TWI243280B - Optical device manufacturing method - Google Patents
Optical device manufacturing method Download PDFInfo
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- TWI243280B TWI243280B TW93114173A TW93114173A TWI243280B TW I243280 B TWI243280 B TW I243280B TW 93114173 A TW93114173 A TW 93114173A TW 93114173 A TW93114173 A TW 93114173A TW I243280 B TWI243280 B TW I243280B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 12
- 239000012768 molten material Substances 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000001723 curing Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013041 optical simulation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000577395 Thenus Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- -1 copper and nickel Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Overhead Projectors And Projection Screens (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
12432801243280
(一）、【發明所屬之技術領域】 ^ ^月係關A —種光學7t件之製造方法， /、有冋大項曲面之滾輪來形成光學元件 兀件具有較佳的成形率（p . ' ess F〇rming Rate) 尤其是利用 ’使得光學 (二）、【先前技術】 月投式電視機（Rear τ 被用於電視教學、以及飛機二 練。但隨著生活水準的提高和居住實景訓 視機也愈來愈受到消費者的青睞。 々ζ月技式電 螢幕、圖像清晰為特色，I傳 ^ ^ "視機係以其大 比，背投式電視機除了具；=用=管之電視機相 外，更可直接接上電腦或是其：：音匕:尺：： = ：； 樂效果。因此，在可預見的未 $相取大的娛 II ^ ^(Enterta.n.ent D^ay/Λ, ^ ^ 的角色。 P Υ )市场中，扮演舉足輕j 为投式電視機，係由背面（r 前面（Front Side)觀看的使用者处ά」e又射影像，使在 p . 0 便用者此由背投式螢幕（Rear ]errn een)看到影像。故在設計背投式螢幕時， 必須考慮到觀看者的視胃、影像的對比、； 度等等問題。 解析度、以及冗 請參照圖1，背投式螢幕！係為—穿透型 (Transmissive Screen)，而背投式 〇 板（D〇uble Slde Lens Sheet)n與一水平雙凸透鏡板(1), [Technical field to which the invention belongs] ^ ^ Month A—A manufacturing method of optical 7t pieces, /, rollers with large large curved surfaces to form optical element elements have a better forming rate (p. 'ess F〇rming Rate) especially using' makes optics (two), [prior art] monthly projection TV (Rear τ is used for TV teaching, and aircraft second training. But with the improvement of living standards and living reality Video trainers are also becoming more and more popular with consumers. 々Ζ monthly technology-type electric screens, with clear images, I pass ^ ^ " The video camera is based on its large ratio, in addition to rear projection TVs; In addition to the TV with the tube, you can also directly connect to the computer or its :: dagger: ruler :: = :; music effect. Therefore, in the foreseeable and unforgettable entertainment II ^ ^ (Enterta .n.ent D ^ ay / Λ, ^ ^. P Υ) In the market, it plays a decisive role as a projection TV, which is viewed from the back (r Front Side). Shoot the image again so that the user can see the image from the rear projection screen (Rear) at p. 0. Therefore, when designing the rear projection screen It is necessary to consider the viewer's stomach, image contrast, resolution, etc. Please refer to Figure 1 for resolution and redundancy. Rear-projection screen! Transmissive screen, and rear-projection type. Plate Slode Lens Sheet and a horizontal lenticular lens sheet
12432801243280
(Hon zontal Lenticular Sheet)12 所構成。其中，水平雔 凸透鏡板12係具有複數橢圓雙凸透鏡（Elliptic 又(Hon zontal Lenticular Sheet) 12. Among them, the horizontal 雔 -convex lens plate 12 has a plurality of elliptic lenticular lenses (Elliptic and
Lenticular Lens Surface)121設置於入光面，以及複數專 帶條紋（Black Stripes Surface)122設置於出光面。 由光源來之入射光，係經雙面透鏡板11而被聚光，成 為平行光。此平行光再入射至橢圓雙凸透鏡丨2 1，進而被聚 光。位於出光面之黑帶條紋1 22係以遮光性材料，分別精^ 覆蓋相對於橢圓雙凸透鏡1 2 1之非聚光部。而具有黑帶條紋 1 22之^出光面，則可用以散射光線，且同時可降低外$光線 如圖1及2所示，一般而言，水平雙凸透鏡板12之橢圓 雙凸透鏡121及黑帶條紋122，係由複數個滾輪13以旋轉壓 合成型。將融熔態之塑膠原料14，倒在旋轉中之第一滾^ 1 3 1上，第一滾輪1 3 1係具有複數橢圓截面之溝槽，壓合以 形成複數個橢圓雙凸透鏡121。而塑膠原料14之另一&面"，則 疋轉中之第—滾輪！ 3 2，壓合以形成具有複數個黑帶條紋 1 22之透鏡面。A Lenticular Lens Surface) 121 is provided on the light incident surface, and a plurality of Black Stripes Surface 122 is provided on the light emitting surface. The incident light from the light source is collected by the double-sided lens plate 11 and becomes parallel light. This parallel light is incident on the elliptic lenticular lens 21, and is condensed. The black stripe 1 22 on the light-emitting surface is made of light-shielding material and covers the non-light-condensing parts of the elliptic lenticular lens 1 2 1 respectively. The light emitting surface with black stripe 1 22 can be used to scatter light and reduce external light at the same time as shown in Figures 1 and 2. Generally speaking, the elliptical lenticular lens 121 and the black strip of the horizontal lenticular lens plate 12 Stripe 122 is formed by a plurality of rollers 13 formed by rotation. The molten plastic material 14 is poured onto the rotating first roller ^ 1 3 1. The first roller 1 3 1 is a groove having a plurality of elliptical cross sections, and is pressed to form a plurality of elliptical lenticular lenses 121. And the other & noodle " of the plastic raw material 14 is the second one—the roller! 3 2. Press to form a lens surface with a plurality of black band stripes 1 22.
斤一然而，由於融熔態之塑膠原料溫度較高（約有2〇〇。〇， 第滾輪1 3 1之溫度較低（約為8 0 °c )。再加上塑膠原料盥第 :滾輪m之接觸面積較小，而與第二滾輪132之接原觸抖面積弟 較大，因此.，由第一滾輪131所形成之橢圓雙凸透鏡121， 冷縮、甚至S不規則之收㈣，使得所形成之橢 不甚接近橢圓，進而造成光學元件之良率不高，產=However, due to the high temperature of the molten plastic raw material (about 20000), the temperature of the first roller 1 31 is lower (about 80 ° c). In addition, the plastic raw material: the roller The contact area of m is smaller, and the contact area with the second roller 132 is larger. Therefore, the elliptic lenticular lens 121 formed by the first roller 131 is cold-shrinked, and even S irregularly closed. The resulting ellipse is not very close to the ellipse, and the yield of the optical element is not high.
第6頁 1243280 五、發明說明（3) 也隨之下降。 有鑑於上述問題，本案發明人爰因於此，亟思一種可 以解決習知背投式螢幕之光學元件，製造時成形率低、且 光學元件不接近橢圓之「光學元件之製造方法」。 (三） 、【發明内容】 承上所述，本發明之目的為提供一種光學元件之製造 方法，能改善習知光學元件之成形率，使得所形成之光學 元件之形狀較接近橢圓。 緣是，為達上述目的，依本發明之光學元件之製造方 法，係包括提供一熔融之原料，以一具有複數溝槽之滚輪 壓合原料，而溝槽之截面係分別為一高次項曲面，以及固 化原料。 故，依本發明之滾輪，係用以形成一光學元件，尤其 是形成背投式螢幕上之橢圓雙凸透鏡。與習知技術比較， 本發明之光學元件之製造方法，係利用一具有高次項曲面 之滾輪，來壓合成型光學元件。與習知技術相比，本發明 之滾輪中之高次項曲面係利用光學模擬分析後，回饋校正 而得，故能使壓合成型後之光學元件的成形率增加，而成 型後之光學元件形狀也更趨近預定之形狀，進而改善了光 學元件之品質，提昇了產品之良率。 (四） 、【實施方式】 為使本發明之内容更加容易理解，以下將參照相關圖Page 6 1243280 V. Description of the invention (3) has also declined. In view of the above-mentioned problems, the inventors of the present case have therefore eagerly considered an "optical element manufacturing method" that can solve the conventional rear projection type optical element with a low forming rate during manufacture and the optical element is not close to an ellipse. (3) [Summary of the Invention] As mentioned above, the object of the present invention is to provide a method for manufacturing an optical element, which can improve the forming rate of the conventional optical element, so that the shape of the formed optical element is closer to an ellipse. The reason is that, in order to achieve the above-mentioned object, the method for manufacturing an optical element according to the present invention includes providing a molten raw material and pressing the raw material with a roller having a plurality of grooves, and the cross sections of the grooves are respectively a high-order term surface , And curing raw materials. Therefore, the roller according to the present invention is used to form an optical element, especially an elliptical lenticular lens on a rear projection screen. Compared with the conventional technology, the manufacturing method of the optical element of the present invention uses a roller with a high-order term curved surface to press the composite optical element. Compared with the conventional technology, the high-order term surface in the roller of the present invention is obtained by using optical simulation analysis and feedback correction, so that the forming rate of the pressed optical element can be increased, and the shape of the optical element after molding is increased. It is also closer to the predetermined shape, thereby improving the quality of the optical element and improving the yield of the product. (IV) [Embodiment] In order to make the content of the present invention easier to understand, reference will be made to the following figures
第7頁 1243280 五、發明說明（4) 式，說明本發明光學元件之製造方法之較佳實施例。 如圖3所示，本發明之光學元件之製造方法，係包含一 原料提供程序P 1、一壓合程序P 2、以及一固化程序p 3。本 貫施例中，光學元件2 0係以用於背投式螢幕中之橢圓雙凸 透鏡片（Elliptic Lenticular Lens Sheet)為例，以說明 本發明之光學元件之製造方法之較佳實施例。當然，本發 明之光學元件之製造方法，不限於橢圓雙凸透鏡之製造: 也可利用於其他光學元件之製造，例如是其他具有柱狀透 鏡陣列之光學元件。 於原料提供程序P1中，原料係為製造光學元件之原 ί 1本實施例中’原料之材質可為塑膠。塑膠原料經過高 溫熔融後，成為流動狀之原料，以利後續壓合製程的加 工 。 、明於壓合程序Ρ2中，係利用一具有複數溝槽之滾輪壓合 塑膠原料’以形成具有複數凸部之光學元件。其中，滾輪 溝槽之截面係分別為一高次項曲面。 、==照圖4，滾輪30係具有複數溝槽31，各個溝槽31之 截面^刀別為一局次項曲面（High Order Surface)。滾輪 之材貝係可為銅、鎳等軟質金屬，使滚輪3 0具有相當的強 度，2保持滾輪30不會因為長度過長而變形。 ^清苓照圖4及圖5，本實施例中，滾輪30係以一旋轉軸 32旋轉，溝槽31之截面係為一高次項曲面，曲面上之每一 才ί 點&係對應一組（x，Z)座標。以最接近旋轉轴22之基 準點爲原點，X值為構成點與基準點B間，於平行於旋轉轴Page 7 1243280 5. Invention description (4) Formula, which describes a preferred embodiment of the manufacturing method of the optical element of the present invention. As shown in FIG. 3, the manufacturing method of the optical element of the present invention includes a raw material supply program P1, a compression program P2, and a curing program p3. In this embodiment, the optical element 20 is an elliptic lenticular lens sheet (Elliptic Lenticular Lens Sheet) used in a rear projection screen as an example to illustrate a preferred embodiment of a method for manufacturing an optical element of the present invention. Of course, the manufacturing method of the optical element of the present invention is not limited to the manufacturing of an elliptical lenticular lens: it can also be used in the manufacture of other optical elements, such as other optical elements having a cylindrical lens array. In the raw material supply program P1, the raw material is the original for manufacturing optical elements. 1 In this embodiment, the material of the raw material may be plastic. After the plastic raw material is melted at high temperature, it becomes a flowing raw material to facilitate the subsequent pressing process. As shown in the pressing procedure P2, a roller with a plurality of grooves is used to press the plastic raw material 'to form an optical element having a plurality of convex portions. Among them, the cross section of the roller groove is a high-order surface. == According to FIG. 4, the roller 30 has a plurality of grooves 31, and the cross section of each groove 31 is a high order surface. The material of the roller can be soft metals such as copper and nickel, so that the roller 30 has considerable strength, and 2 keeps the roller 30 from being deformed because of its length. ^ According to Figure 4 and Figure 5, in this embodiment, the roller 30 is rotated by a rotation axis 32, and the cross section of the groove 31 is a higher-order surface, and each point on the surface corresponds to one Group (x, Z) coordinates. With the reference point closest to the rotation axis 22 as the origin, the X value is between the constituent point and the reference point B, parallel to the rotation axis
12432801243280
方向上之一相對距離；Z值Λ描士趾p 从、☆认w七a , 值為構成點與基準點B間，於垂直 於滚輪3 0方向上之一距離；c稽太并 c値為截面之一半徑，k值為圓 錐吊數，c2、c4、c6、c8以及Ci〇係分別為 (aspheric constant)，而χ 及c1()值，符合下列公式： 非球面參數 c C/A relative distance in the direction; the Z value Λ depicts the toe p from, ☆ and w VIIa, and the value is a distance between the constituent point and the reference point B, perpendicular to the direction of the roller 30; c Is a radius of the section, k is the number of conical suspensions, c2, c4, c6, c8, and Ci0 are (aspheric constant), and the values of χ and c1 () conform to the following formula: Aspheric parameter c C /
Cp 以 x 1 '』’、：' 0 其中’決定高次項曲面公式之方法，係將習知具有橢 圓截面溝槽的滾輪所形成之光學元件，先進行亮度_視角之 光學杈擬分析，以得到紅光、綠光、藍光下之亮度分析圖 (NUs Profile)。將亮度分析圖與符合產品規格之亮度分 析圖進行比較後’以進行回饋校正，並由試誤法決定出適 合之非球面參數及圓錐參數，使切削刀具之形狀，成為高 次項曲面，以於滾輪30上形成溝槽31，而溝槽31之截面， 係也為咼次項曲面。當然，高次項曲面公式可包含更多的 咼次項，以及對應之非球面參數，而本實施例中係以p之 南次項曲面為例。Cp uses x 1 '』',: '0 where' determines the higher-order term surface formula. The optical element formed by a conventional roller with an elliptical groove is firstly analyzed by the optical_brightness_angle of view. Obtain the NUs Profile under the red light, green light and blue light. After comparing the luminance analysis chart with the luminance analysis chart that conforms to the product specifications, to perform feedback correction, and determine the appropriate aspheric and conical parameters by trial and error, so that the shape of the cutting tool becomes a higher-order surface, so that A groove 31 is formed on the roller 30, and the cross section of the groove 31 is also a second-order curved surface. Of course, the higher-order term surface formula may include more sub-order terms and corresponding aspheric parameters, and in this embodiment, the south-order term surface of p is taken as an example.
於固化程序P 3中，係固化壓合後之原料，以形成光學 元件2 0。而固化之方式係可利用紫外光照射，使得原料硬 化成型。In the curing process P 3, the raw materials after curing are laminated to form the optical element 20. The curing method can use ultraviolet light to harden the raw materials.
如圖6所示，利用具有高次頊曲面滾輪3 〇所形成之光學 元件2 0，係具有較佳之成型率，真光學元件2 〇經過壓合固 化收、纟侣後所形成之形狀’也較趨近方；本貫施例中所預定之橢圓形狀。As shown in FIG. 6, the use of the optical element 20 formed with a high-order curved surface roller 30 has a better molding rate. The true optical element 20 is formed by pressing and curing to form a shape. Closer to the side; the oval shape predetermined in this embodiment.
1243280 五、發明說明（6) . 綜上所述，本發明之光學元件之製造方法，係利用一 具有高次項曲面之滾輪，來壓合成型光學元件。與習知技 術相比，本發明之滾輪中之高次項曲面係利用光學模擬分 析後，回饋校正而得，故能使壓合成型後之光學元件的成 形率增加，而成型後之光學元件形狀也更趨近預定之形 狀，進而改善了光學元件之品質，提昇了產品之良率。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。1243280 V. Description of the invention (6). In summary, the manufacturing method of the optical element of the present invention uses a roller with a high-order curved surface to press the composite optical element. Compared with the conventional technology, the high-order term surface in the roller of the present invention is obtained by using optical simulation analysis and feedback correction, so that the forming rate of the pressed optical element can be increased, and the shape of the optical element after molding is increased. It is also closer to the predetermined shape, thereby improving the quality of the optical element and improving the yield of the product. The above description is exemplary only, and not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included in the scope of the attached patent application.
第10頁 1243280 圖式簡單說明 (五）、【圖式簡單說明】 圖1係習知背投式螢幕之一立體示意圖； 圖2 係習知用以形成橢圓雙凸透鏡之滾輪之一側視示 意圖， 圖3係本發明之光學元件製造方法之一流程圖； 圖4係本發明之光學元件製造方法中，滾輪之一示意 圖， 圖5係本發明之光學元件製造方法中，於圖4之虛線所 標示處之滾輪溝槽截面之一放大示意圖；以及 圖6係本發明之光學元件製造方法中，滾輪與所形成 之光學元件之一示意圖。 元件符號說明： I 背投式螢幕 II 雙面透鏡板 12 水平雙凸透鏡板 121 橢圓雙凸透鏡 122 黑帶條紋 13 滾輪 1 3 1 第一滾輪 132 第二滾輪 14 塑膠原料 20 光學元件 3 0 滾輪Page 10, 1243280 Brief description of the drawings (five), [Simplified description of the drawings] Figure 1 is a perspective view of one of the conventional rear-projection screens; Figure 2 is a schematic side view of one of the rollers used to form an elliptical lenticular lens 3 is a flowchart of a method for manufacturing an optical element of the present invention; FIG. 4 is a schematic diagram of a roller in the method of manufacturing an optical element of the present invention; FIG. 5 is a dotted line of FIG. 4 in the method of manufacturing an optical element of the present invention; An enlarged schematic view of the cross section of the roller groove at the marked position; and FIG. 6 is a schematic view of one of the roller and the formed optical element in the method for manufacturing an optical element of the present invention. Description of component symbols: I rear projection screen II double-sided lens plate 12 horizontal lenticular lens plate 121 elliptical lenticular lens 122 black stripe 13 roller 1 3 1 first roller 132 second roller 14 plastic material 20 optical component 3 0 roller
第11頁 1243280 圖式簡單說明 31 溝槽 ‘ 3 2 旋轉軸 P 1 原料提供程序 P 2 壓合程序 P 3 固化程序 B 基準點 c 截面半徑 c2 非球面參數 c4 非球面參數 〇6 非球面參數 c8 非球面參數 C| 〇 非球面蒼數 k 圓錐常數 X 係與基準點B間，於平行於滾輪方向上之一距離 Z 係與基準點B間，於垂直於滾輪方向上之一距離Page 11 1243280 Brief description of the diagram 31 Groove '3 2 Rotary axis P 1 Raw material supply program P 2 Pressing program P 3 Curing program B Reference point c Section radius c2 Aspherical parameters c4 Aspherical parameters 〇6 Aspherical parameters c8 Aspheric parameter C | 〇 Aspheric number k Conic constant X distance between the system and the reference point B parallel to the roller direction Z distance between the Z system and the reference point B perpendicular to the roller direction
第12頁Page 12
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW93114173A TWI243280B (en) | 2004-05-19 | 2004-05-19 | Optical device manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW93114173A TWI243280B (en) | 2004-05-19 | 2004-05-19 | Optical device manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI243280B true TWI243280B (en) | 2005-11-11 |
| TW200538860A TW200538860A (en) | 2005-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW93114173A TWI243280B (en) | 2004-05-19 | 2004-05-19 | Optical device manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI243280B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI467320B (en) * | 2009-12-21 | 2015-01-01 | Ｈｏｙａ股份有限公司 | Optical element manufacturing method, optical element |
-
2004
- 2004-05-19 TW TW93114173A patent/TWI243280B/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI467320B (en) * | 2009-12-21 | 2015-01-01 | Ｈｏｙａ股份有限公司 | Optical element manufacturing method, optical element |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200538860A (en) | 2005-12-01 |
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