Guide TU635LS Thermal Scope with LRF With Quick Release Scope Mount

The Guide TU635LS Thermal Scope with LRF combines high-resolution thermal imaging, integrated laser rangefinding and long-range detection in a rugged optic built for demanding field use.

Featuring a 640×512 12μm thermal sensor with 15mK NETD thermal sensitivity, the TU635LS delivers detailed thermal imagery and strong target definition across challenging conditions. Its 35mm objective lens provides a detection range of up to 1800 metres, while the integrated 1200m in-lens laser rangefinder delivers fast and accurate distance measurement directly through the scope.

Guide's ApexVision S1 image processing architecture and Hyper-Light algorithm work together to improve image clarity, contrast and fine detail, while Shutterless 3.0 technology helps provide smoother thermal viewing with minimal interruption.

A large 1.03-inch 2560×2560 AMOLED display, 2.6×–20.8× magnification, up to 14 hours of battery operation, Wi-Fi connectivity and IP68 protection complete a highly capable thermal optic designed for users who want high-resolution performance and integrated ranging in one platform.

Includes quick-release scope mount.

ApexVision S1 Image Processing

The TU635LS features Guide's ApexVision S1 image processing architecture, developed to enhance thermal image clarity, detail and overall viewing performance.

Advanced processing works alongside the high-resolution 640×512 detector to improve image definition and contrast while reducing unwanted noise.

This combination is particularly valuable during longer-range observation, where retaining greater detail around heat signatures and surrounding terrain can make a significant difference.

High-Resolution 640×512 12μm Thermal Sensor

At the heart of the Guide TU635LS is a 640×512 thermal detector with a 12μm pixel pitch.

The higher-resolution sensor provides increased image detail compared with lower-resolution thermal systems, helping users distinguish subjects and surrounding terrain with greater definition.

Combined with 15mK NETD thermal sensitivity, the TU635LS can detect subtle temperature differences within a scene, helping maintain useful image quality in challenging weather and low thermal-contrast conditions.

A 50Hz frame rate provides smooth thermal imagery while scanning or observing moving subjects.

35mm Lens & 1800m Detection Range

The TU635LS features a 35mm objective lens, providing a strong balance between field of view, magnification and longer-range observation.

Paired with the 640×512 thermal detector, the optical system provides a stated detection range of up to 1800 metres.

This makes the TU635LS well suited to users who want longer-range capability without sacrificing too much field of view for scanning and observation.

2.6×–20.8× Magnification

The Guide TU635LS provides 2.6× base magnification, offering a relatively broad initial viewing area for locating and observing heat signatures.

Magnification extends up to 20.8×, providing substantial flexibility when closer examination of distant subjects is required.

The combination of a high-resolution 640×512 sensor and lower base magnification makes the TU635LS a versatile option for users who want both scanning capability and detailed observation.

Integrated 1200m In-Lens Laser Rangefinder

A standout feature of the TU635LS is its 1200m laser rangefinder integrated directly into the objective lens assembly.

Positioning the LRF close to the optical axis helps minimise parallax between the ranging system and viewed image while maintaining a compact, streamlined design.

The integrated rangefinder allows users to observe a thermal signature and determine its distance through the same device, removing the need to switch to a separate handheld rangefinder.

Wide Field of View

The TU635LS provides a field of view of approximately 12.5° × 10.0°, or 22 × 18 metres at 100 metres.

This relatively wide viewing area is particularly useful when scanning larger sections of terrain, helping users locate heat signatures without constantly repositioning the optic.

Combined with magnification extending to 20.8×, the scope provides flexibility for both wide-area scanning and more detailed observation.

1.03" 2560×2560 AMOLED Display

The Guide TU635LS features a large 1.03-inch AMOLED display with 2560×2560 resolution, providing a highly detailed and immersive viewing experience.

The high-resolution display complements the 640×512 thermal detector and ApexVision processing system, helping present fine image detail clearly during both short and extended observation sessions.

Available thermal palettes include White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot and Sepia.

A -5 to +5 diopter adjustment allows the viewing system to be fine-tuned for individual eyesight requirements.

Hyper-Light Image Processing

Guide's Hyper-Light algorithm works alongside ApexVision S1 to enhance contrast, reduce image noise and improve finer thermal detail.

The processing system is designed to provide a clearer and more defined image, particularly in conditions where thermal contrast is reduced.

Shutterless 3.0 Technology

The TU635LS incorporates Guide Shutterless 3.0 technology, designed to minimise image freezing and audible clicking associated with conventional thermal calibration cycles.

This provides smoother and more continuous thermal viewing during normal operation.

A shutter module is retained for startup calibration and operation under extreme temperature conditions to help maintain optimal image quality.

Dual-Battery System

The TU635LS uses a multi-battery configuration consisting of two built-in 18650 batteries and one external replaceable 18650 battery.

Together, the system provides up to 14 hours of operating time, making the scope well suited to extended field sessions.

The external battery can be replaced when required, while USB-C charging and USB 2.0 connectivity provide convenient power and data access.

Video, Audio & Wi-Fi Connectivity

The Guide TU635LS supports video and audio recording, allowing thermal observations to be captured directly through the scope.

Built-in Wi-Fi connectivity provides wireless access to compatible external devices for supported viewing, sharing and device functions.

IP68 Weather Protection

With an IP68 protection rating, the TU635LS is designed for use in demanding outdoor environments where exposure to dust, water and changing weather conditions may occur.

Its specified operating temperature range of -20°C to 50°C provides reliable performance across a broad range of climates.

Quick-Release Scope Mount Included

The Guide TU635LS includes a quick-release scope mount, providing a convenient mounting solution straight out of the box.

Quick-release mount scope tube torque: less than 2.5N·m / 22.13 in-lb.

Guide TU635LS Specifications

Why Choose the Guide TU635LS?

The Guide TU635LS Thermal Scope with LRF is designed for users who want high-resolution thermal imaging and integrated distance measurement in a single optic.

Its 640×512 12μm thermal sensor, 15mK NETD sensitivity, 35mm lens and 1800m detection range provide detailed thermal observation, while the built-in 1200m in-lens laser rangefinder adds accurate ranging without requiring a separate device.

The 2.6× base magnification and wide 22 × 18m field of view at 100 metres provide strong scanning capability, while magnification extending to 20.8× allows distant subjects to be examined more closely.

Combined with ApexVision S1 processing, Hyper-Light image enhancement, Shutterless 3.0 technology, a large 2560×2560 AMOLED display, up to 14 hours of battery runtime, Wi-Fi connectivity, recording functionality, IP68 protection and an included quick-release mount, the TU635LS provides a comprehensive high-resolution thermal platform.