All bulb's output drop as they age, whether they are Halogen, HID, or LED. I often replace bulb when they burn out, but that seemed a bit dangerous. What if the other bulb burn out shortly afterwards before I can replace the burnt out bulb? In addition, the bulb may get too dim and I don't notice because it's gradual.
How about taking a baseline. Could we do something like this:
1. Park car at a measure distance from the garage door.
2. Use a cell phone with meter software to take a reading at the brightest spot.
3. Repeat monthly and chart the output until the bulb burns out.
The reading on the phone may not be accurate, but we are trying to get a relative reading. I could use this to find out how dim the bulb gets until it burns out. We could then chart out when to replace it if for example the output drops by 20% or so.
By the way, when a manufacturer claim they have an output or 1500 Lumen, do they actually measure this?
Paul
How about taking a baseline. Could we do something like this:
1. Park car at a measure distance from the garage door.
2. Use a cell phone with meter software to take a reading at the brightest spot.
3. Repeat monthly and chart the output until the bulb burns out.
The reading on the phone may not be accurate, but we are trying to get a relative reading. I could use this to find out how dim the bulb gets until it burns out. We could then chart out when to replace it if for example the output drops by 20% or so.
By the way, when a manufacturer claim they have an output or 1500 Lumen, do they actually measure this?
Paul