Orbbec Gemini 305 and Gemini 305g: Close‑Range Stereo 3D Vision for Robotic Arms

Close‑range 3D vision has become essential for modern robotics—especially for manipulation, grasping, assembly, inspection, and fine movement. To meet these needs, Orbbec introduced two ultra‑compact stereo cameras purpose‑built for robotic wrist mounting: the Gemini 305 and the Gemini 305g. Both target sub‑millimeter accuracy, low latency, and robust performance for cobots, industrial arms, and humanoid robots.

 

What Is the Orbbec Gemini 305?

The Gemini 305 is an ultra‑light (68 g), ultra‑small (42 × 42 × 23 mm) stereo RGB‑D camera designed for the end effector, enabling ultra‑close depth capture from 4 cm—ideal for small‑part manipulation, assembly, and object recognition at the fingertips. It streams synchronized color and depth in real time and is rated IP54 for dust/splash protection.

Key Gemini 305 features

• Ultra‑close depth: minimum working distance 4 cm with sub‑millimeter accuracy at short range.
• Wide FOV: Depth 88° × 65°, Color 94° × 68°—optimized coverage at the wrist.
• Real‑time streaming: up to 1280 × 800 @ 60 fps for color/depth; end‑to‑end latency ~60 ms.
• Decoupled depth–color architecture: independently configure resolutions while keeping spatial/temporal alignment.
• Multi‑camera sync: hardware and software synchronization for coordinated capture.

Recommended applications

• Collaborative robots (cobots)
• Robotic grasping and humanoid hands
• Small‑part inspection and precision pick‑and‑place
• Industrial arms in controlled environments

 

What Is the Orbbec Gemini 305g?

The reinforced variant for high‑vibration, EMI‑prone environments

The Gemini 305g builds on the 305’s visual performance but replaces USB with GMSL2 + FAKRA for low‑loss, flexible cabling that tolerates twisting, bending, high vibration, and electrical noise—a better fit for industrial arms, long cable runs, and environments with strong EMI.

What the 305g adds on top of the 305

• GMSL2 serializer + FAKRA connector for robust, long‑distance, high‑bandwidth links.
• Industrial‑grade cabling for stable transmission on moving robots.

The same compact form factor, performance targets, and imaging presets as the 305.

 

Gemini 305 vs. Gemini 305g: What’s the Difference?

• Connectivity: 305 = USB 3.0 (Type‑C); 305g = GMSL2 + FAKRA for ruggedized, long‑run cabling.
• Best fit: 305 for cobots/clean setups; 305G for industrial arms/high vibration/EMI.
• Form factor: ~68 g, 42 × 42 × 23 mm (palm‑sized) on both.
• Latency & range: ~60 ms latency; 4–100 cm operating range, sub‑millimeter precision at close distances.
• Ingress protection: IP54 for both (with interface cover).

In short: choose Gemini 305 if you need a feather‑light, USB‑based wrist camera for clean environments; choose Gemini 305g if your robot sees constant motion, cable flex, EMI, or long cable runs.

 

Why These Cameras Matter for Robotics Projects

1) Sub‑millimeter accuracy at fingertip distances

Crucial for precision grasping, assembly, and small‑part recognition within 4–50 cm.

2) Low‑latency perception for real‑time control

Up to 1280 × 800 @ 60 fps with ~60 ms end‑to‑end latency enables fast, stable feedback loops.

3) Independent depth/color configuration

Optimize throughput and algorithm performance without sacrificing alignment.

4) Robustness for mobile/industrial robotics (305g)

GMSL2/FAKRA ensures signal integrity under twisting, bending, vibration, and EMI.

Which One Should You Choose?

Choose Gemini 305 if you need…

• A USB‑based, ultra‑light wrist camera
• Clean, controlled environments (cobots, labs, compact cells)
• High‑quality Depth + RGB with minimal integration friction
  
  

Choose Gemini 305g if you need…

• Ruggedized cabling for constant arm motion and tight routing
• Long cable runs with high bandwidth and low loss
• Better resilience to EMI and vibration on industrial arms

 

With Gemini 305 and Gemini 305g, Orbbec delivers an exceptional combination of close‑range accuracy, low latency, compact size, and industrial‑grade connectivity—precisely what modern robotic manipulation demands. These cameras are engineered to improve end‑effector agility and reliability, from cobots to industrial and humanoid systems.