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Imaging apparatus

An imaging device, image sensor technology, used in image communication, television, optics, etc.

Inactive Publication Date: 2008-07-02
SONY GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with this type of technology, the luminous flux received from the object is divided into the above two types of components by a beam splitter or a half mirror, causing a problem of darkening the image of the object viewed as a component through the viewfinder system

Method used

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Examples

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Effect test

no. 1 example

[0032]

[0033] 1 and 2 are views showing the external structure of the imaging apparatus 1 (1A) according to the first embodiment of the present invention. Specifically, FIG. 1 is a front view showing the external front structure of the imaging device 1, and FIG. 2 is a rear view showing the external back structure of the imaging device 1. The illustrated imaging device 1 is provided in the form of a single-lens reflex digital camera with interchangeable lenses.

[0034] As shown in FIG. 1, the imaging apparatus 1 has a camera body unit (camera body) 2. The interchangeable electronic imaging lens unit (interchangeable lens) 3 is detachably mounted on the camera body unit 2.

[0035] The imaging lens unit 3 is mainly configured with components such as a lens barrel 36 and a lens group 37 (see FIG. 3) housed in the lens barrel 36 together with an aperture. The lens group 37 (image acquisition optical system) includes a lens such as a focus lens adapted to move in the optical axis ...

no. 2 example

[0120] The second embodiment relates to an improvement over the first embodiment. The following description focuses on the differences from the first embodiment. FIG. 14 is an enlarged cross-sectional view showing the internal structure around the pentagonal mirror 65 of the imaging apparatus 1B according to the second embodiment.

[0121] As shown in FIG. 14, the imaging device 1B is different from the imaging device 1A in that the former uses a half mirror 73 instead of the beam splitter 71.

[0122] The half mirror 73 also provides the same function as the beam splitter 71. For example, it includes a function of changing the traveling direction of light traveling along the optical path PB during framing using EVF, and a function of an optical lens that allows traveling along the optical path PE during framing using OVF.

[0123] This type of structure can also obtain the same effect as the first embodiment.

no. 3 example

[0125] The third embodiment involves a different improvement to the first embodiment. The following description focuses on the differences from the first embodiment. 15 is an enlarged cross-sectional view showing the internal structure around the pentagonal mirror 65 of the imaging apparatus 1C according to the third embodiment.

[0126] As shown in FIG. 15, speaking of the main point, the structure adopted by the imaging device 1C appears to approximately reverse the positional relationship between the image sensor 7 and the photometric sensor 79 with respect to the imaging device 1A.

[0127] Specifically, the imaging lens 67 and the image sensor 7 are provided on the optical path PB, and more specifically, on the optical path (transmitted optical path) PB generated by the transmission through the beam splitter 71 3. The imaging lens 72 and the photometric sensor 79 are provided on the optical path PE, more specifically, on the optical path PE3 generated by the beam splitter 71 ...

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PUM

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Abstract

The present invention provides an imaging device, which has: a viewfinder optical system; a first image sensor; a photometric sensor; and an optical path changing device. The viewfinder optical system has a first reflective surface that reflects the light flux for observation, and the first reflective surface changes a reflection angle of the light flux for observation. The change of the reflection angle of the first reflection surface switches the route of the light flux for observation between the first light path and the second light path. In the case of the second optical path, the direction of travel is changed by the optical path changing device placed on the second optical path, so that photometry processing is performed with the first image sensor, and in the case of the first optical path, photometry is performed with the photometric sensor deal with.

Description

Technical field [0001] The present invention relates to an imaging device such as a digital camera. Background technique [0002] For single-lens reflex cameras, there are technologies with real-time viewing capabilities. The real-time viewing function is suitable for displaying time-series images related to the object on a liquid crystal display unit, etc. Thus, in other words, the object image is displayed on the liquid crystal display unit or the like in a display manner in the form of a moving image. [0003] In Japanese Patent Application Publication (KOKAI) No. 2000-13663 (Patent Document 1) and Japanese Patent Application Publication (KOKAI) No. 2006-11025 (Patent Document 2), for example, a method suitable for The beam splitter or half mirror is placed in the optical path of the viewfinder optical system, by dividing the light flux received from the object into one component traveling toward the image sensor and another component traveling toward the viewfinder window, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225G03B13/06
CPCG03B19/12H04N23/00
Inventor 柳生玄太辻村一郎
Owner SONY GRP CORP
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