M12 2.5mm F2.4 Fisheye Lens

Name: M12 2.5mm F2.4 Fisheye Lens
Brand: Shanghai SILK Optical Technology
SKU: PL-WA02524C-M12

The M12 2.5mm F2.4 Fisheye Lens (PL-WA02524C-M12) is a 5G all-glass M12 board lens optimized for 1/2.9" GC2053 sensors. It provides a 150° diagonal field of view (128° horizontal) with a -22.5% TV distortion, keeping images relatively rectilinear compared to extreme fisheyes. The optical stack features five glass elements plus an IR-cut filter, an F2.4 fixed aperture, a 6.48mm image circle, a 16.87mm total track length (TTL), and a 4.6mm back focal length (BFL). With a CRA of less than 19.5° and 55.0% relative illumination, it ensures accurate color and bright corners for security, automotive, and IoT applications.

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Product Description

M12 2.5mm F2.4 Fisheye Lens

PL-WA02524C-M12 from Shanghai SILK Optical Technology is engineered for compact megapixel cameras that need wide coverage without extreme fisheye distortion. Tuned for the 1/2.9" GC2053 sensor, it delivers a 150° diagonal view with a remarkably low -22.5% distortion.

PL-WA02524C-M12 Specification

The following table details the core technical parameters, optical characteristics, and mechanical dimensions.

NO.	ITEM	CONTENT
1	TTL (Total Track Length)	16.87 ± 0.3 mm
2	EFL (Effective Focal Length)	2.5 ± 5% mm
3	F/NO (Aperture)	2.4 ± 5%
4	BFL (Back Focal Length)	4.6 mm
5	CONSTRUCTION	5G + IR
6	MAX IMAGE CIRCLE	Φ 6.48 mm
7	For Sensor	1/2.9" GC2053
8	Field of View (Diagonal)	150°
9	Field of View (Horizontal)	128°
10	Field of View (Vertical)	69°
11	TV Distortion	-22.5%
12	Relative Illumination	55.0%
13	CRA (Chief Ray Angle)	< 19.5°
14	Mount (Interface)	M12*P0.5

Mechanical Drawings

M12 2.5mm F2.4 Fisheye Lens Mechanical Drawing

Performance Advantages

Wide Field Without Extremes

For a security camera, the 128° horizontal view shows doorways and lanes a standard lens would miss, while keeping vertical framing sufficient for people and signage without heavy fisheye stretching.

Straighter, More Useful Images

The -22.5% distortion keeps perspective usable. Operators recognize faces, plates, and QR codes more easily, and the mild barrel pattern requires light or no dewarping software.

Brighter, Clearer Corners

The 55.0% relative illumination outranks many entry-level wide lenses. Wall edges and frame corners remain usable for monitoring and inspection instead of fading into dark bands.

All-Glass Thermal Stability

The five glass elements resist defocus and color drift across temperature swings. This makes the lens dependable for outdoor and industrial installations from freezing nights to heated cabinets.

Detailed Application Areas

Industry	Application Details
Security & Surveillance	Fits bullet, dome, and turret housings. The 150° diagonal coverage lets one camera monitor a whole room, corridor, or shop floor in a single view.
Smart Home & IoT	Indoor cameras see an entire room. The F2.4 aperture keeps exposure even, and the compact body suits vertical, ceiling-mounted, and battery-powered models.
Dashcams & Vehicles	Captures a wide forward view that reads plates and lanes. The all-glass construction resists dashboard heat through summer swings.
Robotics & Machine Vision	Provides coverage for docking, obstacle spotting, and mapping on AGVs. Clean geometry supports calibration on moving platforms.
Access Control & Kiosks	Facial recognition terminals and QR scanners get close-range face coverage. The low distortion keeps faces proportional for reliable matching.

ShangHai SILK Optical Technology CO., LTD supports OEM and ODM projects with flexible volume planning, sample evaluation, and production consistency. For inquiries, please contact our engineering team.