TWI536823B - Image capturing device - Google Patents
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- TWI536823B TWI536823B TW103131617A TW103131617A TWI536823B TW I536823 B TWI536823 B TW I536823B TW 103131617 A TW103131617 A TW 103131617A TW 103131617 A TW103131617 A TW 103131617A TW I536823 B TWI536823 B TW I536823B
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Description
本發明是有關於一種影像擷取裝置，特別是指一種具有複數個反射鏡的影像擷取裝置。 The invention relates to an image capturing device, in particular to an image capturing device having a plurality of mirrors.
目前一般的數位相機模組具有用於接收光線的透鏡，及用於感測光線的影像感測器(或稱感光元件)。常見的影像感測器分為感光耦合元件(charge-coupled device；CCD)和互補式金屬氧化物半導體主動像素感測器(CMOS Active pixel sensor)兩種。 At present, a general digital camera module has a lens for receiving light, and an image sensor (or a photosensitive element) for sensing light. Common image sensors are classified into a charge-coupled device (CCD) and a complementary CMOS active pixel sensor.
提高相機模組所取得的影像的視野寬度是相關業者致力於研發的目標。本發明進一步要探討的主題也在於此。 Increasing the field of view of the image obtained by the camera module is a goal that the relevant industry is committed to. The subject matter to be further explored by the present invention is also here.
因此，本發明之目的，即在提供一種能增加影像視野的影像擷取裝置。 Accordingly, it is an object of the present invention to provide an image capture device that increases the field of view of an image.
於是，本發明影像擷取裝置，包含一鏡片組及一影像感測器。該鏡片組包括一主透鏡、一第一反射鏡及一第二反射鏡。該第一反射鏡具有一用於接收經由該主透鏡進入該影像擷取裝置的光線之第一反射面。該第二反射 鏡具有一用於接收該第一反射面所反射的光線之第二反射面。該影像感測器用於接收並感測該第二反射面所反射的光線。其中，該第二反射面與該第一反射面彼此不平行且不垂直。 Thus, the image capturing device of the present invention comprises a lens group and an image sensor. The lens set includes a main lens, a first mirror and a second mirror. The first mirror has a first reflecting surface for receiving light entering the image capturing device via the main lens. The second reflection The mirror has a second reflecting surface for receiving light reflected by the first reflecting surface. The image sensor is configured to receive and sense light reflected by the second reflective surface. The second reflective surface and the first reflective surface are not parallel to each other and are not perpendicular.
較佳地，該第二反射面與該第一反射面之夾角角度大於0度並小於等於15度。 Preferably, the angle between the second reflecting surface and the first reflecting surface is greater than 0 degrees and less than or equal to 15 degrees.
較佳地，該鏡片組還包括一修正像差透鏡，該修正像差透鏡用於修正光線通過該主透鏡時所產生的像差。更佳地，該修正像差透鏡位於該第一反射鏡與該第二反射鏡之間，並供該第一反射面所反射的光線通過。更佳地，該影像感測器定義出一平面，該第二反射面與該平面夾45度，該修正像差透鏡的軸向平行於該平面，該第一反射面與該平面所夾的角度小於45度。或者，該第一反射面與該平面所夾的角度大於45度。更佳地，該第一反射面與該平面所夾的角度介於30度到60度之間。 Preferably, the lens set further comprises a modified aberration lens for correcting aberrations generated when light passes through the main lens. More preferably, the modified aberration lens is located between the first mirror and the second mirror, and the light reflected by the first reflecting surface passes. More preferably, the image sensor defines a plane, the second reflecting surface is 45 degrees with the plane, the axial direction of the modified aberration lens is parallel to the plane, and the first reflecting surface is sandwiched by the plane The angle is less than 45 degrees. Alternatively, the angle between the first reflecting surface and the plane is greater than 45 degrees. More preferably, the angle between the first reflecting surface and the plane is between 30 degrees and 60 degrees.
較佳地，所述的影像擷取裝置包含複數個鏡片組。 Preferably, the image capturing device comprises a plurality of lens groups.
本發明之功效在於藉由該第二反射面與該第一反射面彼此不平行且不垂直，使影像感測器能感測到視野較廣的影像，此外，藉由該修正像差透鏡還能有效對通過該主透鏡的光線進行像差修正。 The effect of the invention is that the second reflective surface and the first reflective surface are not parallel to each other and are not perpendicular, so that the image sensor can sense a wide field of view image, and further, the modified aberration lens is further The aberration correction can be effectively performed on the light passing through the main lens.
100‧‧‧影像擷取裝置 100‧‧‧Image capture device
1、1a、1b‧‧‧鏡片組 1, 1a, 1b‧‧‧ lens group
11‧‧‧主透鏡 11‧‧‧Main lens
12‧‧‧第一反射鏡 12‧‧‧First mirror
121‧‧‧第一反射面 121‧‧‧First reflecting surface
13‧‧‧第二反射鏡 13‧‧‧second mirror
131‧‧‧第二反射面 131‧‧‧Second reflective surface
14‧‧‧修正像差透鏡 14‧‧‧Corrected aberration lens
2‧‧‧影像感測器 2‧‧‧Image sensor
3、3’、4、4’、5‧‧‧影像 3, 3', 4, 4', 5‧ ‧ images
31、32、33、34‧‧‧物體 31, 32, 33, 34 ‧ ‧ objects
P‧‧‧平面 P‧‧‧ plane
θ1、θ2、θ1’、θ2’‧‧‧夾角 θ 1 , θ 2 , θ 1 ', θ 2 '‧‧‧ angle
A‧‧‧軸向 A‧‧‧Axial
本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中： 圖1是本發明影像擷取裝置的第一實施例的一示意圖；圖2是一示意圖，說明該第一實施例拍攝複數個物體；圖3是該第一實施例所擷取的影像的一示意圖；圖4是一影像示意圖，說明改變該第一實施例的一第一反射鏡及一第二反射鏡之配置後所擷取到的影像；圖5是本發明影像擷取裝置的第二實施例的一示意圖；圖6是該第二實施例所擷取的影像的一示意圖；圖7是一影像示意圖，說明圖5之影像經過影像處理過後所獲得的影像；圖8是本發明影像擷取裝置的第三實施例的一示意圖；及圖9是該第三實施例所擷取的影像的一示意圖。 Other features and effects of the present invention will be apparent from the embodiments of the drawings, in which: 1 is a schematic view of a first embodiment of an image capturing device of the present invention; FIG. 2 is a schematic view showing the first embodiment for capturing a plurality of objects; FIG. 3 is a view of the image captured by the first embodiment. FIG. 4 is a schematic diagram showing an image captured by changing the arrangement of a first mirror and a second mirror of the first embodiment; FIG. 5 is a second view of the image capturing device of the present invention; FIG. 6 is a schematic diagram of an image captured by the second embodiment; FIG. 7 is a schematic diagram showing an image obtained by image processing of the image of FIG. 5; FIG. 8 is an image of the present invention; A schematic diagram of a third embodiment of the capture device; and FIG. 9 is a schematic diagram of an image captured by the third embodiment.
在本發明被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。 Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.
參閱圖1，本發明影像擷取裝置100之第一實施例包含一鏡片組1及一影像感測器2。影像感測器2定義出一平面P。 Referring to FIG. 1, a first embodiment of the image capturing device 100 of the present invention includes a lens group 1 and an image sensor 2. The image sensor 2 defines a plane P.
鏡片組1包括一主透鏡11、一第一反射鏡12、一第二反射鏡13及一修正像差透鏡14。第一反射鏡12具有一第一反射面121，第一反射面121用於接收經由主透鏡11進入影像擷取裝置100的光線。修正像差透鏡14用於修正光線通過主透鏡11時所產生的像差，在本實施例中，修正像差透鏡14位於第一反射鏡12與第二反射鏡13 之間，並供第一反射面121所反射的光線通過。第二反射鏡13具有一第二反射面131，第二反射面131用於接收第一反射面121所反射並通過修正像差透鏡14的光線。第二反射面131與第一反射面121彼此不平行且不垂直。第二反射面131與第一反射面121之夾角角度以大於0度並小於等於15度為佳。在本實施例中，第二反射面131與平面P之間的夾角θ2為45度，因此，第一反射面121與平面P之間的夾角θ1以30度~60度為佳。另外，本實施例的修正像差透鏡14的軸向A平行於平面P，第一反射面121與平面P之間的夾角θ1為35度(小於45度)，也就是說，第二反射面131與第一反射面121之夾角角度為10度。 The lens group 1 includes a main lens 11, a first mirror 12, a second mirror 13, and a modified aberration lens 14. The first mirror 12 has a first reflecting surface 121 for receiving light entering the image capturing device 100 via the main lens 11. The aberration lens 14 is used to correct the aberration generated when the light passes through the main lens 11. In the present embodiment, the correction aberration lens 14 is located between the first mirror 12 and the second mirror 13, and is provided for the first The light reflected by the reflecting surface 121 passes. The second mirror 13 has a second reflecting surface 131 for receiving the light reflected by the first reflecting surface 121 and passing through the aberration lens 14 . The second reflecting surface 131 and the first reflecting surface 121 are not parallel to each other and are not perpendicular. The angle between the second reflecting surface 131 and the first reflecting surface 121 is preferably greater than 0 degrees and less than or equal to 15 degrees. In the present embodiment, the angle θ between the second reflecting surface 131 and the plane P 2 is 45 degrees, the angle θ between the first reflecting surface 121 and the plane P 1 of 30 to 60 degrees preferred. In addition, the axial direction A of the modified aberration lens 14 of the present embodiment is parallel to the plane P, and the angle θ 1 between the first reflective surface 121 and the plane P is 35 degrees (less than 45 degrees), that is, the second reflection The angle between the face 131 and the first reflecting surface 121 is 10 degrees.
影像感測器2用於接收並感測第二反射面131所反射的光線。影像感測器2可以是感光耦合元件或互補式金屬氧化物半導體主動像素感測器。圖1所繪示之箭頭係用於示意光線的路徑。 The image sensor 2 is configured to receive and sense the light reflected by the second reflective surface 131. The image sensor 2 may be a photosensitive coupling element or a complementary metal oxide semiconductor active pixel sensor. The arrows depicted in Figure 1 are used to illustrate the path of light.
參閱圖2，當影像擷取裝置100用來拍攝複數個物體31、32、33、34，影像感測器2能擷取到如圖3所示的影像3，其中，影像3的內容包含了物體31、32、33。 Referring to FIG. 2, when the image capturing device 100 is used to capture a plurality of objects 31, 32, 33, and 34, the image sensor 2 can capture the image 3 as shown in FIG. 3, wherein the content of the image 3 includes Objects 31, 32, 33.
圖4所示之影像3’，是在將第一實施例的第一反射鏡12調整為其第一反射面121平行於第二反射面131的情況下，影像感測器2的擷取結果。比較圖4及圖3，圖4的影像3’較圖3的影像3少拍攝了物體31。也就是說，圖4的影像3’之視野較圖3的影像3之視野窄。換句話說， 第一實施例藉由第二反射面131與第一反射面121彼此不平行且不垂直的結構設計，確實能有效增加影像擷取的視野寬度。 The image 3' shown in FIG. 4 is a result of capturing the image sensor 2 in the case where the first mirror 12 of the first embodiment is adjusted such that the first reflecting surface 121 is parallel to the second reflecting surface 131. . Comparing Fig. 4 with Fig. 3, the image 3' of Fig. 4 photographs the object 31 less than the image 3 of Fig. 3. That is, the field of view of the image 3' of Fig. 4 is narrower than the field of view of the image 3 of Fig. 3. in other words, The first embodiment is designed such that the second reflecting surface 131 and the first reflecting surface 121 are not parallel to each other and are not perpendicular to each other, and the field of view width of the image capturing can be effectively increased.
參閱圖5，本發明影像擷取裝置100之第二實施例與第一實施例相近，第二實施例與第一實施例主要的差異在於第二實施例的影像擷取裝置100包含兩個鏡片組1a、1b。較佳地，如本實施例中，鏡片組1b的第一反射面121與平面P之間的夾角θ1’與鏡片組1a的第一反射面121與平面P之間的夾角θ1相同，且鏡片組1b的第二反射面131與平面P之間的夾角θ2’與鏡片組1a的第二反射面131與平面P之間的夾角θ2相同，即θ1=θ1’，且θ2=θ2’，但不以此為限，即θ1可以不等於θ1’，θ2可以不等於θ2’。 Referring to FIG. 5, the second embodiment of the image capturing device 100 of the present invention is similar to the first embodiment. The main difference between the second embodiment and the first embodiment is that the image capturing device 100 of the second embodiment includes two lenses. Groups 1a, 1b. Preferably, in the present embodiment, the angle θ 1 ' between the first reflecting surface 121 of the lens group 1b and the plane P is the same as the angle θ 1 between the first reflecting surface 121 of the lens group 1a and the plane P, And the angle θ 2 ' between the second reflecting surface 131 of the lens group 1b and the plane P is the same as the angle θ 2 between the second reflecting surface 131 of the lens group 1a and the plane P, that is, θ 1 = θ 1 ', and θ 2 = θ 2 ', but not limited thereto, that is, θ 1 may not be equal to θ 1 ', and θ 2 may not be equal to θ 2 '.
本實施例的影像感測器2所感測到的結果如圖6的影像4所示。影像4的左半部是經由鏡片組1a所擷取的影像，其包含物體31、32、33，影像4的右半部是經由鏡片組1b所擷取的影像，其包含物體32、33、34。圖6所示的影像4能經由影像擷取裝置100的一影像處理單元(圖未示)處理(例如使用影像拼接(Image Stitching)技術)，而產生如圖7所示的影像4’，其包含物件31、32、33、34。本實施例藉由兩個鏡片組1a、1b的結構配置能進一步增加影像擷取的視野寬度。 The result sensed by the image sensor 2 of the present embodiment is as shown in the image 4 of FIG. The left half of the image 4 is an image captured by the lens group 1a, and includes objects 31, 32, 33. The right half of the image 4 is an image captured by the lens group 1b, which includes objects 32, 33, 34. The image 4 shown in FIG. 6 can be processed by an image processing unit (not shown) of the image capturing device 100 (for example, using Image Stitching technology) to generate an image 4' as shown in FIG. Objects 31, 32, 33, 34 are included. In this embodiment, the configuration of the two lens groups 1a, 1b can further increase the field of view width of the image capture.
參閱圖8，本發明影像擷取裝置100之第三實施例與第二實施例相近，第三實施例與第二實施例主要的差異在於第三實施例的第一反射鏡12之配置與第二實施例 不同。在本實施例中，第一反射面121與平面P之間的夾角θ1為55度(大於45度)，第二反射面131與第一反射面121之夾角角度為10度。 Referring to FIG. 8, the third embodiment of the image capturing device 100 of the present invention is similar to the second embodiment. The main difference between the third embodiment and the second embodiment lies in the configuration and the first embodiment of the first mirror 12 of the third embodiment. The second embodiment is different. In the present embodiment, the angle θ 1 between the first reflecting surface 121 and the plane P is 55 degrees (more than 45 degrees), and the angle between the second reflecting surface 131 and the first reflecting surface 121 is 10 degrees.
本實施例的影像感測器2所感測到的結果如圖9的影像5所示。影像5的左半部是經由鏡片組1a所擷取的影像，其包含物體32、33、34，影像5的右半部是經由鏡片組1b所擷取的影像，其包含物體31、32、33。由於第一反射面121與平面P之間的夾角θ1大於45度，影像5的左半部的內容及右半部的內容與第二實施例的影像4(見於圖6)相反。但與第二實施例相似地，圖9所示的影像5能經由影像擷取裝置100的影像處理單元處理，而產生如圖7所示的影像4’。本實施例的視野寬度與第二實施例相同。 The result sensed by the image sensor 2 of the present embodiment is as shown in the image 5 of FIG. The left half of the image 5 is an image captured by the lens group 1a, and includes objects 32, 33, 34. The right half of the image 5 is an image captured by the lens group 1b, which includes objects 31, 32, 33. Since the angle θ 1 between the first reflecting surface 121 and the plane P is larger than 45 degrees, the content of the left half of the image 5 and the content of the right half are opposite to those of the image 4 of the second embodiment (see FIG. 6). However, similarly to the second embodiment, the image 5 shown in FIG. 9 can be processed by the image processing unit of the image capturing device 100 to produce an image 4' as shown in FIG. The field of view width of this embodiment is the same as that of the second embodiment.
補充說明的是，影像擷取裝置100還可包含用於調整第一反射鏡12及/或第二反射鏡13之傾斜角度的機構(圖未示)，以供使用者能藉由調整第一反射鏡12及/或第二反射鏡13之傾斜角度而調整視野寬度。 It is to be noted that the image capturing device 100 may further include a mechanism (not shown) for adjusting the tilt angle of the first mirror 12 and/or the second mirror 13 for the user to adjust the first The viewing angle is adjusted by the inclination angle of the mirror 12 and/or the second mirror 13.
綜上所述，本發明影像擷取裝置100藉由第二反射面131與第一反射面121彼此不平行且不垂直，使影像感測器2能感測到視野較廣的影像，再者，透過兩組鏡片組1a、1b的配置，還能進一步增加視野的寬度，此外，藉由修正像差透鏡14還能有效對通過主透鏡11的光線進行像差修正，故確實能達成本發明之目的。 In summary, the image capturing device 100 of the present invention can prevent the image sensor 2 from sensing a wide field of view by the second reflecting surface 131 and the first reflecting surface 121 being non-parallel and not perpendicular to each other. The width of the field of view can be further increased by the arrangement of the two lens groups 1a and 1b. Further, by correcting the aberration lens 14, the aberration of the light passing through the main lens 11 can be effectively corrected, so that the present invention can be achieved. The purpose.
惟以上所述者，僅為本發明之實施例而已，當 不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。 However, the above is only an embodiment of the present invention, when The scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the present invention in the scope of the invention and the patent specification are still within the scope of the invention.
100‧‧‧影像擷取裝置 100‧‧‧Image capture device
1、1a、1b‧‧‧鏡片組 1, 1a, 1b‧‧‧ lens group
11‧‧‧主透鏡 11‧‧‧Main lens
12‧‧‧第一反射鏡 12‧‧‧First mirror
121‧‧‧第一反射面 121‧‧‧First reflecting surface
13‧‧‧第二反射鏡 13‧‧‧second mirror
131‧‧‧第二反射面 131‧‧‧Second reflective surface
14‧‧‧修正像差透鏡 14‧‧‧Corrected aberration lens
2‧‧‧影像感測器 2‧‧‧Image sensor
P‧‧‧平面 P‧‧‧ plane
θ1、θ2‧‧‧夾角 θ 1 , θ 2 ‧‧‧ angle
A‧‧‧軸向 A‧‧‧Axial
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