N-Vision · NOX35

Estimated range, standing human, clear air

IdentifyRecognizeDetectBox claim

N-Vision NOX35640×480 · 12 µm · 35 mm

112 m identify182 m recognize729 m detectbox says 1,360 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.

N-Vision

N-Vision NOX35

Riflescope640-class

The N-Vision NOX35 is a 640×480, 12 µm thermal riflescope behind a 35 mm lens. On the Johnson yardstick that is an estimated 729 m detection and 182 m recognition range for a standing person; N-Vision quotes 1,360 m detection. At 18.7 oz it is 11th-lightest of the 36 riflescopes here, where the median is 27.5 oz.

Approx. price: ~$6,795
Sensor: 640×480 · 12 µm
Lens: 35 mm · 2.5×
Est. detection: 729 m · 797 yd

Best for

A dedicated night rifle for hogs and coyotes inside about 150 yards

We may earn a commission. Price and availability on N-Vision’s site may differ.

Box claim vs. what the optics support

Manufacturer says

1,360 m

detection, unspecified

Johnson estimate

729 m

detect · 182 m recognize · 112 m identify

Claim ÷ estimate

1.9×

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

One pixel of this unit sees 0.343 mrad (12 µm ÷ 35 mm). Two pixels across a 0.5 m human is 0.5 ÷ (2 × 0.343) × 1000 = 729 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 nvisionoptics.com (multi-use weapon sight, helmet, handheld; weight is 18650 config w, o mount; 4-7+ h on 18650, ~1 h on CR123), nvisionoptics.com warranty page.

Sensor: 640×480
Pixel pitch: 12 µm
Refresh rate: 60 Hz
Lens: 35 mm
Base magnification: 2.5×
Digital zoom: up to 8×
Field of view: 12.2° horizontal
Display: 640x480 OLED
Claimed detection: 1,360 m
Claim basis: unspecified
Run time: 4 h
Battery type: 18650
Weight: 18.7 oz
Length: 6.8″
Laser rangefinder: No
Ballistic calculator: No
Records video: No
Wi-Fi: No
Warranty: 5 years
Country of origin: USA
Approx. price: ~$6,795

Derived here

IFOV: 0.343 mrad
Est. detection: 729 m
Est. recognition: 182 m
Est. identification: 112 m
Claim ÷ estimate: 1.9×
Derived field of view: 12.5°
Pixels per degree: 51.1

Features

640 sensor
12 µm
35 mm lens
60 Hz
Removable battery
Under 20 oz
OLED 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

640×480 core — 2.8× the pixels of a 384-class unit
12 µm pitch — the 35 mm lens sees what a 17 µm core would need 50 mm to match
60 Hz core — 20 % more frames than the 50 Hz norm when an animal runs
Runs on 18650 cells you can swap in the field
Detection claim is only 1.9× our estimate — one of the more conservative box figures here
Warranty: 5 years

Against it