640 vs 384 Thermal Modules: What UAV Integrators Should Compare
By Haihan Defence ·
A higher detector resolution can preserve more spatial detail, but it does not determine every part of a thermal imaging system. For a UAV project, compare resolution together with the lens, field of view, video output and available processing hardware.
Start with native detector resolution
The HN-MINI640 uses a 640 × 512 detector, while the HN-MINI384 uses a 384 × 288 detector. These figures describe the native sensing array. A listed 720 × 576 video output is an output format; it does not change the number of detector pixels or create additional native thermal detail.
Compare the optics at your working distance
The listed HN-MINI640 configuration has a 9.1 mm lens and a horizontal field of view of 48.3°. The HN-MINI384 has a 9.7 mm lens and a horizontal field of view of 26.46°. These configurations cover different scene widths. A wider view may help with coverage, while a narrower view may be appropriate when concentrating on a smaller area.
Compare candidate modules using the same target size and working distance. Resolution comparisons without lens and field-of-view information can lead to an unsuitable choice. Both listed modules specify a 2 m minimum focus distance.
Include interfaces and power
The HN-MINI640 lists simultaneous CVBS and USB output. The HN-MINI384 lists CVBS / USB interfaces; confirm the required operating configuration with us. Their supply ranges also differ: 3.5–15 V DC for HN-MINI640 and 5–16 V DC for HN-MINI384. Both list ≤23 g weight and ≤0.8 W power consumption.
Make a project-specific shortlist
Before selecting a module, define the scene, receiving hardware, mechanical envelope and power rail. Confirm frame rate and interface documentation rather than assuming all modules share the same operating parameters.
Review the HN-MINI640 specifications and HN-MINI384 specifications, or send your integration requirements for a technical discussion.