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Night vision system for motor vehicles, comprising a partial optical filter

An optical filter and motor vehicle technology, which is applied in the field of night vision systems, can solve the problems of non-correctable imagers and high cost of color cameras, and achieve the effect of improving quality

Inactive Publication Date: 2007-01-24
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Imager overshoot is no longer correctable by software-supported post-processing due to restricted luminance dynamics
Furthermore, wavelength-dependent attenuation in the near region is not possible with grayscale cameras and expensive with color cameras by means of software algorithms.

Method used

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  • Night vision system for motor vehicles, comprising a partial optical filter
  • Night vision system for motor vehicles, comprising a partial optical filter
  • Night vision system for motor vehicles, comprising a partial optical filter

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Embodiment Construction

[0025] In the figures, the same reference numerals denote identical or functionally identical components.

[0026] figure 1 A block diagram of an embodiment of a night vision system 1 for a motor vehicle according to the invention is shown. The night vision system 1 has a control unit 3 which is connected to the other components of the system, controls them and processes the signals and data of these components.

[0027]After activation of the night vision system via an operating unit 13 , the control unit 3 switches on the NIR high-beam headlights 5 . These headlights 5 illuminate a similar spatial region in front of the motor vehicle in the NIR wavelength range (780 to approximately 1100 nm) as in the case of conventional high beams. The effective distance is about 250 meters.

[0028] A camera 7, also sensitive to the NIR region, with a CCD image sensor or a CMOS image sensor (respectively with a linear or nonlinear intensity characteristic curve) and a depth of field ra...

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Abstract

The invention relates to a night vision system for motor vehicles, comprising a camera (7) that is provided with a radiation-sensitive image sensor surface (11) and is equipped for detecting electromagnetic radiation especially in the infrared range. In order to improve such a system regarding visibility beyond the range of the dimmed headlights, said night vision system encompasses a filter element (9) that is disposed in the beam path of the night vision system so as to attenuate the detected radiation onto predetermined subareas (24) of the image sensor (11), thus making it possible to attenuate the radiation, which would otherwise be too intense, in the range of the dimmed headlights (20).

Description

technical field [0001] The invention relates to a night vision system for a motor vehicle, comprising a camera (Kamera) having a radiation-sensitive image sensor area, which is arranged to acquire images, especially from the near-infrared region electromagnetic radiation. Background technique [0002] This is primarily a night vision system that improves the driver's field of vision without switching on conventional high beams. [0003] Systems for night vision assistance are increasingly being installed in motor vehicles. The goal of night vision systems is to improve the driver's field of vision beyond the low beam area at night by using cameras and displays or projections on the windshield. Oncoming vehicles should not be blinded here, as can be the case when conventional high beams are used, which also have light in the visible range. Night Vision Assist is achieved by using and capturing wavelength ranges that are invisible to the human eye. These wavelength ranges ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B23/12G02B5/20H04N5/33B60R1/00G01S17/93G01S7/481G01S17/89G01S17/931G02B13/14
CPCG02B5/208G01S7/4813G01S17/936G01S17/89B60R2300/804B60R2300/8053B60R1/00H04N5/33B60R2300/106B60R2300/205G02B13/14G01S17/931
Inventor 卡斯滕·豪格
Owner ROBERT BOSCH GMBH
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