M12 Optical Lens for NeoEyes NE301

Overview

This product is an optical lens only. It screws into the M12 lens holder on a compatible NeoEyes NE301 camera module. It does not contain an image sensor or any imaging electronics and cannot capture images by itself.

The three lens options let you change the framing of an NE301 camera module without replacing its sensor board. Choose the 2.5mm lens for broad scene coverage, the 3mm lens for general monitoring, or the 6mm lens for a narrower view of more distant or smaller targets.

Lens choice affects how many pixels the target occupies in the image. A wider lens captures more of the scene but makes each object appear smaller. A narrower lens shows less of the scene and places more pixels on the target. Select the lens from the target size and camera-to-target distance, then adjust focus after installation.

The lenses use an M12 x 0.5 thread and are designed for the lens holder used by the NE301 camera module. The optical design supports sensors up to 1/2.7 inch, which covers the sensor formats used by the NE301 camera options. Field of view values in this listing are measured with a 1/2.7-inch sensor and can vary with sensor size and mechanical integration.

Choose the Right Lens

Selection Guide

• Need maximum scene coverage or situational awareness? → Choose 2.5 mm
• General-purpose monitoring or doorbell applications? → Choose 3.0 mm
• Need reliable face or detail capture at mid-range distances? → Choose 6.0 mm

Note: All specifications are based on 1/2.7″ sensor configuration. Actual field of view may vary depending on sensor size and system integration.

Key Features

Three fields of view for different target sizes

• The 2.5mm lens provides the widest view in the range.
• The 3mm option balances coverage and image scale.
• The 6mm lens narrows the frame so a target occupies more of the image at the same camera position.

M12 x 0.5 mounting thread

The standard thread fits the lens holder used by the NE301 camera module. This makes lens changes practical during prototyping, field-of-view testing, or final installation.

Manual focus adjustment

Rotate the lens in the holder to set focus for the actual working distance. Check sharpness with the camera in its final mounting position before securing the lens. The focus distances quoted for complete NE301 configurations are reference settings, not autofocus ranges.

Optical designs matched to each view

The 2.5mm and 3mm options use glass-plastic hybrid optical structures to balance size and performance. The 6mm version uses four glass elements and has the largest aperture in the range at F2.2.

Manual Focus Adjustment

Focus can be fine-tuned by rotating the lens, simplifying calibration during installation and system setup.

Important Compatibility Notice

• This listing is for replacement or alternative lenses used with the CamThink NeoEyes NE301 camera module.
• This is a lens-only accessory. It does not include an image sensor, sensor board, PCB, cable, or complete camera module.
• Confirm that your camera has an M12 x 0.5 lens holder before ordering for any non-NE301 system.
• Field of view changes with sensor size. The listed optical FOV values are based on a 1/2.7-inch sensor configuration.
• These are manually focused lenses. Installation requires image preview and focus adjustment.
• A lens changes framing and image scale, but recognition performance still depends on sensor resolution, focus, lighting, target distance, and the AI model.

What’s Included

• 1 x selected M12 mount lens: 2.5mm, 3mm, or 6mm