OptoLight Soft White LED Light Bulb, retail $2.99*
Manufactured by OptoLight (optolight.com)
Last updated 04-13-20
This is a household light bulb designed to be screwed into a standard E-26 (medium screw base) light socket, and powered directly from 110 to 130 volts AC 60Hz.
It features four linear phosphor white LEDs with a water-clear transparent glass bulb around the LEDs to protect them; the light is radiated a true 360° around the bulb, and out the top and somewhat out the bottom too.
The color is described on the packaging materials as "soft white" with a CRI of 90.
To the eye, the light does appear to be a slightly warmish-white -- it's actually remarkably close to the light produced by a 40-watt incandescent light bulb.
* Price was for two (2) light blubs.
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These bulbs are so easy to use, a caveman could do it!
Simply unscrew and remove the old bulb, and screw the OptoLight Soft White LED Light Bulb in its place.
Yes, it really is that easy folks!!!
Note that I did not instruct you to smash the old bulb and then carefully sweep up the glass and the base and have you dump the dustpan into the dustbin, hahaha!!!
This product is powered by mains ("house current"), not batteries.
So I do not have to tell you which part to remove, huck into a river boiling with hungry, hungry pirahnas or piddled-off caimans, and then rather emphatically tell you not to.
This bulb has a medium E-26 screw base, and screws directly into any American household lamp holder.
It feeds from 110 to 120 volts AC 60Hz -- which is the voltage and frequency used in north America.
You must NOT under any circumstances use this bulb in a fixture controlled by a motion sensor, photoelectric (automatic day/night) switch, timer switch, or dimmer swich. The bulb will fail quickly -- and possibly quite spectacularly -- if this is done.
You don't want rats, crane fly larvae (maggots), or baby brown recluse spiders -- I mean,you don't want an unwanted fire!
This is because dimmer- or other controlled AC sources will have their waveform altered by the electronics in the dimmer/motion sesor/photoelectric switch, and this bulb no likey that.
Since this bulb was meant to be screwed in a light receptacle and not abused, I won't whap it against a steel rod or the concrete patio floor, try to drown it in a toilet bowl, stomp on it, run over it, or inflict other punishments upon it that might be inflicted upon regular flashlights. So this section will be rather short.
Handle it as you would an ordinary household light bulb, and it shouldn't give you any guff.
If you drop it, the glass bulb (outer envelope) will probably become broken, just like a regular light bulb except that there's no vaccum (vacumn, vaccuummnne, vacuume, vacum, vacuum, etc.) to relieve, so it will likely not make that satisfying "POP!" sound that you hear when you drop a regular light bulb on the floor and it breaks.
If the outer glass envelope should become busted, potentially hazardous voltages may be exposed, so please throw it away unless you use it in a fully-enclosed fixture (such as a porch light) and can say with absolute, positive, 100% certainty that fingers or paws cannot get to it.
If you indeed do that instead of discarding it, at least try to break off the rest of the glass so that you don't cut yourself while screwing it in.
This light bulb is rated to produce 450 lumens** of light (functionally equivalent to a 40-watt incandescent) while using just 5 watts and with a rated lifetime of 25,000 hours.
Photograph of the bulb, illuminated of course.
Measures 40,900mcd on an Amprobe LM631A light meter.
Remember though, that this is a 360° light source, and wider viewing angles always, always, ALWAYS equal lower mcd (intensity) values!
Spectrographic analysis of the LEDs in this bulb.
Spectrographic analysis of the LEDs in this bulb; spectrometer's response narrowed to a band between 450nm and 460nm to pinpoint native emission peak wavelength, which is exactly 454.00nm.
Spectrographic analysis of the LEDs in this bulb; spectrometer's response narrowed to a band between 600nm and 620nm to pinpoint phosphor emission peak wavelength, which is 611.020nm.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at ol.txt
Spectrographic analysis of phosphorescence of the LEDs in this bulb when irradiated with the Directly-Injected 5mW 488nm Greenish-Blue ("cyan") Laser Pen; spectrometer's response narrowed to a band between 450nm and 750nm.
That huge cyan "spike" is the laser itself, and may safely be ignored.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at olpgb.txt
Spectrographic analysis of phosphorescence of the LEDs in this bulb when irradiated with the Blue-Emitting Laser Pen 5mW 445nm 450nm; spectrometer's response narrowed to a band between 450nm and 750nm.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at olpb.txt
A beam cross-sectional analysis would normally appear here, but the ProMetric System
that I use for that test was destroyed by lightning in mid-July 2013.
Brief video of the bulb's "filament" being irradiated by violet and blue lasers so that you can see it phosphorescing (glowing).
Violet laser first, then blue laser.
The music that you hear is zax from the coin-op arcade video game, "Afterburner ][" aka., "Afterburner Deluxe" by Sega from 1987. This is the little tune that you hear when you coin-up the machine (when you put a quarter in).
This product is not audio (sound)-sensitive in any manner; the music may safely be ignored or even muted if it piddles you off.
TEST NOTES:
I purchased this at the Happy Market in Fresno CA. USA on 04-09-20.
** Lumens are measured with a very expen$ive instrument called an integrating sphere, and I do not own or have any access to one. So I am forced to take the packaging claims as gospel.
UPDATE: 00-00-00
PROS:
Good quality of the light both in its radiation field and color
Very low power consumption (5 watts)
The price is most definitely right ($1.50 each)
Potential for very long bulb life
Easy to retrofit existing lamps and wall/ceiling light sockets with
Impressive warranty period
NEUTRAL:
It is breakable -- but no less so than regular light bulbs. Will not figure into rating
Cannot use on a dimmer circuit -- but most LED bulbs have the same fault. Again, will not figure into rating
CONS:
MANUFACTURER: OptoLight
PRODUCT TYPE: LED-type household light bulb w/glass envelope
LAMP TYPE: Linear (filament-shaped) phosphor white LED
No. OF LAMPS: 4
BEAM TYPE: Toroidal (doughnut-shaped); 360° in X-axis, ~320° in Y-axis
REFLECTOR TYPE: N/A
SWITCH TYPE: N/A
CASE MATERIAL: Metal & glass
BEZEL: N/A
BATTERY: N/A (uses 110-120VAC mains power)
CURRENT CONSUMPTION: Unknown/unable to measure
WATER- AND URANATION-RESISTANT: Very light splatter-resistance at maximum
SUBMERSIBLE: DER TEUFEL TRÄGT EINE KOT GEFÜLLTEN WINDEL, NEIN!
ACCESSORIES: None
SIZE: Not equipped to measure
WEIGHT: 41g (1.450 oz.)
COUNTRY OF MANUFACTURE: China
WARRANTY: 5 years
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