Theia Technologies, the IP video surveillance lens specialist, announces that Dahua has
qualified Theia’s 4K lens family for use on their IPC-HF81230E Ultra HD Box Camera.
Theia’s 4K lenses offer resolution performance matching the image quality 4K sensor
cameras promise, but don’t necessarily deliver 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.
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. The lenses maintain 4K resolution in
Day and Night with <5 microns focus shift in NIR light. The 52mm lenses are more
compact than comparable 1/1.7”4K lenses, allowing use in smaller enclosures and some
At F/1.4 the SL410 boasts the fastest F number and likely the best light gathering ability
of any 4k 1/1.7” format varifocal lens in the surveillance market today.
The CS mount lenses are available in manual, DC-auto or P-iris versions; fully
motorized, board and C mount versions are also available.
“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 Mr. Daniel Chau, Dahua Overseas Marketing Director. “When
combined with Dahua’s recording solution, these 4K cameras provide video surveillance
professionals with probably the most advanced imaging technology available.”
As Mark Peterson, VP Advanced Technology, at Theia Technologies, explained, “We are
excited to cooperate with Dahua. The emergence of 4K resolution in video surveillance
will empower analytics-rich applications such as facial recognition, behavioral studies
and ANPR, where a high level of detail and precision is required. The technology is also
an obvious choice for situations in which there is a lot of activity or large areas where
there are limited options for placing cameras yet the entire area needs covering such as
in shopping centers, stadiums or open public spaces.”