InfiRay Finder FL35R

• Integrated laser rangefinder: The built-in rangefinder measures from 1.00 m to 800.00 m with +/- 1 m accuracy, helping with faster distance assessment when scanning fields, woodland edges, or open ground at night.
• 384x288 thermal sensor with 12.00 μm pixel pitch: This sensor format balances detail, detection capability, and compact size, making the monocular practical for handheld observation without adding unnecessary bulk.
• 35.00 mm F1.0 objective lens: The fast aperture gathers more thermal energy for a clearer image in difficult weather and low-contrast scenes, which helps separate animals, people, and background terrain more easily.
• OLED 1024×768 display: The high-resolution OLED screen presents thermal detail with strong contrast, reducing the coarse appearance common to lower-grade displays and making longer observation sessions more comfortable.
• Compact 400.00 g housing: At 160.00 mm long and designed for one-handed use, the Finder FL35R is easy to carry in the field and quick to bring into action during mobile hunting or general outdoor observation.

About the InfiRay Finder Series

The InfiRay Finder series is a family of handheld thermal imaging monoculars built for users who need compact thermal observation equipment rather than a weapon-mounted optic. InfiRay positions the range for outdoor observation, hunting, and professional outdoor use, with an emphasis on small size, one-handed handling, and practical field features. Across the series, the design stays focused on portability: Finder models are made to be easy to carry, quick to deploy, and comfortable to use during long periods of scanning.

A defining trait of the family is the combination of 12 μm thermal detectors with a built-in laser rangefinder. That pairing gives the series a clear role in the manufacturer’s lineup: it is intended not only to detect heat sources, but also to help users judge distance more confidently in darkness, brush, or broken terrain. The range includes models such as FH25R and FL25R, FH35R and FL35R, and later V2 variants, giving users different sensor and optical configurations within the same compact format. The result is a thermal monocular line that prioritizes field mobility, practical ranging, and straightforward operation over bulkier, more specialized systems.

About the InfiRay Finder FL35R

The InfiRay Finder FL35R is a compact thermal LRF monocular built for users who need a handheld observation device with enough optical reach for serious night work. Its 3.40 x optical magnification, supported by digital zoom up to 13.60 x, gives it a useful balance between initial target detection and closer inspection. In practice, this makes the FL35R well suited to scanning open ground, checking tree lines, and confirming heat signatures at longer distances without moving to a larger thermal unit. The stated 1818.00 m detection range reinforces that role, giving the monocular enough reach for wide-area observation.

The thermal core uses a 384x288 sensor with 12.00 μm pixel pitch and 40.00 mK NETD, paired with a 35.00 mm F1.0 lens. Together, these features help the FL35R present useful thermal contrast in damp air, mixed vegetation, and other scenes where weak temperature differences can make observation harder. The OLED 1024×768 display supports a clean, high-contrast viewing image, while the 7.50 ° field of view keeps enough scene width for practical searching.

The built-in 800.00 m laser rangefinder adds a major practical advantage, allowing the user to confirm distance without carrying a separate device. For field use, the FL35R also includes photo capture, video recording, video output, and WiFi connectivity, so observations can be stored or shared more easily. Its 400.00 g weight, replaceable Li-ion power system, and 6.00 h battery life keep the unit suitable for mobile use, while the waterproof and fogproof construction supports reliable operation in changing weather.

About IRay

IRay develops and manufactures infrared detectors, thermal camera cores and modules, and thermal imaging cameras. Within the outdoor segment, InfiRay Outdoor focuses on optoelectronic products such as thermal and digital riflescopes, thermal and night-vision monoculars and binoculars, and related observation devices. Its product portfolio includes handheld lines such as Eye II, Eye III, AFFO, ZOOM, Finder, UNIQUE, Gemini and Iris, alongside riflescope families including Holo, Rico, Tube, Geni and Hybrid.

The company’s background in core thermal technology is especially relevant here. IRay identifies IC design, MEMS sensors and Matrix III image algorithms among its key technologies, showing that its expertise extends beyond final assembly into the detector and image-processing side of thermal imaging. That technical focus helps explain the brand’s strong presence in thermal hunting optics, handheld thermal monoculars, and other outdoor observation devices where image processing and sensor performance matter as much as the housing design.

Main Features

• Product type: Thermal monocular with built-in laser rangefinder
• Series: InfiRay Finder
• Magnification: 3.40 x
• Digital zoom: up to 13.60 x
• Objective lens: 35.00 mm
• Lens aperture: F 1.0
• Field of view: 130.80 m/1000m
• Field of view (degrees): 7.50 °
• Diopter range: -5/+5
• Detection range: 1818.00 m
• Thermal sensor type: Uncooled
• Thermal sensor resolution: 384x288
• Pixel pitch: 12.00 μm
• NETD: 40.00 mK
• Calibration mode: Manual
• Display type: OLED
• Display resolution: 1024×768
• Image capture: Yes
• Video recording: Yes
• Video output: Yes
• Built-in rangefinder: Yes
• Rangefinder range: 1.00 m - 800.00 m
• Rangefinder accuracy: +/- 1 m
• Connectivity: Wifi
• Battery type: Li-ion
• Battery life: 6.00 h
• Dimensions: 160.00 mm x 90.00 mm x 50.00 mm
• Weight: 400.00 g
• Operating temperature: -20 ° / + 40° C
• Waterproof: Yes
• Fogproof: Yes
• Color: Black
• Country of manufacture: China

Warranty

IRay provides a 3-year warranty for the device main body under normal use and maintenance conditions. The manufacturer also states separate coverage periods for certain components and accessories, but the main unit warranty period is 3 years.