TWI449965B - Camera module - Google Patents
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- TWI449965B TWI449965B TW098117226A TW98117226A TWI449965B TW I449965 B TWI449965 B TW I449965B TW 098117226 A TW098117226 A TW 098117226A TW 98117226 A TW98117226 A TW 98117226A TW I449965 B TWI449965 B TW I449965B
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Description
本發明涉及一種成像技術，尤其涉及一種相機模組。 The present invention relates to an imaging technique, and more particularly to a camera module.
隨著攝像技術的發展，相機模組在各種用途的攝像裝置中得到廣泛的應用，相機模組與各種可擕式電子裝置如手機、膝上型電腦等的結合，更得到眾多消費者的青睞。 With the development of camera technology, camera modules have been widely used in various types of camera devices. The combination of camera modules and various portable electronic devices such as mobile phones and laptops has been favored by many consumers. .
相機模組通常包括鏡筒，收容在鏡筒中的鏡片及接收來自鏡片的光線的影像感測器。能夠獲得較佳的成像品質係對相機模組的基本要求。然而，進入相機模組的光線在透射過鏡片的同時，容易在鏡片的表面發生反射，這些反射光線容易集中地由固定鏡片的鏡筒反射最終到達影像感測器並為影像感測器所感測，導致輸出的圖像形成集中的耀斑(Flare)現象，從而降低了相機模組的成像品質。 The camera module typically includes a lens barrel, a lens housed in the lens barrel, and an image sensor that receives light from the lens. The ability to achieve better imaging quality is a fundamental requirement for camera modules. However, the light entering the camera module is easily reflected on the surface of the lens while being transmitted through the lens. The reflected light is easily concentrated by the lens barrel of the fixed lens and finally reaches the image sensor and is sensed by the image sensor. , causing the output image to form a concentrated Flare phenomenon, thereby reducing the imaging quality of the camera module.
有鑒於此，有必要提供一種可提升成像品質的相機模組。 In view of this, it is necessary to provide a camera module that can improve image quality.
一種相機模組，其包括一個鏡筒，一個收容在該鏡筒內的鏡片及一個用於接收來自該鏡片的光線的影像感測器。該鏡片具有一個光學部及一個從該光學部周緣形成的非光學部。該鏡筒包括一個垂直於該鏡片光軸且與該鏡片物側表面相對的內表面。其中，該鏡筒在該內表面上設有一個用於支撐該非光學部的支撐部及用於 散射光線的散射部。該散射部為用於散射光線的微結構，該散射部包括由複數第一條形凸起圍成的格子圖案。 A camera module includes a lens barrel, a lens housed in the lens barrel, and an image sensor for receiving light from the lens. The lens has an optical portion and a non-optical portion formed from the periphery of the optical portion. The barrel includes an inner surface that is perpendicular to the optical axis of the lens and opposite the side surface of the lens. Wherein the lens barrel is provided on the inner surface with a support portion for supporting the non-optical portion and A scattering portion that scatters light. The scattering portion is a microstructure for scattering light, and the scattering portion includes a lattice pattern surrounded by a plurality of first strip-shaped protrusions.
一種相機模組，其包括一個鏡筒，一個收容在該鏡筒內的鏡片及一個用於接收來自該鏡片的光線的影像感測器。該鏡片具有一個光學部及一個從該光學部周緣形成的非光學部。該鏡筒包括一個垂直於該鏡片光軸且與該鏡片物側表面相對的內表面。其中，該鏡筒在該內表面上設有一個用於支撐該非光學部的支撐部及用於散射光線的散射部。該散射部為用於散射光線的微結構，該散射部包括由複數第一條形凹槽圍成且分佈規律的格子圖案。 A camera module includes a lens barrel, a lens housed in the lens barrel, and an image sensor for receiving light from the lens. The lens has an optical portion and a non-optical portion formed from the periphery of the optical portion. The barrel includes an inner surface that is perpendicular to the optical axis of the lens and opposite the side surface of the lens. Wherein, the lens barrel is provided on the inner surface with a support portion for supporting the non-optical portion and a scattering portion for scattering light. The scattering portion is a microstructure for scattering light, and the scattering portion includes a lattice pattern surrounded by a plurality of first strip grooves and distributed regularly.
相對於先前技術，上述相機模組，在鏡筒內表面上設置散射部，可將從鏡片物側表面反射的光線進行散射，進而破壞反射光線的集中度，使影像感測器輸出的圖像的耀斑現象減輕，從而提升相機模組的成像品質。 Compared with the prior art, the camera module has a scattering portion disposed on the inner surface of the lens barrel to scatter light reflected from the surface of the lens object, thereby destroying the concentration of the reflected light and outputting the image of the image sensor. The flare phenomenon is reduced, thereby improving the imaging quality of the camera module.
20‧‧‧相機模組 20‧‧‧ camera module
12、13‧‧‧鏡片 12, 13‧‧‧ lenses
22‧‧‧影像感測器 22‧‧‧Image Sensor
110‧‧‧側壁 110‧‧‧ side wall
114‧‧‧圓錐形通孔 114‧‧‧Conical through hole
116‧‧‧內表面 116‧‧‧ inner surface
118‧‧‧散射部 118‧‧‧scattering section
124‧‧‧光學部 124‧‧‧Optical Department
142‧‧‧內螺紋 142‧‧‧ internal thread
11‧‧‧鏡筒 11‧‧‧Mirror tube
14‧‧‧鏡座 14‧‧‧Mirror seat
24‧‧‧電路板 24‧‧‧ boards
112‧‧‧前蓋體 112‧‧‧ front cover
122‧‧‧物側表面 122‧‧‧Side side surface
117‧‧‧支撐部 117‧‧‧Support
119‧‧‧外螺紋 119‧‧‧ external thread
126‧‧‧非光學部 126‧‧‧Non-optics
144‧‧‧內表面 144‧‧‧ inner surface
圖1係本發明實施方式提供的相機模組的剖面示意圖。 FIG. 1 is a cross-sectional view of a camera module according to an embodiment of the present invention.
圖2係圖1的相機模組的鏡筒的平面放大示意圖。 2 is a plan enlarged view of the lens barrel of the camera module of FIG. 1.
下面將結合附圖對本發明作進一步的詳細說明。 The invention will be further described in detail below with reference to the accompanying drawings.
請參閱圖1，本發明實施方式提供的一種相機模組20，其包括一個鏡筒11，二個鏡片12、13，一個鏡座14，一個影像感測器22及一個電路板24。 Referring to FIG. 1 , a camera module 20 according to an embodiment of the present invention includes a lens barrel 11 , two lenses 12 , 13 , a lens holder 14 , an image sensor 22 , and a circuit board 24 .
該鏡筒11為一中空的圓柱體。該鏡筒11具有一圍成圓筒狀的側壁110，以及從該側壁110的一端部延伸出來的前蓋體112，該前蓋 體112上開設有一個圓錐形通孔114以控制進入鏡筒11內的光線的光通量。前蓋體112包括一個垂直於鏡片12光軸且與該鏡片12的物側表面122相對的內表面116，該圓錐形通孔114貫穿該內表面116。該鏡筒11在該內表面116上設有一個支撐部117及一個散射部118。該側壁110外表面設置有外螺紋119。 The lens barrel 11 is a hollow cylinder. The lens barrel 11 has a side wall 110 enclosing a cylindrical shape, and a front cover body 112 extending from one end portion of the side wall 110, the front cover A conical through hole 114 is defined in the body 112 to control the luminous flux of light entering the lens barrel 11. The front cover 112 includes an inner surface 116 that is perpendicular to the optical axis of the lens 12 and opposite the object side surface 122 of the lens 12, the conical through hole 114 extending through the inner surface 116. The lens barrel 11 is provided with a support portion 117 and a scattering portion 118 on the inner surface 116. The outer surface of the side wall 110 is provided with an external thread 119.
該支撐部117為平面，其圍繞該散射部118設置。該散射部118為用於散射光線的微結構。本實施方式中，該散射部118包括由複數第一條形凸起118a圍成且分佈規律的格子圖案及沿該鏡片12光軸向外呈放射螺旋狀的複數第二條形凸起118b組成的螺旋圖案(見圖2)。較佳地，該散射部118的粗糙度為0.1~1微米，散射效果更佳。當光線入射至內表面116的散射部118時，被散射部118進行散射，從而使在散射部118上的反射光線分散。本實施方式中，該散射部118與前蓋體112為一體成型結構。 The support portion 117 is a flat surface that is disposed around the scattering portion 118. The scattering portion 118 is a microstructure for scattering light. In this embodiment, the scattering portion 118 includes a lattice pattern surrounded by a plurality of first strip-shaped protrusions 118a and distributed regularly, and a plurality of second strip-shaped protrusions 118b radially radiating along the optical axis of the lens 12 Spiral pattern (see Figure 2). Preferably, the scattering portion 118 has a roughness of 0.1 to 1 micrometer, and the scattering effect is better. When the light is incident on the scattering portion 118 of the inner surface 116, it is scattered by the scattering portion 118, thereby dispersing the reflected light on the scattering portion 118. In the present embodiment, the scattering portion 118 and the front cover 112 are integrally formed.
該二個鏡片12、13收容於該鏡筒11內，本實施方式中，該鏡片12，13均為玻璃鏡片，其中，鏡片12為物側鏡片，鏡片13為像側鏡片。 The two lenses 12 and 13 are housed in the lens barrel 11. In the present embodiment, the lenses 12 and 13 are glass lenses, wherein the lens 12 is an object side lens and the lens 13 is an image side lens.
鏡片12具有一個光學部124，及一個從該光學部124周緣形成的非光學部126。該光學部124用於將相機模組20外的光線導引並用於成像，該光學部124可採用成像品質較佳的非球面光學部。該非光學部126用於支撐該光學部124，且該非光學部126由該支撐部117支撐而將鏡片12固定在鏡筒11內。另外，可在鏡片12的其中一個表面塗設紅外濾光膜，以濾除紅外線，提升成像品質。鏡片13的結構與鏡片12的結構相同，鏡片13可藉由膠合方式固定在鏡筒11內。 The lens 12 has an optical portion 124 and a non-optical portion 126 formed from the periphery of the optical portion 124. The optical portion 124 is used to guide and use light outside the camera module 20, and the optical portion 124 can adopt an aspherical optical portion with better imaging quality. The non-optical portion 126 is for supporting the optical portion 124, and the non-optical portion 126 is supported by the support portion 117 to fix the lens 12 in the lens barrel 11. In addition, an infrared filter film may be coated on one surface of the lens 12 to filter out infrared rays and improve image quality. The structure of the lens 13 is the same as that of the lens 12, and the lens 13 can be fixed in the lens barrel 11 by gluing.
該鏡座14包括一開設有內螺紋142的內表面144。該鏡座14與該鏡筒11藉由該內螺紋142與該外螺紋119的相互嚙合而連接在一起。優選地，該鏡座14及該鏡筒11均由黑色塑膠製成，及鏡座14的內表面144及鏡筒11的內表面116均塗設有吸光材料層，以進一步減少鏡座14及鏡筒11內的反射光線。該吸光材料層可以係黑色樹脂層。 The mirror mount 14 includes an inner surface 144 that is internally threaded 142. The lens holder 14 and the lens barrel 11 are coupled together by the mutual engagement of the internal thread 142 and the external thread 119. Preferably, the lens holder 14 and the lens barrel 11 are made of black plastic, and the inner surface 144 of the lens holder 14 and the inner surface 116 of the lens barrel 11 are coated with a layer of light absorbing material to further reduce the lens holder 14 and The reflected light inside the lens barrel 11. The light absorbing material layer may be a black resin layer.
該影像感測器22設置在電路板24上且與該電路板24電連接。影像感測器22與該電路板24一起收容於鏡座14內。具體地，該影像感測器22與鏡片12，13相對設置，其用於接收來自鏡片12，13的光線並產生對應的圖像電信號，該影像感測器22可為電荷耦合感測器(Charge Coupled Device，CCD)或互補金屬氧化物半導體感測器(Complementary Metal-Oxide-Semiconductor，CMOS)。 The image sensor 22 is disposed on the circuit board 24 and is electrically connected to the circuit board 24. The image sensor 22 is housed in the lens holder 14 together with the circuit board 24. Specifically, the image sensor 22 is disposed opposite to the lenses 12, 13 for receiving light from the lenses 12, 13 and generating corresponding image electrical signals. The image sensor 22 can be a charge coupled sensor. (Charge Coupled Device, CCD) or Complementary Metal-Oxide-Semiconductor (CMOS).
當外界光線經由鏡筒11的圓錐形孔114進入鏡筒11內時，該外界光線透過鏡片12的光學部124，然而，部分外界光線會由該鏡片12的物側表面122反射至該鏡筒的內表面116。由於散射部118設置在內表面116上，因此，當該部分光線入射至該內表面116時會被散射，從而破壞這些反射光線的集中度，因此，影像感測器22輸出的圖像的耀斑現象減輕，提升了相機模組20的成像品質。 When external light enters the lens barrel 11 through the conical hole 114 of the lens barrel 11, the external light passes through the optical portion 124 of the lens 12, however, part of the external light is reflected from the object side surface 122 of the lens 12 to the lens barrel. Inner surface 116. Since the scattering portion 118 is disposed on the inner surface 116, when the portion of the light is incident on the inner surface 116, it is scattered, thereby destroying the concentration of the reflected light, and therefore, the flare of the image output by the image sensor 22. The phenomenon is reduced, and the imaging quality of the camera module 20 is improved.
綜上所述，本發明實施方式提供的相機模組，在鏡筒內表面上設置散射部，可將從鏡片表面反射的光線進行散射，進而破壞反射光線的集中度，使影像感測器輸出的圖像的耀斑現象減輕，從而提升相機模組的成像品質。 In summary, the camera module provided by the embodiment of the present invention provides a scattering portion on the inner surface of the lens barrel to scatter light reflected from the surface of the lens, thereby destroying the concentration of the reflected light and outputting the image sensor. The flare phenomenon of the image is reduced, thereby improving the imaging quality of the camera module.
綜上所述，本發明確已符合發明專利之要件，遂依法提出專利申請。惟，以上所述者僅為本發明之較佳實施方式，自不能以此限 制本案之申請專利範圍。舉凡熟悉本案技藝之人士援依本發明之精神所作之等效修飾或變化，例如該散射部可包括由複數第一條形凹槽圍成且分佈規律的格子圖案及沿該鏡片光軸向外呈放射螺旋狀的複數第二條形凹槽組成的螺旋圖案等，皆應涵蓋於以下申請專利範圍內。 In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and cannot be limited thereto. The scope of the patent application for this case. Equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention, for example, the scattering portion may include a lattice pattern surrounded by a plurality of first strip-shaped grooves and distributed along the optical axis of the lens. A spiral pattern composed of a plurality of second strip-shaped grooves in a radial spiral shape, etc., should be included in the following patent application.
20‧‧‧相機模組 20‧‧‧ camera module
12、13‧‧‧鏡片 12, 13‧‧‧ lenses
22‧‧‧影像感測器 22‧‧‧Image Sensor
110‧‧‧側壁 110‧‧‧ side wall
114‧‧‧圓錐形通孔 114‧‧‧Conical through hole
116‧‧‧內表面 116‧‧‧ inner surface
118‧‧‧散射部 118‧‧‧scattering section
124‧‧‧光學部 124‧‧‧Optical Department
142‧‧‧內螺紋 142‧‧‧ internal thread
11‧‧‧鏡筒 11‧‧‧Mirror tube
14‧‧‧鏡座 14‧‧‧Mirror seat
24‧‧‧電路板 24‧‧‧ boards
112‧‧‧前蓋體 112‧‧‧ front cover
122‧‧‧物側表面 122‧‧‧Side side surface
117‧‧‧支撐部 117‧‧‧Support
119‧‧‧外螺紋 119‧‧‧ external thread
126‧‧‧非光學部 126‧‧‧Non-optics
144‧‧‧內表面 144‧‧‧ inner surface
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW098117226A TWI449965B (en) | 2009-05-25 | 2009-05-25 | Camera module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW098117226A TWI449965B (en) | 2009-05-25 | 2009-05-25 | Camera module |
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| Publication Number | Publication Date |
|---|---|
| TW201042290A TW201042290A (en) | 2010-12-01 |
| TWI449965B true TWI449965B (en) | 2014-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW098117226A TWI449965B (en) | 2009-05-25 | 2009-05-25 | Camera module |
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| TW (1) | TWI449965B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050243429A1 (en) * | 2002-07-08 | 2005-11-03 | Koninklijke Philips Electroicronicis | Optical lens component and optical lens arrangement comprising the lens component |
| TWM322003U (en) * | 2006-12-13 | 2007-11-11 | Largan Precision Co Ltd | Photographic module |
| US20080170297A1 (en) * | 2007-01-17 | 2008-07-17 | Shinozawa Yohei | Optical element and optical unit |
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2009
- 2009-05-25 TW TW098117226A patent/TWI449965B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050243429A1 (en) * | 2002-07-08 | 2005-11-03 | Koninklijke Philips Electroicronicis | Optical lens component and optical lens arrangement comprising the lens component |
| TWM322003U (en) * | 2006-12-13 | 2007-11-11 | Largan Precision Co Ltd | Photographic module |
| US20080170297A1 (en) * | 2007-01-17 | 2008-07-17 | Shinozawa Yohei | Optical element and optical unit |
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| TW201042290A (en) | 2010-12-01 |
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