iRayUSA · RICO Mk2 RH50R

Estimated range, standing human, clear air

IdentifyRecognizeDetectBox claim

iRayUSA RICO Mk2 RH50R640×512 · 12 µm · 50 mm

160 m identify260 m recognize1,042 m detectbox says 2,190 m (unspecified)

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Estimated from pixel pitch and lens focal length using the Johnson criteria (2, 8 and 13 pixels across a 0.5 m human critical dimension), clear air, 50 % probability. A model of the optics, not a measurement — real range depends on temperature contrast, humidity and the animal.

iRayUSA

iRayUSA RICO Mk2 RH50R

Riflescope640-classLaser rangefinder

The iRayUSA RICO Mk2 RH50R is a 640×512, 12 µm thermal riflescope behind a 50 mm lens, with a built-in laser rangefinder. On the Johnson yardstick that is an estimated 1,042 m detection and 260 m recognition range for a standing person; iRayUSA quotes 2,190 m detection. The box figure is 2.1× the Johnson estimate — a narrower gap than most of the 60 claims recorded here.

Approx. price: ~$5,499
Sensor: 640×512 · 12 µm
Lens: 50 mm · 3×
Est. detection: 1,042 m · 1,140 yd

Best for

Night shooting where ranging matters — hogs and coyotes past 150 yards

We may earn a commission. Price and availability on iRayUSA’s site may differ.

Box claim vs. what the optics support

Manufacturer says

2,190 m

detection, unspecified

Johnson estimate

1,042 m

detect · 260 m recognize · 160 m identify

Claim ÷ estimate

2.1×

how much further the box reaches than a 2-pixel, 0.5 m criterion

One pixel of this unit sees 0.240 mrad (12 µm ÷ 50 mm). Two pixels across a 0.5 m human is 0.5 ÷ (2 × 0.240) × 1000 = 1,042 m. The box figure is usually computed against a person’s 1.8 m height instead, which is why it comes out higher. Full explanation.

Specifications

Manufacturer-published figures, cross-checked against irayusa.com.

Sensor: 640×512
Pixel pitch: 12 µm
NETD: <20 mK
Refresh rate: 60 Hz
Lens: 50 mm
Base magnification: 3×
Digital zoom: up to 4×
Field of view: 8.8° horizontal
Display: 2560x2560 AMOLED
Claimed detection: 2,190 m
Claim basis: unspecified
Run time: 5 h
Battery type: Removable pack
Weight: 36.6 oz
Length: 9.5″
Laser rangefinder: Yes
Ballistic calculator: No
Records video: Yes
Wi-Fi: Yes
IP rating: IP67
Warranty: 5 years
Country of origin: China
Approx. price: ~$5,499

Derived here

IFOV: 0.240 mrad
Est. detection: 1,042 m
Est. recognition: 260 m
Est. identification: 160 m
Claim ÷ estimate: 2.1×
Derived field of view: 8.8°
Pixels per degree: 72.9

Features

640 sensor
12 µm
50 mm lens
60 Hz
LRF
Removable battery
Records video
Wi-Fi
IP67
NETD ≤ 20 mK
AMOLED display

What the spec sheet says

Read from the published specifications and this catalog’s own numbers — not from owner reports, which we have not collected for this unit.

For it

640×512 core — 3.0× the pixels of a 384-class unit
12 µm pitch — the 50 mm lens sees what a 17 µm core would need 71 mm to match
Published NETD of <20 mK, 13th-lowest of the 51 units here that publish one
60 Hz core — 20 % more frames than the 50 Hz norm when an animal runs
Built-in laser rangefinder
Removable battery pack — a spare in the pocket doubles the run time
IP67 sealed — survives immersion, not just rain

Against it

36.6 oz — 7th-heaviest of the 36 riflescopes here
NETD published only as a ceiling (<20 mK), not a measured figure
Rangefinder but no ballistic calculator — the holdover is still yours to work out
~$5,499 against a ~$3,749 median for riflescopes here
36.6 oz, above the 27.5 oz median for riflescopes here