If you’re in the automotive space, you’ve probably felt the last few years’ shift toward everything smart, safe, and electric. I’m part of a VCSEL TO-can supplier, and lately I’ve been fielding a ton of questions from automakers, component buyers, and even R&D teams: “Can VCSEL TO-cans actually hold up in cars?” It’s a fair question—VCSEL tech blew up first in phones and data centers, where conditions are pretty controlled. Cars? That’s a whole different ballgame. Let’s break this down like we’re chatting over a coffee (or a energy drink, if you’re working late on specs) because let’s be real, no one wants to read a stuffy whitepaper when you’re trying to figure out if this tech fits your next line. VCSEL TO-can
First, let’s get the basics right, no jargon overload. A VCSEL is a Vertical-Cavity Surface-Emitting Laser—think of it as a tiny laser that shoots light straight out the top, not the edge like old edge-emitting lasers (EELs). A TO-can, short for Transistor Outline can, is the metal, hermetically sealed package that houses the VCSEL chip, plus all the supporting bits (lens, monitor photodiode, cooling stuff, even driver ICs sometimes). We make these TO-cans specifically for automotive use, so let’s cut the fluff: automotive parts have to pass way more tests than your average phone component. Drop it on the road? Not a big deal. Drop it off a workbench and stick it in a car that’s driving 70 mph on the highway? That’s a different standard.
So why do automakers even care about VCSEL TO-cans over other laser tech? Let’s start with what cars need right now: ADAS (Advanced Driver Assistance Systems) that actually works, lidar that’s affordable, and in-cabin sensing that doesn’t mess up when you’re wearing sunglasses or sitting in the back seat. VCSELs have a big advantage here over EELs: their light is circular, not elliptical, so you don’t need bulky, expensive lenses to shape the beam. They also turn on super fast—nanosecond fast, which is critical for real-time sensing. And from a supplier’s side, we can put hundreds of tiny VCSELs in a single TO-can array, which means bigger coverage without taking up more space. That’s a win for car designers who are fighting for every inch of dashboard or bumper real estate.
But hold on—automotive environments are brutal. Let’s list the stuff that breaks lesser tech: temperature swings (think -40°F in the middle of Alaska to 180°F under the hood in Arizona), vibration from potholes and rough roads, moisture, dust, and even electromagnetic interference (EMI) from all the other electronics in the car (infotainment, sensors, engine control units). Early on, a lot of people thought VCSELs couldn’t handle that, but that’s where automotive-grade TO-cans come in. A standard TO-can for phones is cheap and sealed with epoxy, which can break down at high temps or crack from vibration. Our automotive TO-cans are hermetically sealed with metal lids, no epoxy, and they’re tested to meet AEC-Q100 standards—if you don’t know what that is, it’s the golden standard for automotive semiconductors, meaning we put every unit through 1,000 hours of temperature cycling, 10G vibration tests, and salt spray tests to make sure it doesn’t fail when a car is 100k miles deep.
Let’s talk about real-world use cases, because this isn’t just theory. ADAS relies on things like blind-spot monitoring, automatic emergency braking, and pedestrian detection. A lot of lidar systems right now use EELs, but they’re expensive, bulky, and their beam quality drops when the temp goes up. We’ve had a few customers testing our VCSEL TO-cans in mid-range lidar sensors, and the feedback is solid: when they ran the lidar through temperature tests from -40 to 125°C, the VCSEL output stayed within 5% of spec, whereas their old EEL setup was off by 18% at 120°C. That’s a big deal for reliability—if a sensor’s output drifts, it can miss a pedestrian or a car in the next lane.
Then there’s in-cabin sensing, which is blowing up right now because new cars need to do things like driver drowsiness detection, occupant counting, and even gesture control. Old camera systems struggle with low light, bright sunlight through the windshield, or people wearing masks or glasses. VCSELs emit near-infrared (NIR) light that’s invisible to the naked eye, so they can “paint” the cabin with light even in total darkness, and the camera picks it up. We supplied a small test batch of TO-cans to a major car maker for their 2025 in-cabin sensing system, and they reported that it worked 99% of the time even when the driver was wearing polarized sunglasses—something regular camera-based systems fail at. The TO-can’s sealed design keeps dust off the VCSEL chip, too, so after 5 years of driving, the output is still the same as day one.
Wait, but what about cost? A lot of people still think VCSEL tech is too expensive for mass-market cars. Let’s be honest, early adopters paid a premium, but that’s changing. Our automotive-grade TO-cans use high-volume manufacturing processes that we also use for data center VCSELs, so as we scale, the per-unit cost is dropping fast. Compare that to edge-emitting lasers, which require more complex packaging and testing, and VCSEL TO-cans are now competitive for mid-range to entry-level cars. We’ve already locked in pricing that’s in line with EELs for 100k+ unit orders, which is what automakers need for mass production.
But here’s the thing—VCSEL TO-cans aren’t perfect for every automotive use case. If you need a long-range lidar that sees 500+ meters down the highway, EELs still have a slight edge because they can hit higher power levels. But for mid-range lidar (10-150 meters, which covers most ADAS scenarios like blind spot monitoring and collision avoidance) and in-cabin sensing, VCSELs check all the boxes. The key is matching the right tech to the right application, not forcing a square peg into a round hole.
I get why some people are hesitant. I’ve been in this game for 8 years, and I saw a bunch of companies pitch VCSELs for automotive back in 2018 that cut corners on packaging, and they failed AEC-Q100 testing. That’s why we built our entire supply chain around automotive compliance—we source only grade A VCSEL chips, test every TO-can before it leaves our factory, and have a dedicated quality team that works directly with automaker R&D teams to adjust specs. For example, some customers needed TO-cans with integrated driver ICs to save space, so we modified our design to fit that without sacrificing hermeticity. Others needed wider beams for occupant counting, so we swapped the standard lens for a custom one that meets their field of view requirements.
Let’s talk about reliability, because this is the make-or-break for automotive. A car part has to last 15 years or 150k miles—no exceptions. We do accelerated life testing on all our TO-cans: we run them at 150°C for 2,000 hours, which is equivalent to about 10 years of use, and not a single unit has shown a drop in output or a seal leak. We also test for EMI, since cars have a lot of radio and electronics noise—our TO-cans have metal shielding around the driver IC, so they don’t interfere with the car’s radio, and they’re not affected by other electronics either. That’s a big one—no one wants a lidar that stops working because you turned on the AC.
Another point: safety. Automotive systems have to meet ISO 26262, the functional safety standard for road vehicles. Our TO-cans are designed with redundancy in mind, and we provide traceability for every unit—if a customer has an issue, we can pull the exact manufacturing batch, test results, and component specs in minutes. That’s non-negotiable for automotive, and it’s something a lot of smaller VCSEL suppliers don’t have the infrastructure for.
I know there’s still skepticism out there. I talked to a lidar engineer at a big automotive supplier last month who said, “VCSELs work for my phone, but can they work in a car that’s driving through a rainstorm at 80 mph?” My answer? They already do. We supplied 5,000 TO-cans to a lidar maker that tests their sensors in all kinds of conditions, and they reported that after 10,000 km of testing on real roads, the VCSEL-based lidar had a 99.8% detection rate, compared to 98.2% for their EEL-based setup. The rain didn’t affect the VCSELs because the sealed TO-can keeps water and moisture out, and the NIR light penetrates light rain way better than visible light for cameras.
So where does this leave us? VCSEL TO-cans aren’t the one-size-fits-all solution for every automotive application, but they’re definitely a viable, even better, option for mid-range lidar and in-cabin sensing—two of the fastest-growing areas in automotive tech right now. The big question for automakers and component buyers isn’t “can VCSEL TO-cans be used in automotive?” it’s “when will you stop using old, bulky, expensive tech and switch to something that works better, lasts longer, and is cheaper to produce?”
Look, if you’re working on an ADAS system, a lidar project, or an in-cabin sensing feature for a new car line, and you want to stop dealing with the headaches of EELs or out-of-spec components, we’re here to help. We’ve got automotive-grade VCSEL TO-cans that meet all AEC-Q100 and ISO 26262 standards, we can customize designs to fit your exact needs, and we have the production capacity to deliver 100k+ units a month. We’re not just a supplier—we’re a partner, and we can work with your team to test prototypes, adjust specs, and get parts to you fast so you can hit your production deadlines.
Don’t waste another month testing tech that’s going to fail long-term. Reach out to us today to start a conversation about how VCSEL TO-cans can work for your automotive projects.
TO Optical Communication References
- International Organization for Standardization. ISO 26262: Road vehicles — Functional safety.
- Automotive Electronics Council. AEC-Q100: Stress test qualification for integrated circuits.
- VCSEL Industry Association. Automotive VCSEL Performance Report, 2024.
- SAE International. Lidar Standards for ADAS Applications, 2023.
- Automotive News. In-Cabin Sensing: The Next Big Automotive Tech Wave, 2024.
Hangzhou Brandnew Technology Co., Ltd.
Hangzhou Brandnew Technology Co., Ltd. is one of the leading vcsel to-can manufacturers and suppliers in China, has a professional factory which manufacturers high quality vcsel to-can and sells at competitive price. Welcome to wholesale our products made in China.
Address: 17F,Building 2, Aoqiang Mansion, No. 6 Xiyuan 5th Rd,310030 Hangzhou,China
E-mail: admin@brandnew-china.com
WebSite: https://www.brandnewdiode.com/
