TWM463390U - Light guide element light sensing module and optical mouse - Google Patents
Light guide element light sensing module and optical mouse Download PDFInfo
- Publication number
- TWM463390U TWM463390U TW102209049U TW102209049U TWM463390U TW M463390 U TWM463390 U TW M463390U TW 102209049 U TW102209049 U TW 102209049U TW 102209049 U TW102209049 U TW 102209049U TW M463390 U TWM463390 U TW M463390U
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- light guiding
- optical axis
- inclined surface
- guiding portion
- Prior art date
Links
Landscapes
- Position Input By Displaying (AREA)
Description
本新型是有關於一種導光元件與光感測模組,特別是指一種可應用於光學滑鼠的導光元件與光感測模組。The invention relates to a light guiding component and a light sensing module, in particular to a light guiding component and a light sensing module applicable to an optical mouse.
滑鼠是目前常見的電腦輸入裝置,可讓使用者藉由其對應移動電腦螢幕上的定位指標,並可透過其按鍵、滾輪而進行資料的輸入與編輯。一般的光學滑鼠如中華民國公告號第I348634號專利所述,可供使用者於一表面上操作,並包含一光源、一影像感測器及一稜鏡。該稜鏡設置於影像感測器與表面之間,光源則設置於稜鏡的旁側。據此,光源發出的光線可由稜鏡傳導至稜鏡底下的表面,經該表面反射後再經該稜鏡傳導至影像感測器,而後影像感測器與光學滑鼠內部的電路單元可依接收的光線的干涉條紋而判斷電腦螢幕上的定位指標的移動方向及位移量。The mouse is a common computer input device, which allows the user to input and edit data through the corresponding positioning indicators on the mobile computer screen and through the buttons and scroll wheels. A typical optical mouse, as described in the Patent No. I348634 of the Republic of China, is operable by a user on a surface and includes a light source, an image sensor, and a cymbal. The crucible is disposed between the image sensor and the surface, and the light source is disposed beside the crucible. Accordingly, the light emitted by the light source can be transmitted from the crucible to the surface under the crucible, reflected by the surface, and then transmitted to the image sensor through the crucible, and then the circuit unit inside the image sensor and the optical mouse can be The interference fringe of the received light determines the moving direction and displacement of the positioning index on the computer screen.
但上述光學滑鼠的缺點在於,其光源是水平地設置於稜鏡的旁側,所以光源連同稜鏡需要佔用較大的平面空間,導致光學滑鼠的體積增加。此外,上述光源、稜鏡與影像感測器各為獨立的構件,需分別組裝於光學滑鼠 的殼體內,而非以模組化的方式進行組裝,因此較不利於生產、組裝過程的進行。However, the above optical mouse has the disadvantage that its light source is disposed horizontally on the side of the crucible, so that the light source together with the crucible needs to occupy a large plane space, resulting in an increase in the volume of the optical mouse. In addition, the light source, the cymbal and the image sensor are independent components, and are separately assembled to the optical mouse. The assembly is not assembled in a modular manner, so it is not conducive to the production and assembly process.
因此,本新型之目的,即在提供一種能讓光學滑鼠體積微型化且便於組裝、製造的導光元件。Therefore, it is an object of the present invention to provide a light guiding element which can miniaturize an optical mouse and is easy to assemble and manufacture.
於是,本新型導光元件,設置於一殼體中,並配合一設置於該殼體中的光收發單元使用。該殼體可移動地置於一工作面上,並具有一鄰近該工作面的開口。該光收發單元包含一電路板、一發光元件及一感光元件,該電路板具有一下表面,該發光元件與該感光元件鄰近地設置於該電路板的下表面。Therefore, the novel light guiding element is disposed in a casing and is used in conjunction with an optical transceiver unit disposed in the casing. The housing is movably disposed on a work surface and has an opening adjacent the work surface. The optical transceiver unit comprises a circuit board, a light-emitting component and a light-sensing component. The circuit board has a lower surface, and the light-emitting component is disposed adjacent to the photosensitive component on a lower surface of the circuit board.
該導光元件包含一本體,該本體可穿透光線且介於該光收發單元與該工作面之間,並具有相反的一內表面與一外表面。該內表面鄰近該電路板的下表面,該外表面鄰近該工作面。該本體的內表面形成一對應該發光元件位置的內聚光部以及一對應該感光元件位置的內導光部,該本體的外表面形成一對應該內聚光部位置的外導光部及一對應該內導光部位置的外聚光部。The light guiding element comprises a body that can penetrate light and is interposed between the optical transceiver unit and the working surface and has an opposite inner surface and an outer surface. The inner surface is adjacent to a lower surface of the circuit board, the outer surface being adjacent to the work surface. The inner surface of the body forms a pair of inner light collecting portions corresponding to the positions of the light emitting elements and a pair of inner light guiding portions for the positions of the photosensitive elements, and the outer surface of the body forms a pair of outer light guiding portions for the position of the inner collecting portion and A pair of external light collecting portions that should be in the position of the inner light guiding portion.
其中,該發光元件發出的光線由該內聚光部匯聚傳輸至該外導光部,再由該外導光部轉折通過該殼體的開口而照射於該工作面,該工作面反射的光線通過該殼體的開口由該外聚光部匯聚並傳輸至該內導光部,再由該內導光部轉折照射於該感光元件。The light emitted by the light-emitting element is concentrated and transmitted by the inner light collecting portion to the outer light guiding portion, and the outer light guiding portion is turned through the opening of the casing to illuminate the working surface, and the light reflected by the working surface The outer light collecting portion is condensed by the opening of the casing and transmitted to the inner light guiding portion, and then the inner light guiding portion is turned and irradiated to the photosensitive member.
在一實施態樣中,該內聚光部與該外聚光部各 為一凸透鏡。該外導光部概呈柱狀且朝該工作面凸伸,並具有一周面及一封閉該周面的第一斜面,該第一斜面於朝向該外聚光部的方向係往鄰近該工作面的方向逐漸傾斜延伸。該內導光部朝該電路板凸伸且截面概呈直角三角形,並具有一第二斜面,該第二斜面於朝向該內聚光部的方向係往鄰近該電路板的方向逐漸傾斜延伸。In an embodiment, the inner collecting portion and the outer collecting portion are respectively It is a convex lens. The outer light guiding portion is substantially columnar and protrudes toward the working surface, and has a first surface and a first inclined surface that closes the circumferential surface, and the first inclined surface is adjacent to the work in a direction toward the outer light collecting portion. The direction of the face gradually extends obliquely. The inner light guiding portion protrudes toward the circuit board and has a right-angled triangular cross section, and has a second inclined surface extending obliquely in a direction toward the inner light collecting portion toward a direction adjacent to the circuit board.
其中,定義該內聚光部的一第一光軸、該外聚光部的一第二光軸、一垂直該外導光部之第一斜面的第一法線及一垂直該內導光部之第二斜面的第二法線。該第一光軸係穿過該外導光部與該發光元件,該第二光軸係穿過該內導光部,該第一光軸與該第一法線的夾角範圍為30度至39度,且該第二光軸與該第二法線的夾角範圍為10度至20度。a first optical axis of the inner concentrating portion, a second optical axis of the outer concentrating portion, a first normal line perpendicular to the first inclined surface of the outer light guiding portion, and a vertical inner guiding light The second normal of the second bevel of the part. The first optical axis passes through the outer light guiding portion and the light emitting element, and the second optical axis passes through the inner light guiding portion, and the angle between the first optical axis and the first normal line ranges from 30 degrees to 39 degrees, and the angle between the second optical axis and the second normal line ranges from 10 degrees to 20 degrees.
在另一實施態樣中,該內聚光部與該外聚光部各為一凸透鏡。該外導光部朝該工作面凸伸且截面概呈正三角形,並具有相連的一第一斜面與一第二斜面。該第一斜面於遠離該外聚光部的方向係往遠離該工作面的方向逐漸傾斜延伸,該第二斜面介於該第一斜面與該外聚光部之間,並於朝向該外聚光部的方向係往遠離該工作面的方向逐漸傾斜延伸。該內導光部朝該電路板凸伸且截面概呈直角三角形,並具有一第三斜面,該第三斜面於朝向該內聚光部的方向係往鄰近該電路板的方向逐漸傾斜延伸。In another embodiment, the inner concentrating portion and the outer concentrating portion are each a convex lens. The outer light guiding portion protrudes toward the working surface and has a substantially triangular cross section, and has a first inclined surface and a second inclined surface connected thereto. The first inclined surface gradually extends obliquely away from the working surface in a direction away from the outer light collecting portion, and the second inclined surface is interposed between the first inclined surface and the outer collecting portion, and faces the outer gathering The direction of the light portion gradually extends obliquely away from the working surface. The inner light guiding portion protrudes toward the circuit board and has a right-angled triangular cross section, and has a third inclined surface extending obliquely in a direction toward the inner light collecting portion toward a direction adjacent to the circuit board.
其中,定義該內聚光部的一第一光軸、該外聚光部的一第二光軸、一垂直該外導光部之第一斜面的第一 法線及一垂直該內導光部之第三斜面的第二法線。該第一光軸係穿過該外導光部與該發光元件,該第二光軸係穿過該內導光部。該第一光軸與該第一法線的夾角為60度,且該第二光軸與該第二法線的夾角範圍為10度至20度。a first optical axis defining the inner concentrating portion, a second optical axis of the outer concentrating portion, and a first first slanting surface perpendicular to the outer guiding portion a normal line and a second normal line that is perpendicular to the third slope of the inner light guiding portion. The first optical axis passes through the outer light guiding portion and the light emitting element, and the second optical axis passes through the inner light guiding portion. The angle between the first optical axis and the first normal line is 60 degrees, and the angle between the second optical axis and the second normal line ranges from 10 degrees to 20 degrees.
本新型的另一目的,在於提供一種包含上述光收發單元與導光元件的光感測模組。該光感測模組係設置於一殼體中而可移動地於一工作面上使用,該殼體具有一鄰近該工作面的開口。該光感測模組透過該殼體的開口對該工作面進行光線的收發。Another object of the present invention is to provide a light sensing module including the above optical transceiver unit and light guiding element. The light sensing module is disposed in a housing and movably used on a working surface, the housing having an opening adjacent to the working surface. The light sensing module transmits and receives light to the working surface through the opening of the housing.
較佳地,於該光感測模組中,該發光元件為垂直共振腔面射型雷射或發光二極體,該感光元件為互補式金氧半像素陣列感測器。Preferably, in the light sensing module, the light-emitting element is a vertical cavity surface-emitting laser or a light-emitting diode, and the photosensitive element is a complementary gold-oxygen half-pixel array sensor.
本新型的再一目的,在於提供一種使用上述光感測模組的光學滑鼠。該光學滑鼠於一工作面上使用,並包含一殼體及一如上述的光感測模組。該殼體可移動地置放於該工作面上,並具有一鄰近該工作面的開口。該光感測模組設置於該殼體中對應其開口處。Still another object of the present invention is to provide an optical mouse using the above-described light sensing module. The optical mouse is used on a work surface and includes a housing and a light sensing module as described above. The housing is movably mounted on the work surface and has an opening adjacent the work surface. The light sensing module is disposed in the housing corresponding to the opening thereof.
本新型之功效在於:The effect of this new model is:
(1)該導光元件的內聚光部與外導光部垂直對應於該發光元件,該導光元件的內導光部與外聚光部垂直對應於該感光元件,使該發光元件與感光元件可鄰近地設置於電路板的同一面(下表面),而無須將發光元件設置於導光元件側邊。此設計可減少光感測模組佔用的平面空間,而能有效減少光學滑鼠的體積。(1) The inner light collecting portion of the light guiding element and the outer light guiding portion vertically correspond to the light emitting element, and the inner light guiding portion and the outer light collecting portion of the light guiding element vertically correspond to the light receiving element, so that the light emitting element and the light emitting element The photosensitive elements may be disposed adjacent to the same side (lower surface) of the circuit board without providing the light emitting elements on the sides of the light guiding elements. This design can reduce the plane space occupied by the light sensing module, and can effectively reduce the volume of the optical mouse.
(2)該發光元件與感光元件可直接裝設於電路板上而構成一光收發單元,於光學滑鼠的生產過程中不需分別將各個獨立元件裝設於光學滑鼠的殼體中,此種模組化的設計能簡化光學滑鼠的組裝流程,而利於生產製造。(2) The light-emitting element and the light-sensing element can be directly mounted on the circuit board to form an optical transceiver unit. In the production process of the optical mouse, it is not necessary to separately install each individual component in the housing of the optical mouse. This modular design simplifies the assembly process of the optical mouse and is advantageous for manufacturing.
100‧‧‧光學滑鼠100‧‧‧ optical mouse
47‧‧‧外導光部47‧‧‧External Light Guide
1‧‧‧殼體1‧‧‧shell
471‧‧‧周面471‧‧‧Week
11‧‧‧開口11‧‧‧ openings
472‧‧‧第一斜面472‧‧‧First slope
2‧‧‧光感測模組2‧‧‧Light sensing module
48‧‧‧外導光部48‧‧‧External Light Guide
3‧‧‧光收發單元3‧‧‧Optical transceiver unit
481‧‧‧第一斜面481‧‧‧ first slope
31‧‧‧電路板31‧‧‧ boards
482‧‧‧第二斜面482‧‧‧second bevel
311‧‧‧下表面311‧‧‧ lower surface
91‧‧‧工作面91‧‧‧Working face
32‧‧‧發光元件32‧‧‧Lighting elements
92、92’‧‧‧光線92, 92’‧‧‧ rays
33‧‧‧感光元件33‧‧‧Photosensitive elements
93、93’‧‧‧光線93, 93’‧‧‧ rays
4‧‧‧導光元件4‧‧‧Light guiding elements
L1 、L1 '‧‧‧第一光軸L 1 , L 1 '‧‧‧ first optical axis
41‧‧‧本體41‧‧‧Ontology
L2 、L2 '‧‧‧第二光軸L 2 , L 2 '‧‧‧ second optical axis
42‧‧‧內表面42‧‧‧ inner surface
L3 、L3 '‧‧‧第一法線L 3 , L 3 '‧‧‧ first normal
43‧‧‧外表面43‧‧‧ outer surface
L4 、L4 '‧‧‧第二法線L 4 , L 4 '‧‧‧ second normal
44‧‧‧內聚光部44‧‧‧Intra-light department
θ1 、θ1 '‧‧‧第一夾角θ 1 , θ 1 '‧‧‧ first angle
45‧‧‧內導光部45‧‧‧Inside Light Guide
θ2 、θ2 '‧‧‧第二夾角θ 2 , θ 2 '‧‧‧ second angle
451‧‧‧第二斜面451‧‧‧second bevel
θ3 ‧‧‧第三夾角θ 3 ‧‧‧ third angle
452‧‧‧第三斜面452‧‧‧ third slope
46‧‧‧外聚光部46‧‧‧External Light Department
本新型之其他的特徵及功效,將於參照圖式的較佳實施例詳細說明中清楚地呈現,其中:圖1是一示意圖,說明本新型光學滑鼠的第一較佳實施例;圖2是一示意圖,說明該第一較佳實施例的一導光元件的實施態樣;圖3是一示意圖,說明本新型光學滑鼠的第二較佳實施例;及圖4是一示意圖,說明該第二較佳實施例的一導光元件的實施態樣。The other features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the drawings, wherein: FIG. 1 is a schematic diagram illustrating a first preferred embodiment of the present optical mouse; FIG. Is a schematic view showing an embodiment of a light guiding device of the first preferred embodiment; FIG. 3 is a schematic view showing a second preferred embodiment of the optical mouse of the present invention; and FIG. 4 is a schematic view illustrating An embodiment of a light guiding element of the second preferred embodiment.
有關本新型之前述及其他技術內容、特點與功效,在以下配合參考圖式之二個較佳實施例的詳細說明中,將可清楚地呈現。The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.
參閱圖1、圖2,為本新型光學滑鼠100的第一較佳實施例。光學滑鼠100可供使用者於一工作面91上使用,並包含一殼體1及一光感測模組2。Referring to Figures 1 and 2, a first preferred embodiment of the optical mouse 100 of the present invention is shown. The optical mouse 100 can be used by a user on a working surface 91 and includes a housing 1 and a light sensing module 2.
殼體1可移動地置放於工作面9上,並於其底面形成一鄰近工作面91的開口11。The housing 1 is movably placed on the work surface 9 and defines an opening 11 adjacent the working surface 91 on the bottom surface thereof.
光感測模組2設置於殼體1中,可發出照射於工作面91上的光線92,並接收由工作面9反射的光線93,而配合光學滑鼠100的控制電路(圖中未繪製),判斷光學滑鼠100於工作面91上的位移方向及位移量,並對應地呈現於顯示螢幕的定位指標上。The light sensing module 2 is disposed in the housing 1 and emits light 92 that is incident on the working surface 91 and receives the light 93 reflected by the working surface 9 to cooperate with the control circuit of the optical mouse 100 (not drawn in the figure). The displacement direction and the displacement amount of the optical mouse 100 on the working surface 91 are determined and correspondingly presented on the display index of the display screen.
其中,光感測模組2包括於垂直方向相互對應的一光收發單元3及一導光元件4。The optical sensing module 2 includes an optical transceiver unit 3 and a light guiding component 4 corresponding to each other in the vertical direction.
光收發單元3具有一電路板31、一發光元件32及一感光元件33,電路板31具有一下表面311,發光元件32與感光元件33係鄰近地設置於電路板31的下表面311。The optical transceiver unit 3 has a circuit board 31, a light-emitting element 32 and a light-receiving element 33. The circuit board 31 has a lower surface 311. The light-emitting element 32 is disposed adjacent to the photosensitive element 33 on the lower surface 311 of the circuit board 31.
本實施例中,發光元件32是一垂直共振腔面射型雷射(vertical-cavity surface-emitting laser,簡稱為VCSEL),可發出光學滑鼠100移動定位所需的雷射光。感光元件33則為一互補式金氧半像素陣列感測器(CMOS pixel-array sensor),可接收發光元件32發出、由導光元件4傳導且由工作面91反射的光線,並由其像素陣列感測出對應的影像訊號。但上述發光元件32、感光元件33採用的半導體元件可視需要而對應調整,例如發光元件32也可採用發光二極體(LED),因此不以此處揭露的內容為限。In this embodiment, the light-emitting element 32 is a vertical-cavity surface-emitting laser (VCSEL), which can emit laser light required for the optical mouse 100 to move and position. The photosensitive element 33 is a complementary CMOS pixel-array sensor capable of receiving light emitted by the light-emitting element 32, conducted by the light-guiding element 4 and reflected by the working surface 91, and by the pixel thereof. The array senses the corresponding image signal. However, the semiconductor elements used in the light-emitting element 32 and the light-receiving element 33 may be adjusted correspondingly as needed. For example, the light-emitting element 32 may also be a light-emitting diode (LED), and thus is not limited to the contents disclosed herein.
導光元件4由可穿透光線的塑膠材料透過射出成型技術製作,其具有一本體41。導光元件4的本體41垂直地設置於光收發單元3與工作面91之間,並具有相反 的一內表面42與一外表面43,其內表面42係鄰近電路板31的下表面311,外表面43則鄰近工作面91且平行於內表面42。本實施例中,該本體41的內表面42係形成一對應發光元件32位置的內聚光部44及一對應感光元件33位置的內導光部45,而該本體41的外表面43形成一對應該內導光部45位置的外聚光部46及一對應該內聚光部44位置的外導光部47。The light guiding element 4 is made of a light transmissive plastic material through an injection molding technique and has a body 41. The body 41 of the light guiding element 4 is vertically disposed between the optical transceiver unit 3 and the working surface 91, and has the opposite An inner surface 42 and an outer surface 43 have an inner surface 42 adjacent the lower surface 311 of the circuit board 31, and an outer surface 43 adjacent the working surface 91 and parallel to the inner surface 42. In this embodiment, the inner surface 42 of the body 41 forms an inner light collecting portion 44 corresponding to the position of the light emitting element 32 and an inner light guiding portion 45 corresponding to the position of the photosensitive element 33, and the outer surface 43 of the body 41 forms a The outer light collecting portion 46 corresponding to the position of the inner light guiding portion 45 and the pair of outer light guiding portions 47 at the position of the inner light collecting portion 44.
此處,內聚光部44與外聚光部46各為一凸透鏡。外導光部47概呈圓柱狀且朝該工作面91凸伸,並具有一圓周面471及一封閉該周面471的第一斜面472。第一斜面472於朝向外聚光部46的方向係往鄰近工作面91的方向逐漸傾斜延伸。另一方面,內導光部45係朝電路板31凸伸且截面概呈直角三角形,並具有一第二斜面451。該第二斜面451於朝向內聚光部44的方向係往鄰近電路板31的方向逐漸傾斜延伸。Here, the inner light collecting portion 44 and the outer light collecting portion 46 are each a convex lens. The outer light guiding portion 47 is substantially cylindrical and protrudes toward the working surface 91, and has a circumferential surface 471 and a first inclined surface 472 that closes the circumferential surface 471. The first slope 472 extends obliquely in a direction toward the outer concentrating portion 46 toward the adjacent work surface 91. On the other hand, the inner light guiding portion 45 is convex toward the circuit board 31 and has a right-angled triangular cross section and has a second inclined surface 451. The second slope 451 extends obliquely in a direction toward the inner concentrating portion 44 toward the adjacent circuit board 31.
進一步定義上述內聚光部44的一第一光軸L1、外聚光部46的一第二光軸L2、一垂直外導光部47之第一斜面472的第一法線L3及一垂直內導光部45之第二斜面451的第二法線L4,該第一光軸L1係穿過外導光部47與發光元件32,該第二光軸L2則穿過內導光部45。Further defining a first optical axis L1 of the inner light collecting portion 44, a second optical axis L2 of the outer light collecting portion 46, a first normal line L3 of the first inclined surface 472 of the vertical outer light guiding portion 47, and a vertical The second normal line L4 of the second inclined surface 451 of the inner light guiding portion 45 passes through the outer light guiding portion 47 and the light emitting element 32, and the second optical axis L2 passes through the inner light guiding portion 45. .
依照上述設計,發光元件32發出的雷射光線92可大致視為垂直入射於內聚光部44,並由內聚光部44的透鏡匯聚為平行光,而於導光元件4的本體41內垂直向下傳輸至外導光部47處。於外導光部47的第一斜面472處, 光線92從塑膠材質的導光元件4穿透至空氣中而產生折射,且由於第一斜面472的傾斜方向,光線92折射出第一斜面472後,是往外導光部47與外聚光部46之間的方向入射於工作面91。According to the above design, the laser beam 92 emitted by the light-emitting element 32 can be regarded as substantially perpendicular to the inner light collecting portion 44, and is concentrated by the lens of the inner light collecting portion 44 into parallel light, and is in the body 41 of the light guiding element 4. It is transmitted vertically downward to the outer light guiding portion 47. At the first slope 472 of the outer light guiding portion 47, The light 92 penetrates from the light guide member 4 of the plastic material into the air to cause refraction, and due to the oblique direction of the first slope 472, the light ray 92 reflects the first slope 472, and is the outward light guide portion 47 and the outer light collecting portion. The direction between 46 is incident on the work surface 91.
隨後,由工作面91反射的光線93會至少部分地由外聚光部46匯聚,而於導光元件4的本體41內大致垂直向上地傳輸至內導光部45處,再根據內導光部45的第二斜面451的傾斜方向,而使光線93往內導光部45與內聚光部44之間的方向轉折,最終照射於感光元件33。Subsequently, the light ray 93 reflected by the working surface 91 is at least partially concentrated by the outer concentrating portion 46, and is transmitted substantially vertically upward in the body 41 of the light guiding element 4 to the inner light guiding portion 45, and then according to the inner guiding light. The second inclined surface 451 of the portion 45 is inclined in the direction in which the light ray 93 is turned inward in the direction between the inner light guiding portion 45 and the inner light collecting portion 44, and is finally irradiated onto the photosensitive member 33.
在上述過程中,發光元件32發出的光線92由內聚光部44入射至導光元件4之內後,其大致為平行光並大致沿第一光軸L1方向行進,所以光線92入射於外導光部47之第一斜面472的入射角,可視為等同於第一光軸L1與第一法線L3之間的第一夾角θ1 (即假設光線92於第一斜面472的入射角等於第一夾角θ1 )。由於導光元件4的材質為塑膠材料(假設折射率為1.5),根據司乃爾定律(Snell’s law),若要確保光線92可順利從導光元件4入射至空氣(折射率為1)中而不產生全反射,則該第一夾角θ1 必須小於41.8度。而在本新型的實施態樣中,該第一夾角θ1 的較佳實施範圍則為30度至39度,此設計能有效地控制光線92折射後的前進方向,以確保光感測模組2的光學品質。In the above process, after the light ray 92 emitted from the light-emitting element 32 is incident on the light-guiding element 4 by the inner concentrating portion 44, it is substantially parallel light and travels substantially in the direction of the first optical axis L1, so that the light ray 92 is incident on the outside. The incident angle of the first inclined surface 472 of the light guiding portion 47 can be regarded as equivalent to the first angle θ 1 between the first optical axis L1 and the first normal line L3 (ie, the incident angle of the light beam 92 on the first inclined surface 472 is equal to The first angle θ 1 ). Since the material of the light guiding element 4 is a plastic material (assuming a refractive index of 1.5), according to Snell's law, it is ensured that the light 92 can be smoothly incident from the light guiding element 4 into the air (refractive index is 1). The first angle θ 1 must be less than 41.8 degrees without total reflection. In the embodiment of the present invention, the preferred range of the first angle θ 1 is 30 degrees to 39 degrees. This design can effectively control the direction of refraction of the light 92 to ensure the light sensing module. 2 optical quality.
另一方面,由工作面91反射的光線93經外聚光部46匯聚入射至導光元件4之內後,大致沿第二光軸L2的方向行進,所以光線93入射於內導光部45之第二斜面 451的入射角,可視為大致等同於第二光軸L2與第二法線L4之間的第二夾角θ2 (即假設光線93於第二斜面451的入射角等於第二夾角θ2 )。類似於第一夾角θ1 ,光線93在第二斜面451不產生全反射的條件是第二夾角θ2 必須小於41.8度。此外,除了控制第二夾角θ2 以避免光線93的全反射,本新型光學滑鼠100還能藉由內導光部45的第二斜面451的傾斜方向及角度,調整光線93的前進方向,以增進感光元件33於電路板31設置位置的彈性。On the other hand, the light 93 reflected by the working surface 91 is concentrated by the external light collecting portion 46 and enters the light guiding element 4, and travels substantially in the direction of the second optical axis L2. Therefore, the light 93 is incident on the inner light guiding portion 45. The incident angle of the second inclined surface 451 can be regarded as substantially equal to the second included angle θ 2 between the second optical axis L2 and the second normal line L4 (ie, the incident angle of the light ray 93 on the second inclined surface 451 is equal to the second angle) θ 2 ). Similar to the first angle θ 1 , the condition that the ray 93 does not cause total reflection at the second slope 451 is that the second angle θ 2 must be less than 41.8 degrees. In addition, in addition to controlling the second angle θ 2 to avoid total reflection of the light ray 93, the optical mouse 100 of the present invention can also adjust the direction of advancement of the light ray 93 by the tilt direction and angle of the second slope 451 of the inner light guiding portion 45. The elasticity of the photosensitive member 33 at the position where the circuit board 31 is placed is improved.
具體來說,由於內導光部45的第二斜面451的傾斜方向可控制光線93的前進方向,所以本新型提出的技術方案可視需要調整感光元件33於電路板31上的設置位置(例如可將感光元件33設置於較靠近發光元件32處,以減少感光元件33與發光元件32共同佔用的平面面積),並根據感光元件33的位置對應調整第二斜面451的傾斜方向與傾斜角度,使光線93能確實地由感光元件33接收。本實施例中,第二夾角θ2 的較佳實施範圍為10度至20度,此設計能有效地控制光線93從第二斜面451折射後的前進方向,確保感光元件33的感測效果。Specifically, since the tilting direction of the second inclined surface 451 of the inner light guiding portion 45 can control the traveling direction of the light ray 93, the technical solution proposed by the present invention can adjust the setting position of the photosensitive element 33 on the circuit board 31 as needed (for example, The photosensitive element 33 is disposed closer to the light-emitting element 32 to reduce the planar area occupied by the photosensitive element 33 and the light-emitting element 32, and the tilt direction and the tilt angle of the second slope 451 are adjusted according to the position of the photosensitive element 33. The light ray 93 can be surely received by the photosensitive element 33. In the present embodiment, the preferred range of the second included angle θ 2 is 10 degrees to 20 degrees. This design can effectively control the advancing direction of the light ray 93 after being refracted from the second inclined surface 451, and ensure the sensing effect of the photosensitive element 33.
但要特別說明的是,上述關於第一夾角θ1 、第二夾角θ2 的數值範圍僅用於說明本新型的實施態樣,但不應以此限制本新型的實施範圍,只要符合上述說明內容的設計都是本新型得據以實施的範圍。However, it should be particularly noted that the above numerical ranges regarding the first angle θ 1 and the second angle θ 2 are only used to illustrate the implementation of the present invention, but should not limit the scope of implementation of the present invention, as long as the above description is met. The design of the content is the scope of the implementation of this new model.
參閱圖3、圖4,為本新型光學滑鼠100的第二較佳實施例。該第二較佳實施例與第一較佳實施例大致相 同,差別在於第二實施例中外導光部48的構造與運作機制不同於第一實施例中的外導光部47。Referring to Figures 3 and 4, a second preferred embodiment of the optical mouse 100 of the present invention is shown. The second preferred embodiment is substantially identical to the first preferred embodiment Also, the difference is that the configuration and operation mechanism of the outer light guiding portion 48 in the second embodiment is different from that of the outer light guiding portion 47 in the first embodiment.
具體來說,於第二實施例中,外導光部48的截面概呈正三角形且朝工作面91凸伸,並具有相連的一第一斜面481與一第二斜面482。其中,第一斜面481於遠離外聚光部46的方向係往遠離工作面91的方向逐漸傾斜延伸,第二斜面482則介於第一斜面481與外聚光部46之間,且於朝向外聚光部46的方向係往遠離工作面91的方向逐漸傾斜延伸。另一方面,內導光部45朝電路板31凸伸且截面概呈直角三角形,並具有一第三斜面452,該第三斜面452於朝向內聚光部44的方向係往鄰近電路板31的方向逐漸傾斜延伸。Specifically, in the second embodiment, the outer light guiding portion 48 has a substantially triangular cross section and protrudes toward the working surface 91, and has a first inclined surface 481 and a second inclined surface 482 connected thereto. The first inclined surface 481 is gradually inclined to extend away from the working surface 91 in a direction away from the outer light collecting portion 46, and the second inclined surface 482 is interposed between the first inclined surface 481 and the outer collecting portion 46, and is oriented The direction of the outer concentrating portion 46 gradually extends obliquely away from the working surface 91. On the other hand, the inner light guiding portion 45 protrudes toward the circuit board 31 and has a right-angled triangular cross section, and has a third inclined surface 452 which is directed to the adjacent circuit board 31 in the direction toward the inner light collecting portion 44. The direction gradually extends obliquely.
此處,定義第二較佳實施例中,內聚光部44的第一光軸L1 ’、外聚光部46的第二光軸L2 ’、垂直於外導光部48之第一斜面481的第一法線L3 ’以及垂直於內導光部45之第三斜面452的第二法線L4 ’。該第一光軸L1 ’係穿過外導光部48與發光元件32,該第二光軸L2 ’則穿過內導光部45。其中,本實施例第一光軸L1 ’與第一法線L3 ’之間的第一夾角θ1 ’為60度,第一斜面481與第二斜面482之間的第二夾角θ2 ’為60度,第二光軸L2 ’與第二法線L4 ’之間的第三夾角θ3 為10度至20度。Here, the definition of a second preferred embodiment, a first optical axis of the converging portion 44 of the L 1 ', the second optical axis converging portion 46 of the outer L 2', perpendicular to the light portion of the outer conductor 48 of the first a first inclined surface 481 normal L 3 'and the perpendicular to the light guide portion 45 of the third inclined surface 452 of the second normal line L 4'. The first optical axis L 1 ' passes through the outer light guiding portion 48 and the light emitting element 32, and the second optical axis L 2 ' passes through the inner light guiding portion 45. The first angle θ 1 ' between the first optical axis L 1 ′ and the first normal line L 3 ′ in the embodiment is 60 degrees, and the second angle θ 2 between the first inclined surface 481 and the second inclined surface 482 is 2 ' is 60 degrees, and the third angle θ 3 between the second optical axis L 2 ' and the second normal line L 4 ' is 10 degrees to 20 degrees.
根據上述設計,光線92’沿第一光軸L1 ’入射至第一斜面481處時,由於其入射角(第一夾角θ1 ’)為60度,大於全反射的臨界角(假設為41.8度),所以光線92在 第一斜面481處會產生反射角度為60度的全反射,並以垂直入射的方式穿過第二斜面482,而照射於工作面91。隨後,由工作面91反射的光線光線93’會大致沿第二光軸L2 ’入射內導光部45的第三斜面452,並沿預設的折射角度轉折照射於感光元件33。According to the above design, when the light ray 92' is incident on the first inclined surface 481 along the first optical axis L 1 ', the incident angle (the first included angle θ 1 ') is 60 degrees, which is larger than the critical angle of total reflection (assumed to be 41.8). Therefore, the light ray 92 generates total reflection at a first angle 481 at a reflection angle of 60 degrees, and passes through the second slope 482 in a normal incidence to illuminate the work surface 91. Subsequently, the light ray 93' reflected by the working surface 91 is incident on the third inclined surface 452 of the inner light guiding portion 45 substantially along the second optical axis L 2 ', and is irradiated to the photosensitive member 33 at a predetermined refractive angle.
因此,根據上述方式,本新型的第二實施例亦可透過內導光部45與外導光部48控制光線92’、93’轉折前進的方向,而據以實現本新型光學滑鼠100的光路設計。但要說明的是,上述第一夾角θ1 ’、第二夾角θ2 ’與第三夾角θ3 的角度範圍當可依需要而設計,只要光線的行進依照上述機制控制即可,而不以此處揭露的內容為限。Therefore, according to the above manner, the second embodiment of the present invention can also control the direction in which the light rays 92', 93' are turned forward through the inner light guiding portion 45 and the outer light guiding portion 48, thereby implementing the optical mouse 100 of the present invention. Light path design. However, it should be noted that the angular range of the first angle θ 1 ', the second angle θ 2 ′, and the third angle θ 3 may be designed as needed, as long as the light travels according to the above mechanism, instead of The content disclosed here is limited.
綜上所述,藉由本新型提出的導光元件4之結構與光傳導設計,可讓發光元件32與感光元件33設置於電路板31的同一面(即下表面311),不需沿用傳統將發光元件32設置於導光元件4之側邊的設計,而能有效減少光感測模組2的平面面積,實現光學滑鼠100的微型化設計。此外,由於發光元件32與感光元件33可直接裝設於電路板31上而形成模組化的光收發單元3,便不需要在光學滑鼠100的殼體1中分別進行各個獨立元件的組裝程序,此設計能有效簡化光學滑鼠100的生產過程,而有利於光學滑鼠100的批量製造。In summary, with the structure and light-conducting design of the light guiding element 4 proposed by the present invention, the light-emitting element 32 and the photosensitive element 33 can be disposed on the same surface of the circuit board 31 (ie, the lower surface 311), without the need to follow the tradition. The design of the light-emitting element 32 on the side of the light-guiding element 4 can effectively reduce the planar area of the light-sensing module 2 and realize the miniaturization design of the optical mouse 100. In addition, since the light-emitting element 32 and the light-receiving element 33 can be directly mounted on the circuit board 31 to form the modular optical transceiver unit 3, assembly of the individual components in the housing 1 of the optical mouse 100 is not required. The program, which is designed to effectively simplify the production process of the optical mouse 100, facilitates the mass production of the optical mouse 100.
惟以上所述者,僅為本新型之較佳實施例而已,當不能以此限定本新型實施之範圍,即大凡依本新型申 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,皆仍屬本新型專利涵蓋之範圍內。However, the above is only the preferred embodiment of the present invention, and when it is not possible to limit the scope of the implementation of the present invention, The simple equivalent changes and modifications made by the scope of patents and the contents of the patent specifications are still within the scope of this new patent.
100‧‧‧光學滑鼠100‧‧‧ optical mouse
41‧‧‧本體41‧‧‧Ontology
1‧‧‧殼體1‧‧‧shell
42‧‧‧內表面42‧‧‧ inner surface
11‧‧‧開口11‧‧‧ openings
43‧‧‧外表面43‧‧‧ outer surface
2‧‧‧光感測模組2‧‧‧Light sensing module
44‧‧‧內聚光部44‧‧‧Intra-light department
3‧‧‧光收發單元3‧‧‧Optical transceiver unit
45‧‧‧內導光部45‧‧‧Inside Light Guide
31‧‧‧電路板31‧‧‧ boards
46‧‧‧外聚光部46‧‧‧External Light Department
311‧‧‧下表面311‧‧‧ lower surface
47‧‧‧外導光部47‧‧‧External Light Guide
32‧‧‧發光元件32‧‧‧Lighting elements
91‧‧‧工作面91‧‧‧Working face
33‧‧‧感光元件33‧‧‧Photosensitive elements
92、93‧‧‧光線92, 93‧‧‧ rays
4‧‧‧導光元件4‧‧‧Light guiding elements
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102209049U TWM463390U (en) | 2013-05-15 | 2013-05-15 | Light guide element light sensing module and optical mouse |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102209049U TWM463390U (en) | 2013-05-15 | 2013-05-15 | Light guide element light sensing module and optical mouse |
Publications (1)
Publication Number | Publication Date |
---|---|
TWM463390U true TWM463390U (en) | 2013-10-11 |
Family
ID=49772514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW102209049U TWM463390U (en) | 2013-05-15 | 2013-05-15 | Light guide element light sensing module and optical mouse |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWM463390U (en) |
-
2013
- 2013-05-15 TW TW102209049U patent/TWM463390U/en not_active IP Right Cessation
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6753653B2 (en) | Proximity sensor and electronic devices using it | |
TWI390751B (en) | Optical pointing device with integrated optical components and related electronic apparatus | |
US9696853B2 (en) | Optical touch apparatus capable of detecting displacement and optical touch method thereof | |
KR101659549B1 (en) | Light sensor | |
TWI534685B (en) | Touch screen display device | |
KR102436320B1 (en) | Proximity and illuminance sensor, portable terminal including the same | |
US8854336B2 (en) | Light guide module, optical touch module, and method of increasing a signal to noise ratio of an optical touch module | |
US20130038535A1 (en) | Optical pointing device | |
TWI587013B (en) | Optical socket and optical module | |
JP2019020575A (en) | Optical receptacle and optical module | |
US20180306715A1 (en) | Smoke-detecting photosensor | |
US20070216649A1 (en) | Method and device for optical input, and a spectroscopic lens module of the device | |
TWM463390U (en) | Light guide element light sensing module and optical mouse | |
JP5710715B2 (en) | Camera module for optical touch screen | |
CN101566886B (en) | Optical index device | |
US20090251415A1 (en) | Optical Pointing Device | |
TWI608263B (en) | Optical socket and light module with it | |
CN103229129B (en) | For the optical device of the computer external controller of form of a stroke or a combination of strokes light input | |
US20080084617A1 (en) | Optical module of the optical mice | |
TWM599415U (en) | Touch control device | |
US20240069650A1 (en) | Navigation device with improved light utilization efficiency and optical engine thereof | |
TWI533634B (en) | Optical signal transmission device | |
TWM469688U (en) | Optical orientation module | |
JP3127830U (en) | Optical module for mouse | |
KR102665950B1 (en) | tilt-improved pen-tip apparatus for an optical digital pen of multiple optical paths by interfacial reflection |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4K | Annulment or lapse of a utility model due to non-payment of fees |