Description
The HD650LRF is a 640 × 512 thermal imaging riflescope built around a 50 mm F1.0 objective lens and an integrated 1200 m laser rangefinder. Detection reaches 2600 m on a 1.8 m × 0.5 m target — enough to identify a vehicle or a person long before they can see you.
What separates it from a plain thermal scope is the on-board ballistic computer. Five profiles (A–E) can be loaded with selectable gun profiles or fully custom drop values, and the rangefinder feeds distance straight into the aiming solution, so holdover is calculated rather than estimated.
Why the HD650LRF
- First-shot auto zero — complete a 25 m zero in a single guided shot with a 15-second countdown. No more firing groups to walk the reticle in.
- Recoil-activated recording — the scope detects the shot and automatically saves the 15 seconds before and the 15 seconds after. Nothing is missed when reviewing a session.
- 50 mm F1.0 germanium objective — a 8.8° × 7.0° field of view with a fast aperture for high-contrast imagery in low thermal contrast conditions.
- AMOLED display at 2560 × 2560 — high resolution viewfinder image with 10 reticle types and 9 colour options.
- 64 GB built-in storage with Wi-Fi streaming to a mobile device, plus a built-in microphone for video sound.
Technical Specifications
| Model | HD650LRF |
|---|---|
| Sensor type | VOx uncooled |
| Sensor resolution | 640 × 512 |
| Pixel pitch | 12 μm |
| NETD | ≤ 20 mK |
| Frame frequency | 50 Hz |
| Objective lens | 50 mm / f1.0 |
| Angle of view | 8.8° × 7.0° |
| Digital zoom | 1× – 8× |
| Detection distance (1.8 m × 0.5 m target) | 2600 m |
| Laser rangefinder range | 1200 m |
| Laser wavelength | 905 nm |
| Ranging accuracy | ± 1 m |
| Display | AMOLED, 2560 × 2560 |
| Palette | White Hot / Black Hot / Ironbow / Glowbow / Sepia / Red Hot / Green Hot |
| Reticle | 10 types (R1–R10), 9 colour options, 1 mil ticks |
| Zeroing profiles | 5 profiles (A–E) |
| Ballistic calculator | Selectable gun profiles plus custom drop values |
| Auto zero | First-shot auto zero at 25 m |
| Recoil-activated recording | 15 s before and 15 s after each shot |
| Scene modes | City / Forest / Stone / Bird |
| Built-in memory | 64 GB |
| Microphone | Built-in, on/off |
| Battery | 4 × 16340 or 4 × 18350 |
| Working time (Wi-Fi off) | 4.5 hrs (16340) / 6 hrs (18350) |
| Weight (without battery) | 930 g |
| Dimensions | 290 × 87 × 73 mm |
| Protection | IP67 |
| Working temperature | −20 °C to +50 °C |
HD Series Comparison
| Model | HD650LRF | HD1260LRF |
|---|---|---|
| Sensor resolution | 640 × 512 | 1280 × 1024 |
| Objective lens | 50 mm / f1.0 | 60 mm / f1.0 |
| Angle of view | 8.8° × 7.0° | 14.6° × 11.7° |
| Detection distance | 2600 m | 3000 m |
| LRF range | 1200 m | 1500 m |
| Weight (without battery) | 930 g | 1016 g |
| Ballistic calculator | 5 profiles | 5 profiles |
| Auto zero / recoil recording | Yes / Yes | Yes / Yes |
Choose the HD650LRF when you want the lighter body and the 2600 m detection envelope at the lower price point. Choose the HD1260LRF when maximum target detail and the 3000 m / 1500 m ranging envelope matter more than weight.
Frequently Asked Questions
What is the detection range of the HD650LRF?
Up to 2600 m on a 1.8 m × 0.5 m target (the standard NATO vehicle target). Recognition and identification ranges are shorter than detection range.
Does the laser rangefinder work at night?
Yes. It uses an eye-safe 905 nm laser and works in total darkness. Range is 1200 m with ± 1 m accuracy in the HD650LRF.
How does first-shot auto zero work?
Enter Auto Zero, confirm the 25 m zero range, wait for the 15-second preparation countdown and fire one aimed shot at the target. The scope calculates and applies the correction.
Can I record video while shooting?
Yes. In addition to manual photo and video recording, recoil-activated recording automatically saves the 15 seconds before and after each detected shot.
What batteries does it use?
Four 16340 or four 18350 cells. Runtime is approximately 4.5 hours with 16340 and 6 hours with 18350, with Wi-Fi off.
Is the HD650LRF available for OEM or ODM projects?
Yes. ERDI-infrared supplies OEM and ODM customers; contact us with your platform, interface and branding requirements.
