JP2014057231A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus whose manufacturing work is easy and which can obtain image information on a plurality of optical components with one imaging operation.SOLUTION: An optical filter 2 including four types of polarization filter regions 201A to 201D which selectively transmit four polarization components in light condensed by an imaging lens is arranged between the imaging lens 1 and a light reception element array 3, and image information on the four optical components is outputted based on an image signal outputted from the light reception element array in a polarization camera. The polarization camera includes a microlens array 5 where microlenses 501 for condensing light transmitted through the optical filter onto the light reception element array are two-dimensionally arranged. Each microlens is constituted so that light which the microlens condenses is received by different light reception elements in accordance with an incident direction of light which is made incident on the microlens.

Description

  The present invention relates to an optical filter having at least two types of regions selected from one or more selected filter regions that selectively transmit a specific optical component and a non-selected filter region that transmits incident light as they are. The present invention relates to an image pickup apparatus that outputs image information about a plurality of optical components.

  As this type of imaging apparatus, there is an apparatus that generates image information obtained by extracting only a desired polarization component or image information obtained by extracting only a desired wavelength band from an image signal obtained by imaging a predetermined imaging area. Are known. Such an imaging apparatus, for example, two-dimensionally receives a large number of light receiving elements from an optical filter such as a polarizing filter or a spectral filter by using only a desired polarization component or wavelength component (desired optical component) from the light from the imaging region. Light is received by the arranged light receiving element array. Thereby, the image information of the imaging area which extracted the desired optical component according to the light reception amount received by each light receiving element can be obtained.

  Patent Document 1 discloses a polarization imaging apparatus using a polarizer array divided into two or more polarizer regions each having a different transmission axis as an optical filter. This polarization imaging apparatus includes a light receiving element array that independently receives light transmitted through each region of the polarizer array. According to this polarization imaging apparatus, it is possible to obtain image information obtained by extracting two or more different polarization components from each other in one imaging operation.

  Such an optical component extraction image generated from a plurality of different optical components is preferably used for, for example, an object identification process for identifying an object in an imaging region. By using such an optical component extraction image, it is possible to identify an object with higher accuracy than when performing object identification processing with image information (monochrome image information) consisting only of luminance information. In recent years, such an imaging device is used as, for example, an in-vehicle camera, and performs an object detection process based on a captured image obtained by imaging a forward area (imaging area) in the traveling direction of the host vehicle, and the preceding vehicle, an oncoming vehicle, and the like. It is used in a driver assistance system that detects the object of the vehicle and reduces the driving load on the driver of the own vehicle. In addition, it is expected to be widely used in other fields such as an imaging device for an object identification device used for robot control.

  According to the polarization imaging apparatus described in Patent Document 1, image information obtained by extracting two or more different polarization components from each other can be obtained by one imaging operation. However, there are the following problems. That is, in this polarization imaging apparatus, it is necessary to use a polarizer array (optical filter) in which each polarizer region (selection filter region) is periodically arranged so as to correspond one-to-one with an imaging pixel. When manufacturing such a polarizer array, a highly accurate manufacturing operation is required in which individual polarizer regions are formed adjacent to each other at the sub-pixel level. In addition, in order to appropriately obtain image information about a plurality of polarization components using such a polarizer array (optical filter), one or a number on each polarizer region and the light receiving element array of the polarizer array. It is necessary to perform one-to-one alignment with an imaging pixel formed of a single light receiving element. Therefore, the alignment between the polarizer array and the light receiving element array requires subpixel level accuracy. Therefore, the polarization imaging apparatus described in Patent Document 1 has a problem that it is difficult to manufacture due to such a high precision requirement.

  The problem is that the imaging device captures an imaging region through an optical filter in which selection filter regions are periodically arranged so as to have a one-to-one correspondence with an imaging pixel, and outputs image information about a plurality of optical components. Can occur as well. This can also occur in an image pickup apparatus that uses an optical filter in which a selection filter region and a non-selection filter region are periodically arranged so as to have a one-to-one correspondence with an image pickup pixel.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an imaging apparatus that is easy to manufacture and that can obtain image information about a plurality of optical components in a single imaging operation. Is to provide.

  The present invention includes a light collecting means for collecting light from an imaging region, a light receiving element array in which light receiving elements for receiving light collected by the light collecting means are two-dimensionally arranged, the light collecting means, One or two or more types of selective filter regions that are arranged between the light receiving element array and selectively transmit specific optical components of the light collected by the light collecting means and the light collecting means. An optical filter having at least two types of regions selected from non-selection filter regions that transmit light as it is, and a plurality of optical components based on image signals output from the light receiving element array An image pickup apparatus that outputs image information about a micro-light-condensing member array in which a micro-light-condensing member that condenses light transmitted through the optical filter onto the light-receiving element array is two-dimensionally arranged. The condensing member is configured such that light collected by the minute condensing member is received by different light receiving elements according to the incident direction of the light incident on the minute condensing member. .

  In the present invention, image information about a plurality of optical components can be obtained by one imaging operation by using the optical filter having the at least two types of regions. The optical component here includes light that passes through the optical filter as it is. Therefore, according to the imaging apparatus, for example, image information about a plurality of polarization components having different polarization directions, image information about a specific polarization component and non-polarization image information, and a plurality of spectral components having different wavelength bands. Image information, image information about spectral components in a specific wavelength band, non-spectral image information, and the like can be obtained by a single imaging operation.

  In addition, the present invention includes the above-described minute light collecting member array, so that an optical filter in which selection filter regions or non-selection filter regions are periodically arranged so as to correspond one-to-one with an imaging pixel can be used. Equivalent image information can be obtained for a plurality of optical components. This is because the light receiving area on the light receiving element array for receiving the light collected by each micro light collecting member changes according to the incident direction of the light incident on each micro light collecting member of the micro light collecting member array. It utilizes the characteristics of a noptic camera type imaging device. That is, in the present invention, the information on which light receiving element among the light receiving elements associated with each micro light condensing member on the micro light condensing member array is received from which direction with respect to the micro light condensing member. It indicates information for identifying whether the light is incident. Therefore, according to the present invention, different image information can be obtained for each incident direction with respect to the minute light collecting member array. As a result, a selective filter region or a non-selection filter region that transmits a specific optical component is arranged ahead of a specific incident direction with respect to the micro-light-collecting member array, and another tip is placed ahead of another incident direction with respect to the micro-light-collecting member array. If an optical filter having a selection filter region or a non-selection filter region that transmits an optical component is used, the light receiving element received by any one of the light receiving elements associated with each micro light condensing member on the micro light condensing member array This information can identify which region on the optical filter has passed through the light. Therefore, by using the information, image information for a plurality of optical components can be obtained from the image signal output from the light receiving element array.

  Therefore, according to the present invention, there is no need to provide the selection filter region or the non-selection filter region provided in the optical filter so as to correspond one-to-one with each imaging pixel. As a result, when manufacturing an optical filter, there is no need for a highly accurate manufacturing operation in which individual selected filter regions or non-selected filter regions are formed adjacent to each other at the subpixel level. Sub-pixel level accuracy is not required for alignment between the optical filter and the light receiving element array.

  As described above, according to the present invention, it is possible to obtain an excellent effect of facilitating the manufacturing operation of an imaging device that can obtain image information about a plurality of optical components in one imaging operation.

It is explanatory drawing which shows schematic structure of the polarization camera in embodiment. It is a perspective view when the schematic structure of the polarization camera is viewed from the imaging lens side. It is sectional drawing when the schematic structure of the polarization camera is cut perpendicularly to the substrate surface of the sensor substrate. It is explanatory drawing which shows the relationship between the direction of the light which injects into the microlens array in the polarization camera, and the photodiode (imaging pixel) on an image sensor. It is sectional drawing when the schematic structure of the polarization camera in the modification 1 is cut | disconnected perpendicularly | vertically with respect to the substrate surface of a sensor board | substrate. It is sectional drawing when the schematic structure of the polarization camera in the modification 2 is cut | disconnected perpendicularly | vertically with respect to the substrate surface of a sensor board | substrate. It is explanatory drawing which showed the structure of the optical system in the conventional imaging device of a plenoptic camera system. (A) is explanatory drawing which shows a mode that the light emitted from the point light source on the object surface P1 is light-received by the light receiving element array through a micro lens array in the imaging device. (B) is explanatory drawing which shows a mode that the light emitted from the point light source on the object surface P2 is received by the light receiving element array through a micro lens array.

Hereinafter, an embodiment in which the imaging apparatus according to the present invention is applied to a polarization camera that outputs image information of four different polarization components will be described.
FIG. 1 is an explanatory diagram showing a schematic configuration of a polarization camera in the present embodiment.
This polarized camera mainly includes an imaging lens 1 as a condensing means, an optical filter 2, a sensor substrate 4 on which an image sensor 3 having a light receiving element array in which light receiving elements are arranged two-dimensionally, and a sensor substrate. A / D converter 6 that converts an analog electrical signal (the amount of received light received by each light receiving element on image sensor 3) into a digital electrical signal (pixel signal), and an output from A / D converter 6 The signal processing unit 7 performs image processing on the digital electric signal to be generated and generates and outputs image data (image information) for each polarization component.

FIG. 2 is a perspective view of the schematic configuration of the polarization camera according to the present embodiment as viewed from the imaging lens 1 side.
FIG. 3 is a cross-sectional view of the schematic configuration of the polarization camera in the present embodiment cut perpendicularly to the substrate surface of the sensor substrate 4.
As shown in FIG. 2, the optical filter 2 is divided into four areas through which light transmitted through the imaging lens 1 passes. The four divided areas are associated with four types of polarization filter areas (selection filter areas) 201A, 201B, 201C, and 201D that transmit polarization components in different directions (polarization components having different polarization axes), respectively. Yes. The optical filter 2 of the present embodiment includes a cover glass 202 as a surface protective layer on the surface on the imaging lens 1 side. The image sensor 3 is a CCD (Charge Coupled Device) or CMOS (Complementary Metal).
Oxide Semiconductor) and the like, and a photodiode 301 is used as a light receiving element thereof. The photodiodes 301 are two-dimensionally arranged in an array.

  In the present embodiment, a microlens 501 that is a two-dimensionally arranged microlens 501 as a micro-condensing member that condenses light transmitted through the optical filter 2 onto the image sensor 3 is disposed between the optical filter 2 and the image sensor 3. A microlens array 5 is arranged as a condensing member array. The microlens array 5 is a microlens 501 arranged in a two-dimensional manner. On the image sensor 3, a plurality of photodiodes 301 on the image sensor 3 are opposed to one microlens 501. Is provided. In the present embodiment, since the optical filter 2 includes four types of polarizing filter regions, at least four photodiodes 301 are configured to face one microlens 501.

  In the present embodiment, for simplification of description, an example in which 2 × 2 photodiodes 301 are arranged corresponding to one microlens 501 will be described. Therefore, in the present embodiment, one photodiode 301 on the image sensor 3 corresponds to one imaging pixel. On the other hand, one pixel (image pixel) on the image data for the four polarization components imaged by this polarization camera corresponds to one microlens 501, and the resolution of the image data is the image sensor 3. It becomes 1/4 of the resolution of the upper imaging pixel.

  In the present embodiment, the cover glass 202 formed on the surface of the optical filter 2 and the image sensor 3 are connected to each other with a predetermined distance therebetween via the spacer 302. The spacer 302 defines the distance between the optical filter 2 and the microlens array 5 and the image sensor 3 to a predetermined distance.

  In addition, the sensor substrate 4 of the present embodiment functions as an interposer substrate for outputting the output signal of the image sensor 3 to an external circuit substrate. The image sensor 3 and the sensor substrate 4 are electrically connected by a bonding wire 401. In this embodiment, the bonding wire 401 is covered with a sealing resin 402 for mechanically and electrically protecting from the outside. A solder ball 403 for electrically connecting an external circuit board is provided on the surface (back surface) opposite to the surface on which the image sensor 3 is mounted of the sensor substrate 4.

  In the present embodiment, components on the rear side of the imaging lens 1 are packaged. However, there is no limitation on the method of assembling the imaging lens 1, the optical filter 2, the sensor substrate 4 and the like constituting the polarization camera, and the camera housing May be individually assembled, or part or all of them may be packaged.

  The material of the spacer 302 may be a resin material such as an epoxy resin, or may be an inorganic material spacer produced by etching through a silicon substrate. In this embodiment, the sensor board 4 and the external circuit board are connected by a ball grid array. However, the present invention is not limited to this method, and a connection method using a lead grid array or the like is adopted. May be. Further, in the present embodiment, the filter layer portions 201A, 201B, 201C, and 201D of the optical filter 2 are examples of a single layer configuration, but may have a multi-layer configuration, and if a desired filter function can be expressed, the wavelength of light is less than A layer using an optical element using the above structure or a layer using an optical element using a refractive index or a multilayer film may be used.

Next, a mechanism for obtaining image data for four polarization components using the present polarization camera will be described.
FIG. 4 is an explanatory diagram showing the relationship between the direction of light incident on the microlens array 5 and the photodiode 301 (imaging pixel) on the image sensor 3.
In the polarization camera of the present embodiment, information on which photodiode 301 of the four photodiodes 301 associated with each microlens 501 on the microlens array 5 received light is to the microlens 501. This indicates information for identifying the direction from which the light is incident.

  For example, as shown in FIG. 4, light La (obtained from the upper left in the figure) obliquely incident on one microlens 501a of the microlens array 5 and light Lb (obtained obliquely from the lower left in the figure). (Broken line in the figure). In this case, due to the difference in incident angle with respect to the microlens 501a, the incident light La is received by the lower photodiode 301a of the photodiodes 301 corresponding to the microlens 501a, and the incident light Lb is shown in FIG. The light is received by the middle upper photodiode 301a. As described above, the information on which of the four photodiodes 301a to 301d associated with the microlens 501a has received the light specifies from which direction the light is incident on the microlens 501a. Information to be displayed.

  In the present embodiment, the polarizing filter regions 201A to 201D of the optical filter 2 are respectively provided at the tip of the incident direction of the light received by the four photodiodes 301a to 301d associated with the microlens 501a. Has been placed. Therefore, in the present embodiment, information about which photodiode among the four photodiodes 301a to 301d associated with the microlens 501a has received light passes through which polarization filter region 201A to 201D of the optical filter 2. It shows the information that identifies whether the light is light. Therefore, according to the present embodiment, four types of image information about the polarization components respectively selected by the four types of polarization filter regions 201A to 201D of the optical filter 2 are obtained from the image signal output from the image sensor 3. Can do.

[Modification 1]
Next, a modification of the polarization camera in the present embodiment (hereinafter, this modification is referred to as “modification 1”) will be described.
FIG. 5 is a cross-sectional view of the schematic configuration of the polarization camera according to the first modification when cut perpendicularly to the substrate surface of the sensor substrate 4.
In the polarization camera of the first modification, the surface of the filter layer that forms the polarization filter regions 201A, 201B, 201C, and 201D of the optical filter 2 is the surface opposite to the surface facing the image sensor 3 in the cover glass 202. (Upper surface in the figure). With such a configuration, it is possible to reduce the thickness of the package as compared with the configuration of the above embodiment, and it is possible to reduce the space and cost.

[Modification 2]
Next, another modified example of the polarization camera in the present embodiment (hereinafter, this modified example is referred to as “modified example 2”) will be described.
FIG. 6 is a cross-sectional view of the schematic configuration of the polarization camera in the second modification when cut perpendicularly to the substrate surface of the sensor substrate 4.
In the polarization camera of the second modified example, an image signal output from the image sensor 3 that is provided on one surface (the upper substrate surface in the drawing) of the sensor substrate 4 with the through electrode 404 provided on the sensor substrate 4. Are provided on the other surface (lower substrate surface in the figure) of the sensor substrate 4. On the other surface of the sensor substrate 4 (lower substrate surface in the figure), an insulating layer 405 for insulating the image sensor 3 and the through electrode 404 and a solder ball for electrically connecting the external circuit substrate 406 is provided. With such a configuration, the output can be directly transmitted to the outside from the substrate surface of the image sensor 3 without providing an interposer substrate, and the number of components can be reduced and the size can be reduced.

  In the above description, the case where image information about a plurality of polarization components is obtained has been described. However, when obtaining image information about a certain polarization component and non-polarization image information, when obtaining image information about a plurality of wavelength components, The same applies to obtaining image information about a certain wavelength component and non-spectral image information, obtaining image information about a certain polarization component, and image information about a certain wavelength component.

What has been described above is merely an example, and the present invention has a specific effect for each of the following modes.
(Aspect A)
An image sensor 3 or the like in which a light collecting unit such as an imaging lens 1 that collects light from the imaging region and a light receiving element such as a photodiode 301 that receives light collected by the light collecting unit are two-dimensionally arranged. A light receiving element array, disposed between the light condensing means and the light receiving element array, selectively transmits each of a plurality of optical components (four polarization components) of the light condensed by the light converging means. An optical filter 2 having a selection filter region such as four types of polarizing filter regions 201A to 201D to be output, and output image information about a plurality of optical components based on an image signal output from the light receiving element array. In an imaging apparatus such as a polarization camera, a micro-condensing member such as a microlens 501 that condenses light transmitted through the optical filter onto the light receiving element array is two-dimensionally arranged. The micro condensing member array such as the black lens array 5 has an array of micro condensing members, and the light condensing by the micro condensing member is different depending on the incident direction of the light incident on the micro condensing member. The light receiving element is configured to receive light.
According to this, information indicating which light receiving element among the predetermined number of light receiving elements (more than the number of types of areas of the optical filter) associated with each minute light collecting member is which region of the optical filter. It indicates information that identifies whether the light has passed through. Therefore, image information about a plurality of optical components transmitted through each area of the optical filter can be obtained from the image signal output from the light receiving element array. In addition, by providing the above-described micro light condensing member array, a plurality of optical components can be obtained without using an optical filter in which selection filter regions or non-selection filter regions are periodically arranged so as to correspond one-to-one with imaging pixels. The equivalent image information can be obtained for the imaging device, and the manufacturing operation of the imaging device is facilitated.

(Aspect B)
In the aspect A, the at least two types of regions included in the optical filter are each configured to form a single region.
According to this, the number of region partitions formed on the optical filter is equal to the number of types of regions, and one partition area can be made wider than when two or more partitions are formed for one type of region. it can. Therefore, high-precision work is not required for manufacturing the optical filter.

(Aspect C)
In the aspect A or B, the at least two types of regions of the optical filter include two or more types of polarizing filter regions that transmit polarized components in different directions.
According to this, image information about a plurality of polarization components can be obtained.

(Aspect D)
In any of the above aspects A to C, the at least two types of regions of the optical filter include two or more types of spectral filter regions that transmit different wavelength components. And
According to this, image information about a plurality of wavelength components can be obtained.

(Aspect E)
In any one of the above aspects A to D, the optical filter has a structure in which members constituting the at least two types of regions are laminated.
This makes it easier to obtain higher filter characteristics than the single layer structure.

(Aspect F)
In any one of the above aspects A to E, a surface protective layer such as a cover glass 202 formed on the surface of the optical filter and the light receiving element array are connected to each other with a predetermined distance apart via a spacer 302. It is characterized by being.
Thereby, the distance of an optical filter, a light receiving element array, and a micro condensing member array can be stably maintained at a predetermined distance that allows an appropriate imaging operation.

(Aspect G)
In any of the above aspects A to F, an interposer substrate such as a sensor substrate 4 for outputting an image signal output from the light receiving element array to an external circuit board, the light receiving element array, the interposer substrate, And a sealing member such as a sealing resin 402 that mechanically and electrically protects the bonding wire.
According to this, an image signal from the light receiving element array can be output to an external circuit board with a simple configuration.

(Aspect H)
In any of the above aspects A to G, by providing a through electrode 404 on a substrate on which the light receiving element array is mounted on one substrate surface, an output terminal for an image signal output from the light receiving element array is provided. It is provided on the other substrate surface of the substrate.
According to this, it becomes possible to transmit the output directly from the substrate surface of the image sensor 3 without providing an interposer substrate, and the number of parts can be reduced and the size can be reduced.

  As described above, the polarization camera according to the present embodiment has the microlens array 5 arranged in front of the image sensor 3. Such an arrangement configuration is also adopted in, for example, the imaging device described in Patent Document 2. Has been. The imaging apparatus described in Patent Document 2 is a plenoptic camera type imaging apparatus (light field camera) capable of generating a plurality of mutually different focal plane images by image processing. The imaging apparatus includes a lens that collects object light from an imaging region, a microlens array in which a plurality of microlenses that receive the object light collected by the lens, and a focal length of the microlens array. And a light-receiving element array disposed at the position.

Here, the imaging principle of the plenoptic camera type imaging apparatus will be described with reference to the drawings.
FIG. 7 is an explanatory diagram showing a configuration of an optical system in a plenoptic camera type imaging apparatus.
This imaging device includes an imaging lens (light collecting means) 11, a micro lens array (micro light collecting member array) 15, and a light receiving element array 13. The microlens array 15 includes microlenses 15 a, 15 b, 15 c,... (Micro condensing members) regularly arranged on a two-dimensional plane with a micro-order pitch. It is arranged in the vicinity of The example of FIG. 7 is an example in which the object plane P <b> 1 in the imaging region forms an image on the microlens array 15. At this time, the light emitted from the point light source on the object plane P <b> 1 passes through the imaging lens 11, and then converges on one microlens 15 a on the microlens array 15. The light condensed on the microlens 15 a is then received by a corresponding light receiving region composed of one or more light receiving elements on the light receiving element array arranged immediately after the microlens array 15.

FIG. 8A is an explanatory diagram showing a state in which light emitted from the point light source on the object plane P1 is received by the light receiving element array 13 through the microlens array 15. FIG.
FIG. 8B shows a state where light emitted from a point light source on the object plane P2 (see FIG. 7) closer to the imaging lens 11 than the object plane P1 is received by the light receiving element array 13 via the microlens array 15. It is explanatory drawing which shows.
The light from the point light source on the object plane P1 is received by a region 13a on the light receiving element array 13 corresponding to one microlens 15a on the microlens array 15, as shown in FIG. As described above, the region where the light from each point light source on the object plane P1 is received is determined corresponding to each microlens 15a, 15b, 15c,... On the microlens array 15.

  On the other hand, the light from the point light source on the object plane P2 is not focused on only one microlens on the microlens array 15 as shown in FIG. As shown, the light enters a plurality of microlenses 15 a to 15 e on the microlens array 15. Thereafter, the light incident on the microlenses 15 a to 15 e converges or diverges individually, and is received by being divided into a plurality of regions on the light receiving element array 13. Therefore, the light from the point light source on the object plane P2 is not received in the same area as the corresponding light receiving area where the light from each point light source on the object plane P1 is received. The light receiving area distribution on the light receiving element array 13 differs depending on whether it is near or far from the object plane P1, which is a conjugate plane of the microlens array 15. By using such a difference, a plenoptic camera type imaging apparatus can generate a plurality of different focal plane images by image processing.

  Such a plenoptic camera type imaging device also has a microlens array arranged in front of the light receiving element array, and information on which light receiving element among the light receiving elements associated with each microlens receives light. This is common to the polarization camera of the present embodiment in that it uses a technique for identifying from which direction the light is incident on each microlens. However, the plenoptic camera type imaging apparatus obtains a plurality of focal plane images by image processing from image signals from the light receiving element array. Therefore, the configuration and arrangement relationship of the imaging lens, the microlens array, and the light receiving element array are determined so that such a plurality of focal plane images can be obtained, and such a plurality of focal plane images can be obtained. Special image processing.

  On the other hand, the polarization camera of the present embodiment obtains an image for each light (optical component selected when passing through the area) that has passed through each area of the optical filter divided into areas. Therefore, the configuration and arrangement relationship of the imaging lens, the optical filter, the microlens array, and the light receiving element array are determined so that an image of such a plurality of optical components can be obtained, and such a plurality of optical components Specific image processing is performed so as to obtain an image of. Since the plenoptic camera type imaging apparatus does not include such an optical filter divided into regions, it does not suggest the polarization camera of this embodiment.

DESCRIPTION OF SYMBOLS 1 Imaging lens 2 Optical filter 3 Image sensor 4 Sensor board 5 Micro lens array 6 A / D conversion part 7 Signal processing part 201A, 201B, 201C, 201D Polarization filter area | region 202 Cover glass 301 Photodiode 302 Spacer 401 Bonding wire 402 Sealing Resin 403, 406 Ball solder 404 Through electrode 405 Insulating layer 501 Microlens

JP 2007-86720 A JP 2009-244661 A

Claims (8)

Condensing means for condensing light from the imaging region;
A light receiving element array in which light receiving elements that receive light collected by the light collecting means are two-dimensionally arranged;
One or two or more types of selective filter regions that are arranged between the light condensing means and the light receiving element array and selectively transmit a specific optical component of the light condensed by the light condensing means; An optical filter having at least two types of areas selected from non-selective filter areas that transmit light collected by the light collecting means as it is;
In an imaging device that outputs image information about a plurality of optical components based on an image signal output from the light receiving element array,
A micro condensing member array in which a micro condensing member that condenses light transmitted through the optical filter onto the light receiving element array is two-dimensionally arranged;
Each minute condensing member is configured such that light collected by the minute condensing member is received by different light receiving elements according to the incident direction of the light incident on the minute condensing member. An imaging device. The imaging device according to claim 1.
The image pickup apparatus, wherein each of the at least two types of regions of the optical filter is configured to form a single region. The imaging device according to claim 1 or 2,
2. The imaging apparatus according to claim 1, wherein the at least two types of regions of the optical filter include two or more types of polarizing filter regions that transmit polarized components in different directions. The imaging device according to any one of claims 1 to 3,
2. The imaging apparatus according to claim 1, wherein the at least two types of regions of the optical filter include two or more types of spectral filter regions that transmit different wavelength components. The imaging device according to any one of claims 1 to 4,
The optical filter has a structure in which members constituting the at least two types of regions are laminated. The imaging device according to any one of claims 1 to 5,
An imaging apparatus, wherein a surface protective layer formed on a surface of the optical filter and the light receiving element array are connected to each other with a predetermined distance therebetween via a spacer. The imaging apparatus according to any one of claims 1 to 6,
An interposer substrate for outputting an image signal output from the light receiving element array to an external circuit substrate;
A bonding wire for electrically connecting the light receiving element array and the interposer substrate;
An imaging device comprising: a sealing member that mechanically and electrically protects the bonding wire. The imaging device according to any one of claims 1 to 7,
An output terminal for an image signal output from the light receiving element array is provided on the other substrate surface of the substrate by providing a through electrode on the substrate on which the light receiving element array is mounted on one substrate surface. An imaging device.

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