#led regulable

[nedgis]

¿Cómo entender mejor el principio de la variación de la luz?

¿Confundido y perdido con el lenguaje eléctrico? ¡No te preocupes! Algunos términos pueden ser difíciles de entender y usar. Por eso, hemos decidido explicarte más a fondo las ventajas de una luminaria de intensidad regulable. Más utilizado, el término “dimmable” significa “ajustable.” Una luminaria dimmable permite ajustar la intensidad de la luz según tus necesidades y el ambiente que quieras…

[healingthroughvisions]

Releasing Insecurity

Releasing Insecurity Last week, I caught myself shrinking. Again. I was about to speak up—heart open, words ready—and suddenly, this familiar fog rolled in, as if to block the flow of thought within me, to prevent me from expressing something at work and with someone I care about. It didn’t come loud or chaotic. It came quietly, like a shadow sliding across my chest. The kind of doubt that…

[sngl-led-auto-lights]

Why are the Mercedes S-class headlights not DOT approved but BMW adaptive LEDs are?

The differing regulatory standards between U.S. (DOT) and European (ECE) safety requirements are the primary reason why Mercedes S-Class headlights may not be DOT-approved, while BMW adaptive LED headlights comply. Here's a detailed analysis:

Regulatory Differences: U.S. vs. Europe

DOT Standards (U.S.): The U.S. Federal Motor Vehicle Safety Standard (FMVSS) No. 108 imposes strict limits on headlight intensity, beam patterns, and adaptive features. For example, adaptive systems must maintain fixed low/high beam patterns and cannot exceed 150,000 candela brightness.

ECE Standards (Europe): European regulations allow more advanced adaptive features, such as dynamic light distribution and laser-assisted high beams (e.g., Mercedes' DIGITAL LIGHT with 1024-pixel resolution for road projections). These systems often exceed U.S. candela limits or use unapproved dynamic adjustments.

Mercedes S-Class Headlight Technology Mercedes' advanced systems, like DIGITAL LIGHT, incorporate features that conflict with DOT rules:

Dynamic Projections: They can project symbols (e.g., lane markings, pedestrian warnings) onto the road, which U.S. regulators consider non-compliant due to potential driver distraction or misinterpretation.

Pixel-Level Control: The system adjusts individual LEDs to create "shadow zones" around other vehicles. However, DOT requires fixed beam patterns rather than real-time pixel adjustments.

Turquoise Marker Lights: Mercedes uses turquoise lights for self-driving mode in some states (e.g., California), but these are state-specific and not federally approved.

BMW Adaptive LED Compliance BMW’s adaptive LEDs adhere to DOT standards through design compromises:

Matrix LED Focus: BMW shifted from laser lights (discontinued in the U.S. due to Rule 108) to Matrix LEDs, which adjust brightness within DOT candela limits.

Simplified Adaptivity: BMW’s system uses pre-defined beam patterns and avoids dynamic projections. Features like cornering lights and auto-dimming high beams meet DOT’s “fixed beam” criteria.

Certification Strategy: BMW engineers specifically tailor U.S. models to comply with FMVSS 108, whereas Mercedes prioritizes ECE certification for advanced features.

Market Prioritization

Mercedes: Focuses on cutting-edge innovations for European markets, where regulations support features like laser lights and road projections. U.S. versions may lack these due to certification costs.

BMW: Adopts a modular approach, ensuring core adaptive LED features (e.g., glare-free high beams) meet both ECE and DOT standards.

Conclusion The discrepancy arises from regulatory philosophy:

The U.S. prioritizes uniformity and simplicity in lighting standards to minimize confusion.

Europe encourages technological experimentation for safety enhancements.

For now, Mercedes’ advanced systems remain non-compliant with DOT rules, while BMW’s adaptive LEDs strike a balance between innovation and regulatory adherence.

[msilverstar]

Headlights are way too strong! Since we can't have regulation any more, shaming the car companies is our only hope.

if i’m ever brutally murdered and everyone feels like they need to do something productive in my memory, all i want is for you to pass legislation banning LED headlights in my name. regardless of how irrelevant it is to my murder. it’s relevant to my heart.

[nedgis]

¿Cómo entender mejor las opciones y características técnicas de sus luminarias?

¿Asustado y perdido frente al lenguaje eléctrico? ¡No te preocupes! Es cierto que algunos términos técnicos a veces son complicados de entender y usar. Por eso, hemos decidido explicarte más en profundidad las características técnicas de tus luminarias. El Índice de Protección (IP) Es muy importante revisar el IP de tus luminarias cuando se trata de exteriores o de habitaciones en contacto con…

[addohaislam2000]

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[sngl-led-auto-lights]

How do automatic headlight leveling regulations, set to come into force in 2027, aim to address the issue of headlight glare on roads?

The automatic headlight leveling regulations to be implemented in 2027 aim to systematically solve the problem of vehicle headlight glare through technical standardization and intelligent upgrades. The following is an interpretation of the core goals and implementation paths of these regulations:

Technical core: dynamic adaptive adjustment system Sensor fusion and real-time adjustment The regulations will force vehicles to be equipped with multi-modal sensors (such as gyroscopes, accelerometers, steering angle sensors), combined with vehicle load, pitch angle, speed and other data, and calculate the optimal headlight angle in real time through the ECU. For example: Automatically lower the beam height when going uphill to avoid light shooting into the air; Automatically compensate for the headlight pitch angle when the load increases and the rear of the vehicle sinks. Intelligent environmental perception Requires the headlight system to integrate cameras or light sensors to achieve: Automatically switch to low beam after identifying oncoming vehicles/pedestrians; Differentiation of lighting modes between urban roads and highways (such as narrow beam anti-glare, wide beam enhanced vision).

Standardized parameter setting Illumination angle and brightness threshold The regulations will clarify the reference illumination height of different models (such as the center line of the low beam is 0.8-1.2 meters from the ground), and set the dynamic adjustment range to ensure: No strong light above the line of sight of the oncoming driver appears within 30 meters; The speed threshold for automatic activation of the high beam (such as >40km/h and no oncoming traffic). Compatibility test standard The vehicle needs to pass the simulated scene test (such as undulating road surface, emergency braking conditions) to verify the stability of the headlights in dynamic driving.

User education and system transparency Driver warning mechanism The regulations may require the system to issue a prompt when the automatic mode is manually overridden (such as forcibly turning on the high beam to trigger an alarm). Maintenance standardization Require 4S stores to use calibration equipment to reset the lights to avoid manual adjustment errors.

Long-term technical evolution direction V2X collaborative dimming In the future, it may be possible to share lighting data between vehicles through the Internet of Vehicles to form regional light beam coordination (such as the fleet automatically adjusts the lights to form a continuous lighting strip). AI predictive adjustment Predict the curvature of the curve in combination with the navigation map, and adjust the beam width and steering angle in advance. Prediction of the effect of regulatory implementation Accident rate reduction: US IIHS research shows that reasonable dimming can reduce oncoming vehicle accidents at night by 19%; Energy efficiency improvement: Adaptive lighting can reduce ineffective energy consumption by 30%. These regulations not only solve the glare problem, but also promote the evolution of automotive lighting from "passive safety" to "active coordination", laying the foundation for road rights allocation in the era of autonomous driving.

[itmightrain]

The thing about gay sailors in the Victorian era is that England and America had totally different takes on it. In the british navy they could, and did, literally kill men for having consensual relationships with other men. But in the US navy, even tho John Adams literally copied England's naval regulations when making America's version, he chose to leave out every proscription against sodomy. And no one knows why!!! England was like hmm yes the death penalty and America was like i dont really see how thats my business. And like gay American sailors could still be charged with things like "uncleanliness" or "indecency" (charges that were vague enough to cover a lot of different things) but bc it wasnt specifically forbidden in the regulations "the commanding officers [were given] wide discretion to prosecute, punish, or ignore."*

And by and large US officers seem to have ignored it. We literally have the records of every flogging (the most extreme form of punishment allowed during these specific years) onboard a naval vessel for the years of 1846-1848 and almost all of the cases that involved homosexual activity "unambiguously refer to male/male homosexual activity involving attempted assaults on children, not consensual couplings between adults."* There are also multiple recorded instances throughout the Victorian Era of an American sailor coming forward with a charge of sexual assault and pulling in other sailors or even officers as witnesses who tell their captain yeah i totally saw them and didn't say anything until this sailor told me it was nonconsensual. There are even records recorded by naval recruitment officers of men with extremely explicit gay tattoos being allowed to join the navy. Why did the US navy not care enough to even include it in the regulations while the British navy literally hanged men for it??? Were we so hard up for sailors that John Adams was like bitch we need every gay sailor we can get????

And weirdly enough this was true on American Whaling ships too! In the recorded cases where homosexual activity led to sailors being disciplined (in some cases punishment so mild as just being dropped off their ship at the next port) it was usually in situations where rape was involved and/or there was a high degree of ship disruption related to it (guys getting into a public knife fight for example). Idk I just think thats so interesting especially when America and England were so similar to be so different in this particular area is fascinating

*quotes from Unruly Desires: American Sailors and Homosexualities in the Age of Sail by William Benemann

[imjustli]

I wonder how many of the "blonde (derogatory)" girls are actually just autistic

[brynn2kell]

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[sirfrogsworth]

This is one of those things where the discourse is just completely broken. Both of these takes are shit and no one is concerned about the actual problem.

Republicans want to bring back incandescents because they just want to trigger the libs and have decided light bulbs are woke.

And the "LEDs are fine" crowd are throwing people with flicker sensitivities under the bus. And, no, you don't have to be "pretty far on the spectrum" to notice a difference. And even if you did... why in the world is this person so dismissive of the millions of autistic folks?

LEDs, for the most part, are superior to incandescent bulbs. Collectively they save people billions of dollars in energy costs and greatly reduce fossil fuel use. You have more options for color and brightness. You can control them with your phone. LEDs are fantastic.

Unfortunately there is a design flaw that makes LEDs hard to use for certain people. Due to AC power, most LEDs have a 60hz refresh rate. Meaning they turn off and on 60 times per second. With incandescents this didn't matter because the filament didn't have time to lose its glow between cycles.

Most people cannot see this flicker in LEDs. But there are millions of people who are sensitive to it and it can cause migraines and discomfort.

The solution is definitely not to go back to incandescents. There are flicker free LEDs and I think with some regulation we could make sure all LEDs are flicker free or at least make sure flicker free bulbs are easy to find and not priced at a premium.

Thankfully there is a group testing bulbs to find the ones that will most likely cause no discomfort. They call themselves the Flicker Alliance and their website has a pretty decent selection of tested and approved bulbs.

So if you feel like your LED bulbs might be causing you distress, that is a good resource to try. I think there is also something you can do to make sure the LED drivers are using DC power, but I haven't really looked into that.

[televisionenjoyer]

right. the united states. of course.

i think we all need to complain about LED headlights more. please can we all complain about them more. night driving is nearly impossible for me to do now without having to white knuckle my way through a thousand evil suns. every time i see those headlights in my mirrors i take 2d6 radiant damage. i want to destroy every single LED headlight under my feet like they’re goombas

[agaselectronicmaterials]

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[nyansequitur]

Landed safely and made it through immigration :D

[rbrt2annt]

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