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Imaging device, imaging system, non-transitory storage medium, and control method

A technology of camera device and camera element, which is applied in the parts of TV system, image communication, TV, etc., and can solve problems such as overexposure, difficulty in obtaining subject images, and underexposure

Active Publication Date: 2020-10-27
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in Japanese Patent Laid-Open No. 2013-247492, since the dynamic range is narrow, overexposure and underexposure may occur
On the other hand, since Japanese Patent Laid-Open No. 2000-138868 describes a countermeasure against such a problem, but does not include an image pickup element having sensitivity to infrared light, it is difficult to acquire a subject image at low illuminance

Method used

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  • Imaging device, imaging system, non-transitory storage medium, and control method
  • Imaging device, imaging system, non-transitory storage medium, and control method
  • Imaging device, imaging system, non-transitory storage medium, and control method

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no. 1 example

[0025] figure 1 The imaging device in the first embodiment is shown. figure 1 is a schematic diagram showing the configuration of the imaging device 100 according to the first embodiment. The imaging device 100 includes an imaging optical system 101 , a light separation unit 102 , a first imaging element 103 , a second imaging element 104 , a synthesis processor 105 , and a controller 106 .

[0026] The light splitting unit 102 splits the light passing through the imaging optical system 101 so that the light is incident on the first imaging element 103 and the second imaging element 104 . Specifically, the light separation unit 102 is composed of a wavelength selection prism, and is configured such that light (visible light) having a wavelength shorter than a wavelength of a predetermined threshold transmits light having a wavelength longer than a wavelength of a predetermined threshold through the wavelength selection prism. (infrared light) is reflected by the wavelength s...

no. 2 example

[0056] The difference between the imaging device 200 in the second embodiment and the imaging device 100 shown in the first embodiment is that the imaging device 200 includes an infrared illuminating unit 210 that irradiates infrared light. Figure 6is a schematic diagram showing the configuration of the imaging device 200 according to the second embodiment. The imaging device 200 includes an imaging optical system 101 , a light separation unit 102 , a first imaging element 103 , a second imaging element 104 , a synthesis processor 105 , a controller 106 and an infrared illumination unit 210 . The infrared illumination unit 210 is a light source configured to irradiate infrared light, and is, for example, a light emitting diode (LED) made of a compound semiconductor such as AlGaAs. Image quality in a low-light environment can be improved by irradiating infrared light using the infrared illumination unit 210 .

[0057] Furthermore, in the image pickup device 100 of the first e...

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Abstract

The invention relates to an imaging device, an imaging system, a non-transitory storage medium, and a control method. The imaging device is capable of increasing a dynamic range of an image while minimizing a decrease in image quality when capturing is performed under low illuminance. The imaging device includes a first imaging element (103) having sensitivity to visible light and configured to output a first image signal (107); a second imaging element (104) having sensitivity to infrared light and configured to output a second image signal (108A) and a third image signal (108B) acquired under an exposure condition different from that of the second image signal (108A) at a second frame rate higher than a first frame rate of the first imaging element (103); and a combination processor configured to generate a combination including the first image signal (107) output from the first imaging element (103) and the second image signal (108A) and the third image signal (108B) output from thesecond imaging element (104) and generate a fourth image signal (109).

Description

technical field [0001] The invention relates to an imaging device and a control method thereof. Background technique [0002] In an imaging device used for surveillance or the like, it is necessary to acquire a clear subject image even under low illuminance such as at night. As an imaging device capable of acquiring a clear subject image even under low illuminance, there has been proposed an imaging device including an imaging element having sensitivity to visible light and an imaging element having sensitivity to infrared light. Sensitivity of the image pickup elements, and the images acquired using the two image pickup elements are synthesized and the composite image is displayed. [0003] Japanese Patent Laid-Open No. 2013-247492 describes: changing synthesis parameters for synthesizing the visible image and the far-infrared image according to the detection result for the surrounding environment, using the changed parameters to synthesize the visible image and the far-in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/232H04N5/235H04N5/265
CPCH04N5/265H04N23/54H04N23/55H04N23/741H04N23/20H04N23/951H04N23/45H04N23/50H04N23/60H04N23/73H04N23/56H04N23/71H04N23/74H04N23/633
Inventor 沼田爱彦
Owner CANON KK