Sara Verbruggen

Freelance journalist

Author Bio ▼

Experienced freelance B2B journalist and editor, specialising in fields of renewable energy, energy storage, smart grids and nanotech.
October 4, 2017

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Want a Future-Proof Cyber Security Strategy? Look at Physical Security Now

Theia lenses approved for Dahua 4K box camera

Theia’s lenses are designed to meet needs of a new range of 4K analytics-rich cameras and ensure true 4K resolution systems.

Video surveillance specialist Dahua has qualified the Theia 4K lens family for use with its IPC-HF81230E Ultra HD Box Camera. The combination provides video surveillance professionals with one of the most advanced imaging technologies available. Theia’s 4K lenses offer resolution performance that matches the image quality 4K sensor cameras promise, but aren’t always able to provide due to inferior lens selection.

Theia’s lenses resolve the 1.55 micron-sized pixel of the 1/2.3”4K sensors, while covering the larger 1/1.7”4K imagers.

Verticals/sectors which they are suitable for include shopping centres, stadiums and open public spaces. They can be used for any application where a high level of detail and precision is needed for analytics-rich applications. This includes facial recognition and behavioural studies, especially in environments where there is lots of activity or total area coverage is needed.

Theia lens, Dahua camera

Dahua IPC-HF81230E 12MP Box Network Camera

Features

The varifocal lens family covers a horizontal field of view from 112 to 9 degrees, with the SL410 4-10mm lens and SL1250 12-50mm lens.

Theia lenses maintain 4K resolution in day and night with 5 microns focus shift in near infrared light. They are 52mm and more compact than the comparable 1/1.7”4K lenses, allowing use in smaller enclosures and some domes.

At F/1.4 the SL410 has the fastest F number and the best light gathering ability of any 4k 1/1.7” format varifocal lens available in the surveillance market.
The CS mount lenses are available in manual, DC-auto or P-iris versions; fully motorized, board and C mount versions are also available.
Dahua says: “When paired with Theia’s 4K lenses, Dahua’s IPC-HF81230E Ultra HD Box Camera is able to deliver very high image quality to the market enabling analytics and other high detail applications,” says Daniel Chau, overseas marketing director.

About Theia

Theia Technologies provides high quality 4K and megapixel lenses for security and machine vision applications. Theia lenses are designed and marketed from the US, and manufactured to ISO 9001 standards. The company also provides optical engineering and custom design services.

About Dahua Technology

Zhejiang Dahua Technology is a leading provider in the global video surveillance industry. Dahua is committed to providing the highest quality solutions and products with the latest technologies to enable end users to perform their business successfully.

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