TWI656372B - Lens with holding frame and lens with holding frame - Google Patents
Lens with holding frame and lens with holding frame Download PDFInfo
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- TWI656372B TWI656372B TW106142683A TW106142683A TWI656372B TW I656372 B TWI656372 B TW I656372B TW 106142683 A TW106142683 A TW 106142683A TW 106142683 A TW106142683 A TW 106142683A TW I656372 B TWI656372 B TW I656372B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
- C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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Abstract
本發明提供一種能夠抑制透鏡素材於主體模具內之位置偏移，藉此能夠製造無偏差之所期望之形狀之透鏡的附保持框之透鏡之製造方法。 The present invention provides a method of manufacturing a lens with a holding frame capable of suppressing a positional shift of a lens material in a main mold, thereby producing a lens having a desired shape without deviation.
本發明之附保持框之透鏡之製造方法具有以下步驟：於主體模具內配置具備與主體模具之內表面形狀對應之外表面形狀之中空的保持框；以下部位於保持框之內側之方式，將透鏡素材配置於上模具與下模具之間；及藉由上模具與下模具擠壓透鏡素材，而於透鏡素材之上表面及下表面分別形成光學功能面，並且將透鏡素材之側面壓延至密接於主體模具之內表面或保持框之內表面。 The method for manufacturing a lens with a holding frame according to the present invention has a step of disposing a hollow holding frame having a surface shape corresponding to the inner surface shape of the main body mold in the main mold; the lower portion is located inside the holding frame, and The lens material is disposed between the upper mold and the lower mold; and the lens material is pressed by the upper mold and the lower mold to form an optical functional surface on the upper surface and the lower surface of the lens material, and the side surface of the lens material is calendered to the close contact On the inner surface of the main mold or the inner surface of the holding frame.
Description
本發明係關於一種於透鏡之側面之一部分配置有保持框的附保持框之透鏡及附保持框之透鏡之製造方法。 The present invention relates to a method of manufacturing a lens with a holding frame for holding a frame and a lens for holding a frame on one side of the lens.
於先前之透鏡製造方法中，係藉由將作為透鏡素材之毛胚配置於主體模具內，並利用上模具及下模具自上下進行加壓，而形成具備與上模具及下模具之形狀對應之光學功能面之透鏡。毛胚例如具有角柱形狀，且以其底面之中心位置與下模具之成形面之中心位置一致的方式配置於主體模具內。 In the prior lens manufacturing method, the blank as the lens material is placed in the main mold, and the upper mold and the lower mold are pressed from the upper and lower sides to form a shape corresponding to the shape of the upper mold and the lower mold. Lens for optical functional surfaces. The blank has, for example, a corner column shape, and is disposed in the main body mold such that the center position of the bottom surface coincides with the center position of the molding surface of the lower mold.
[專利文獻1]日本專利特開2003-206144號公報 [Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-206144
[專利文獻2]日本專利特開平5-294645號公報 [Patent Document 2] Japanese Patent Laid-Open No. Hei 5-294645
[專利文獻3]日本專利特開2002-006189號公報 [Patent Document 3] Japanese Patent Laid-Open Publication No. 2002-006189
[專利文獻4]日本專利特開平3-265529號公報 [Patent Document 4] Japanese Patent Laid-Open No. Hei 3-265529
然而，毛胚係以於與主體模具之內表面之間具有間隙之方式配置，因此存在於將毛胚配置於主體模具內之後毛胚之中心位置自下模具之中心特定位置偏移的情況。若以此種狀態進行成形，則形成相對於設計形狀具 有偏差之形狀之透鏡，又，存在因於主體模具內將毛胚不均等地配置而導致產生凹痕之問題。 However, since the blank is disposed so as to have a gap with the inner surface of the main mold, there is a case where the center position of the blank is displaced from the center specific position of the lower mold after the blank is placed in the main mold. If the molding is performed in this state, it is formed with respect to the design shape. In the case of a lens having a deviated shape, there is a problem that dents are generated due to uneven arrangement of the blanks in the main mold.
另一方面，於專利文獻1~4之製造方法中，係藉由將構成鏡筒或支座之材料配置於毛胚與主體模具之內表面之間，與毛胚一同一體地成形，從而製造鏡筒或支座與透鏡成為一體之光學構件。藉此，能夠不與透鏡接觸地處理光學構件，因此能夠減小對其後之安裝步驟等之負擔。然而，以此方式製造之光學構件由於側面被鏡筒或支座覆蓋，故而存在於成形後之安裝中難以確保定位之精度之情況。 On the other hand, in the manufacturing methods of Patent Documents 1 to 4, the material constituting the lens barrel or the holder is placed between the blank and the inner surface of the main mold, and is formed in the same manner as the blank. An optical member in which the lens barrel or the holder is integrated with the lens. Thereby, the optical member can be processed without coming into contact with the lens, so that the burden on the subsequent mounting steps and the like can be reduced. However, since the optical member manufactured in this manner is covered by the lens barrel or the holder, it is difficult to ensure the accuracy of positioning in the post-forming installation.
因此，本發明之目的在於提供一種能夠抑制透鏡素材於主體模具內之位置偏移，藉此能夠製造無偏差之所期望之形狀之透鏡的附保持框之透鏡之製造方法。又，本發明之目的在於提供一種可實現以透明之透鏡之外表面為基準之定位，藉此能夠確保較高之安裝精度的附保持框之透鏡及附保持框之透鏡之製造方法。進而，本發明之目的在於提供一種容易操作、且可實現以外表面為基準之定位從而能夠確保較高之精度之附保持框之透鏡。 Accordingly, it is an object of the present invention to provide a method of manufacturing a lens with a holding frame capable of suppressing a positional shift of a lens material in a main mold, thereby producing a lens having a desired shape without deviation. Further, an object of the present invention is to provide a lens with a holding frame and a method for manufacturing a lens with a holding frame which can achieve positioning with respect to the outer surface of a transparent lens, thereby ensuring high mounting accuracy. Further, it is an object of the present invention to provide a lens having a holding frame which is easy to handle and which can be positioned on the outer surface as a reference to ensure high precision.
為了解決上述課題，本發明之附保持框之透鏡之特徵在於：於透鏡之上表面及下表面分別形成有光學功能面，且以覆蓋透鏡之下部之側面之方式一體地形成有保持框。 In order to solve the above problems, the lens with a holding frame of the present invention is characterized in that an optical functional surface is formed on each of the upper surface and the lower surface of the lens, and a holding frame is integrally formed so as to cover the side surface of the lower portion of the lens.
藉此，由保持框覆蓋透鏡，因此，於在製造附保持框之透鏡之後進行之安裝或檢查中容易操作，又，若使用光之透過性較低之材料作為保持框，則防止漫反射光以外之外界光自透鏡之側面入射，因此能夠抑制雜訊光之產生。進而，可實現以不被保持框覆蓋之透鏡上部之外表面為基準之 定位或檢查，藉此能夠以較高之精度進行安裝或檢查。 Thereby, the lens is covered by the holding frame, and therefore, it is easy to operate in the mounting or inspection after the lens with the holding frame is attached, and if the material having a low light transmittance is used as the holding frame, the diffused reflection light is prevented. The outer boundary light is incident from the side of the lens, so that generation of noise light can be suppressed. Further, it can be realized based on the outer surface of the upper portion of the lens that is not covered by the holding frame. Positioning or inspection, thereby enabling installation or inspection with high precision.
於本發明之附保持框之透鏡中，較佳為透鏡具有矩形狀之平面形狀。 In the lens with a holding frame of the present invention, it is preferred that the lens has a rectangular planar shape.
藉此，能夠以較高之精度利用透鏡之角部進行定位或檢查。 Thereby, it is possible to perform positioning or inspection using the corner portion of the lens with high precision.
於本發明之附保持框之透鏡中，較佳為將上述下表面中之未形成光學功能面之區域之至少一部分由保持框覆蓋。 In the lens with a holding frame of the present invention, it is preferable that at least a part of the region of the lower surface on which the optical functional surface is not formed is covered by the holding frame.
藉此，組裝或檢查時易於夾緊，因此容易操作。 Thereby, it is easy to clamp during assembly or inspection, and thus it is easy to handle.
其次，本發明之附保持框之透鏡之製造方法的特徵在於具有以下步驟：於主體模具內配置具備與主體模具之內表面形狀對應之外表面形狀之中空的保持框；以一部分位於保持框之內側之方式，將透鏡素材配置於上模具與下模具之間；及藉由上模具與下模具擠壓透鏡素材，而於透鏡素材之上表面及下表面分別形成光學功能面，並且將透鏡素材之側面壓延至密接於主體模具之內表面或保持框之內表面。 Next, the method for manufacturing a lens with a holding frame according to the present invention is characterized by the step of disposing a hollow holding frame having a surface shape corresponding to the inner surface shape of the main body mold in the main body mold; In the inner side, the lens material is disposed between the upper mold and the lower mold; and the lens material is pressed by the upper mold and the lower mold, and optical functional surfaces are respectively formed on the upper surface and the lower surface of the lens material, and the lens material is formed The sides are calendered to adhere to the inner surface of the body mold or to the inner surface of the retaining frame.
藉此，能夠抑制透鏡素材於主體模具內之位置偏移，因此能夠製造抑制凹痕之產生且為無偏差之所期望之形狀的透鏡。又，由於透鏡之上部不被保持框覆蓋，故而可實現以透鏡之外表面為基準之定位或檢查，藉此能夠以較高之精度進行安裝或檢查。進而，由於以保持框覆蓋透鏡，故而於在製造附保持框之透鏡之後進行之安裝檢查中容易操作，又，若使用光之透過性較低之材料作為保持框，則會防止漫反射光以外之外界光自透鏡之側面入射，因此能夠抑制雜訊光之產生。 Thereby, it is possible to suppress the positional shift of the lens material in the main mold, and therefore it is possible to manufacture a lens which suppresses the occurrence of the dent and which has a desired shape without deviation. Further, since the upper portion of the lens is not covered by the holding frame, positioning or inspection based on the outer surface of the lens can be realized, whereby the mounting or inspection can be performed with high precision. Further, since the lens is covered by the holding frame, it is easy to handle the mounting inspection after the lens having the holding frame is attached, and if a material having a low light transmittance is used as the holding frame, it is prevented from being diffused and reflected. The external light is incident from the side of the lens, so that the generation of noise light can be suppressed.
於本發明之附保持框之透鏡之製造方法中，較佳為主體模具之內表面形狀於俯視下為矩形。 In the method of manufacturing a lens with a holding frame according to the present invention, it is preferable that the inner surface shape of the main body mold is rectangular in plan view.
藉此，能夠以較高之精度利用透鏡之角部進行定位或檢查。 Thereby, it is possible to perform positioning or inspection using the corner portion of the lens with high precision.
於本發明之附保持框之透鏡及附保持框之透鏡之製造方法中，較佳為保持框係以金屬形成。 In the method of manufacturing the lens of the holding frame and the lens with the holding frame of the present invention, it is preferable that the holding frame is formed of metal.
藉此，於在製造附保持框之透鏡之後進行之安裝或檢查中容易操作，又，防止漫反射光以外之外界光自透鏡之側面入射，因此能夠抑制雜訊光之產生。 Thereby, it is easy to operate in the mounting or inspection after the lens with the holding frame is manufactured, and the outer boundary light other than the diffused reflection light is prevented from entering from the side surface of the lens, so that the generation of the noise light can be suppressed.
根據本發明，能夠抑制透鏡素材於主體模具內之位置偏移，藉此能夠製造無偏差之所期望之形狀之透鏡。進而，可實現以透明之透鏡之外表面為基準之定位，且容易操作，因此能夠確保較高之安裝精度。 According to the present invention, it is possible to suppress the positional shift of the lens material in the main body mold, whereby the lens having the desired shape without deviation can be manufactured. Further, positioning based on the outer surface of the transparent lens can be realized, and the operation can be easily performed, so that high mounting accuracy can be ensured.
10‧‧‧透鏡 10‧‧‧ lens
11‧‧‧凸面 11‧‧ ‧ convex
12‧‧‧凸面 12‧‧ ‧ convex
13‧‧‧上表面 13‧‧‧ upper surface
14‧‧‧下表面 14‧‧‧ Lower surface
15‧‧‧側面 15‧‧‧ side
16‧‧‧邊 16‧‧‧ side
17‧‧‧角部 17‧‧‧ corner
20‧‧‧保持框 20‧‧‧ Keep box
21‧‧‧外側面 21‧‧‧Outside
22‧‧‧底面 22‧‧‧ bottom
23‧‧‧內側面 23‧‧‧ inside side
24‧‧‧開口部 24‧‧‧ openings
31‧‧‧主體模具 31‧‧‧ body mold
31a‧‧‧內表面 31a‧‧‧ inner surface
32‧‧‧上模具 32‧‧‧Upper mold
32a‧‧‧凹面部 32a‧‧‧ concave face
32b‧‧‧平面 32b‧‧‧ plane
32d‧‧‧外表面 32d‧‧‧ outer surface
33‧‧‧下模具 33‧‧‧ Lower mold
33a‧‧‧凹面部 33a‧‧‧ concave face
33b‧‧‧平面 33b‧‧‧ plane
33d‧‧‧外表面 33d‧‧‧ outer surface
40‧‧‧透鏡素材 40‧‧‧Lens material
50‧‧‧透鏡 50‧‧‧ lens
51‧‧‧凸面 51‧‧‧ convex
52‧‧‧凸面 52‧‧ ‧ convex
53‧‧‧上表面 53‧‧‧ upper surface
54‧‧‧下表面 54‧‧‧ lower surface
55‧‧‧側面 55‧‧‧ side
60‧‧‧保持框 60‧‧‧ Keep box
61‧‧‧外側面 61‧‧‧Outside
62‧‧‧下表面 62‧‧‧ lower surface
63‧‧‧內側面 63‧‧‧ inside side
64‧‧‧開口部 64‧‧‧ openings
L10‧‧‧附保持框之透鏡 L10‧‧‧with lens holding frame
L20‧‧‧附保持框之透鏡 L20‧‧‧with lens holding frame
X‧‧‧方向 X‧‧‧ direction
Y‧‧‧方向 Y‧‧‧ direction
Z‧‧‧方向 Z‧‧‧ direction
圖1(A)係表示本發明之實施形態之附保持框之透鏡之構成的俯視圖，圖1(B)係附保持框之透鏡之前視圖，圖1(C)係附保持框之透鏡之仰視圖。 Fig. 1(A) is a plan view showing a configuration of a lens with a holding frame according to an embodiment of the present invention, Fig. 1(B) is a front view of a lens with a holding frame, and Fig. 1(C) is a bottom view of a lens with a holding frame. Figure.
圖2係表示於本發明之實施形態之製造方法中使用之模具之構成的剖視圖，且係表示加壓成形前之狀態之圖。 Fig. 2 is a cross-sectional view showing a configuration of a mold used in the production method of the embodiment of the present invention, and is a view showing a state before press forming.
圖3(A)係表示保持框之構成之剖視圖，圖3(B)係表示保持框之構成之俯視圖。 Fig. 3(A) is a cross-sectional view showing a configuration of a holding frame, and Fig. 3(B) is a plan view showing a configuration of a holding frame.
圖4係表示於本發明之實施形態之製造方法中使用之模具之構成的剖視圖，且係表示加壓成形後之狀態之圖。 Fig. 4 is a cross-sectional view showing a configuration of a mold used in the production method of the embodiment of the present invention, and is a view showing a state after press forming.
圖5(A)係表示變化例之附保持框之透鏡之構成的俯視圖，圖5(B)係附保持框之透鏡之前視圖，圖5(C)係附保持框之透鏡之仰視圖。 Fig. 5(A) is a plan view showing a configuration of a lens with a holding frame according to a modification, Fig. 5(B) is a front view of a lens with a holding frame, and Fig. 5(C) is a bottom view of a lens with a holding frame.
以下，一面參照圖式，一面對本發明之實施形態之附保持框之透 鏡、及該附保持框之透鏡之製造方法進行詳細說明。 Hereinafter, referring to the drawings, a cover frame of an embodiment of the present invention is faced. The mirror and the method of manufacturing the lens with the holding frame will be described in detail.
圖1(A)係表示本實施形態之附保持框之透鏡L10之構成的俯視圖，圖1(B)係附保持框之透鏡L10之前視圖，圖1(C)係附保持框之透鏡L10之仰視圖。此處，如圖1(A)、(C)所示，當沿著Z方向觀察時附保持框之透鏡L10之外形為正方形狀。又，沿著Y方向觀察之後視圖與前視圖對稱，進而，左右之側視圖亦與前視圖對稱。又，於各圖中，示出X-Y-Z座標作為基準座標。Z方向係沿著上下方向之方向，X-Y面係與Z方向正交之面。於以下之說明中，有時將沿著Z方向觀察之狀態稱為俯視。 Fig. 1(A) is a plan view showing a configuration of a lens L10 with a holding frame according to the embodiment, Fig. 1(B) is a front view of a lens L10 with a holding frame, and Fig. 1(C) is a lens L10 with a holding frame. Bottom view. Here, as shown in FIGS. 1(A) and (C), the lens L10 attached to the holding frame is formed in a square shape when viewed in the Z direction. Further, the rear view is symmetrical with the front view as viewed in the Y direction, and the left and right side views are also symmetrical with the front view. Moreover, in each figure, the X-Y-Z coordinate is shown as a reference coordinate. The Z direction is in the direction of the up and down direction, and the X-Y plane is the plane orthogonal to the Z direction. In the following description, a state observed in the Z direction is sometimes referred to as a plan view.
如圖1(A)、(B)、(C)所示，附保持框之透鏡L10構成平面形狀為正方形之大致角柱形狀，且具備透鏡10、及於透鏡10之側面15之下部一體地形成之保持框20。此處，附保持框之透鏡L10之平面形狀亦可設為正方形以外之矩形狀。 As shown in FIGS. 1(A), (B), and (C), the lens L10 with a holding frame is formed into a substantially angular column shape having a square shape in plan view, and is provided with a lens 10 and integrally formed at a lower portion of the side surface 15 of the lens 10. Hold box 20. Here, the planar shape of the lens L10 with the holding frame may be a rectangular shape other than a square.
於透鏡10之上表面13形成有向上側突出之第1凸面11作為光學功能面，於下表面14形成有向下側突出之第2凸面12作為光學功能面。如圖1(A)所示，第1凸面11於平面形狀下，係以中心與上表面13一致之方式形成，同樣地，如圖1(C)所示，第2凸面12係以中心與下表面14一致之方式形成。此處，2個凸面11、12之形狀、配置、數量可根據透鏡之規格而任意設定，為球面、非球面均可。又，亦可為凸面以外之形狀，例如凹面。進而，亦可為上表面13與下表面14之一者為不設置凸面之形狀。 A first convex surface 11 that protrudes upward is formed on the upper surface 13 of the lens 10 as an optical functional surface, and a second convex surface 12 that protrudes downward is formed on the lower surface 14 as an optical functional surface. As shown in Fig. 1(A), the first convex surface 11 is formed in such a manner that the center and the upper surface 13 coincide with each other in the planar shape. Similarly, as shown in Fig. 1(C), the second convex surface 12 is centered and The lower surface 14 is formed in a uniform manner. Here, the shape, arrangement, and number of the two convex surfaces 11 and 12 can be arbitrarily set according to the specifications of the lens, and may be spherical or aspherical. Further, it may be a shape other than the convex surface, for example, a concave surface. Further, one of the upper surface 13 and the lower surface 14 may have a shape in which no convex surface is provided.
如圖1(B)、(C)所示，透鏡10之側面15中之下部之側面係由保持框20覆蓋，保持框20與透鏡10之側面15一體地形成。保持框20形成沿著Z方向貫通之中空之框形狀(參照圖3(A)、(B))，其平面形狀形成外側面21與透鏡10之外形形狀一致之正方形。即，如圖1(B)所示，透鏡10之側面15與 保持框20之外側面21形成同一平面。又，如圖1(c)所示，內側面23之平面形狀成為與外側面21同心狀之正方形，且形成有於Z方向上貫通之開口部24。該開口部24相對於透鏡10之2個凸面11、12其中心位置相同。 As shown in FIGS. 1(B) and (C), the side surface of the lower portion of the side surface 15 of the lens 10 is covered by the holding frame 20, and the holding frame 20 is integrally formed with the side surface 15 of the lens 10. The holding frame 20 has a hollow frame shape that penetrates in the Z direction (see FIGS. 3(A) and (B)), and its planar shape forms a square in which the outer side surface 21 and the outer shape of the lens 10 are identical in shape. That is, as shown in FIG. 1(B), the side 15 of the lens 10 is The outer side faces 21 of the holding frame 20 form the same plane. Further, as shown in FIG. 1(c), the planar shape of the inner side surface 23 is a square which is concentric with the outer side surface 21, and an opening portion 24 penetrating in the Z direction is formed. The opening portion 24 has the same center position with respect to the two convex surfaces 11 and 12 of the lens 10.
另一方面，透鏡10之側面15中之上部未被保持框20覆蓋。因此，成為透鏡10之上表面13與側面15之交界的4個邊16、及該等邊之4個角部17未被保持框20覆蓋而露出。該等角部17各自以呈直角之方式設計，能夠用於製造附保持框之透鏡L10後之安裝用的定位或檢查。例如，能夠向角部17賦予測定光，根據其反射光之強度或角度而精度良好地進行定位或確認姿勢。 On the other hand, the upper portion of the side surface 15 of the lens 10 is not covered by the holding frame 20. Therefore, the four sides 16 which are the boundary between the upper surface 13 and the side surface 15 of the lens 10, and the four corner portions 17 of the other sides are not covered by the holding frame 20 and are exposed. The equiangular portions 17 are each designed at a right angle and can be used for the positioning or inspection for mounting after the lens L10 holding the frame. For example, it is possible to apply measurement light to the corner portion 17, and to accurately position or confirm the posture based on the intensity or angle of the reflected light.
透鏡10係藉由將作為透鏡素材之玻璃或樹脂成形而形成上述形狀。用於透鏡10之材料係使用熔點較低者，例如熔點為500~600℃左右之低熔點玻璃。 The lens 10 is formed into a shape as described above by molding glass or a resin as a lens material. The material used for the lens 10 is a low melting point glass having a lower melting point, for example, a melting point of about 500 to 600 °C.
又，保持框20係以金屬材料、例如不鏽鋼構成，使用熱膨脹係數較透鏡10用之材料為大之材料。藉此，利用以下之製造方法製造附保持框之透鏡L10時，能夠將透鏡10設為如圖1(A)~(C)所示之形狀。又，若使用光之透過性較低之材料作為保持框20，則能夠減少漫反射光以外之外界光自透鏡10之側面15入射之量，因此能夠抑制雜訊光之產生。 Further, the holding frame 20 is made of a metal material such as stainless steel, and a material having a thermal expansion coefficient larger than that of the material for the lens 10 is used. Therefore, when the lens L10 with the holding frame is manufactured by the following manufacturing method, the lens 10 can be formed into a shape as shown in FIGS. 1(A) to 1(C). Further, when a material having a low light transmittance is used as the holding frame 20, the amount of incident light other than the diffuse reflection light from the side surface 15 of the lens 10 can be reduced, so that generation of noise light can be suppressed.
其次，對附保持框之透鏡L10之製造方法進行說明。圖2係表示於本實施形態之製造方法中使用之模具之構成的剖視圖，且係表示加壓成形前之狀態之圖。圖3(A)係表示保持框20之構成之剖視圖，圖3(B)係表示保持框20之構成之俯視圖。圖4係表示於本實施形態之製造方法中使用之模具之構成的剖視圖，且係表示加壓成形後之狀態之圖。 Next, a method of manufacturing the lens L10 with a holding frame will be described. Fig. 2 is a cross-sectional view showing a configuration of a mold used in the production method of the embodiment, and is a view showing a state before press molding. 3(A) is a cross-sectional view showing the configuration of the holding frame 20, and FIG. 3(B) is a plan view showing the configuration of the holding frame 20. Fig. 4 is a cross-sectional view showing a configuration of a mold used in the production method of the embodiment, and is a view showing a state after press molding.
此處，於圖3(B)中，係以虛線表示將保持框20配置於主體模具31內 時之主體模具31及下模具33之凹面部33a之位置。 Here, in FIG. 3(B), the holding frame 20 is disposed in the main body mold 31 by a broken line. The position of the concave surface portion 33a of the main mold 31 and the lower mold 33 at this time.
用於附保持框之透鏡L10之製造之模具包含主體模具31、上模具32、及下模具33。 The mold for manufacturing the lens L10 with a holding frame includes a main body mold 31, an upper mold 32, and a lower mold 33.
如圖3(B)所示，主體模具31之外形具備正方形之框狀之平面形狀，且內表面31a亦具備正方形之平面形狀。主體模具31及下模具33固定於未圖示之基台，下模具33具備與主體模具31之內表面31a對應之平面形狀，且以其外表面33d之整個面與主體模具31之內表面31a接觸之方式配置於主體模具31內(圖2)。如圖2所示，於下模具33之上表面，於中央設置有用以形成透鏡10之第2凸面12之凹面部33a，且該凹面部33a之周圍成為平面33b。 As shown in FIG. 3(B), the main body mold 31 has a square frame shape in a square shape, and the inner surface 31a also has a square planar shape. The main mold 31 and the lower mold 33 are fixed to a base (not shown), and the lower mold 33 has a planar shape corresponding to the inner surface 31a of the main mold 31, and the entire surface of the outer surface 33d and the inner surface 31a of the main mold 31 are provided. The contact is disposed in the main body mold 31 (Fig. 2). As shown in Fig. 2, a concave surface portion 33a for forming the second convex surface 12 of the lens 10 is provided on the upper surface of the lower mold 33, and the periphery of the concave surface portion 33a is a flat surface 33b.
上模具32具備與主體模具31之內表面31a對應之平面形狀，且以其外表面32d與主體模具31之內表面31a接觸之方式於主體模具31內配置於下模具33之上方。上模具32能夠於主體模具31內沿著Z方向上下移動。於上模具32之下表面，於中央設置有用以形成透鏡10之第1凸面11之凹面部32a，且該凹面部32a之周圍成為平面32b。 The upper mold 32 has a planar shape corresponding to the inner surface 31a of the main mold 31, and is disposed above the lower mold 33 in the main mold 31 such that the outer surface 32d thereof is in contact with the inner surface 31a of the main mold 31. The upper mold 32 is movable up and down in the Z direction in the main body mold 31. On the lower surface of the upper mold 32, a concave surface portion 32a for forming the first convex surface 11 of the lens 10 is provided at the center, and the periphery of the concave surface portion 32a is a flat surface 32b.
於主體模具31內，配置如圖3(B)所示之外形具備正方形之框狀之平面形狀之保持框20。保持框20之外形形狀係與主體模具31之內表面31a之形狀對應的形狀。因此，若將保持框20於主體模具31內載置於下模具33上，則底面22與下模具33之平面33b相接，並且外側面21之整個面與主體模具31之內表面31a接觸。 A holding frame 20 having a square frame shape in a square shape as shown in FIG. 3(B) is disposed in the main mold 31. The outer shape of the holding frame 20 is a shape corresponding to the shape of the inner surface 31a of the main body mold 31. Therefore, when the holding frame 20 is placed on the lower mold 33 in the main body mold 31, the bottom surface 22 is in contact with the flat surface 33b of the lower mold 33, and the entire outer surface 21 is in contact with the inner surface 31a of the main mold 31.
於本實施形態之附保持框之透鏡L10之製造方法中，首先，將保持框20配置於主體模具31內且下模具33之平面33b上。此時，保持框20之開口部24位於下模具33之凹面部33a之上方(圖2)。 In the method of manufacturing the lens L10 with a holding frame according to the present embodiment, first, the holding frame 20 is placed in the main mold 31 and on the flat surface 33b of the lower mold 33. At this time, the opening portion 24 of the holding frame 20 is positioned above the concave surface portion 33a of the lower mold 33 (FIG. 2).
其次，如圖2所示，於主體模具31內，將角柱狀之透鏡素材40載置於下模具33上且保持框20之開口部24上。該透鏡素材40配置於上模具32與下模具33之間。透鏡素材40係下部位於保持框20之內側，此外之上部位於保持框20之上方且主體模具31之內部。 Next, as shown in FIG. 2, in the main body mold 31, the prismatic lens material 40 is placed on the lower mold 33 and held on the opening portion 24 of the frame 20. The lens material 40 is disposed between the upper mold 32 and the lower mold 33. The lower portion of the lens material 40 is located inside the holding frame 20, and the upper portion is located above the holding frame 20 and inside the main body mold 31.
繼而，利用未圖示之加熱機構將主體模具31加熱，使配置於內部之透鏡素材40加熱軟化。若於該狀態下使上模具32向下模具33側移動，則透鏡素材40受到擠壓，因此將上模具32之凹面部32a之形狀轉印至透鏡素材40而形成第1凸面11，又，將下模具33之凹面部33a之形狀轉印至透鏡素材40而形成第2凸面12。又，保持框20內之透鏡素材40係以與保持框20之內側面23強力地接觸之方式向X-Y面方向壓延並與內側面23密接。進而，又，較保持框20更上側之透鏡素材40向X-Y面方向壓延並與主體模具31之內表面31a密接(圖4)。 Then, the main body mold 31 is heated by a heating mechanism (not shown) to heat and soften the lens material 40 disposed inside. When the upper mold 32 is moved to the lower mold 33 side in this state, the lens material 40 is pressed, so that the shape of the concave surface portion 32a of the upper mold 32 is transferred to the lens material 40 to form the first convex surface 11, and The shape of the concave surface portion 33a of the lower mold 33 is transferred to the lens material 40 to form the second convex surface 12. Further, the lens material 40 in the holding frame 20 is rolled in the X-Y plane direction so as to be in strong contact with the inner side surface 23 of the holding frame 20, and is in close contact with the inner side surface 23. Further, the lens material 40 which is higher than the holding frame 20 is rolled in the X-Y plane direction and is in close contact with the inner surface 31a of the main mold 31 (FIG. 4).
於該加壓成形步驟之後，將模具冷卻並取出，藉此完成圖1(A)~(C)所示之附保持框之透鏡L10。再者，主體模具31之內表面形狀係考慮製造之附保持框之透鏡L10之外形尺寸、因透鏡素材40之冷卻所導致之收縮而決定。 After the press forming step, the mold is cooled and taken out, thereby completing the lens L10 with the holding frame shown in Figs. 1(A) to (C). Further, the inner surface shape of the main mold 31 is determined in consideration of the outer dimensions of the lens L10 to which the holding frame is attached, and the shrinkage due to the cooling of the lens material 40.
由於以如上所述之方式構成，故而根據上述實施形態起到如下效果。 Since it is configured as described above, the following effects are obtained according to the above embodiment.
(1)於在主體模具31內配置具備與主體模具31之內表面31a之形狀對應之外表面形狀的保持框21之後，將透鏡素材40配置於上模具32與下模具33之間並進行擠壓而成形為透鏡，因此，能夠抑制透鏡素材40於主體模具31內之位置偏移。藉此，能夠製造抑制凹痕之產生且為無偏差之所期望之形狀的透鏡。 (1) After the holding frame 21 having the outer surface shape corresponding to the shape of the inner surface 31a of the main mold 31 is disposed in the main mold 31, the lens material 40 is placed between the upper mold 32 and the lower mold 33 and squeezed. Since it is press-formed into a lens, the positional shift of the lens material 40 in the main body mold 31 can be suppressed. Thereby, it is possible to manufacture a lens that suppresses generation of dents and has a desired shape without deviation.
(2)由於透鏡10之上部不被保持框20覆蓋，故而可實現以透鏡10之外表面、即上表面13與側面15所構成之邊16或角部17為基準之定位或檢查，藉此能夠以較高之精度進行安裝或檢查。此處，於俯視下，將主體模具31之內表面形狀及透鏡10之外形形狀設為正方形，因此能夠進一步提高安裝或檢查之精度。 (2) Since the upper portion of the lens 10 is not covered by the holding frame 20, positioning or inspection based on the outer surface of the lens 10, that is, the side 16 or the corner portion 17 formed by the upper surface 13 and the side surface 15 can be realized. Can be installed or inspected with high precision. Here, since the inner surface shape of the main body mold 31 and the outer shape of the lens 10 are square in plan view, the accuracy of mounting or inspection can be further improved.
(3)由於以保持框20覆蓋透鏡10，故而於在製造附保持框之透鏡L10之後進行之安裝或檢查中容易操作。 (3) Since the lens 10 is covered by the holding frame 20, it is easy to operate in the mounting or inspection performed after the lens L10 with the holding frame is manufactured.
(4)若使用金屬材料以外之光之透過性較低之材料作為保持框20，則會防止漫反射光以外之外界光自透鏡10之側面15入射，因此能夠抑制雜訊光之產生。 (4) When a material having a low light transmittance other than a metal material is used as the holding frame 20, external light other than the diffuse reflection light is prevented from entering from the side surface 15 of the lens 10, so that generation of noise light can be suppressed.
(5)藉由以金屬形成保持框20，從而於安裝或檢查中容易操作，又，會防止漫反射光以外之外界光自透鏡10之側面入射，因此能夠抑制雜訊光之產生。 (5) By forming the holding frame 20 with metal, it is easy to handle during mounting or inspection, and the outer boundary light other than the diffused reflection light is prevented from entering from the side surface of the lens 10, so that generation of noise light can be suppressed.
以下，對變化例進行說明。 Hereinafter, a modification will be described.
圖5(A)係表示變化例之附保持框之透鏡L20之構成的俯視圖，圖5(B)係附保持框之透鏡L20之前視圖，圖5(C)係附保持框之透鏡L20之仰視圖。變化例之附保持框之透鏡L20與上述實施形態之附保持框之透鏡L10之不同點在於：如圖5(C)所示般，保持框60之內側面63之平面形狀與透鏡50之凸面52之平面形狀的外形匹配。因此，如圖5(B)、(C)所示，成為如下構成，即於附保持框之透鏡L20之下表面，僅透鏡50中之凸面52自保持框60之開口部64向下方突出，且凸面52之周圍由保持框60之下表面62覆蓋。換言之，透鏡50之下表面54中之未形成凸面52之區域、即於圖5(c)中由虛線表示之區域A由保持框60所覆蓋。 Fig. 5(A) is a plan view showing a configuration of a lens L20 with a holding frame according to a modification, Fig. 5(B) is a front view of the lens L20 with a holding frame, and Fig. 5(C) is a bottom view of a lens L20 with a holding frame. Figure. The lens L20 attached to the holding frame of the variation is different from the lens L10 with the holding frame of the above embodiment in that the planar shape of the inner side surface 63 of the holding frame 60 and the convex surface of the lens 50 are as shown in FIG. 5(C). The shape of the plane shape of 52 matches. Therefore, as shown in FIGS. 5B and 5C, the lower surface of the lens L20 to which the holding frame is attached is provided, and only the convex surface 52 of the lens 50 protrudes downward from the opening 64 of the holding frame 60. The circumference of the convex surface 52 is covered by the lower surface 62 of the holding frame 60. In other words, the region of the lower surface 54 of the lens 50 where the convex surface 52 is not formed, that is, the region A indicated by the broken line in FIG. 5(c) is covered by the holding frame 60.
如圖5(A)、(B)、(C)所示，附保持框之透鏡L20構成平面形狀為正方形之大致角柱形狀，且具備透鏡50、及於透鏡50之側面55之下部一體地形成之保持框60。 As shown in FIGS. 5(A), (B), and (C), the lens L20 with a holding frame is formed into a substantially angular column shape having a square shape in plan view, and is provided with a lens 50 and integrally formed at a lower portion of the side surface 55 of the lens 50. Hold frame 60.
於透鏡50之上表面53形成有向上側突出之第1凸面51作為光學功能面，於下表面54形成有向下側突出之第2凸面52作為光學功能面。如圖5(A)所示，第1凸面51於平面形狀下，係以中心與上表面53一致之方式形成，如圖5(C)所示，第2凸面52於平面形狀下，係以中心與保持框60之下表面62一致之方式形成。 A first convex surface 51 that protrudes upward is formed on the upper surface 53 of the lens 50 as an optical functional surface, and a second convex surface 52 that protrudes downward is formed on the lower surface 54 as an optical functional surface. As shown in FIG. 5(A), the first convex surface 51 is formed in a planar shape so that the center coincides with the upper surface 53, as shown in FIG. 5(C), and the second convex surface 52 is formed in a planar shape. The center is formed in a manner consistent with the lower surface 62 of the retaining frame 60.
如圖5(B)、(C)所示，透鏡50之側面55中之下部之側面係由保持框60覆蓋，保持框60與透鏡50之側面55一體地形成。保持框60形成沿著Z方向貫通之中空之框形狀，且其平面形狀如圖5(C)所示，形成外側面61與透鏡50之外形形狀一致之正方形，如圖5(B)所示，透鏡50之側面55與保持框60之外側面61為同一平面。又，內側面63為與外側面61同心狀之圓形，且形成有開口部64。該開口部64相對於透鏡50之凸面52其平面形狀相同，且中心位置亦相同。因此，於附保持框之透鏡L20之下表面，僅透鏡50中之凸面52自保持框60之開口部64向下方突出，凸面52之周圍由保持框60之下表面62覆蓋。藉此，附保持框之透鏡L20之下部除了凸面52以外均由保持框60覆蓋，因此，組裝或檢查時易於夾緊，因此容易處理。 As shown in FIGS. 5(B) and (C), the side surface of the lower surface portion of the side surface 55 of the lens 50 is covered by the holding frame 60, and the holding frame 60 is integrally formed with the side surface 55 of the lens 50. The holding frame 60 is formed in a hollow frame shape penetrating in the Z direction, and its planar shape is as shown in FIG. 5(C), and the outer side surface 61 is formed in a square shape conforming to the outer shape of the lens 50, as shown in FIG. 5(B). The side surface 55 of the lens 50 is flush with the outer side surface 61 of the holding frame 60. Further, the inner side surface 63 has a circular shape concentric with the outer side surface 61, and an opening portion 64 is formed. The opening portion 64 has the same planar shape with respect to the convex surface 52 of the lens 50, and the center position is also the same. Therefore, on the lower surface of the lens L20 to which the frame is attached, only the convex surface 52 of the lens 50 protrudes downward from the opening portion 64 of the holding frame 60, and the periphery of the convex surface 52 is covered by the lower surface 62 of the holding frame 60. Thereby, the lower portion of the lens L20 with the holding frame is covered by the holding frame 60 except for the convex surface 52, and therefore, it is easy to clamp at the time of assembly or inspection, and thus it is easy to handle.
再者，於透鏡50之下表面54之上述區域A(圖5(c))中，亦可部分包含不被保持框60覆蓋之區域而構成。 Further, in the above-described region A (Fig. 5(c)) of the lower surface 54 of the lens 50, a region not covered by the holding frame 60 may be partially included.
已一面參照上述實施形態，一面對本發明進行說明，但本發明並不限定於上述實施形態，可於改良之目的或本發明之思想之範圍內進行改良或變更。 The present invention has been described with reference to the above embodiments, but the present invention is not limited to the embodiments described above, and modifications and changes may be made within the scope of the embodiments of the invention.
如上所述，本發明之附保持框之透鏡及附保持框之透鏡之製造方法對於能夠抑制透鏡素材於主體模具內的位置偏移，藉此能夠製造無偏差之所期望之形狀之透鏡之點有其效用。 As described above, the lens for holding the frame and the method for manufacturing the lens with the holding frame of the present invention can suppress the positional deviation of the lens material in the main body mold, thereby making it possible to manufacture the lens of the desired shape without deviation. Has its usefulness.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2017-026650 | 2017-02-16 | ||
| JP2017026650 | 2017-02-16 |
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| TW106142683A TWI656372B (en) | 2017-02-16 | 2017-12-06 | Lens with holding frame and lens with holding frame |
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| CN (1) | CN211123435U (en) |
| TW (1) | TWI656372B (en) |
| WO (1) | WO2018151170A1 (en) |
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| CN114095590A (en) * | 2020-07-31 | 2022-02-25 | 北京小米移动软件有限公司 | Lens assembly, camera module and electronic equipment |
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| CN103116196A (en) * | 2013-03-14 | 2013-05-22 | 峻立科技股份有限公司 | Array optical element manufacturing method |
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| JP2014006300A (en) * | 2012-06-21 | 2014-01-16 | Alps Electric Co Ltd | Lens with lens barrel and optical module using the same |
| JP6566760B2 (en) * | 2015-07-22 | 2019-08-28 | キヤノン株式会社 | Optical component, method of manufacturing optical component, and camera |
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| CN211123435U (en) | 2020-07-28 |
| WO2018151170A1 (en) | 2018-08-23 |
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