Floating Focus: The Future of Automated Lens Control

Stepper motors integrated directly into machine vision lenses enable remote motorized adjustment of focus, iris, and zoom via USB or I2C interfaces. The ML Telecentric lens series features a proprietary floating-focus optical design in which internal glass elements shift independently while maintaining perfect telecentricity and measurement precision.

The floating focus mechanism enables microscopic optical adjustments without compromising image quality or requiring physical access to the camera. Four magnification levels (0.25x to 2.0x) with constant f/6.5 aperture deliver optical zoom rather than digital interpolation. Real-time environmental drift correction compensates for thermal and mechanical focus shifts.

Transcript

Speaker 1 Welcome to one thousand Tech Drive, your go to podcast for all things optics and surveillance technology. Each episode will take you on a journey through industry trends and dive into the innovative products from CBC America's Computar and Ganz brands.

Speaker 2 Yeah, and for today's deep dive, we've got a really fascinating stack of technical sources from Computar on the desk.

Speaker 1 We do specifically looking at their LensConnect technology. Our mission today is uncovering how remote motorized machine vision lenses are. Well, they're basically changing high stakes factory automation, right?

Speaker 2 Quietly revolutionizing.

Speaker 1 Exactly. Because if you think about the physical reality of these factory systems, trying to manually adjust an inspection camera that's hidden deep behind heavy safety guarding, it's I mean, it's like trying to thread a needle while riding a roller coaster.

Speaker 2 It's slow. And honestly, it's incredibly dangerous.

Speaker 1 Yeah. And it invites costly errors.

Speaker 2 It's a massive operational bottleneck. And that's exactly what Computar's LensConnect series addresses. They solve that physical access problem directly.

Speaker 1 By integrating stepper motors right into the lens. Right?

Speaker 2 Exactly. They put the stepper motors right into the assembly using plug and play USB or 12 C interfaces. And what's really wild is how unique these lenses are.

Speaker 1 Wait, nobody else is doing this?

Speaker 2 No. I mean, other manufacturers make motorized zoom lenses. Sure. But Computar is the only one making true motorized machine vision lenses.

Speaker 1 Oh, wow.

Speaker 2 Yeah. They actually introduced these back in 2021 and some award winning lenses, and it totally changes the game. Instead of shutting down a whole production line, right.

Speaker 1 And sending a tech to physically climb inside the machinery.

Speaker 2 Exactly. Operators just tweak the focus, the iris and the zoom entirely remotely. You're eliminating major downtime and drastically reducing those costly maintenance visits.

Speaker 1 Okay, wait, but putting stepper motors directly inside the assembly doesn't the vibration from those moving parts just instantly ruin the microscopic accuracy you need?

Speaker 2 You would think so.

Speaker 1 Because if you're doing like semiconductor or PCB inspection, Any physical movement usually introduces tiny mechanical shifts.

Speaker 2 Right? You assume the mechanical shift would throw off the measurements completely, right? But Computar actually engineered around that.

Speaker 1 How?

Speaker 2 With their January 2026 release, the ML Telecentric lens series, they use this really advanced floating focus optical design.

Speaker 1 So the whole lens isn't moving.

Speaker 2 No. Instead of moving the entire lens, block, specific internal glass elements shift independently of one another. Oh, okay. So this internal compensation absorbs the mechanical adjustment. The lens maintains perfectly telecentricity even while the motors are actively changing the focus.

Speaker 1 So the magnification and perspective remain absolutely rigid. That is clever.

Speaker 2 It's brilliant.

Speaker 1 And looking at the specs and the sources here, they're doing this across four distinct magnifications, right from a 0.25x up to 2.0 x.

Speaker 2 Yes. And while holding a constant f 6.5 aperture.

Speaker 1 Giving you optimal light transmission across the entire range.

Speaker 2 Without any distortion. And once production managers realize mechanical movement doesn't degrade the optical precision, the applications just explode. It drastically improves operational efficiency.

Speaker 1 Because now you can leverage true optical zoom on the fly exactly like it's the difference between pinching to zoom on your smartphone, where you just get a blurry pixelated crop.

Speaker 2 Right? Digital zoom.

Speaker 1 Yeah. Versus using a professional camera lens to physically adjust the optics for a crystal clear, magnified image.

Speaker 2 Which plays directly into handling environmental drift, say, heavy machinery, vibrations cause a gradual focus shift over a twelve hour shift, which.

Speaker 1 Happens all the time.

Speaker 2 All the time. Well, operators can instantly correct that drift remotely. You never have to stop the line or initiate those dangerous lockout and tagout procedures.

Speaker 1 Huge cost savings right there. And it enables seamless recipe based imaging too.

Speaker 2 Oh, totally. For multi skew product lines, you don't need a technician to manually swap lenses between runs. You just load a saved software preset and the lens physically adjusts itself to the exact right size.

Speaker 1 It completely changes the throughput math. And if you're listening, I want to see the hardware actually handle these instant adjustments. Computar is doing live hands on demos at the Automate Show 2026 in Chicago this June.

Speaker 2 Definitely worth checking out.

Speaker 1 You know, it's funny, you might never step foot on a factory floor yourself, but the flawless quality of the electronics, the screens, even the pharmaceuticals you use every day, they all rely directly on this hidden, remote controlled precision.

Speaker 2 Which really makes you wonder where this goes next. Oh well. As these lenses become entirely software driven, the next logical leap is self-aware AI optical systems.

Speaker 1 Wait, really?

Speaker 2 Yeah. Imagine a near future where the camera automatically analyzes its own image drift and just corrects its focus and zoom in real time.

Speaker 1 Taking the human off the roller coaster for good.

Speaker 2 Removing the human from the adjustment loop entirely.

Speaker 1 Letting the machines thread the needle perfectly every single time. Well, that is definitely something for you to mull over until our next deep dive.