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Endoscope apparatus

An endoscope and solid-state imaging element technology, which is applied to the field of endoscope devices, can solve the problems of too dark fluorescence images, difficulty in obtaining a composite image of a fluorescence image and a reflected light image, and difficulty in obtaining a composite image, thereby reducing the F value. Effect

Inactive Publication Date: 2005-02-02
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In addition, since the intensity ratio varies from place to place, if the sensitivity of the CCD is set so that the screen average of the fluorescence image becomes a predetermined value, the fluorescence intensity will be very weak relative to the reflected light intensity, so the reflected light will be saturated, making it difficult to Get a proper composite of the fluorescence image and the reflected light image
In addition, if the sensitivity of the CCD is set so that the screen average of the reflected light image becomes a predetermined value, the reflected light intensity is very large relative to the fluorescence intensity, so the fluorescence image is too dark. In this case, it is difficult to obtain an appropriate composite image.

Method used

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Embodiment approach 1

[0045] Refer to Figure 1 to Figure 11B Embodiment 1 of the present invention will be described.

[0046] structure

[0047] First, the structure of this embodiment will be described.

[0048] As shown in FIG. 1 , an endoscope apparatus 1 according to Embodiment 1 is composed of an electronic endoscope (hereinafter simply referred to as an endoscope) 2 , a processor 3 , and a monitor 6 .

[0049] The endoscope 2 is detachably connected to the processor 3 . In addition, the processor 3 incorporates a signal processing device 4 and a light source device 5 . The light source device may also be provided independently of the processor.

[0050] The monitor 6 is connected to the processor 3 and displays the video signal processed by the processor 3 .

[0051] The endoscope 2 has an elongated insertion portion 11 inserted into a patient's body cavity.

[0052] Here, when the insertion part 11 is used for the digestive tract, for the bronchi, for the head and neck (throat) or for...

Embodiment approach 2

[0218] FIG. 12 is a block diagram showing a schematic configuration of an endoscope device according to Embodiment 2 of the present invention, and is similar to FIGS. Figure 11B Components that are the same as those shown in Embodiment 1 are denoted by the same symbols, and explanations thereof are omitted.

[0219] structure

[0220] In Figure 1 to Figure 11B In the first embodiment shown, the endoscope is equipped with a storage mechanism for storing accumulation time data between wavelengths that differs for each type of a plurality of endoscopes. However, in the endoscope device 71 of this embodiment, , the processor 73 is loaded with a storage mechanism for storing the accumulated time data.

[0221] The memory device 81 is loaded in the signal processing device 74 of the processor 73 .

[0222] In the present embodiment, the storage device 81 includes a CPU 82 and a memory (EEPROM or the like) 83 as a storage means.

[0223] The memory 83 is a nonvolatile memory that...

Embodiment approach 3

[0247] FIG. 13 is a block diagram showing a schematic configuration of an endoscope device according to Embodiment 3 of the present invention, which is similar to FIGS. Figure 11B Components that are the same as those shown in Embodiment 1 are denoted by the same symbols, and explanations thereof are omitted.

[0248] As shown in FIG. 13 , the endoscope device 101 according to Embodiment 3 is performed from FIG. 1 to FIG. Figure 11B In Embodiment 1 shown, the spatial frequency characteristic conversion mechanism (pupil modulation element) and the spatial frequency restoration mechanism are newly provided. Therefore, as described below, even when using, for example, a lens with a large diameter as the optical system including the objective lens 17 formed on the CCD 19, it is possible to prevent the depth of field from decreasing and obtain an image with good S / N characteristics.

[0249] That is, an optical component that changes the optical characteristics of the optical syst...

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Abstract

An endoscope apparatus (1) includes an endoscope (2) that has a solid-state image-pickup device (19) in which charges are accumulated in order to pick up an object image. The endoscope apparatus (1) further comprises a memory (22) in which a plurality of pieces of information on the accumulation period during which charges are accumulated in the solid-state image-pickup device (19) is stored, and a drive unit (30) that controls the accumulation period, during which charges are accumulated in the solid-state image-pickup device, on the basis of the pieces of information on the accumulation period stored in the memory.

Description

technical field [0001] The present invention relates to an endoscope device that obtains an image using an imaging element that captures an image of a subject by accumulating charges. Background technique [0002] In general, an endoscope device for performing endoscopic inspection is composed of an endoscope such as an electronic endoscope having a solid-state imaging device, a processor, a light source device, and a monitor. [0003] Such a conventional endoscope device inserts an insertion portion of an endoscope into a body cavity, transmits irradiation light from a light source device through a light guide built in the endoscope, and irradiates a subject. After that, the reflected light from the subject is optically imaged on the solid-state imaging device by the objective lens mounted on the tip of the endoscope, and the optical image is photoelectrically converted by the solid-state imaging device. The output signal obtained by the photoelectric conversion is input t...

Claims

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Application Information

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IPC IPC(8): G01N21/64A61B1/00A61B1/04A61B1/045A61B5/00G02B23/24H04N5/225H04N5/232H04N5/235H04N7/18H04N9/07
CPCH04N5/2354A61B5/0084A61B1/045A61B5/0071A61B1/00009A61B1/043A61B1/0669H04N5/23209H04N2005/2255A61B1/0638H04N9/07A61B1/0646A61B1/000095A61B1/0655H04N23/555H04N23/663H04N23/74H04N23/12
Inventor 道口信行高桥义典今泉克一小泽刚志竹端荣平尾勇实
Owner OLYMPUS CORP