Low Efficency Comsumer LED Products

[OneHitDone]

Anyone have any insight into why in the day and age that 150lm/w is becoming the "norm", pretty much all of the consumer lighting led products are just Doglog?
I am hard pressed to find any house hold lighting products that even break 100lm/w

 

[nevergoodenuf]

Because the government set a green standard for leds around 90 lumens per watt. So most companies are only trying to meet minimum standards, it's cheaper.

 

[AquariusPanta]

A few factors to consider would be the technology used and how efficient it is (total lumen output), size of heat sink (most are limited in size for consumer light bulbs, so heat build up to be considered), and optics used. Plus there is the drivers that are used.

Great thread/discussion to open up, @OneHitDone +1

 

[Abiqua]

Your eyes see different spectrums that don't need to be as efficient or companies aren't trying to push the envelope technology wise, but are fiscally.

 

[robincnn]

Are they including driver efficiency, optics loss in bulbs LM/w rating
Small drivers can pull system efficiency by 20% or more. Diffuser loss also may be another 10%

Just bought these 90 cri par 38
Hyperikon PAR38 LED Bulb, 14W (100W equivalent), 1220lm, about 90 lm/ watt, low CRI once near 100lm/watt
https://www.amazon.com/dp/B00RMK01E6/ref=cm_sw_r_other_awd_19h6wb1RGQR64

 

[OneHitDone]

Your eyes see different spectrums that don't need to be as efficient or companies aren't trying to push the envelope technology wise, but are fiscally.

I thought the name of the game for the greenies and the environment is to get the total energy usage of every fixture down to as low as possible?

 

[Abiqua]

I thought the name of the game for the greenies and the environment is to get the total energy usage of every fixture down to as low as possible?

what does that have to do with the owners of the company who don't give a fuck....I don't know either...

 

[BOBBY_G]

I thought the name of the game for the greenies and the environment is to get the total energy usage of every fixture down to as low as possible?

if only the "greenies and the environment" were in charge of running a business based on minimum standards as stated above

 

[FranJan]

Anyone have any insight into why in the day and age that 150lm/w is becoming the "norm", pretty much all of the consumer lighting led products are just Doglog?
I am hard pressed to find any house hold lighting products that even break 100lm/w

My little take is like most folks are pointing out. There's 150 LpW in a lab, (or on a calculator ), then there's the lumens per watt your LED actually get when mounted in a lumenaire. That's why some companies, (Samsung, Philips, Xicato?), are starting to provide both. Anyway LED based bulbs and basic household lighting in general is a low-profit business so designing expertise is therefore spent on production and minimal cooling designs. Look at CREE's first bulb offering, not a great cooling design but everyone in the LED biz really respected it's overall design and packaging. Light quality and bulb glue were another thing though . Then there's the age old question do I drive 2 LEDs hard or 4 LEDs soft to produce my lumens. Usually it's 2 hard to save money and therefore efficacy is shot to shit.