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Camera system and method for observing objects at great distances, in particular for monitoring target objects at night, in mist, dust or rain

A technology of objects and cameras, which is applied in closed-circuit television systems, components of television systems, radio wave measurement systems, etc., can solve problems such as slow target recognition, and achieve the effect of suppressing interference light

Inactive Publication Date: 2013-12-25
伊德斯德国股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A disadvantage of these known methods is that the recognition of objects occurs very slowly and only in good visibility and lighting conditions

Method used

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  • Camera system and method for observing objects at great distances, in particular for monitoring target objects at night, in mist, dust or rain
  • Camera system and method for observing objects at great distances, in particular for monitoring target objects at night, in mist, dust or rain
  • Camera system and method for observing objects at great distances, in particular for monitoring target objects at night, in mist, dust or rain

Examples

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Embodiment Construction

[0067] figure 1 An embodiment of a multispectral surveillance camera with its own artificial lighting is shown.

[0068] A well-lit target object 1 at a long distance (10km to 40km) travels along the line of sight 3 of the telescopes 4, 5 and 6 and is detected by a CCD camera 22 for near infrared (sensitive to 0.8 μm to 1.7 μm, size 9.6 mm x 7.7 mm, with a pixel size of 30 μm and an image size of 320 columns x 250 rows) to generate a real image 2 of the target object 1 on an InGaAs CCD chip.

[0069] Telescopes 4, 5, 6 consist of a gold-plated elliptical primary mirror ("primary mirror") with a diameter of 32 cm (12.5 in) and a focal length of 2.54 m 4, a gold-plated spherical secondary mirror ("capture mirror") 5 and a special Barlow lens 6 (here a "Fa. Baader") that adjustably magnifies the focal length of the primary mirror 4 from 4 to 9x (up to 22.86m) and here produces a fully color-corrected flat infrared image over the entire focal range.

[0070] The light path of t...

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Abstract

The invention relates to a camera system and a method for observing objects at great distances, in particular for monitoring target objects (1) at night, in mist, dust or rain from an observation distance of for example 30 to 40 km. The camera system optionally comprises a pivotable target tracking mirror (14), a concave primary mirror (4) comprising a long focal length and a convex secondary mirror (5), said mirrors forming together a mirror telescope (4, 5, 6), optionally a Barlow lens system (6), an IR-sensitive image sensor (22) located on the image plane (2) of the mirror telescope, a controllable high-speed shutter system (23) for the image sensor (22), controllable IR-illumination means (11) for illuminating the object (1) to be observed by IR-illumination pulses (12) of several different colours, and a control device (ST); for the co-ordinated control of the IR-illumination means (11) and the high-speed shutter system (23), in order to record multi-spectral images by means of the image sensor (22), said images being captured according to gated view technology.

Description

technical field [0001] The present invention relates to a camera system and a method for observing objects at a distance, especially for monitoring target objects at night, in smoke, dust or rain. "Long distance" here means any distance greater than 5 km. Background technique [0002] For example, in the field of military reconnaissance, multispectral sensors are used to detect scenes, especially in terrain, which should be checked for the presence of equipment, personnel, vehicles, infrastructure features and the like. For this purpose, multispectral surveillance cameras provide a large number of images, which are to be evaluated under predetermined time conditions. The object to be recognized has any size and can have structures characterizing the object, which are of greater or lesser complexity. With known systems, ground detection, ground detection and continuous ground surveillance of people, pack animals and vehicle objects are possible over large areas in the air (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B15/00G03B15/03G01S7/481G02B13/14G02B17/08H04N5/33G01S7/487G01C11/02F41G1/36
CPCF41G1/36G02B13/14G02B17/0808G02B17/0852G02B19/0085G02B27/644G03B15/006G03B15/03H04N23/11H04N7/18
Inventor M.希伊布H.W.庞格拉茨
Owner 伊德斯德国股份有限公司