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Optical filter, image sensor, imaging device and three-dimensional imaging system

An image sensor and three-dimensional imaging technology, applied in the field of three-dimensional imaging, can solve the problem of difficult alignment of infrared images and color images, and achieve the effects of convenient alignment, lower requirements and lower production costs

Active Publication Date: 2018-12-25
SHANGHAI TUYANG INFORMATION TECH CO LTD
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Problems solved by technology

The existence of shooting blind spots will also make it difficult to align the captured infrared images and color images

Method used

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  • Optical filter, image sensor, imaging device and three-dimensional imaging system
  • Optical filter, image sensor, imaging device and three-dimensional imaging system
  • Optical filter, image sensor, imaging device and three-dimensional imaging system

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Embodiment Construction

[0062]Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0063] The invention firstly discloses an optical filter, which can transmit visible light and infrared light in a specific frequency range.

[0064] Figure 2A A schematic block diagram of the structure of the optical filter according to the present invention is shown.

[0065] As shown in the figure, the filter 25 in the present invention includes a plurality of filter units 30 .

[0066] Figure 2B show Figure 2A Schematic block diag...

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Abstract

The invention discloses an optical filter used for an image sensor, an image sensor, an imaging device and a three-dimensional imaging system. The optical filter comprises a plurality of filter units for corresponding to a plurality of pixels of the image sensor respectively. Each filter unit comprises a visible light transmission unit used for transmitting visible light within a specific visible light frequency range. Each filter unit also comprises an infrared light transmission unit used for transmitting infrared light within a specific infrared light frequency range. According to the invention, the optical filter is used for the image sensor, so that depth information and color information of a to-be-detected object can be captured at the same visual angle at the same time; and compared with a method for obtaining depth information and color information through an infrared camera and a color camera, a method provided by the invention omits a procedure for aligning and calibrating image captured by two cameras, and a phenomenon that a detected infrared image and a detected color image cannot be aligned as a non-detection zone exists due to the parallax error of the two cameras is prevented.

Description

technical field [0001] The invention relates to the field of three-dimensional imaging, in particular to an optical filter, an image sensor, an imaging device and a three-dimensional imaging system. Background technique [0002] The traditional image capture method can only obtain the two-dimensional information of the object, but cannot obtain the spatial depth information of the object (also known as the depth of field information). It plays a vital role in life and entertainment applications. [0003] A depth camera is a collection device that collects depth information of a target object. This type of camera is widely used in 3D scanning, 3D modeling and other fields. In practical applications, in order to truly restore the three-dimensional data and surface texture of an object, it is often necessary to collect color texture information on the surface of the object while collecting depth information. [0004] When collecting depth information, in order to eliminate th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N13/239
Inventor 王敏捷梁雨时
Owner SHANGHAI TUYANG INFORMATION TECH CO LTD
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