https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
Aheadex HB02811AHR Megapixel Lens

Aheadex HB02811AHR Megapixel Lens

Aheadex Electronic and Technology
Region: China
Update: 04/08/2011
Key Specifications
Features: 
● Imager size: 1/3” 
● Focal length: 2.8 to 11 mm 
● Aperture range: F1.4
● Back focus: 6.44 to 13.95 mm 
● Horizontal field: 92.6 to 24.8 degrees
https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions