Optical component mounting structure and optical device

Abstract

The invention provides an optical component mounting structure and an optical device. The filter mounting structure (60) includes a filter (62), a pressing plate (64), a housing (72), and an applying portion (91). The filter (62) is a light-transmissive member. The pressing plate (64) is elastically deformable and presses the filter (62) in the front-rear direction. The housing (72) is provided with: a housing section (76) that houses the filter (62); and a fixing part (82) which is arranged on a peripheral wall part (77) surrounding the accommodating part (76) and fixes the pressing plate (64). The applying part (91) is arranged at a position closer to the outer side than the fixing part (82) of the housing (72) in the left-right direction and the up-down direction. Furthermore, the applying section (91) applies a force to both end sections (TA, TB) of the pressing plate (64) in the left-right direction such that a center section (M1) of the pressing plate (64) in the left-right direction is closer to the filter (62) than the both end sections (TA, TB) in the front-rear direction.

Description

Technical Field

[0001] The invention relates to an optical component mounting structure and an optical device. Background Art

[0002] The shutter unit disclosed in Patent Document 1 includes a neutral density filter and a neutral density filter pressing plate for pressing the neutral density filter.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2007-093710

[0004] When the optical component is fixed to the housing, there is a structure in which the optical component is fixed by pressing a pressing plate against the optical component, as in the shutter unit of Patent Document 1. In this structure, when both ends of the pressing plate in one direction are pressed toward the optical component, the central portion in the one direction is easily bent in a direction away from the optical component, and the optical component is easily displaced relative to the housing. Summary of the invention

[0005] An object of the present invention is to provide an optical component mounting structure and an optical device capable of suppressing positional deviation of an optical component relative to a housing.

[0006] An optical component mounting structure of one embodiment comprises an optical component, a pressing plate, a housing, and an applying portion. The optical component is capable of transmitting light. The pressing plate is capable of elastic deformation to press the optical component in a first direction. The housing is provided with: a storage portion that stores the optical component; and a fixing portion that is provided on a peripheral wall portion surrounding the storage portion and fixes the pressing plate. The applying portion is provided at a position that is closer to the outside than the fixing portion of the housing in a second direction intersecting the first direction. Furthermore, the applying portion applies a force to both ends of the pressing plate in the second direction so that the central portion of the pressing plate in the second direction is closer to the optical component in the first direction than the both ends in the second direction.

[0007] An optical device according to one embodiment includes the optical component mounting structure according to the above-described one embodiment and a light receiving unit that receives light that has passed through the optical component.

[0008] According to the present invention, it is possible to suppress positional deviation of the optical component with respect to the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a longitudinal sectional view of the camera module according to the first embodiment.

[0010] Figure 2 yes Figure 1 An exploded perspective view of the camera module is shown.

[0011] Figure 3It is a perspective view showing the internal structure of a shutter unit provided in the camera module.

[0012] Figure 4 It shows that Figure 3 A perspective view of the shutter unit shown in the figure with the shutter components removed.

[0013] Figure 5 It is a top view showing a state where the filter and the pressing plate are mounted on the housing.

[0014] Figure 6 This is a top view of the housing with the filter and press plate removed.

[0015] Figure 7 It is shown Figure 5 A three-dimensional diagram showing the arrangement relationship of the housing, filter and pressing plate.

[0016] Figure 8 It is shown Figure 7 The four stages of the housing shown are arranged asymmetrically with respect to the center position of the pressing plate.

[0017] Fig. 9 This is a plan view showing a state in which four stages of a housing according to a modification of the first embodiment are arranged line-symmetrically with respect to the center position of the pressing plate.

[0018] Fig.10 2 is a longitudinal sectional view showing a state in which the central portion of the long side of the pressing plate receiving the reaction force from the stage portion of the housing in the camera module of the first embodiment is bent ( Figure 8 AA line section view).

[0019] Fig.11 This is a longitudinal sectional view showing a state in which a central portion of a short side of a pressing plate that has received a reaction force from a stage portion of a housing in the camera module according to the first embodiment is bent.

[0020] Fig.12 This is an enlarged cross-sectional view showing a state where a magnet of the camera module according to the second embodiment applies a force to an end portion of a pressing plate.

[0021] Fig.13 yes Fig. 9 The table and the pressing plate shown are modified examples having four corners.

[0022] Description of symbols

[0023] 10: camera module; 12: lens barrel; 14: holder body; 15: unit storage portion; 15A: rear surface; 16: lens holder; 18: lens; 22: lens; 24: spacer; 26: ring member; 32: sensor substrate; 34: substrate; 34A: front surface; 34B: rear surface; 35: edge; 36: imaging element; 37: imaging surface; 40: shutter unit; 42: shutter mechanism; 44: blade pressing member; 44A: opening; 46: first blade; 47: second blade; 48: partition plate; 48A: opening; 49: pin; 52: coil base; 53: yoke; 54: rotor magnet; 56: rod blade; 58: connecting rod; 60: filter Mirror mounting structure; 62: filter; 62A: upper end surface; 62B: lower end surface; 62C: left end surface; 62D: right end surface; 62E: surface; 63: rear end surface; 64: pressing plate; 64A: upper frame portion; 64B: lower frame portion; 64C: left frame portion; 64D: right frame portion; 64E: rear surface; 64F: front surface; 65: opening portion; 66A: fixing hole; 66B: fixing hole; 66C: fixing hole; 66D: fixing hole; 67: outer peripheral portion; 67A: arc portion; 67B: arc portion; 67C: arc portion; 67D: arc portion; 68: through hole; 69: through hole; 72: housing; 74: housing body; 75: hole portion; 76: storage portion; 77: Peripheral wall portion; 78: bottom surface; 79: pin; 81: pin; 82: fixing portion; 83: column portion; 84: column portion; 85: column portion; 86: column portion; 87: flange; 91: application portion; 92: support portion; 93: platform portion; 94: platform portion; 95: platform portion; 96: platform portion; 98: support surface; 100: filter mounting structure; 102: pressing plate; 103: outer peripheral portion; 104: arc portion; 106: application portion; 108: support portion; 109A: platform portion; 109B: platform portion; 109C: platform portion; 109D: platform portion; 110: filter mounting structure; 112: pressing plate; 114: application portion; 115: mounting wall; 115A: wall portion; 115B: extension portion; 1 16: Opposing surface; 118: Magnet; 118A: Front surface; 118B: Rear surface; 120: Filter mounting structure; 122: Pressing plate; 123: Peripheral portion; 124: Corner portion; 126: Applying portion; 128: Supporting portion; 129A: Table portion; 129B: Table portion; 129C: Table portion; 129D: Table portion; C1: Imaginary line; C2: Imaginary line; F: Arrow; h1: 1st height; h2: 2nd height; K: Optical axis; LS: Long side portion; M: Arrow; M1: Central portion; M2: Central portion; SS: Short side portion; t1: Thickness; t2: Thickness; TA: Both ends; TB: Both ends; TC: Both ends; TD: Both ends; W1: Width; W2: Width. DETAILED DESCRIPTION

[0024] Hereinafter, an embodiment and a modification of the present invention are described in detail with reference to the accompanying drawings. In addition, in all the accompanying drawings referred to for describing each embodiment and each modification, the same reference numerals are used for the same or substantially the same structures and elements. In addition, in principle, no repeated description is made for the structures and elements that have been described once. In the following description, unless otherwise specified, the terms "first", "second", etc. are used only to distinguish the constituent elements from each other and do not indicate a specific order or sequence.

[0025] [Configurations of the first embodiment]

[0026] Figure 1 A camera module 10 according to a first embodiment is shown.

[0027] (Camera Module)

[0028] The camera module 10 is an example of an optical device. The camera module 10 includes a filter mounting structure 60 and an imaging element 36. The filter mounting structure 60 is an example of an optical component mounting structure.

[0029] like Figure 2 As shown, the camera module 10 has a lens barrel 12, a sensor substrate 32, and a shutter unit 40. The sensor substrate 32 includes an imaging element 36. The shutter unit 40 includes a filter mounting structure 60 ( Figure 1 The shutter unit 40 is accommodated in the lens barrel 12 . In a state where the shutter unit 40 is accommodated in the lens barrel 12 , the sensor substrate 32 closes the rear end portion of the lens barrel 12 .

[0030] <Lens barrel>

[0031] like Figure 1 As shown, the lens barrel 12 includes a holder body 14 , a lens 18 , a lens 22 , a spacer 24 , and a ring member 26 .

[0032] As an example, the holder body 14 is made of resin. In addition, the holder body 14 has a unit storage portion 15 and a lens holder 16, each of which is formed in a cylindrical shape and integrated. The size of the inner diameter of the unit storage portion 15 is larger than the size of the inner diameter of the lens holder 16. The shutter unit 40 is stored inside the unit storage portion 15. The lens 18, the lens 22, the spacer 24, and the ring member 26 are stored inside the lens holder 16.

[0033] The outer peripheries of the lenses 18 and 22 are held by the lens holder 16. The lenses 18 and 22 are located on the same optical axis K. Figure 1, the optical axis K is represented by a single-dot chain line. The direction along the optical axis K is set as the front-to-back direction (optical axis direction). The front-to-back direction is an example of the first direction. In addition, two directions perpendicular to the front-to-back direction are set as the up-down direction and the left-to-right direction. The up-down direction and the left-to-right direction are examples of the second direction intersecting the first direction. In addition, an inclined direction intersecting both the up-down direction and the left-to-right direction is also included in the example of the second direction. The lens 18 is located on the front side relative to the lens 22. The left side and the right side refer to the left side and the right side when the sensor substrate 32 side is observed from the lens 18 side.

[0034] In the following description of the arrangement of the components of the camera module 10, the description is made on the assumption that the arrangement is in a horizontal direction along the front-back direction. In addition, the front-back direction, the left-right direction, and the up-down direction are directions set as an example to explain the arrangement relationship of the components of the camera module 10. Therefore, the optical axis direction is not limited to the horizontal direction, and may be a vertical direction or an inclined direction intersecting the left-right direction and the up-down direction.

[0035] The spacer 24 is located between the lens 18 and the lens 22 on the optical axis K and is in contact with the lens 18 and the lens 22. That is, the spacer 24 maintains the distance between the lens 18 and the lens 22 on the optical axis K at a predetermined distance. The ring member 26 and the spacer 24 sandwich the lens 18, thereby limiting the displacement of the lens 18 in the direction along the optical axis K.

[0036] <Sensor substrate>

[0037] The sensor substrate 32 includes a substrate 34 provided with a wiring pattern (not shown) and an imaging element 36 mounted on the substrate 34. The substrate 34 has a quadrilateral shape when viewed from the front-back direction. The substrate 34 has a front surface 34A and a rear surface 34B arranged in the front-back direction. In addition, the outer peripheral portion of the front surface 34A is set as an edge portion 35. The edge portion 35 is fixed (bonded) to the rear surface 15A of the unit storage portion 15.

[0038] The imaging element 36 is fixed to the center of the front surface 34A in the vertical direction and the horizontal direction. The imaging element 36 is an example of a light receiving unit that receives light that has passed through the filter 62 described later. The imaging element 36 has an imaging surface 37 on which the light that has passed through the filter 62 is formed.

[0039] <Shutter unit>

[0040] like Figure 1 As shown, the shutter unit 40 includes a shutter mechanism 42 and a filter mounting structure 60. The shutter mechanism 42 is accommodated in a housing 72 of the filter mounting structure 60, which will be described later.

[0041] <<Shutter mechanism>>

[0042] like Figure 2 As shown, the shutter mechanism 42 has a blade pressing member 44. Figure 3 As shown in FIG. 4 , the shutter mechanism 42 includes a first blade 46, a second blade 47, and a partition plate 48. Figure 4 As shown, the shutter mechanism 42 includes a coil base 52 , a yoke 53 , a rotor magnet 54 , a lever blade 56 , and a link 58 .

[0043] like Figure 2 As shown, the blade pressing member 44 is a plate-shaped member having an opening 44A opened in the front-rear direction. The size and shape of the opening 44A are set to allow a required amount of light to be imaged on the imaging element 36 to pass through. The blade pressing member 44 is mounted on the front end of the housing 72 described later, and covers other components of the shutter mechanism 42 from the front side.

[0044] like Figure 3 As shown, relative to the blade pressing member 44 ( Figure 2 ) are provided at the rear side of the shutter unit 40. Specifically, the two first blades 46 and the two second blades 47 are respectively provided so as to be rotatable (movable) around a pin 49 extending in the front-rear direction. In the shutter unit 40, the two first blades 46 and the two second blades 47 reciprocate, thereby switching the light to reach the imaging element 36 ( Figure 2 )’s passing state and the shielding state where the light does not reach the imaging element 36.

[0045] A partition plate 48 is provided at the rear side of the two first blades 46 and the two second blades 47. The partition plate 48 divides the space in the housing 72 where the two first blades 46 and the two second blades 47 are provided and the space where the rod blade 56 (described later) is provided. Figure 4 ) etc. In addition, the partition plate 48 is provided with an opening portion 48A which is open in the front-rear direction.

[0046] Figure 4 The shutter unit 40 is shown as a partition plate 48 ( Figure 3 ) is removed. As an example, the coil base 52 is provided at the lower part of the housing 72. The coil base 52 is energized to the coil via wiring (not shown), thereby generating a magnetic field. The yoke 53 is provided on the coil base 52. The rotor magnet 54 is driven to rotate by the magnetic field generated by the coil base 52.

[0047] The rod blade 56 is a plate-like member having an L-shaped appearance when viewed from the front-back direction. A portion of the rod blade 56 is connected to the rotor magnet 54. Thus, when the rotor magnet 54 is driven to rotate, the rod blade 56 swings. The connecting rod 58 is connected to a portion of the rod blade 56. The connecting rod 58 transmits the force generated by the swing of the rod blade 56 to the first blade 46 ( Figure 3) and the second blade 47 ( Figure 3 ). In this way, as the rotor magnet 54 is driven to rotate, the first blade 46 and the second blade 47 rotate, thereby switching between light passing and light shielding in the shutter unit 40 .

[0048] <<Filter mounting structure>>

[0049] Figure 5 The filter mounting structure 60 shown is an example of an optical component mounting structure. The filter mounting structure 60 includes a filter 62, a pressing plate 64, a housing 72, and an applying portion 91 ( Figure 6 ).

[0050] < <Filter>>>

[0051] Figure 7 The filter 62 shown is an example of an optical component capable of transmitting light, and is configured as a flat glass filter. The filter 62 selectively absorbs light and transmits light of a predetermined wavelength range. The filter 62 has a substantially rectangular shape. The long side LS of the outer periphery of the filter 62 is along the left-right direction. The short side SS of the outer periphery of the filter 62 is along the up-down direction. The thickness of the filter 62 in the front-back direction is set to t1.

[0052] In addition, the filter 62 has an upper end surface 62A, a lower end surface 62B, a left end surface 62C, and a right end surface 62D. The upper end surface 62A and the lower end surface 62B are included in the long side portion LS. The left end surface 62C and the right end surface 62D are included in the short side portion SS. In addition, the front-to-back direction is an example of the thickness direction of the filter 62. The front side of the filter 62 is set as the surface 62E.

[0053] <<<Press plate>>>

[0054] As an example, the pressing plate 64 is made of sheet metal, and the thickness in the front-to-back direction is t2 (< t1). The pressing plate 64 can be elastically deformed in the front-to-back direction. In other words, the pressing plate 64 is a component that has elasticity and can press the filter 62 in the front-to-back direction. Specifically, the pressing plate 64 presses the filter 62 toward the housing 72. The surface at the rear end of the pressing plate 64 is referred to as the rear surface 64E ( Fig.10 ). The rear surface 64E is an example of a pressing surface. In addition, the surface located at the front end of the pressing plate 64 is referred to as a front surface 64F. The front surface 64F is an example of a surface on the opposite side of the pressing surface.

[0055] The pressing plate 64 is a frame member having a quadrilateral shape. As an example, the pressing plate 64 has a substantially rectangular shape. In the pressing plate 64, the length in the left-right direction is longer than the length in the up-down direction. The pressing plate 64 has an opening 65, fixing holes 66A, 66B, 66C, 66D, an outer peripheral portion 67, a through hole 68, and a through hole 69. The opening 65, the fixing holes 66A, 66B, 66C, 66D, the through hole 68, and the through hole 69 penetrate the pressing plate 64 in the front-to-back direction. The opening 65 has a shape that does not block the image formed on the camera surface 37 ( Figure 1 )’s size of light.

[0056] The pressing plate 64 includes an upper frame portion 64A, a lower frame portion 64B, a left frame portion 64C, and a right frame portion 64D. The upper frame portion 64A is located on the upper side relative to the opening portion 65. The lower frame portion 64B is located on the lower side relative to the opening portion 65. The upper frame portion 64A and the lower frame portion 64B are examples of two long sides. The left frame portion 64C is located on the left side relative to the opening portion 65. The right frame portion 64D is located on the right side relative to the opening portion 65. The left frame portion 64C and the right frame portion 64D are examples of two short sides.

[0057] The minimum width W1 of each of the upper frame portion 64A and the lower frame portion 64B in the vertical direction is smaller than the width W2 of each of the left frame portion 64C and the right frame portion 64D in the horizontal direction. In addition, the widths of the upper frame portion 64A, the lower frame portion 64B, the left frame portion 64C, and the right frame portion 64D may be the same or different.

[0058] The fixing hole 66A is provided at the upper part of the left frame part 64C. The fixing hole 66B is provided at the lower part of the left frame part 64C. The through hole 68 is provided at the central part of the left frame part 64C in the vertical direction. The through hole 68 is a long hole extending in the left-right direction. The fixing hole 66C is provided at the upper part of the right frame part 64D. The fixing hole 66D is provided at the lower part of the right frame part 64D. The through hole 69 is provided at the central part of the right frame part 64D in the vertical direction. In this way, through holes are provided in the left frame part 64C and the right frame part 64D, respectively.

[0059] When viewed from the thickness direction of the pressing plate 64, that is, the front-rear direction, the outer peripheral portion 67 includes arc portions 67A, 67B, 67C, and 67D. The arc portion 67A constitutes a portion of the periphery of the fixing hole 66A. The arc portion 67B constitutes a portion of the periphery of the fixing hole 66B. The arc portion 67C constitutes a portion of the periphery of the fixing hole 66C. The arc portion 67D constitutes a portion of the periphery of the fixing hole 66D.

[0060] In the following description, the left-right center of the pressing plate 64 is represented by M1 and the ends are represented by TA and TB, and the top-bottom center of the pressing plate 64 is represented by M2 and the ends are represented by TC and TD.

[0061] like Figure 5 As shown in FIG. 1 , the pressing plate 64 is located on the front side relative to the filter 62. Here, when the filter 62 and the pressing plate 64 are viewed from the front side, the upper frame portion 64A and the lower frame portion 64B are aligned with the long side portion LS ( Figure 7 ) overlap. The left frame portion 64C and the right frame portion 64D overlap with the short side portion SS ( Figure 7 ) overlap. In this way, the pressing plate 64 can press the filter 62 in the front-rear direction.

[0062] <<<Housing>>>

[0063] like Figure 6 and Figure 7 As shown, the housing 72 has a housing body 74. The housing body 74 is a box-shaped component that opens toward the front. A hole 75 that penetrates the housing body 74 in the front-to-back direction is provided at the center of the housing body 74 in the up-down direction and the left-to-right direction. As an example, when viewed from the front-to-back direction, the hole 75 has a width that is the same as the opening 65 ( Figure 7 The housing body 74 is provided with a storage portion 76 and a fixing portion 82.

[0064] <<<<Storage Section>>>>

[0065] As an example, the storage portion 76 is a step portion formed at the peripheral edge of the hole portion 75 in the housing body 74. The filter 62 ( Figure 7 ), and the rear end face 63 ( Figure 1 ). In addition, when viewed from the front, the portion of the housing body 74 that surrounds the storage portion 76 is the peripheral wall portion 77.

[0066] like Figure 7 As shown in FIG. 1 , the peripheral wall portion 77 has a bottom surface 78. As an example, the bottom surface 78 is a plane along the vertical direction and the horizontal direction. When the filter 62 is fixed to the storage portion 76, the bottom surface 78 is located around the filter 62. Figure 1 ) is provided at the left side of the bottom surface 78. The pin 79 protrudes forward from the center of the bottom surface 78 in the vertical direction. A pin 81 is provided on the right side of the bottom surface 78 relative to the optical axis K. The pin 81 protrudes forward from the center of the bottom surface 78 in the vertical direction. In this way, the columnar pin 79 and the pin 81 are provided in the housing 72.

[0067] like Figure 5As shown in the figure, when the filter 62 is stored in the storage portion 76, the pin 79 is inserted into the through hole 68. The pin 81 is inserted into the through hole 69. As a result, the rotation and sliding of the pressing plate 64 are restricted within the plane perpendicular to the front-back direction. That is, the pressing plate 64 is positioned by the pin 79 and the pin 81. The pin 79 is an example of a positioning portion that can be inserted into the through hole 68. The pin 81 is an example of a positioning portion that can be inserted into the through hole 69.

[0068] <<<<Fixed part>>>>

[0069] like Figure 6 As shown, the fixing portion 82 is provided on the peripheral wall portion 77. The fixing portion 82 is a fixing member for fixing the pressing plate 64 ( Figure 5 As an example, the fixing portion 82 includes pillar portions 83, 84, 85, and 86.

[0070] The pillars 83, 84, 85, 86 are axially arranged in the front-rear direction and extend forward from the bottom surface 78. As an example, the pillars 83, 84, 85, 86 are formed in a cylindrical shape. The outer diameters of the pillars 83, 84, 85, 86 are of the same size. Before the flange 87 described later is formed, the pillars 83, 84, 85, 86 can be inserted into the fixing holes 66A, 66B, 66C, 66D ( Figure 7 )middle.

[0071] The column 83 is located on the upper side relative to the pin 79. The column 84 is located on the lower side relative to the pin 79. The column 83 and the column 84 are arranged in the vertical direction. The column 85 is located on the upper side relative to the pin 81. The column 86 is located on the lower side relative to the pin 81. The column 85 and the column 86 are arranged in the vertical direction.

[0072] On the pressing plate 64 ( Figure 5 ) is in contact with the bottom surface 78, one axial end portion (front end portion) of the column portions 83, 84, 85, 86 is melted by a heating tool not shown. As a result, the front end portions of the column portions 83, 84, 85, 86 are each expanded in diameter to form a flange 87. That is, the flange 87 is an expanded diameter portion extending radially outward from the front end portions of the column portions 83, 84, 85, 86. In this way, the fixing portion 82 has the flange 87. Each flange 87 restricts the pressing plate 64 from moving forward. In other words, each flange 87 fixes the pressing plate 64 in the front-to-back direction.

[0073] <<<Application part>>>

[0074] like Figure 6 As shown in FIG. 1 , the applying portion 91 is provided at a position outside (on the opposite side of the optical axis K) the fixing portion 82 of the housing 72 in the oblique direction passing through the optical axis K. The applying portion 91 applies force to both end portions TA and TB of the pressing plate 64 in the left-right direction, so that the pressing plate 64 ( Figure 7) is closer to the filter 62 in the front-rear direction than the left-right end portions TA and TB. Figure 7 ). In addition, the applying portion 91 applies force to the two ends TC and TD in the vertical direction of the pressing plate 64 so that the central portion M2 in the vertical direction of the pressing plate 64 is closer to the filter 62 in the front-back direction than the two ends TC and TD in the vertical direction. As an example, the applying portion 91 has a supporting portion 92. The supporting portion 92 is provided on the peripheral wall portion 77 and supports the pressing plate 64 from the rear side.

[0075] like Figure 8 As shown, the support portion 92 has platforms 93, 94, 95, and 96. That is, as an example, the number of platforms is 4. When viewed from the front-back direction, the platforms 93, 94, 95, and 96 are respectively formed in an arc shape. The platform 93 is radially opposed to a portion of the outer peripheral surface of the column 83. The platform 94 is radially opposed to a portion of the outer peripheral surface of the column 84. The platform 95 is radially opposed to a portion of the outer peripheral surface of the column 85. The platform 96 is radially opposed to a portion of the outer peripheral surface of the column 86.

[0076] The table 93 supports the arc portion 67A of the pressing plate 64 from the rear side. The table 94 supports the arc portion 67B from the rear side. The table 95 supports the arc portion 67C from the rear side. The table 96 supports the arc portion 67D from the rear side. The tables 93, 94, 95, 96 are arranged asymmetrically with respect to the imaginary lines C1 and C2 perpendicular to the optical axis K. Specifically, with respect to the imaginary line C1, the table 93 and the table 94, and the table 95 and the table 96 are arranged asymmetrically, respectively. With respect to the imaginary line C2, the table 93 and the table 95, and the table 94 and the table 96 are arranged asymmetrically, respectively. In addition, in the up-down direction, the position of the table 95 is located at a lower side than the position of the table 93. In the up-down direction, the position of the table 96 is located at a lower side than the position of the table 94.

[0077] exist Fig.10 As an example, Figure 8 AA line section view. And, Fig.10 , an enlarged view of a portion including the platform 93 and the peripheral edge of the platform 93 is shown. Here, the platform 93 in the support portion 92 is described. The platform 93 (support portion 92) has a support surface 98 located at the front end. In the front-back direction, a first height h1 from the peripheral wall portion 77 to the support surface 98 is higher than a second height h2 from the peripheral wall portion 77 to the surface 62E of the filter 62.

[0078] [Function of the first embodiment]

[0079] The functions of the filter mounting structure 60 and the camera module 10 of the first embodiment will be described. In addition, regarding the pressing plate 64, the upper frame portion 64A and the lower frame portion 64B, and the left frame portion 64C and the right frame portion 64D have the same structure. Therefore, regarding the pressing plate 64, the upper frame portion 64A and the left frame portion 64C will be described, and the description of the lower frame portion 64B and the right frame portion 64D will be omitted.

[0080] exist Fig.10 , a portion of the filter mounting structure 60 including the upper frame portion 64A is shown. In the assembly process of the filter mounting structure 60, the filter 62 is stored in the storage portion 76 of the housing 72. The pressing plate 64 presses on the surface 62E of the filter 62 from the front side. At this time, the column portion 83 is inserted into the fixing hole 66A, and the column portion 85 is inserted into the fixing hole 66C. Then, the front end portion of the column portion 83 and the front end portion of the column portion 85 are expanded in diameter by melting caused by heating of a jig not shown in the figure. As a result, flanges 87 are formed on the column portion 83 and the column portion 85, respectively. The flange 87 becomes an anti-slip member in the front-to-back direction of the pressing plate 64, whereby the upper frame portion 64A is fixed to the housing 72.

[0081] Here, the right end of the upper frame portion 64A is located to the right (outside) of the flange 87 and has the freedom to deform in the front-rear direction. Therefore, when the right end of the upper frame portion 64A contacts the support surface 98, the right end of the upper frame portion 64A tends to deform toward the front side due to the reaction force indicated by the arrow F. In addition, the left end of the upper frame portion 64A also acts on the reaction force.

[0082] In the pressing plate 64, the right end and the left end of the upper frame portion 64A are respectively intended to deform toward the front side, and thus the portion between the pillar portions 84 and 85 (the central portion in the left-right direction) is intended to deform toward the rear side. Specifically, a bending moment indicated by an arrow M acts on the right end of the upper frame portion 64A. A bending moment in the opposite direction to the arrow M acts on the left end of the upper frame portion 64A. As a result, the central portion in the left-right direction of the upper frame portion 64A is bent in a manner closer to the filter 62 than the two end portions in the front-back direction, and the pressing plate 64 presses the filter 62 toward the rear side.

[0083] exist Fig.11 , a portion of the filter mounting structure 60 including the left frame portion 64C is shown. The pressing plate 64 is pressed against the surface 62E of the filter 62 from the front side. At this time, the column portion 83 is inserted into the fixing hole 66A, and the column portion 84 is inserted into the fixing hole 66B. Then, the front end portion of the column portion 83 and the front end portion of the column portion 84 are expanded in diameter by melting caused by heating of a jig not shown in the figure. As a result, flanges 87 are formed on the column portion 83 and the column portion 84, respectively. The flange 87 becomes an anti-slip member in the front-to-back direction of the pressing plate 64, whereby the left frame portion 64C is fixed to the housing 72.

[0084] Here, the upper end of the left frame portion 64C is located above (outside) the flange 87 and has a degree of freedom to deform. Therefore, when the upper end of the left frame portion 64C contacts the support surface 98, the upper end of the left frame portion 64C tends to deform toward the front side due to the reaction force indicated by the arrow F. In addition, the lower end of the left frame portion 64C also has a reaction force acting thereon.

[0085] In the pressing plate 64, the upper end and the lower end of the left frame portion 64C are each intended to deform toward the front side, and thus the portion between the pillar portion 83 and the pillar portion 84 (the central portion in the vertical direction) is intended to deform toward the rear side. Specifically, a bending moment indicated by an arrow M acts on the upper end of the left frame portion 64C. A bending moment in the opposite direction to the arrow M acts on the lower end of the left frame portion 64C. As a result, the central portion in the vertical direction of the left frame portion 64C is bent in a manner closer to the filter 62 than the two end portions in the front-rear direction, and the pressing plate 64 presses the filter 62 toward the rear side.

[0086] In addition, a through hole 69 is formed in the center of the left frame portion 64C in the vertical direction, but the contact area between the through hole 69 and the pin 79 is smaller than that of a structure in which the pin 79 is pressed into the through hole. Therefore, at the center of the pressing plate 64 in the vertical direction, the deflection toward the filter 62 is in a state where it is difficult to be suppressed by the contact with the pin 79.

[0087] Below, refer to Figures 1 to 8 as well as Fig.10 and Fig.11 , the functions of the filter mounting structure 60 and the camera module 10 are summarized.

[0088] In the filter mounting structure 60, the plate-shaped filter 62 is stored in the storage portion 76 of the housing 72. The pressing plate 64 is provided at the fixing portion 82, thereby pressing the filter 62 to the storage portion 76. Here, the applying portion 91 is provided at a position that is outside in the left-right direction and outside in the up-down direction relative to the fixing portion 82 of the housing 72. Moreover, the applying portion 91 applies a force to both end portions TA and TB so that the center portion M1 of the pressing plate 64 in the left-right direction is closer to the filter 62 in the front-back direction than the both end portions TA and TB in the left-right direction. Furthermore, the applying portion 91 applies a force to both end portions TC and TD so that the center portion M2 in the up-down direction is closer to the filter 62 in the front-back direction than the both end portions TC and TD in the up-down direction.

[0089] The central portion of the elastically deformable pressing plate 64 is bent in the front-rear direction so as to be closer to the filter 62 than both ends of the pressing plate 64 in the left-right direction and the up-down direction. As a result, the contact area between the pressing plate 64 and the filter 62 is increased, and the filter 62 is pressed toward the storage portion 76. In this way, the central portion of the pressing plate 64 in the left-right direction and the central portion in the up-down direction can be suppressed from being separated from the filter 62, so that the positional deviation of the filter 62 relative to the housing 72 can be suppressed.

[0090] In the filter mounting structure 60, the applying portion 91 is formed by providing the supporting portion 92 having the supporting surface 98 whose position in the thickness direction (front-back direction) is predetermined on the peripheral wall portion 77 of the housing 72. Specifically, the applying portion 91 is formed so that the first height h1 is higher than the second height h2. Thus, compared with the case where the applying portion 91 is formed using a member other than the housing 72, the edge of the pressing plate 64 can be warped with a simple structure.

[0091] In the filter mounting structure 60, since the pressing plate 64 has the arc portions 67A, 67B, 67C, and 67D, the force for bending the pressing plate 64 acts on four locations of the edge of the pressing plate 64. Thus, the pressing plate 64 is easily bent compared to a structure in which the pressing plate 64 is supported by the support portion 92 at one location. Furthermore, since the pressing plate 64 is supported at four locations, the posture of the pressing plate 64 is easily stabilized.

[0092] The position of the pressing plate 64 relative to the pins 79 and 81 is determined by inserting the columnar pins 79 and 81 into the through holes 69 and 68. In addition, in the state before the applying portion 91 applies force to the pressing plate 64, it is considered that the deflection amount generated at the central portion of the pressing plate 64 in the left-right direction and the upper-lower direction is greater in the long side LS with a long fulcrum interval than in the short side SS with a short fulcrum interval. Here, in the filter mounting structure 60, the pins 79 and 81 position the pressing plate 64 on the short side SS side, so it is difficult for the pins 79 and 81 to apply force to the long side LS. That is, the pins 79 and 81 are difficult to suppress the force of the applying portion 91 acting on the long side LS, so it is possible to suppress the pressing force of the pressing plate 64 on the filter 62 from decreasing.

[0093] In the filter mounting structure 60, when viewed from the thickness direction (front-back direction), the platforms 93, 94, 95, 96 are arranged asymmetrically with respect to the center position (optical axis K) of the pressing plate 64. Thus, the arrangement of the platforms 93, 94, 95, 96 does not need to be symmetrical with respect to the arrangement of the various parts of the housing 72, so the degree of freedom of the layout of the various parts of the housing 72 is increased.

[0094] In the camera module 10, the pressing plate 64 appropriately presses the filter 62, thereby suppressing the positional deviation and tilt of the filter 62 relative to the design center. This can prevent the amount of light passing through the filter 62 and entering the imaging element 36 from being less than a set amount.

[0095] [Modification of the first embodiment]

[0096] exist Fig. 9 In the filter mounting structure 60 ( Figure 8 ) is a modified example of a filter mounting structure 100. The filter mounting structure 100 is provided in the camera module 10 ( Figure 1 ) is provided in place of the filter mounting structure 60. In addition, for the same structure as the camera module 10, the same reference numerals as the camera module 10 are attached and the description thereof is omitted.

[0097] The filter mounting structure 100 includes a filter 62, a pressing plate 102, a housing 72, and an applying portion 106. The pressing plate 102 is formed into a substantially rectangular shape with the left-right direction as the long side and the up-down direction as the short side. The pressing plate 102 has an outer peripheral portion 103 including four arc portions 104. The four arc portions 104 have the same radius of curvature when viewed from the front-back direction. That is, the four arc portions 104 are provided on the pressing plate 102 in a manner symmetrical in the up-down direction and the left-right direction.

[0098] The applying portion 106 has a supporting portion 108 provided on the peripheral wall portion 77 and supporting the pressing plate 102. The supporting portion 108 has platforms 109A, 109B, 109C, and 109D. The platforms 109A, 109B, 109C, and 109D are arranged symmetrically with respect to the imaginary lines C1 and C2. Specifically, with respect to the imaginary line C1, the platforms 109A and 109B, and the platforms 109C and 109D are arranged symmetrically with respect to each other. With respect to the imaginary line C2, the platforms 109A and 109C, and the platforms 109B and 109D are arranged symmetrically with each other. In other words, as an example, the platforms 109A, 109B, 109C, and 109D have the same outer shape and the same size.

[0099] In the filter mounting structure 100, the four arc portions 104 are supported by the platforms 109A, 109B, 109C, and 109D and receive a reaction force. Therefore, the pressing plate 102 is bent in such a manner that the central portion in the left-right direction and the central portion in the up-down direction of the pressing plate 102 are directed toward the filter 62. Here, when viewed from the thickness direction, the platforms 109A, 109B, 109C, and 109D are symmetrically arranged with respect to the central position of the pressing plate 102. Thus, compared with a structure in which a plurality of platforms are arranged asymmetrically, it is easy to press each portion of the pressing plate 102 with an equal force.

[0100] [Configurations of the Second Embodiment]

[0101] Fig.12 FIG. 2 shows a part of the filter mounting structure 110 according to the second embodiment. The filter mounting structure 110 is provided in the camera module 10 ( Figure 1 ) in place of the filter mounting structure 60 ( Figure 1 ) is provided. In addition, for the structure and elements that are the same or substantially the same as the filter mounting structure 60, the same reference numerals are marked and the description is omitted.

[0102] <<Filter mounting structure>>

[0103] The filter mounting structure 110 includes a filter 62, a pressing plate 112 for pressing the filter 62, a housing 72 for housing the filter 62, and a force applying portion 114 for applying a force to the edge of the pressing plate 112. The filter mounting structure 110 has the same structure in each column. Therefore, regarding the filter mounting structure 110, the structure of the peripheral portion of the column 83 is illustrated and described, and the description of other parts is omitted.

[0104] <<<Press plate>>>

[0105] As an example, the pressing plate 112 has a Figure 1 ) The same shape. In addition, the pressing plate 112 is an iron plate that can be elastically deformed and has magnetism.

[0106] <<<Application part>>>

[0107] The applying portion 114 is provided at a position outside the fixing portion 82 of the housing 72 in the left-right direction and the up-down direction. The applying portion 114 includes a mounting wall 115 and a magnet 118 fixed to the mounting wall 115. The mounting wall 115 includes a wall portion 115A extending forward from the peripheral wall portion 77 and an extension portion 115B extending downward from the wall portion 115A. The extension portion 115B is provided with an opposing surface 116 opposing the peripheral wall portion 77 in the front-back direction.

[0108] The magnet 118 is formed in a rectangular parallelepiped shape and includes a front surface 118A and a rear surface 118B. The front surface 118A is bonded to the facing surface 116. The rear surface 118B is arranged at a distance from the vertical end of the pressing plate 112 in the front-to-back direction. The magnet 118 attracts the edge of the pressing plate 112 forward by magnetic force.

[0109] [Function of the second embodiment]

[0110] The operation of the filter mounting structure 110 according to the second embodiment will be described.

[0111] exist Fig.12In the filter mounting structure 110 shown, the filter 62 is pressed against the storage portion 76 by setting the pressing plate 112 on the fixing portion 82. Here, the applying portion 114 is provided at a position outside the fixing portion 82 of the housing 72 in the left-right direction and the up-down direction. Furthermore, the applying portion 114 applies a force (tensile force) to the edge of the pressing plate 112, so that the edge of the pressing plate 112 is warped to the side away from the peripheral wall portion 77.

[0112] The central portion in the left-right direction and the central portion in the up-down direction of the elastically deformable pressing plate 112 are bent toward the filter 62 side by the edge of the pressing plate 112 being warped toward the side away from the peripheral wall portion 77. In addition, the contact area between the pressing plate 112 and the filter 62 is increased, and the filter 62 is pressed toward the storage portion 76. In this way, the central portion in the left-right direction and the central portion in the up-down direction of the edge of the pressing plate 112 can be suppressed from being bent toward the side away from the filter 62, and thus the positional deviation of the filter 62 relative to the housing 72 can be suppressed.

[0113] Furthermore, in the filter mounting structure 110, the magnitude of the magnetic force acting on the pressing plate 112 can be changed by replacing the magnet 118. Specifically, by replacing the magnet 118, the magnitude of the magnetic force acting on the pressing plate 112 is changed, and the warping amount of the edge of the pressing plate 112 is changed. Thus, when the central portion of the pressing plate 112 in the left-right direction and the central portion in the up-down direction are bent toward the filter 62, the design change (replacement) of the housing 72 does not need to be performed, so it is easy to manage the warping amount of the pressing plate 112 within an appropriate range.

[0114] (Variation Example)

[0115] Hereinafter, a modification of the first and second embodiments will be described. In addition, the same reference numerals are given to the same or similar components as those in the first and second embodiments, and the description thereof will be omitted.

[0116] exist Fig.13 In the example, as the filter mounting structure 100 ( Fig. 9 ) shows a modification of the filter mounting structure 120. The filter mounting structure 120 includes the filter 62, a pressing plate 122 for pressing the filter 62, a housing 72, and an applying portion 126 for applying a force to the edge of the pressing plate 122.

[0117] The pressing plate 122 is formed into a rectangular shape with the left-right direction as the long side and the up-down direction as the short side. The pressing plate 122 has an outer peripheral portion 123 including four corners 124. The angles of the four corners 124 are all the same at 90 degrees. That is, the four corners 124 are provided on the pressing plate 122 in a line-symmetric manner with respect to the imaginary lines C1 and C2 in the up-down direction and the left-right direction.

[0118] The applying portion 126 includes a support portion 128 provided on the peripheral wall portion 77 and supporting the pressing plate 122. The support portion 128 includes platforms 129A, 129B, 129C, and 129D. The platforms 129A, 129B, 129C, and 129D are arranged symmetrically with respect to the imaginary lines C1 and C2. In addition, as an example, the outer shapes of the platforms 129A, 129B, 129C, and 129D are the same L-shaped and have the same size.

[0119] In the filter mounting structure 120, the four corners 124 are supported by the bases 129A, 129B, 129C, and 129D, and thus receive a reaction force. Therefore, the pressing plate 122 is bent in such a manner that the central portion M1 in the left-right direction and the central portion M2 in the up-down direction of the pressing plate 122 are directed toward the filter 62. Here, the bases 129A, 129B, 129C, and 129D are arranged symmetrically with respect to the imaginary lines C1 and C2. Thus, it is easier to press each portion of the pressing plate 122 with an equal force than in a structure in which a plurality of bases are arranged asymmetrically.

[0120] <Other Modifications>

[0121] The present invention is not limited to the above-described embodiments and modifications, and various modifications such as combination are possible without departing from the gist of the invention.

[0122] In the filter mounting structure 60, the fixing portion 82 may also serve as a positioning portion of the pressing plate 64. The shape of the positioning portion is not limited to a columnar shape such as a pin, but may be a groove shape. In addition, the fixing portion is not limited to a flange 87 formed by melting the front end portion using a jig as in the fixing portion 82, but may be a screw. That is, the pressing plate 64 may also be fixed by the head of the screw.

[0123] The imaginary lines C1 and C2 are not limited to being perpendicular to the optical axis K, and may be imaginary lines forming an angle other than 90° with the optical axis K.

[0124] The optical component is not limited to the filter 62 that selectively transmits light, and may be a transparent component such as a glass plate or an acrylic plate that transmits light.

[0125] The pressing plate is not limited to having a rectangular shape like the pressing plate 122. It may also be a structure in which at least one of a set of short sides SS and a set of long sides LS has a different length. For example, the pressing plate may also have a trapezoidal shape. The pressing plate may also have a polygonal shape with more than 5 arcs or more than 5 corners. The pressing plate may also have a shape in which a plurality of corners and a plurality of arcs are mixed.

[0126] Alternatively, when viewed from the thickness direction of the pressing plate, the plurality of platforms may be symmetrically arranged only in the vertical direction relative to the central position of the pressing plate, or may be symmetrically arranged only in the horizontal direction. Alternatively, a first magnet may be provided at the end of the pressing plate, and the plurality of platforms may be formed by a second magnet, so that the central portion of the pressing plate is bent by the repulsive force between the first magnet and the second magnet.

[0127] In addition, the number of the positioning parts for positioning the pressing plate and the applying parts for applying force to the two ends of the pressing plate in the second direction is not limited to the above-mentioned number, and can be any number respectively. In addition, the number of arc parts and corner parts of the pressing plate can be any number respectively. In addition, the combination of the number of the positioning parts, applying parts, arc parts or corner parts can also be a number different from the combination of the number mentioned above.

[0128] The optical device is not limited to a device that performs imaging like the camera module 10 , and may be, for example, a measuring device that measures the amount of light.

[0129] In addition, the present technology can adopt the following structures.

[0130] (1) An optical component mounting structure, comprising: an optical component capable of transmitting light; a pressing plate capable of elastic deformation for pressing the optical component in a first direction; a housing having a storage portion for storing the optical component and a fixing portion provided on a peripheral wall portion surrounding the storage portion and fixing the pressing plate; and an applying portion provided at an outer side of the fixing portion of the housing in a second direction intersecting the first direction, for applying a force to both end portions of the pressing plate in the second direction, so that the central portion of the pressing plate in the second direction is closer to the optical component in the first direction than the both end portions in the second direction.

[0131] (2) An optical component mounting structure according to (1), wherein the applying portion has a supporting portion arranged on the peripheral wall portion, the supporting portion supports the pressing plate, and in the first direction, a first height from the peripheral wall portion to a supporting surface of the supporting portion is higher than a second height from the peripheral wall portion to the surface of the optical component.

[0132] (3) An optical component mounting structure according to (2), wherein the pressing plate has an outer peripheral portion including a plurality of corner portions or a plurality of arc portions when viewed from the first direction, and the supporting portion has a plurality of platform portions that support the plurality of corner portions or the plurality of arc portions.

[0133] (4) The optical component mounting structure according to (3), wherein the pressing plate has a quadrilateral outer shape, and the number of the plurality of stages is four.

[0134] (5) An optical component mounting structure according to any one of (1) to (4), wherein the pressing plate has two short sides and two long sides, through holes are respectively provided in the two short sides, and a columnar positioning portion that can be inserted into the through holes is provided in the peripheral wall portion.

[0135] (6) The optical component mounting structure according to (4) or (5), wherein the plurality of stage portions are arranged line-symmetrically with respect to an imaginary line intersecting an optical axis of the optical component.

[0136] (7) The optical component mounting structure according to any one of (3) to (5), wherein the plurality of stage portions are arranged asymmetrically with respect to an imaginary line intersecting an optical axis of the optical component.

[0137] (8) The optical component mounting structure according to any one of (1) to (7), wherein the pressing plate has magnetism, and the applying portion has a magnet that attracts the pressing plate using a magnetic force.

[0138] (9) An optical device comprising: the optical component mounting structure according to any one of (1) to (8); and a light receiving unit that receives light that has passed through the optical component.

Claims

1. An optical component mounting structure, comprising: Optical components capable of transmitting light; A pressing plate capable of elastic deformation to press the optical component in a first direction; a housing having a housing portion for housing the optical component and a fixing portion provided on a peripheral wall portion surrounding the housing portion and fixing the pressing plate; and An applying portion is arranged at a position outside the fixing portion of the shell in a second direction intersecting the first direction, and applies force to both end portions of the pressing plate in the second direction so that the central portion of the pressing plate in the second direction is closer to the optical component in the first direction than the both end portions in the second direction.

2. The optical component mounting structure according to claim 1, wherein: The applying portion includes a supporting portion provided on the peripheral wall portion, the supporting portion supporting the pressing plate, In the first direction, a first height from the peripheral wall portion to the support surface of the support portion is higher than a second height from the peripheral wall portion to the surface of the optical component.

3. The optical component mounting structure according to claim 2, wherein: The pressing plate has an outer peripheral portion including a plurality of corner portions or a plurality of arc portions when viewed from the first direction, The support portion includes a plurality of platform portions that support the plurality of corner portions or the plurality of arc portions.

4. The optical component mounting structure according to claim 3, wherein: The pressing plate has a quadrilateral shape. The number of the plurality of stages is four.

5. The optical component mounting structure according to claim 4, wherein: The pressing plate has two short sides and two long sides. Through holes are respectively provided on the two short sides. The peripheral wall portion is provided with a columnar positioning portion that can be inserted into the through hole.

6. The optical component mounting structure according to claim 4, wherein: The plurality of stage portions are arranged line-symmetrically with respect to an imaginary line intersecting an optical axis of the optical component.

7. The optical component mounting structure according to claim 3, wherein: The plurality of stage portions are arranged asymmetrically with respect to an imaginary line intersecting an optical axis of the optical component.

8. The optical component mounting structure according to claim 1, wherein: The pressing plate has magnetic properties. The applying portion includes a magnet for attracting the pressing plate using a magnetic force.

9. An optical device comprising: The optical component mounting structure according to any one of claims 1 to 8; and The light receiving unit receives the light having passed through the optical component.

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