you have to do what we want is more difficult. Being a lighting design for residential and commercial purposes of a process confusing. But with a few tools and a little 'know-how we can do things a little' more accessible. The first step is to know how much light comes from a bulb and how to hit the area - but to do this, we need to cover some basics ofhow light works.
Some vocabulary quickly
First things first - when it comes to lighting, there is a different vocabulary than what most people are accustomed. So before continuing, we should be one of the few confusing terms straight.
Above is the light word. In the light, a lamp is a device that, when a power supply is connected, generates visible light. Often described as a light bulb, these are the most sensitive parts of a light.
WhatMost people would call a really light, like a fixed size known in the lighting industry terminology. The reflector is the body that contains a light bulb - contains the physical parts that direct the light and shutter speed.
A filter is a generic term for anything that reduces the intensity of a source of light. A selective filter can reduce the power of the wavelength, the production of different colors, or more generally, to diffuse the light, making it less offensive to the human eye.
How is the light?
The light ismeasured in two ways: in terms of illuminance and irradiance. Both measure the intensity of light, but there is one crucial difference. Radiation is a measure of the power transmitted straight from the source to the observer - this is measured in watts per square meter. Radiation is usually for safety reasons, not for commercial lighting. For the measurement of light bulbs, light intensity is usually used.
Illuminance is the measure of light energy transferred from one source, but is modified according tothe luminosity function for differences in the way the human eye perceives different wavelengths of light. Common measures are both lumens and lux illuminance measurements.
What is more likely to see on the specifications of a light bulb, the light units. As mentioned, the intensity measure lumens of light. More specifically, the packaging material for a light bulb usually say xxxx lumens - this measures the total output of the lamp. Lux, however, measures how well litsomething is or how much light from the source makes the observation point.
To get things in perspective to 500 lux (the level in a well-lit office) in an area of 10x10 would be a 10,000 lumen compact fluorescent lamps (CFLs) should - that work about 20 watts. For comparison, this is about the equivalent of a 65 watt light bulb. For a territory twice as large (about 14x14), you would need four times as much light, or 40,000 lumens, admitted that it was allfrom a single source of light. This is because the power of light decreases exponentially as you get further away from the source.
The performance of an existing light bulb
The output of a lamp can be measured by a device called a light meter. If you own a nice camera, chances are one in which we built for testing purposes of comparison, but if you want to spend a numerical value, you will probably have to buy a dedicated device. These can be purchasedPhotography and agricultural suppliers, usually for less than fifty dollars. But before buying you should always make sure that the selected device is in the range of intensity you are trying to cover are measured.
If you are planning a light bulb to replace an existing light, you must first want the effect of colors or screens, which would reduce the lamp brightness to be measured. This is the most non-industrial environments such as direct sunlight is often irritating to the peopleEye. So, for a commercial or private institution, is a good technique to measure the power of the lamp with and without the shadow. The breakdown of those who give this a good approximation the effect of the device.
If you find the ratio of the output, for example 70%, then you would need a light bulb, find the 1.3x brighter. In the above example this would result in a lamp at 13,000 lumens, in order to achieve the same desired 500 lux in our theoretical space 10x10.
As weseen, professional lighting can be complicated, but the accuracy is relatively high in the world of light. The average stay is illuminated by about 50 lux, but the causes can not win until you get up more than a few hundred. An office can be anywhere from 300 to 500 lux, and a television studio is illuminated at 1000 lux. If you can just keep the information here, you should be fully equipped, the lights are difficult to meet regularly probably short on professional managementContract.
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