Pulsar Merger LRF XL50 HD Thermal Imaging Binoculars

The Pulsar Merger LRF XL50 thermal imaging binoculars offer a large-format HD sensor and a broad view at 2.5x. Two-eyepiece viewing combines with an integrated laser rangefinder, giving wildlife observers a familiar binocular viewing position alongside thermal detection and direct distance measurement.

Key features

• Two-eyepiece thermal viewing in a familiar binocular format.
• Adjustable eyepiece spacing and individual dioptre correction.
• Integrated laser rangefinder for direct distance measurement.
• Built-in battery plus a replaceable rechargeable battery.
• Adjustable thermal image settings and selectable colour palettes.
• Photo and video recording with Stream Vision 2 smartphone connectivity.

Thermal image and field of view

The 1024 × 768, 12µm sensor works with a 50mm f/1.0 objective lens. At the 2.5x starting magnification, the horizontal field of view is 14°, equivalent to 24.6m at 100m. Digital zoom provides a closer view when you want to inspect an object already located.

The quoted detection range is up to 2,300m. This is a detection figure, not an identification guarantee; usable detail depends on the subject, distance and conditions.

Adjust image processing to the conditions

Sensor NETD is below 40mK, with system NETD below 20mK. Thermal sensitivity helps distinguish small temperature differences between a subject and its surroundings. Sensitivity amplification, brightness and contrast controls let you adjust the image as thermal contrast changes. Choose from 9 thermal colour palettes with supporting current firmware to change the presentation of temperature differences.

Magnification and Picture-in-Picture

Picture-in-Picture displays a magnified inset while retaining the wider scene in the main viewing area. This allows closer examination of an object without filling the entire display with the zoomed view. Magnification can be adjusted through the 2.5–20x range.

Two-eyepiece viewing and practical controls

The familiar binocular form provides two-eyepiece viewing, with adjustable eyepiece spacing and dioptre correction for setting up the image to suit your eyes. A proximity sensor can switch the displays off when the binoculars are moved away from your face. The magnesium alloy body has IPX7 waterproof protection.

Integrated laser rangefinder

The built-in laser rangefinder measures up to 1,000m with a stated accuracy of ±1m. Maximum usable range depends on the object and conditions. Direct ranging adds distance information alongside the thermal image.

Rechargeable power

The dual-battery system combines an internal rechargeable battery with a removable APS3 pack. A separately purchased spare can replace a depleted external pack during longer outings. Actual endurance depends on temperature, recording and wireless use.

Recording and smartphone connectivity

Capture still photographs and video with sound directly to the 64GB internal memory. Stream Vision 2 connects a compatible Android or iOS smartphone or tablet for live viewing, remote control, downloading files and firmware updates. Dual-band Wi-Fi supports both 2.4GHz and 5GHz connections.

Compare with similar models

Merger LRF XL50 or Merger LRF XP50?

Compare the Pulsar Merger LRF XP50. The XP50 uses a 640 × 480 sensor and 12.4° field of view, while the XL50 combines higher sensor resolution with a wider 14° view at the same 2.5x starting magnification.

Merger LRF XL50 or Merger LRF XT50?

Compare the Pulsar Merger LRF XT50. The XT50 offers a 1280 × 1024 sensor, wider 17.5° view at 2x, image stabilisation and a 1,500m rangefinder. The XL50 retains a more magnified 2.5x starting view and 1,000m ranging.

Specifications

Thermal sensor

• Type: uncooled.
• Resolution: 1024×768 pixels.
• Pixel pitch: 12µm.
• Sensor NETD: < 40mK.
• System NETD: < 20mK.
• Frame rate: 50Hz.

Optics

• Objective lens: 50mm f/1.0.
• Continuous digital zoom, x: 2.5-20.
• Digital zoom: x1/x2/x4/x8.
• Minimum focusing distance: 5m.
• Eye relief: 15mm.
• Exit pupil diameter: 3.5mm.
• Horizontal field of view: 14°; 24.6m at 100m.
• Dioptre adjustment: -5/+4.
• Range of detection (deer type object), m/y: 2300 / 2515.

Display

• Type: AMOLED.
• Resolution: 1024×768 pixels.

Power, construction and dimensions

• Operating voltage: 3.7V.
• Battery type / Capacity / Output voltage: Li-Ion Battery Pack APS3 / 3200 mAh / DC 3.7 V (removable) Li-Ion Battery Pack / 4000 mAh / DC 3.7 V (built-in).
• External power supply: 5V.
• Protection rating: IPX7.
• Operating temperature: -25 … +50°C.
• Dimensions: 197 × 140 × 72mm.

Recording

• Photo and video resolution: 1024×768 pixels.
• File formats: .mp4 / .jpg.
• Internal storage: 64 GB.
• USB video streaming: Supported with current firmware.

Wireless connectivity

• Wi-Fi frequency: 2.4GHz and 5GHz.
• Standard: IEEE 802.11 b/g/n/ac.

Laser rangefinder

• Wavelength: 905nm.
• Maximum ranging distance: 1000m.
• Stated rangefinder accuracy: ±1m.

Included in the box

• Pulsar Merger LRF XL50 thermal imaging binoculars
• ?PS3 Battery Pack (Merger LRF XQ35/XP35/XP50/XL50 – 1 pc., Merger LRF XT50 – 2 pcs.)
• APS battery charger
• Power adaptor
• USB Type-C cable with USB Type-A adaptor
• Carrying case
• Neck strap
• Quick-Start guide
• Lens cloth
• Warranty card
• Tripod adaptor