Computar E24Z1018 zoom lenses

The CBC Group company announced in the summer of 2014 an exit of a new series of motorized E24Z1018 optics of the Computar brand which includes four models having the range of focal distances of 10-240 mm and focal number F1.8. New zoom lenses are expected collaboration with IP cameras with the resolution up to 3 MP, provide the high level of detailing of the image and maintain presets of focusing and extent of scaling. At the same time the autodiaphragm of the E24Z1018AMSP-MP/MPIR models is controlled video signal, and E24Z1018PDC-MP/MPIR — a direct current. Besides, each zoom lens having an abbreviation "-MPIR", we will combine with "day/night" cameras as their lenses are corrected in a near Infrared range.

Control of a diaphragm in E24Z1018 is exercised automatically, and as management zoom lenses are divided into two groups. So, for adjustment of disclosure of a diaphragm of E24Z1018AMSP-MP and E24Z1018AMSP-MPIR use Video Drive technology which is based on the analysis of video signal from the surveillance camera, and the E24Z1018PDC-MP and E24Z1018PDC-MPIR models have the diaphragm managed by a direct current signal therefore it is possible to equip with them cameras with support of DC Iris. Irrespective of type of management of a diaphragm each zoom lens provides the optimal illumination of a matrix of the camera and fast adaptation under the changing light conditions.

High resolution capability of Computar optics of E24Z1018 series allows to use them with video surveillance IP cameras with the resolution up to 3 megapixels which format of a matrix makes 1/1.8, 1/3 or 1/4 inches. For installation on cameras zoom lenses have fastening with the S-type thread, and the C/CS-adapter is necessary for their use with the cameras having fastening of CS. At the same time such parameters as optical increase, focusing and depth of field are configured independently of each other using servo actuators. Besides, each zoom lens of E24Z1018 series provides use of light filters with a thread of M 77x1 mm depending on illumination conditions on an object, and is compatible to the brackets having type of fastening 1/4" - 20UNC.

Zoom lenses of E24Z1018AMSP-MPIR and E24Z1018PDC-MPIR are intended for work with the day/night IP cameras. The lenses used in them are corrected with the infrared range therefore upon transition of the camera between operation modes "day/night" they do not allow a defocusing and a smearing effect. This optics can also be applied when using IK-searchlights and implementation of video surveillance in the conditions of the lowered illumination or in complete darkness. Thanks to it, each zoom lens with IK-correction can be set together with the camera in a thermocasing and be applied to street video filming.

Automatic transition to presets in all new Computar devices is performed using the potentiometers allowing to appoint the preset values of focus and an optical zoom (multiplicity). Preset values of positions of a zoom and focus transfer zoom lenses to the telemetry receiver which stores them in the memory. At activation of presets, on a zoom lens tension from the receiver moves until resistance of potentiometers do not match the saved values corresponding to the necessary focal distance and coefficient of approach.