Product search

Location: Home >FAQFAQ

What are LM 79& LM80 report
LM-79 establishes testing methodology to create a level field for product evaluation. It looks at 25C ambient, power supply, stabilization, orientation, electrical instruments, and testing equipment. LM-79 defines what information is required; total light output, voltage, current, power, calculates efficacy, lumen distribution, CCT, CRI, spectral distribution, testing lab, and equipment used. LM-79 requires that solid state lighting products be tested to “Absolute Photometry.” Conventional HID/Fluorescent uses “Relative Photometry.” Absolute Photometry is lumen output of LED based luminaires and is dependent on the chip, thermal management, drive current, and optical system. LED based luminaires and lamps must be tested as a complete unit or system. Only DOE recognized CALiPER testing laboratories results should be utilized. LED luminaires and lamps do not “fail” like conventional sources This is known as L70 Total life is known as L70B50 LED luminaires and lamps gradually decrease in output over time IES has determined end of life of LED products to be when the lumen output is 70% of its initial (30% depreciation) This is known as L70 Total life is known as L70B50 L70B50 is the amount of time for the light output of 50% of a set of LEDs to fall to 70% of their original light output under a given set of operating conditions. The DOE has suggested that useful life of LEDs to be 35,000 to 50,000 hours. Claims beyond these values cannot currently be substantiated using available approved methods, or historical data to support claims beyond these levels. LM-80 however does not provide testing procedures for a complete luminaire only to measure the lumen maintenance of a LED package, array or module at 6,000 hours.
How does ambient temperature affect LED efficiency?
LED fixtures must be designed with junction temperature thermal management as a key component and use the correct LEDs. These products will then be robust enough to operate in most ambient temperature applications. Unlike fluorescent sources, cold temperatures do not impact the performance of LEDs.
Do I have to replace LEDs?
An LED does not burn out like a standard lamp, so individual diodes do not need to be replaced. Instead, the diodes gradually produce lower output levels over a very long period of time. If one LED fails, it does not produce a complete fixture outage.
How long is 100,000 hours?
Based on how long a fixture is illuminated per day, here's what 100,000 works out to: Hours of Operation: 100,000 hours is: 24 hours a day 11.4 years 18 hours per day 14.8 years 12 hours per day 22.8 years 8 hours per day 34.2 years
Where can LEDs be used?
Lighting Matters can supply LED lighting for the following applications: Residential applications:
- decorative lights
- pendant lights
- under or inside cabinets
- kitchen splash back lighting
- recessed lighting
- feature wall lighting 
- bedroom
- bathroom
- home theatre / media room
- entertainment area
- patio / garden Architectural/Commercial:
- interior and exterior special effect lighting (eg. Hotel, restaurant, casino, water feature, landmark)
- landscape lighting for gardens, parks, pools and spas
- wall washers
- strip lighting
- accent lighting
- cove lighting 
- small spot lighting
- path lights
- in-ground and underwater lights Industrial:
- flood Lighting
- high or low bay replacement
- task lighting
- street lighting Retail display:
- refrigerated display case lighting
- general merchandise lighting, eg. creating effects and moods based on warm/cold colours
- display case lighting Entertainment:
- concerts feature effect lighting
- concert hall and theatre lighting
- tv studios, stage lighting
- bars, clubs and restaurant Safety and security:
- exit / entry signs
- emergency lighting
- outdoor areas
- parking lots
- street and highway lights and signs
Why do LED lights look different?
The technology behind LED lights is fundamentally different from more traditional bulbs. LED's have fins and vents to keep the bulb running cool.
Are LEDs too directional?
Not all of them.. While all diodes release light, most don’t do it very effectively. In an ordinary diode, the semiconductor material itself ends up absorbing a lot of the light energy and push the rest through the plastic housing. Surface mounted LEDs (SMD chips) are specially constructed to release a large number of photons outward. Additionally, they are housed in a small bulb or lens that concentrates the light in a particular direction, where most of the light from the diode bounces off the sides of the bulb, traveling on through the rounded end.
What is SMD or High Power LEDs?
High power LEDs utilize the latest LED technology. These are the surface mount type or SMD LEDs. Small as they are, they generate high heat which must be dissipated or moved away from the LED in order for the LED to live the expected life time of 50,000 hours. To do that, most manufacturers have incorporated an aluminum body with fins to increase the total area that the heat can escape to and be dissipated. The higher the operating current, the higher the heat load to be dissipated. That means more fins, or more thin and longer fins are required. In the case of one newly developed design, the LED bulb incorporates water to assist with the dissipation of heat and some have even gone to the extent of having small fans inside the lamp.
What is lux?
Lux is a measure of lumens per square meter. According to Wikipedia, “The difference between the lux and the lumen is that the lux takes into account the area over which the luminous flux is spread. 1000 lumens, concentrated into an area of one square meter, lights up that square meter with an illuminance of 1000 lux. The same 1000 lumens, spread out over ten square meters, produces a dimmer illuminance of only 100 lux.” For more information on LUX click here to visit the Wikipedia page.
Why are LEDs considered a GREEN technology?
LEDs are environmentally friendly on many fronts. First, unlike HID (High Intensity Discharge) lamps LEDs contain NO mercury. In addition, some LED luminaires are RoHS (Restriction of Hazardous Substances) compliant and have been designed to provide more than a decade of near maintenance-free service. That means no re-lamping which means no waste. Assuming an HID fixture is re-lamped every two years, that’s five re-lamping cycles over a 10 year period. Just imagine the benefits of choosing LED: • No concern over proper disposal (hopefully not simply thrown in a landfill) of old HID lamps containing harmful mercury. • No fuel used and the accompanying pollution to service those fixtures. • Greatly reduced potential for lane closures and other productivity and inconvenience-related costs associated with maintaining an HID system. • No natural resources lost to produce the replacement lamps that contain mercury. • No fuel used to move old-technology lamps from the factory (most likely overseas), to the distributor, to the contractor, to the job site. It’s important to keep in mind all the positive and powerful ripple effects that using LED technology can have on the environment.
What is a LED?
Light Emitting Diodes (LEDs) are solid-state semiconductor devices that convert electrical energy directly into visible light There are two semiconductor materials that a current runs through and where light and heat are generated at the junction.
Can I use a CFL or an LED with a dimmer switch?
In order for a CFLor LED to work on a dimmer switch you must purchase a CFLor LED that is made to work with dimmers.. Not all dimmable CFLs and LED are equal, the bulb’s packaging should indicate how well the bulb dims and if it requires a special type of dimmer to function properly.
What should I do if I break a CFL?
The EPA recommends that if a CFL breaks carefully sweep up all the fragments – wipe the area with a wet towel and dispose of all fragments, including the used towel, in a sealed plastic bag. Follow all disposal instructions. If possible open windows to allow the room to ventilate. Do NOT use a vacuum. Place all fragments in a sealed plastic bag and follow disposal instructions. You can find full instructions here: http://www.epa.gov/cfl/cflcleanup.html
Do CFLs give off Ultraviolet (UV) light?
CFLs give off a minimal amount of UV light. It does not pose a hazard.
Can CFLs create interference with electronic equipment?
This product may cause interference with radios, cordless phones, televisions and remote controls. If interference occurs, move this product away from the device and plug into a different outlet.
What about air temperature & CFLs?
CFL bulbs may generally be used where the air temperature is between -20 Centigrade degrees and 50 centigrade degrees. Above 50 centigrade degrees, there may be reduced light output and premature ballast failure. CFLs have a harder time starting below 20 Centigrade degrees, reducing the brightness.
Can I use a CFL bulb in an enclosed light fixture?
Yes, you can use a CFLs that are 23 watts or below in a fully enclosed fixture.
Can we use a CFL in applications where I will be switching frequently?
Some CFLs cannot handle frequent on/ off cycles and these products may have a shorter life if frequently turned on and off. However, There are certain CFLs that have been designed to handle frequent on/ off cycles, such as TOSPO’s Technology.
Why does my CFL appear dim when I first turn it on?
Some CFLs require a short warm-up period before they reach their full brightness. This could be why they appear to be a little dim with they are first turned on and TOSPO CFLs should take less than a minute to reach full brightness. TOSPO’s CFL will give you full brightness in a snap and TOSPO’s has a run-up time shorter than most other bulbs in the marketplace.
Can I use a CFL to replace my 3-way lamp?
Yes a regular CFL can be used with a 3-way lamp and not have it damage the bulb. The bulb will operate on the middle setting. However you must purchase a special 3-way CFL in order to achieve the 3 different levels of brightness.
What is "RoHS Compliant"
Restriction of Hazardous Substances (RoHS) is a European directive that establishes a set of product safety restrictions that ban materials such as lead, mercury and cadmium from electronics. Over the past decade RoHS laws have been spreading around the globe.
What wattage should I buy?
When buying a compact fluorescent light bulb, choose a wattage that's about one-fourth of what you usually buy. The table below shows some typical wattage conversions for CFLs: • 15-watt incandescent = 3-watt compact fluorescent • 40-watt incandescent = 9-watt compact fluorescent • 60-watt incandescent = 13-watt compact fluorescent • 75-watt incandescent = 18-watt compact fluorescent • 100-watt incandescent = 23-watt compact fluorescent • 120-watt incandescent = 30-watt compact fluorescent
How long should my light bulbs last?
TOSPO adheres to an industry standard for rating light bulb life called “rated life.” All of our packaging shows the average rated life of that specific bulb. All light bulbs are tested to determine what their rated life will be. The time that half of the test sample fails is considered as rated life. By definition, some lamps will fail before their rated life and some will operate beyond their rated life. Keep in mind that different styles of light bulbs can have different rated life. Using a bulb in an incorrect application can also have an impact on the life of the bulb. Application information can be found on the bulb packaging.
What’s a Lumen?
The lumen (unit: lm) is the SI derived unit of luminous flux, a measure of the total "amount" of visible light emitted by a source. Luminous flux differs from power (radiant flux) in that luminous flux measurements reflect the varying sensitivity of the human eye to different wavelengths of light, while radiant flux measurements indicate the total power of all light emitted, independent of the eye's ability to perceive it. The lumen is defined in relation to the candela as 1 lm = 1 cd•sr A full sphere has a solid angle of 4•π steradians, so a light source that uniformly radiates one candela in all directions has a total luminous flux of 1 cd•4π sr = 4π ≈ 12.57 lumens.
How does a CFL work?
Regular, incandescent light bulbs produce light by heating a filament inside the bulb. The heat makes the filament white-hot, producing the light that you see. This method is very wasteful as it uses a lot of energy to heat up the filament that produces light. Fluorescent bulbs contain a gas that produces invisible ultraviolet light (UV) when the gas is excited by electricity. The UV light hits the white coating inside the fluorescent bulb and the coating changes it into light you can see. Because fluorescent bulbs don't use heat to create light, they are far more energy-efficient.
What is a CFL?
A compact fluorescent lamp (CFL), also known as a compact fluorescent light bulb or an energy saving light bulb, is a type of lamp designed to fit into roughly the same space as an incandescent lamp, but with the advantages of a fluorescent lamp. Many CFLs can directly replace an existing incandescent lamp, CFL can save more than 80%.

COPYRIGHT © 2012 TOSPO LIGHTING ALL RIGHT
RESERVED.浙ICP备07018278号  DESIGN BY  :  WEETOP