JP2012142896A - Electronic display apparatus and imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an image from being obstructed by dust inside an electronic display apparatus.SOLUTION: The electronic display apparatus comprises: a display panel which outputs the image; an optical system disposed separately from the display panel, on the output side of the display panel; and an adhesive member exposed between the display panel and the optical system. An imaging apparatus comprises imaging means for imaging a subject and the electronic display apparatus. The surface of the adhesive member of the electronic display apparatus may be waved partially.

Description

  The present invention relates to an electronic display device and an imaging device.

An electronic display device having a liquid crystal display device or the like and having an image output side substantially sealed is known (see, for example, Patent Document 1).
[Prior art documents]
[Patent Literature]
[Patent Document 1] JP-A-2005-208492

  However, there is a problem that dust or the like inside the electronic display device blocks an image.

According to a first aspect of the present invention, there is provided a display panel that outputs an image, an optical system that is arranged on the output side of the display panel and spaced from the display panel, and between the display panel and the optical system. It is an electronic display device provided with the adhesive member arranged to be exposed.
According to a second aspect of the present invention, there is provided an image pickup apparatus including an image pickup unit that picks up an image of a subject and the electronic display device according to any one of claims 1 to 8.

  It should be noted that the above summary of the invention does not enumerate all the necessary features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

1 is an overall configuration diagram of an imaging device equipped with an electronic display device according to an embodiment. It is a longitudinal cross-sectional view of an electronic display apparatus. It is a longitudinal cross-sectional view along the III-III line of FIG. It is a disassembled perspective view of an electronic display apparatus. It is a longitudinal cross-sectional view of the electronic display device by embodiment which changed some adhesive members. It is sectional drawing along the VI-VI line in FIG. It is a longitudinal cross-sectional view of the electronic display device by embodiment which changed some adhesive members. It is a longitudinal cross-sectional view of the electronic display device by embodiment which changed some adhesive members.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is an overall configuration diagram of an imaging apparatus equipped with an electronic display device according to an embodiment. The front and rear indicated by arrows in FIG. As shown in FIG. 1, the imaging device 10 includes a lens unit 12 and an imaging main body 14.

  The lens unit 12 includes a fixed cylinder 18, a plurality of imaging lenses 20, a lens mount 22, and a lens barrel CPU 24. One end of the fixed cylinder 18 is connected to the imaging main body 14 via the lens mount 22. The plurality of imaging lenses 20 are held by the fixed cylinder 18 with the optical axes OA aligned. The foremost imaging lens 20 is fixed to the fixed cylinder 18. On the other hand, the remaining imaging lens 20 is supported by the fixed cylinder 18 so as to be movable along the optical axis OA. As a result, the imaging lens 20 changes the magnification, focal length, or focal position. The lens barrel CPU 24 communicates with the imaging main body 14 and controls the operation of the lens unit 12. Thereby, when the lens unit 12 is attached to the imaging main body 14, the lens unit 12 operates in cooperation with the imaging main body 14.

  The imaging main body 14 includes a housing 30, a body mount 32, an imaging unit 34, an electronic display device 36, a main body control unit 38, and a main display unit 40.

  The housing 30 accommodates and holds the imaging unit 34, the electronic display device 36, the main body control unit 38, and the main display unit 40. The body mount 32 is provided on the front surface of the housing 30. The body mount 32 is connected to the lens mount 22. Thereby, the lens part 12 is attached to the imaging main body 14 so that attachment or detachment is possible.

  The imaging unit 34 is an example of an imaging unit that images a subject. The imaging unit 34 includes a low-pass filter 44 and an image sensor 46. The low pass filter 44 includes a material having a birefringence. The low pass filter 44 is disposed on an extension line of the optical axis OA of the imaging lens 20. The low pass filter 44 optically cancels the false color.

  The image sensor 46 includes a CCD (= Charge Coupled Device) sensor or a CMOS (= Complementary Metal Oxide Semiconductor) sensor. The image sensor 46 converts the input optical image of the subject into an image signal that is an electrical signal by photoelectric conversion and outputs the image signal. The imaging element 46 is disposed on an extension line of the optical axis OA of the imaging lens 20. The image sensor 46 is disposed behind the low-pass filter 44. The image sensor 46 has a plurality of pixels. The plurality of pixels also function as AE (= automatic exposure) pixels and AF (= autofocus) pixels. The imaging element 46 has a contrast AF function that drives the imaging lens 20 so as to maximize the contrast value.

  The electronic display device 36 is disposed in the upper part of the rear part of the housing 30. The electronic display device 36 outputs an image picked up by the image sensor 46 and converted into an electric signal, and provides it to the user.

  The main body control unit 38 includes a main board 50, a main body CPU 52, and an image processing unit 54. The main board 50 is disposed on the back surface of the housing 30. The main board 50 holds the main body CPU 52 and the image processing unit 54. The main body CPU 52 governs overall control of the imaging apparatus 10. The main body CPU 52 is connected to the lens barrel CPU 24, the image processing unit 54, and the main display unit 40 so as to be able to input and output signals. The image processing unit 54 converts the analog electrical signal output from the image sensor 46 into image data and outputs the image data to the main body CPU 52.

  The main display unit 40 is disposed on the rear surface of the housing 30. The rear surface of the main display unit 40 is exposed. Image data is input to the main display unit 40 from the main body CPU 52. The main display unit 40 displays a through image in the live view mode based on the image data. The main display unit 40 displays various images including a reproduced image of the captured image.

  FIG. 2 is a longitudinal sectional view of the electronic display device. 3 is a longitudinal sectional view taken along line III-III in FIG. FIG. 4 is an exploded perspective view of the electronic display device. In FIG. 4, a part of the side surface and the upper surface is omitted.

  The electronic display device 36 provides an image captured by the image sensor 46 to the user 90. In the image provided to the user, the pixels are subtracted from the captured image. As shown in FIGS. 2, 3, and 4, the electronic display device 36 includes a holding member 60, a display panel 62, a lens unit 64, a protective glass 66, an adhesive member 68, and an adhesive member 70. And have.

  The holding member 60 is fixed to the upper part of the rear part of the housing 30. The holding member 60 accommodates and holds the display panel 62, the lens unit 64, the protective glass 66, and the adhesive members 68 and 70. The holding member 60 is formed in a hollow square tube shape. The front surface and the rear surface of the holding member 60 are opened.

  The display panel 62 is fixed to the front portion of the holding member 60. As a result, the display panel 62 closes the opening at the rear of the holding member 60. The display panel 62 has an electronic display panel such as a liquid crystal display panel or an organic EL display panel. The display panel 62 has an output surface 72 for outputting an image. The output surface 72 of the display panel 62 outputs an image backward. The display panel 62 is connected to the main body CPU 52 of the main body control unit 38 so that signals can be input and output. Accordingly, the display panel 62 outputs an image based on the image data being imaged by the image sensor 46 and input from the main body CPU 52.

  The lens unit 64 is disposed between the display panel 62 and the protective glass 66. The lens unit 64 includes a lens holding member 74 and three lenses 76 that are an example of an optical system.

  The lens holding member 74 is formed in a hollow rectangular tube shape. The outer peripheral surface of the lens holding member 74 is configured to contact the inner peripheral surface of the holding member 60. The lens holding member 74 is supported by the holding member 60 so as to be movable in the front-rear direction with respect to the holding member 60. Accordingly, the lens holding member 74 is moved in the front-rear direction when the user operates a diopter adjustment unit such as a dial (not shown).

  The three lenses 76 are arranged on the output side of the display panel 62 so as to be separated from the display panel 62. The three lenses 76 are arranged so that their optical axes coincide with each other and spaced from each other. The three lenses 76 are fixed to the lens holding member 74. As a result, the lens 76 moves in the front-rear direction together with the lens holding member 74.

  The protective glass 66 is made of a material that can transmit an image output from the display panel 62. The protective glass 66 is formed in a rectangular plate shape that is substantially the same as the opening of the holding member 60. The protective glass 66 is provided at the front portion of the holding member 60. Thereby, the protective glass 66 closes the opening of the front part of the holding member 60. As a result, the space in which the lens unit 64 is disposed is sealed by the holding member 60, the display panel 62, and the protective glass 66.

  The adhesive members 68 and 70 include a material capable of adsorbing dust, dust, and the like. The surfaces of the adhesive members 68 and 70 are black. The adhesive members 68 and 70 are formed in a thin film shape. At least a part of the adhesive members 68 and 70 is exposed toward the inside of the electronic display device 36.

  The adhesive member 68 is disposed on the rear surface of the display panel 62. As a result, the adhesive member 68 is exposed and disposed between the display panel 62 and the lens 76. The adhesive member 68 is provided over the entire circumference so as to surround the output surface 72.

  The adhesive member 70 is disposed over the entire inner peripheral surface of the lens holding member 74 between the display panel 62 and the lens 76. The adhesive member 70 is provided on the inner peripheral surface of the lens holding member 74 where the lens 76 is not disposed, that is, on the exposed inner peripheral surface of the lens holding member 74. The adhesive member 70 is disposed so as to be exposed between the display panel 62 and the lens 76. The thickness of the adhesive member 70 in the vertical direction is set so that the inner peripheral surface of the adhesive member 70 is outside the outer peripheral surface of the output surface 72. Thereby, the adhesive member 70 does not block the image output from the display panel 62. It is preferable that the adhesive force of the adhesive member 70 provided in the lower part is larger than the adhesive force of the adhesive member 70 provided in the upper part.

  Next, the operation of the imaging device 10 described above will be described. First, the subject image is received by the imaging element 46 of the imaging unit 34 via the imaging lens 20 of the lens unit 12. The image sensor 46 photoelectrically converts the received subject image and outputs it as an electrical signal to the image processing unit 54 of the main body control unit 38. The image processing unit 54 converts the input electrical signal into image data and outputs the image data to the main body CPU 52. The main body CPU 52 outputs a drive instruction to the lens barrel CPU 24 based on the input image data. Thereby, the lens barrel CPU 24 performs control such as driving the imaging lens 20 of the lens unit 12 to focus the subject image. The main body CPU 52 outputs the input image data to the main display unit 40 and the display panel 62 of the electronic display device 36. Thereby, the main display unit 40 and the display panel 62 display the subject image captured by the image sensor 46.

  The user views the subject image displayed on the main display unit 40. Alternatively, the user views the subject image displayed on the display panel 62 through the protective glass 66 and the lens 76. Here, since the electronic display device 36 includes the adhesive members 68 and 70, dust, dust and the like inside the electronic display device 36 are adsorbed by the adhesive members 68 and 70. As a result, the user can view the subject image on the display panel 62 without being blocked by dust or the like. Furthermore, since the adhesive members 68 and 70 are black, the adhesive members 68 and 70 have a light shielding property and hardly reflect the image output from the display panel 62. For this reason, since the stray light hardly occurs, the user can visually recognize a clear image. In addition, when the user operates the diopter adjustment unit, the lens unit 64 is moved either forward or backward, and the diopter is adjusted. In this way, when the lens unit 64 moves, the adhesive members 68 and 70 provided on the inner peripheral surface of the lens holding member 74 of the lens unit 64 also move together, so that adsorption of dust or the like by the adhesive members 68 and 70 is performed. Reduction of the effect is suppressed.

  Thereafter, the user operates a release button (not shown) while viewing the subject image displayed on the main display unit 40 or the display panel 62. Thus, the main body CPU 52 stores the image data of the captured subject image.

  As described above, in the electronic display device 36 of the imaging device 10, the adhesive members 68 and 70 are provided between the display panel 62, the lens unit 64, and the protective glass 66. For this reason, since the adhesive members 68 and 70 adsorb dust or the like inside the electronic display device 36 that is difficult to remove from the outside, it is possible to suppress the dust or the like from adhering to the display panel 62. Moreover, since the adhesive members 68 and 70 have adsorption power, it can suppress that the dust etc. which were once adsorbed peel off. Thereby, it can suppress that the image output from the display panel 62 by the adhesion members 68 and 70 is obstruct | occluded with dust. As a result, the image quality of the image provided to the user can be improved.

  In the electronic display device 36, since the adhesive member 70 is provided on the inner peripheral surface of the lens holding member 74 of the lens unit 64, the adhesive member 70 moves back and forth together with the lens unit 64. Thereby, it can suppress that the adsorption | suction effect of the adhesion member 70 reduces by the movement of the lens unit 64. FIG.

  In the electronic display device 36, since the adhesive members 68 and 70 are black, the adhesive members 68 and 70 have light shielding properties. Thereby, since it can suppress that the adhesion members 68 and 70 reflect an image, and can suppress a stray light, the user can visually recognize a clear image.

  FIG. 5 is a longitudinal sectional view of an electronic display device according to an embodiment in which a part of the adhesive member is changed. 6 is a cross-sectional view taken along line VI-VI in FIG. As shown in FIGS. 5 and 6, in the electronic display device 136, the inner surface of the adhesive member 170 is formed in an uneven shape over the entire circumference. Thereby, since the surface area of the internal peripheral surface of the adhesion member 170 becomes large, the adhesion member 170 can adsorb | suck dust etc. more efficiently.

  FIG. 7 is a longitudinal sectional view of an electronic display device according to an embodiment in which a part of the adhesive member is changed. As shown in FIG. 7, in the electronic display device 236, the adhesive member 270 is provided at least at the upper part and the lower part between the display panel 62 and the lens 76. The upper part of the inner surface of the adhesive member 270 is formed in an uneven shape. The height and width of the unevenness may be changed as appropriate, but as an example, the height difference of the unevenness is 100 μm and the width of the unevenness is 100 μm. On the other hand, the lower part of the inner surface of the adhesive member 270 is formed flat. Thereby, the adhesive member 270 can efficiently adsorb dust and the like that has risen inside the lens unit 64. As a result, since dust or the like can be prevented from falling inside the lens unit 64, the electronic display device 236 can improve the image quality of the image provided to the user. In this embodiment, the adhesive member 270 may be provided on the left and right side surfaces.

  FIG. 8 is a longitudinal sectional view of an electronic display device according to an embodiment in which a part of the adhesive member is changed. As shown in FIG. 8, in the electronic display device 336, the adhesive member 370 is formed below the lens holding member 74 between the display panel 62 and the lens 76. As a result, while reducing the material cost of the adhesive member 370, the adhesive member 370 efficiently adsorbs dust or the like deposited on the lower portion, so that it is possible to suppress the dust or the like from rising. As a result, the electronic display device 336 can improve the image quality of the image provided to the user.

  In the above-described embodiment, the example in which the electronic display device is mounted on the imaging device has been described.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that the output can be realized in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the description, and the drawings, even if it is described using “first”, “next”, etc. for convenience, it means that it is essential to carry out in this order. It is not a thing.

10 Imaging device
12 Lens section
14 Imaging body
18 Fixed cylinder
20 Imaging lens
22 Lens mount
24 lens barrel CPU
30 housing
32 body mount
34 Imaging unit
36 Electronic display
38 Control unit
40 Main display
44 Low-pass filter
46 Image sensor
50 Main board
52 CPU
54 Image processing unit
60 Holding member
62 Display panel
64 Lens unit
66 Protective glass
68 Adhesive material
70 Adhesive material
72 Output surface
74 Lens holding member
76 lenses
90 users
136 Electronic display device
170 Adhesive member
236 Electronic display device
270 Adhesive member
336 Electronic display device
370 Adhesive member

Claims (9)

A display panel for outputting images;
An optical system disposed on the output side of the display panel and spaced apart from the display panel;
An electronic display device comprising: an adhesive member exposed and disposed between the display panel and the optical system. The electronic display device according to claim 1, wherein a part of the surface of the adhesive member is uneven. The adhesive member is provided at least on the upper part and the lower part between the display panel and the optical system,
The upper surface of the adhesive member is uneven,
The electronic display device according to claim 1, wherein a lower surface of the adhesive member is flat. The electronic display device according to any one of claims 1 to 3, wherein the adhesive member is provided at least in a lower portion between the display panel and the optical system. 5. The electronic display device according to claim 1, wherein the adhesive member is provided over the entire circumference between the display panel and the optical system. 6. The adhesive member is provided at least on the upper part and the lower part between the display panel and the optical system,
6. The electronic display device according to claim 1, wherein an adhesive force of the adhesive member provided in the lower portion is larger than an adhesive force of the adhesive member provided in the upper portion. The display panel has an output surface for outputting an image,
The electronic display device according to claim 1, wherein the adhesive member is provided on the display panel so as to surround the output surface of the display panel. The electronic display device according to claim 1, wherein a surface of the adhesive member is black. Imaging means for imaging a subject;
An imaging device comprising the electronic display device according to any one of claims 1 to 8.

Images