openelab.de
openelab.com
Last Updated: March 2026
Need your robot to see precisely at close range? The Orbbec Gemini 305 is built specifically for this—wrist-mounted depth sensing that's lightweight and accurate. I've tested it on robotic arms, and the results are genuinely impressive.
What is the Gemini 305?
The Gemini 305 is a stereo vision camera—not ToF. This means it uses two sensors to calculate depth through triangulation, like human eyes. The advantage: excellent close-range accuracy without active illumination.
What makes it special: 68 grams. That's light enough for robotic wrist mounting where every gram matters.
Specifications
| Specification | Value |
|---|---|
| Technology | Stereo Vision |
| Range | 4-100 cm |
| Precision | ≤1% at 50 cm |
| Depth Resolution | 1280×800 @ 30fps |
| Weight | 68g |
| Dimensions | 42×42×23mm |
Key Features
1. Ultra-Lightweight
At 68g, the Gemini 305 won't overload small robotic arms. This opens up applications on cobots and smaller robots where weight is critical.
2. Close-Range Precision
Stereo vision excels at close range. The 4-100cm range covers typical arm-length tasks, and ≤1% precision means accurate grasping.
3. Global Shutter
Unlike rolling shutter cameras, global shutter captures the entire frame simultaneously. This matters for moving parts—no motion distortion.
4. IP54 Rated
Dust and splash resistant. Handles factory floor conditions better than delicate optics.
Use Cases
Pick and Place
Bin picking, component placement—where the robot needs to see what's right in front of it.
Cobots
Human-robot collaboration where the camera sits on the wrist, close to the action.
Assembly
Precision insertion, screw driving, where millimeter accuracy matters.
Conclusion
The Gemini 305 fills a specific niche: lightweight, close-range depth sensing for robotics. If that's what you need, it's an excellent choice.
Shop: OpenELAB
