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Multispectral image capture device comprising a filter wheel

A multi-spectral image and acquisition equipment technology, applied in the field of collecting multi-spectral images, can solve problems such as large vibrations

Active Publication Date: 2016-11-09
AIRBUS DEFENCE & SPACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using a faster and therefore more powerful drive system results in greater vibrations, which creates its own problems;

Method used

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  • Multispectral image capture device comprising a filter wheel
  • Multispectral image capture device comprising a filter wheel
  • Multispectral image capture device comprising a filter wheel

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Embodiment Construction

[0066] For clarity, the dimensions of elements shown in the drawings do not correspond to actual dimensions, nor do they correspond to the relationship between actual dimensions. In addition, the same reference numerals shown in the respective drawings designate the same elements or elements having the same functions.

[0067] exist figure 1 In the shown multi-spectral image acquisition device 10, it can be used Figure 3a to Figure 3c One of the rounds in place of figure 2 filter wheel in order to apply the present invention.

[0068] It can be understood that although the objective lens 1 and the secondary imaging system 2 are respectively shown in the form of a single lens, they can be based on one or more lenses, one or more mirrors, or possibly a combination of at least one lens and at least one mirror. constituted in any way.

[0069] For example, Figure 3a Wheel 4 in the figure 1 in the device. It comprises a plurality of filters referenced 41...46..., said fil...

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Abstract

The invention relates to a multispectral image capture device comprising a filter wheel (4) and an image sensor. The filters (41-46) are located close to a focusing plane of a light beam used to form the images, and at least one of the filters is more angularly narrow than the optical field of the image sensor. The production of the filter is thereby facilitated. Advantageously, the filters are closer to one another in the wheel such that multiple filters are in the optical field of the sensor simultaneously. Each multispectral image can be captured more quickly than when each filter covers the entire optical field of the sensor.

Description

technical field [0001] The invention relates to a multispectral image acquisition device comprising a filter wheel, and a method for acquiring multispectral images. Background technique [0002] Various methods exist for acquiring multispectral images using a single image acquisition device. One such method involves the use of multiple spectral filters, interleaved alternately along the path of the light beam used to form the acquired image. Such multispectral image acquisition equipment typically includes: [0003] - imaging optics, suitable for forming an image in the focal plane; [0004] - at least one two-dimensional image sensor comprising a photosensitive surface defined by a peripheral contour and located in a focal plane; [0005] - a filter wheel comprising a plurality of spectral filters with no overlap between two adjacent filters; and [0006] - a drive system arranged to rotate the wheel about the axis of rotation to bring each filter into the light beam. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/07H04N23/12H04N23/16
CPCH04N23/12H04N23/80H04N23/16H04N23/73G02B7/006H04N7/183
Inventor 皮埃尔-卢克·盖奥吉
Owner AIRBUS DEFENCE & SPACE