TWI712829B

TWI712829B - Optical lens

Info

Publication number: TWI712829B
Application number: TW106128997A
Authority: TW
Inventors: 林君翰
Original assignee: 揚明光學股份有限公司
Priority date: 2017-08-25
Filing date: 2017-08-25
Publication date: 2020-12-11
Also published as: TW201913157A

Abstract

An optical lens comprises a first barrel, a second barrel, a first lens group, and a second lens group. The second barrel is at least partially disposed in the first barrel. The first lens group at least comprises two lenses disposed in the first barrel, wherein a lens of the first lens group is fixed to the first barrel by is hot-melt fixation. The second lens group at least comprises two lenses disposed in the second barrel.

Description

Optical lens

本發明有關於一種光學鏡頭，特別是有關於一種車用鏡頭。 The invention relates to an optical lens, in particular to a vehicle lens.

目前車用鏡頭，其鏡筒(barrel)是採用射出成型而製成，而且是一體成型，所以鏡筒的公差敏感度高，加上前述射出成型須使用對開入子模具，所以同軸度與公差也需要精密控制，否則難以維持一定的精度與穩定性。此外，裝設於鏡筒的透鏡都是使用膠材來固定。然而，車用鏡頭所處的車內環境常因日曬而變成惡劣的高溫環境，以至於膠材容易受熱而變質及龜裂，導致透鏡發生位移，甚至脫落，進而降低車用鏡頭的精度與穩定性，嚴重破壞成像品質。 At present, the barrel of the automotive lens is made by injection molding and is integrally formed. Therefore, the tolerance sensitivity of the lens barrel is high. In addition, the aforementioned injection molding must use a split sub-mold, so the coaxiality and tolerance It also needs precise control, otherwise it is difficult to maintain a certain accuracy and stability. In addition, the lenses installed in the lens barrel are all fixed with glue. However, the interior environment of the car lens is often turned into a harsh high temperature environment due to the sun, so that the plastic material is easily heated and deteriorated and cracked, causing the lens to shift or even fall off, thereby reducing the accuracy and Stability seriously damages the imaging quality.

本發明一實施例提供一種光學鏡頭，包含第一鏡筒、第二鏡筒、第一透鏡群以及第二透鏡群。第二鏡筒，至少部分設置於第一鏡筒內。第一透鏡群，至少包含兩片透鏡，設置於第一鏡筒內，其中第一透鏡群之一透鏡熱熔固定於第一鏡筒。第二透鏡群，至少包含兩片透鏡，設置於第二鏡筒內。 An embodiment of the present invention provides an optical lens including a first lens barrel, a second lens barrel, a first lens group, and a second lens group. The second lens barrel is at least partially arranged in the first lens barrel. The first lens group includes at least two lenses and is arranged in the first lens barrel, wherein a lens of the first lens group is thermally fixed to the first lens barrel. The second lens group includes at least two lenses and is arranged in the second lens barrel.

本發明一實施例提供一種光學鏡頭，包含第一鏡筒、第二鏡筒、第一透鏡群以及第二透鏡群。第二鏡筒，至少部分設置於第一鏡筒內。第一透鏡群，至少包含兩片透鏡。第二透鏡群，至少包含兩片透鏡，設置於第二鏡筒內，其中第二透鏡群之一透鏡熱熔固定於第二鏡筒。第一透鏡群和第二透鏡群包含至少三玻璃透鏡。 An embodiment of the present invention provides an optical lens including a first lens barrel, a second lens barrel, a first lens group, and a second lens group. The second lens barrel is at least partially arranged in the first lens barrel. The first lens group includes at least two lenses. The second lens group includes at least two lenses and is arranged in the second lens barrel, wherein a lens of the second lens group is thermally fixed to the second lens barrel. The first lens group and the second lens group include at least three glass lenses.

本發明一實施例提供一種光學鏡頭，包含第一鏡筒、第二鏡筒、第一透鏡群以及第二透鏡群。第二鏡筒，設置於第一鏡筒內。第一透鏡群，設置於第一鏡筒內，但設置於第二鏡筒外，且第一透鏡群至少包含一玻璃透鏡。第二透鏡群，設置於第二鏡筒內，第二透鏡群包含至少兩片透鏡。 An embodiment of the present invention provides an optical lens including a first lens barrel, a second lens barrel, a first lens group, and a second lens group. The second lens barrel is arranged in the first lens barrel. The first lens group is arranged inside the first lens barrel but outside the second lens barrel, and the first lens group includes at least one glass lens. The second lens group is arranged in the second lens barrel, and the second lens group includes at least two lenses.

本發明實施例因採用兩個鏡筒(例如第一鏡筒和第二鏡筒)來裝設多片透鏡，因此所有公差敏感度分散於這兩個鏡筒。如此，本發明能使光學鏡頭的同軸度與公差易於管控，以達到穩定良率的功效。 In the embodiment of the present invention, two lens barrels (for example, the first lens barrel and the second lens barrel) are used to install multiple lenses, so all tolerance sensitivity is dispersed in these two lens barrels. In this way, the present invention can make the coaxiality and tolerance of the optical lens easy to control, so as to achieve the effect of stabilizing the yield.

為讓本發明特徵明顯易懂，下文特舉較佳實施例，並配合圖式，作詳細說明。 In order to make the features of the present invention obvious and easy to understand, the following will specifically cite preferred embodiments, combined with the drawings, for detailed description.

100、200:光學鏡頭 100, 200: optical lens

110、210:第一透鏡群 110, 210: the first lens group

111、112、113、114、121、122、211、212、213、214、221、222:透鏡 111, 112, 113, 114, 121, 122, 211, 212, 213, 214, 221, 222: lens

120、220:第二透鏡群 120, 220: second lens group

131、231:第一鏡筒 131, 231: The first tube

131a、132a、231a、232a:固定部 131a, 132a, 231a, 232a: fixed part

131p、132p、231p、232p:組裝基準面 131p, 132p, 231p, 232p: assembly reference plane

132、232:第二鏡筒 132, 232: second lens tube

140、240:間隔環 140, 240: spacer ring

圖1繪示本發明一實施例之光學鏡頭的剖面示意圖。 FIG. 1 is a schematic cross-sectional view of an optical lens according to an embodiment of the invention.

圖2繪示本發明另一實施例之光學鏡頭的剖面示意圖。 2 is a schematic cross-sectional view of an optical lens according to another embodiment of the invention.

請參閱圖1，光學鏡頭100包含第一透鏡群110、第二透鏡群120、第一鏡筒131以及第二鏡筒132。第一透鏡群110至少包含兩片透鏡，而第二透鏡群120至少包含兩片透鏡。以圖1為例，第一透鏡群110包含四片透鏡111、112、113及114，而第二透鏡群120包含兩片透鏡121及122，但本發明不以此為限制。 Please refer to FIG. 1, the optical lens 100 includes a first lens group 110, a second lens group 120, a first lens barrel 131 and a second lens barrel 132. The first lens group 110 includes at least two lenses, and the second lens group 120 includes at least two lenses. Taking FIG. 1 as an example, the first lens group 110 includes four lenses 111, 112, 113, and 114, and the second lens group 120 includes two lenses 121 and 122, but the invention is not limited thereto.

第一透鏡群110與第二透鏡群120包含至少三片玻璃透鏡。例如，第一透鏡群110的透鏡111與114為玻璃透鏡，而第二透鏡群120的透鏡121為玻璃透鏡，但本發明不以此為限制。或者，第一透鏡群110與第二透鏡群120皆為玻璃透鏡。玻璃透鏡能耐高溫，所以在高溫環境中不易變質。因此，相較於塑膠透鏡，玻璃透鏡具有穩定性高及耐高溫的優點，適合用於惡劣又高溫的車內環境中。 The first lens group 110 and the second lens group 120 include at least three glass lenses. For example, the lenses 111 and 114 of the first lens group 110 are glass lenses, and the lens 121 of the second lens group 120 is glass lenses, but the present invention is not limited thereto. Alternatively, both the first lens group 110 and the second lens group 120 are glass lenses. The glass lens can withstand high temperature, so it is not easy to deteriorate in high temperature environment. Therefore, compared to plastic penetration Mirrors and glass lenses have the advantages of high stability and high temperature resistance, and are suitable for use in harsh and high-temperature interior environments.

第一透鏡群110設置於第一鏡筒131內，但設置於第二鏡筒132外。第二透鏡群120設置於第二鏡筒132內，其中第二鏡筒132設置或至少部分設置於第一鏡筒131內。在一實施例中，第一透鏡群110之至少一透鏡熱熔固定於第一鏡筒131。以圖1為例，第一透鏡群110的透鏡111熱熔固定於第一鏡筒131的一端(左端)，但本發明不以此為限制。第一鏡筒131具有固定部131a，而固定部131a是熱熔第一鏡筒131邊緣而形成，其中固定部131a覆蓋透鏡111邊緣。如此，透鏡111得以熱熔固定於第一鏡筒131的一端。同理，第二透鏡群120也有至少一透鏡熱熔固定於第二鏡筒132。以圖1為例，第二透鏡群120的透鏡122熱熔固定於第二鏡筒132的一端(右端)，其中第二鏡筒132也具有覆蓋透鏡122邊緣的固定部132a，且固定部132a也是熱熔第二鏡筒132邊緣而形成。 The first lens group 110 is arranged in the first lens barrel 131 but is arranged outside the second lens barrel 132. The second lens group 120 is arranged in the second lens barrel 132, wherein the second lens barrel 132 is arranged or at least partially arranged in the first lens barrel 131. In one embodiment, at least one lens of the first lens group 110 is thermally fixed to the first lens barrel 131. Taking FIG. 1 as an example, the lens 111 of the first lens group 110 is thermally fixed to one end (left end) of the first lens barrel 131, but the present invention is not limited thereto. The first lens barrel 131 has a fixing portion 131 a, and the fixing portion 131 a is formed by thermally fusing the edge of the first lens barrel 131, wherein the fixing portion 131 a covers the edge of the lens 111. In this way, the lens 111 is thermally fused and fixed to one end of the first lens barrel 131. Similarly, the second lens group 120 also has at least one lens fixed to the second lens barrel 132 by heat fusion. Taking FIG. 1 as an example, the lens 122 of the second lens group 120 is thermally fixed to one end (right end) of the second lens barrel 132, wherein the second lens barrel 132 also has a fixing portion 132a covering the edge of the lens 122, and the fixing portion 132a It is also formed by thermally fusing the edge of the second lens barrel 132.

第一鏡筒131與第二鏡筒132可由射出成型來製成，且兩者可由模具搭配一根模具入子而形成。所以，相較於現有車用鏡頭，本實施例的第一鏡筒131與第二鏡筒132無須採用對開入子模具，並且更具有較佳的同軸度。其次，第一鏡筒131與第二鏡筒132是兩個獨立的元件，可由兩種模具製成，所以光學鏡頭100的所有公差敏感度能分散於第一鏡筒131與第二鏡筒132，以達到穩定生產，管控容易的功效。 The first lens barrel 131 and the second lens barrel 132 can be made by injection molding, and both can be formed by a mold and a mold. Therefore, compared with the conventional vehicle lens, the first lens barrel 131 and the second lens barrel 132 of this embodiment do not need to be split into the sub-mold, and have better coaxiality. Secondly, the first lens barrel 131 and the second lens barrel 132 are two independent components, which can be made of two molds, so all tolerance sensitivity of the optical lens 100 can be dispersed in the first lens barrel 131 and the second lens barrel 132 , In order to achieve stable production and easy control.

在製造光學鏡頭100的過程中，首先，進行透鏡121、122及第二鏡筒132的組裝。第二鏡筒132具有組裝基準面132p，而透鏡121與122從第二鏡筒132的右端依序放置於第二鏡筒132中，其中透鏡121抵靠於組裝基準面132p。在放置好透鏡121與122之後，進行熱熔固定製程，即熱熔第二鏡筒132右端的邊緣，以形成覆蓋透鏡122邊緣的固定部132a。如此，這些透鏡121與122能固定在第二鏡筒132中。 In the process of manufacturing the optical lens 100, first, the lenses 121 and 122 and the second lens barrel 132 are assembled. The second lens barrel 132 has an assembly reference surface 132p, and the lenses 121 and 122 are sequentially placed in the second lens barrel 132 from the right end of the second lens barrel 132, wherein the lens 121 abuts against the assembly reference surface 132p. After the lenses 121 and 122 are placed, a thermal fusion fixing process is performed, that is, the edge of the right end of the second lens barrel 132 is thermally fused to form a fixing portion 132 a covering the edge of the lens 122. In this way, these lenses 121 and 122 can be fixed in the second lens barrel 132.

接著，將第二鏡筒132與透鏡111至114組裝於第一鏡筒131中。第一鏡筒131具有組裝基準面131p，而透鏡114、組裝好的第二鏡筒132、透鏡113、112與111從第一鏡筒131的左端依序放置於第一鏡筒131中，其中透鏡114抵靠於組裝基準面131p。第二鏡筒132抵靠於透鏡114，且第二鏡筒132的固定部132a面向透鏡114。在放置好第二鏡筒132以及透鏡111至114之後，進行熱熔固定製程，即熱熔第一鏡筒131左端的邊緣，以形成覆蓋透鏡111邊緣的固定部131a。如此，這些透鏡111至114以及第二鏡筒132能固定在第一鏡筒131中，從而完成光學鏡頭100。 Next, the second lens barrel 132 and the lenses 111 to 114 are assembled in the first lens barrel 131. The first lens barrel 131 has an assembly reference plane 131p, and the lens 114, the assembled second lens barrel 132, the lenses 113, 112, and 111 are sequentially placed in the first lens barrel 131 from the left end of the first lens barrel 131, wherein The lens 114 abuts against the assembly reference surface 131p. The second lens barrel 132 abuts against the lens 114, and the fixing portion 132 a of the second lens barrel 132 faces the lens 114. After the second lens barrel 132 and the lenses 111 to 114 are placed, a thermal fusion fixing process is performed, that is, the edge of the left end of the first lens barrel 131 is thermally fused to form a fixing portion 131 a covering the edge of the lens 111. In this way, the lenses 111 to 114 and the second lens barrel 132 can be fixed in the first lens barrel 131 to complete the optical lens 100.

在光學鏡頭100的製造過程中，由於透鏡111至114以及第二鏡筒132都是從第一鏡筒131的一端(左端)依序放置於第一鏡筒131中，並透過承靠單一組裝基準面131p而完成組裝，因此第一透鏡群110的所有透鏡111至114依一方向置入第一鏡筒131，具有組裝簡單快速的優點，適合自動化大量生產。此外，透鏡都是採用熱熔固定的方式組裝於第一鏡筒131中，未使用任何膠材，所以相較於現有採用膠材固定的車用鏡頭，本發明的光學鏡頭100不會出現因膠材受熱而導致透鏡發生位移或脫落的情形，因而具有較佳的精度與穩定性，同時能維持或提升成像品質。此外，在一實施例中，光學鏡頭100更包含間隔環140，其設置於第一鏡筒131內，其中間隔環140可夾在透鏡112與113之間，而透鏡113、114以及第二鏡筒132固定於組裝基準面131p與間隔環140之間。不過，在其他實施例中，光學鏡頭100可以不包含間隔環140，本發明不以此為限制。 During the manufacturing process of the optical lens 100, the lenses 111 to 114 and the second lens barrel 132 are placed in the first lens barrel 131 sequentially from one end (left end) of the first lens barrel 131, and are assembled by supporting a single assembly. The assembly is completed by the reference plane 131p, so all the lenses 111 to 114 of the first lens group 110 are placed in the first lens barrel 131 in one direction, which has the advantages of simple and fast assembly, and is suitable for automated mass production. In addition, the lenses are assembled in the first lens barrel 131 by means of hot-melt fixing, and no glue is used. Therefore, compared with the existing car lens fixed by glue, the optical lens 100 of the present invention has no problems. The plastic material is heated to cause the lens to shift or fall off, so it has better accuracy and stability, while maintaining or improving the image quality. In addition, in one embodiment, the optical lens 100 further includes a spacer ring 140 disposed in the first lens barrel 131, wherein the spacer ring 140 can be sandwiched between the lenses 112 and 113, and the lenses 113, 114 and the second lens The cylinder 132 is fixed between the assembly reference surface 131 p and the spacer ring 140. However, in other embodiments, the optical lens 100 may not include the spacer ring 140, and the present invention is not limited thereto.

圖2繪示本發明另一實施例之光學鏡頭的剖面示意圖。請參閱圖2，其所示的光學鏡頭200與前述光學鏡頭100相似，以下介紹光學鏡頭200與100兩者差異之處，相同之處不再重複敘述。 2 is a schematic cross-sectional view of an optical lens according to another embodiment of the invention. Please refer to FIG. 2, the optical lens 200 shown therein is similar to the aforementioned optical lens 100. The differences between the optical lenses 200 and 100 are described below, and the similarities will not be repeated.

在光學鏡頭200中，第一透鏡群210與第二鏡筒232皆設置於第一鏡筒231內，而第二透鏡群220設置於第二鏡筒232內。第一透鏡群210包含透鏡 211、212、213及214，其中透鏡214抵靠於第一鏡筒231的組裝基準面231p，而第一鏡筒231的固定部231a覆蓋透鏡211邊緣，以使透鏡211熱熔固定於第一鏡筒231的一端。第二透鏡群220包含透鏡221與222，其中透鏡222抵靠於第二鏡筒232的組裝基準面232p，而第二鏡筒232的固定部232a覆蓋透鏡221邊緣，以使透鏡221熱熔固定於第二鏡筒232的一端。不同於前述實施例的光學鏡頭100，第二鏡筒232的固定部232a面向方向不同於前述實施例的固定部132a，其中固定部232a面向透鏡213。此外，在圖2所示的實施例中，光學鏡頭200還包含設置於第一鏡筒231內的間隔環240，其中間隔環240抵靠於第二鏡筒232，並夾在第二鏡筒232與透鏡213之間。不過，在其他實施例中，光學鏡頭200可不包含間隔環240，所以本發明不以此為限制。 In the optical lens 200, the first lens group 210 and the second lens barrel 232 are both arranged in the first lens barrel 231, and the second lens group 220 is arranged in the second lens barrel 232. The first lens group 210 includes lenses 211, 212, 213, and 214, wherein the lens 214 abuts the assembly reference surface 231p of the first lens barrel 231, and the fixing portion 231a of the first lens barrel 231 covers the edge of the lens 211, so that the lens 211 is thermally fixed to the first lens barrel 231 One end of the lens barrel 231. The second lens group 220 includes lenses 221 and 222, wherein the lens 222 abuts against the assembly reference surface 232p of the second lens barrel 232, and the fixing portion 232a of the second lens barrel 232 covers the edge of the lens 221, so that the lens 221 is fixed by heat At one end of the second lens barrel 232. Different from the optical lens 100 of the foregoing embodiment, the facing direction of the fixing portion 232a of the second lens barrel 232 is different from the fixing portion 132a of the foregoing embodiment, wherein the fixing portion 232a faces the lens 213. In addition, in the embodiment shown in FIG. 2, the optical lens 200 further includes a spacer ring 240 disposed in the first lens barrel 231, wherein the spacer ring 240 abuts against the second lens barrel 232 and is clamped to the second lens barrel. 232 and lens 213. However, in other embodiments, the optical lens 200 may not include the spacer ring 240, so the present invention is not limited thereto.

綜上所述，本發明採用兩個鏡筒(例如第一鏡筒和第二鏡筒)來裝設多片透鏡，因而使得所有公差敏感度分散於這兩個鏡筒，進而易於管控光學鏡頭的同軸度與公差易於管控，以達到穩定良率的功效。此外，本發明的光學鏡頭可採用熱熔固定來裝設所有透鏡，以取代傳統的膠材固定，所以本發明的光學鏡頭不會出現膠材受熱變質及龜裂的情形。相較於習知車用鏡頭，本發明能維持或提升光學鏡頭在高溫車內環鏡中的成像品質。 In summary, the present invention uses two lens barrels (for example, the first lens barrel and the second lens barrel) to install multiple lenses, so that all tolerance sensitivity is dispersed in these two lens barrels, and it is easy to control the optical lens. The coaxiality and tolerance are easy to control to achieve the effect of stable yield. In addition, the optical lens of the present invention can be fixed by hot melt to install all the lenses instead of the traditional glue fixing. Therefore, the optical lens of the present invention will not suffer from thermal deterioration and cracking of the glue. Compared with the conventional vehicle lens, the present invention can maintain or improve the imaging quality of the optical lens in the high temperature car interior ring mirror.

雖然本發明已以較佳實施例揭露如上，然並非用以限定本發明，本發明所屬技術領域中具有通常知識者，在不脫離本發明精神和範圍，當可作些許更動與潤飾，因此本發明保護範圍當視後附之申請專利範圍界定者為準。 Although the present invention has been disclosed in preferred embodiments as above, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field of the present invention can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of invention protection shall be subject to the definition of the scope of patent application attached.

100:光學鏡頭 100: Optical lens

110:第一透鏡群 110: The first lens group

111、112、113、114、121、122:透鏡 111, 112, 113, 114, 121, 122: lens

120:第二透鏡群 120: second lens group

131:第一鏡筒 131: The first lens tube

131a、132a:固定部 131a, 132a: fixed part

131p、132p:組裝基準面 131p, 132p: assembly reference plane

132:第二鏡筒 132: second lens tube

140:間隔環 140: Spacer ring

Claims

An optical lens comprising: a first lens barrel; a second lens barrel at least partially arranged in the first lens barrel; a first lens group, including at least two lenses, arranged in the first lens barrel; And a second lens group, including at least two lenses, arranged in the second lens barrel, wherein a lens of the first lens group is thermally fixed to the first lens barrel.

The optical lens according to claim 1, wherein a lens of the second lens group is thermally fixed to the second lens barrel.

An optical lens comprising: a first lens barrel; a second lens barrel at least partially arranged in the first lens barrel; a first lens group, including at least two lenses, arranged in the first lens barrel; A second lens group, including at least two lenses, is disposed in the second lens barrel, wherein a lens of the second lens group is thermally fixed to the second lens barrel, and the first lens group and the second lens group The lens group includes at least three glass lenses.

The optical lens according to claim 3, wherein a lens of the first lens group is thermally fixed to the first lens barrel.

The optical lens according to any one of claims 1, 2, and 4, wherein the lens of the first lens group is thermally fixed to one end of the first lens barrel.

An optical lens, comprising: a first lens barrel; a second lens barrel arranged in the first lens barrel; A first lens group is arranged in the first lens barrel but is arranged outside the second lens barrel, and the first lens group includes at least one glass lens, wherein a lens of the first lens group is thermally fixed to The first lens barrel; and a second lens group disposed in the second lens barrel, and the second lens group includes at least two lenses.

The optical lens according to claim 6, which satisfies one of the following conditions: (1) a lens of the second lens group is thermally fixed to the second lens barrel; and (2) the first lens The group and the second lens group include at least three glass lenses.

The optical lens according to any one of claims 1 to 4, 6, and 7, further comprising: a spacer ring arranged in the first lens barrel.

The optical lens according to any one of claims 1 to 4, 6, and 7, wherein the first lens group and the second lens group are both glass lenses.

The optical lens according to any one of claims 1 to 4, 6, 7, wherein all the lenses of the first lens group are inserted into the first lens barrel in one direction.