Alpen Optics Apex Thermal 35

• 384x288 thermal sensor with 17 mK sensitivity: The sensor picks up small temperature differences, helping the monocular separate animals, people, and background detail more clearly when contrast is low.
• 35 mm objective with 1300 m detection range: This combination gives the Alpen Optics Apex Thermal 35 enough reach for scanning open ground while still remaining compact enough for handheld use.
• 1280x960 AMOLED display: The high-resolution AMOLED screen presents a crisp, high-contrast image that is easier to interpret during extended observation, especially in darkness.
• WiFi, photo, and video recording: Built-in connectivity and recording let users document sightings, review observations later, and share the live view through the app when needed.
• Nitrogen-filled, waterproof and fogproof housing: The sealed construction helps the device stay dependable in rain, humidity, and changing temperatures where ordinary optics can struggle.

About the Alpen Optics Apex Thermal Series

The Alpen Optics Apex Thermal series is a family of handheld thermal-imaging monoculars built for users who need reliable observation in conditions where conventional optics lose effectiveness. The series is intended for hunting, wildlife viewing, fishing, camping, security, and search and rescue, so the design focuses on fast heat-signature detection, simple handling, and practical field features rather than bulk. A key characteristic of the range is its ability to reveal targets in darkness, rain, and fog, making it useful whenever visibility is limited by light or weather rather than distance alone.

Across the series, Alpen Optics combines thermal imaging with features that support real field use, including Clear+ image processing for improved edge definition and detail, Wi-Fi connectivity, and built-in photo and video recording. The line also includes functions such as picture-in-picture and a heat-detection mode, which help users monitor a wider scene while still checking target detail. Within the series, different objective-lens sizes suit different priorities, from compact carry to longer-distance detection, while the handheld monocular format keeps the devices quick to deploy for scanning and observation.

About the Alpen Optics Apex Thermal 35

The Alpen Optics Apex Thermal 35 is the mid-size handheld model in the series, built around a 35 mm objective lens and a 384x288 thermal sensor. That configuration gives it a useful balance between field portability and observation reach. With a 1300 m detection range, it is well suited to scanning fields, woodland edges, tracks, and open ground where early heat detection matters more than daylight detail. The monocular uses 3.00 x magnification, which provides a more concentrated view than a true 1x scanner and helps the user identify heat sources more confidently at medium distances.

Image quality is supported by a 17.00 mK NETD rating and a 1280x960 AMOLED display. In practice, this means the device is better able to show subtle temperature separation and present it on a screen with strong contrast and clean detail, which reduces guesswork when observing animals or movement against cluttered backgrounds. Recording functions add practical value in the field: photo capture, video recording, and video output allow observations to be stored or reviewed, while WiFi connectivity supports app-based viewing and sharing.

Mechanically, the unit remains easy to carry at 185.00 mm in length and runs on the Alpen battery AAP-3500 for up to 6.00 h. The nitrogen-filled housing is both waterproof and fogproof, which helps maintain dependable performance in wet weather and during temperature changes. Because it does not rely on a built-in rangefinder or image stabilizer, the design stays focused on straightforward thermal observation with fewer distractions and a compact overall form.

About Alpen Optics

Alpen Optics was founded by Tim Gardner in December 1996, and the company introduced its first products in 1997. Its history identifies Rancho Cucamonga, California, as the company headquarters. Alpen Optics works across several sporting-optics categories, including binoculars, spotting scopes, riflescopes, and thermal optics, which places it as a broad optics brand rather than a single-category specialist.

The brand’s product history shows a consistent focus on practical field optics, with binocular lines such as Apex XP, Teton, and Rainier and technologies including BaK-4 prisms, PXA phase coating, HR metallic coatings, ED glass, and UBX multilayer coating in relevant models. In 2018, Explore Scientific acquired Alpen Optics’ trademarks and designs, linking the brand’s established optics identity with a broader product-development and distribution structure.

Main Features

• Product type: Thermal monocular
• Series: Alpen Optics Apex Thermal
• Magnification: 3.00 x
• Objective lens diameter: 35.00 mm
• Detection range: 1300.00 m
• Thermal sensor resolution: 384x288
• Thermal sensor pixel count: 0.11 MP
• NETD: 17.00 mK
• Display type: AMOLED
• Display resolution: 1280x960
• Display pixel count: 1.22 MP
• Image capture: Yes
• Video recording: Yes
• Video output: Yes
• Connectivity: Wifi
• Battery: Alpen battery AAP-3500
• Battery life: 6.00 h
• Length: 185.00 mm
• Width: 53.00 mm
• Height: 80.00 mm
• Housing fill: Nitrogen
• Waterproof: Yes
• Fogproof: Yes
• Built-in rangefinder: No
• Image stabilizer: No
• Color: Green

Warranty

5 years. Alpen Optics thermal devices are covered by a 5-year limited warranty from the original purchase date in the United States.

In the Box

• Bag with storage compartment made of extremely durable 900D sail fabric
• Hand strap
• Charger for APP-3500 battery pack
• 2 batteries