UAV Optics system - Calculator

3/17/20262 min read

Screenshot of a UAV camera calculator interface showing input parameters for drone lens and sensor optics.

Screenshot of a UAV camera calculator interface showing input parameters for drone lens and sensor optics.

Ever spent days recalculating optical systems for different drone cameras?
What will your drone camera actually see at 400m altitude? Will the image be sharp at 200 m/s? Can you detect targets at 1000m distance?
Last year, our SpearX.EU team faced a problem many engineers know too well:
we needed to quickly calculate optical systems for UAVs across different visual spectrums (RGB, SWIR, MWIR, LWIR) & understand exactly what the camera will capture at specific flight parameters.

We searched for available tools. The result? We found nothing suitable.

No existing calculator allowed us to:
🔹 Compare different camera types in one place
🔹 Consider IR spectrum specifics
🔹 See diffraction impact on quality immediately
🔹 Check motion blur for different flight scenarios
🔹 Understand what the camera will actually see at given altitude and distance

So we decided to build our own solution.

It started as a quick internal script, but turned into something much more valuable.
Today I'm proud to share UAV Camera Calculator - a tool from our internal SpearX toolkit, now available to the community completely FREE of charge.

One weekend of work. Weeks of time saved.

What the Calculator Does:
✅ Support for all main visual spectrums:
• RGB (visible light 0.4-0.7μm)
• SWIR (near-IR 0.9-1.7μm)
• MWIR (mid-IR 3.0-5.0μm)
• LWIR (far-IR 8.0-14.0μm)

✅ Full optical calculation:
• Field of View (FOV) and coverage area
• Ground Sample Distance (GSD) for ground imaging
• Pixel size at specified distance
• Diffraction analysis and optimal F# for each camera type
• Depth of field and hyperfocal distance

✅ Motion Blur analysis:
• Flight speed and camera angle consideration
• Perpendicular motion component calculation
• Maximum speed recommendations for sharp images

Key Features:
• Visualization - clear display of coverage area and camera direction
• PDF Reports - complete results with all formulas and calculations
• Smart Recommendations - advice for edge cases (motion blur, diffraction, wrong angles)
• Transparency - every calculation step shows formulas used
• Free Access - available to everyone in the UAV community

Who Is It For:
• UAV Developers
• System Integrators
• Optical UAS System Engineers
• Aerial Photography & Monitoring Specialists

We use this tool in SpearX internal projects daily. It saves our team hours on every project.
This calculator represents a small part of our internal SpearX toolkit. We believe sharing knowledge makes the entire industry stronger.

The tool is completely FREE - no registration, no hidden fees

Go to UAV Optics System Calculator