TW591631B - Composite optical component and composite optical unit thereof - Google Patents

Composite optical component and composite optical unit thereof Download PDF

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Publication number
TW591631B
TW591631B TW090114097A TW90114097A TW591631B TW 591631 B TW591631 B TW 591631B TW 090114097 A TW090114097 A TW 090114097A TW 90114097 A TW90114097 A TW 90114097A TW 591631 B TW591631 B TW 591631B
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TW
Taiwan
Prior art keywords
light
composite optical
beam shaping
incident
laser light
Prior art date
Application number
TW090114097A
Other languages
Chinese (zh)
Inventor
Tatsumaro Yamashita
Kenji Furuta
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2000202389A external-priority patent/JP2002025100A/en
Priority claimed from JP2000214879A external-priority patent/JP2002032930A/en
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Application granted granted Critical
Publication of TW591631B publication Critical patent/TW591631B/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • G11B7/1275—Two or more lasers having different wavelengths
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)

Abstract

The invention discloses a composite optical component and composite optical unit. The composite optical member consisting of the molding of a transparent resin and having a incident plane for a laser beam emitted from a double wavelength laser diode, a light-reflecting surface to reflect the laser beam emitted from the double wavelength laser diode and on which a return light beam from an optical disk is made incident, and a reflecting surface to guide the return light beam from the optical disk to a light receiving member, is mounted on the complex optical unit. The incident plane is formed so as to have a concave surface in a cylindrical shape, and a light-reflecting surface is formed so as to have a convex face in a cylindrical shape having a different curvature from the incident plane, or the incident plane is inclined with respect to the incident direction of the laser beam emitted from the double wavelength laser diode. Thereby, the beam shaping function is given to the complex optical member.

Description

591631 A7 B7_ 五、發明説明（） 1 【技術領域】 ------1 II 1§., (請先閲讀背面之注意事項再填寫本頁) 本發明涉及例如在光碟裝置的拾取器本體中包括的複 合光學單元，特別是，涉及光束整形構件向包括發光構件 的外殼的安裝構造。 、，.....〆八'—"’" ’·\_z、,..... 【技術背景】 首先，根據第22圖和第23圖來說明現有的包括複合光 學構件的CD用的光學單元。第22圖是現有的光學單元5C 的局部斷面圖，第23圖是現有的光學單元50的局部分解透 視圖。 線 如第22圖所示，該光學單元50由下列部分構成：射出 CD用的雷射光（波長780nm帶）的光源46、接收由CD(未圖 示）所反射的雷射光的感光構件47、具有光源46和感光構 件47的基板部48a、安裝固定在基板部48a上以便於包容光 源4 6和感光構件4 7的側壁部4 8 b、作側壁部4 8 b的開口窗的 射出部48d、接合成覆蓋射出部48d的玻璃等的透光性的複 合光學構件49。 經濟部智慧財產局g(工消費合作社印製 光源46固定粘接在基板部48a上，以便於與複合光學 構件49相對，感光構件47接近於光源46而形成在基板部 4 8a的表面上。形成在複合光學構件49上端面上的衍射光 柵4 9 a把從光源4 6射出並由C D所反射的返回光進行衍射並 傳導到感光構件4 7的預定的位置上。而且’爲了進行由二 束法所進行的跟蹤控制，在複合光學構件49的下端面上設 置作爲衍射光柵的光束形成部49b。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -4 - 591631 A7 _B7 五、發明説明（） 2 閱 璜 背 而 之 注 意 事 項 再 填 寫 本 頁 複合光學構件49 ’如第23圖所示，相對於由基板部 4 8 a和側壁部4 8 b組成的外殼，在與光軸N正交的X方向利h 方向以及作爲圍繞光軸的旋轉方向的0方向上調整光軸。 用帶有微調機構的夾具（未圖示）來保持複合光學構件49 ’ 通過操作X方向、y方向以及Θ方向的微調機構來進行這些 複合光學構件4 9和外殼的光軸配合。當光軸配合完成之後 ，該複合光學構件49粘接到外殼的射出部48d上。 【發明欲解決之課題】 上述現有例子所涉及的光學單元50必須用包括微調機 構的夾具，對X方向、y方向以及~方向進行複合光學構件 4 9相對於外殻的光軸配合，而且，由於該調整範圍是微小 的，所以光軸的調整作業非常困難，從而存在難於高效率 製造高精度的光學單元50的問題。 而且，在複合光學構件49對外殼的光軸配合結束之後 ，需要把複合光學構件49粘接到外殼上，因此，從這點看 ，存在作業工序複雜化的問題。 而且，在現有例子所涉及的光學單元50中，由於不包 括用於把從光源46所射出的雷射光的點形狀整形爲圓形的 光束整形構件，則照射到光碟上的雷射功率的浪費較多， 而存在不能用於安裝要求更大的雷射功率的追記型或者重 寫型光碟來進行資訊的記錄和重放的光碟裝置的問題。在 此情況下，如果把三角棱鏡和柱面透鏡等光束整形構件裝 入光學單元50，就能克服所涉及的缺陷，但是，當使用包 本紙張尺度適用中國國家標準（CNS ) Α4規格（210 X 297公釐） -5 - 591631 A7 B7 五、發明説明（3) ------1 II 1·1 (請先閱讀背面之注意事項再填寫本頁) 括微調機構的夾具來與上述複合光學構件49相同地進行這 些光束整形構件向外殼的裝入時，進一步降低了光學單元 5 0的製造效率’因此’要求改善光束整形構件向外殼的安 裝構造。 爲了解決上述技術問題，本發明的目的是提供一種複 合光學單元，能夠容易並且高精度地進行光束整形構件向 外殼的安裝。 【發明之實施形態】 下面參照第1圖至第15圖說明有關本發明之復合光學 構件及具有該些的復合光學單元的第一實施例。 線- 經濟部智慧財產局a(工消費合作社印製 第1圖爲表示具有關於第一實施的復合單元的光拾取 裝置100的示圖，第2圖爲兩波長雷射二極體102的部分斷 面的斜視圖，第3圖爲第一實施例所涉及的複合光學構件 1 0 5的正視圖；第4圖爲第3圖的左側面圖，第5圖爲第3圖 的右側面圖，第6圖爲從第3圖的箭頭方向6起所看到的圖 ，第7圖爲第一實施例所涉‘及的光束整形構件109的平面圖 ，第8圖爲沿第7圖的8 - 8線的斷面圖，第9圖爲第一實施 例所涉及的外殼106的平面圖，第10圖爲第9圖的10 — 10斷 面圖，第11圖爲第9圖的左側面圖，第1 2圖爲第9圖的右側 面圖，第13圖爲從第10圖的箭頭方向13起所看到的圖’第 14圖爲沿第1圖中的14 - 14的局部斷面圖’第15圖用以複 合光學構件105的功能示意圖。 如第1圖所示，光拾取裝置1 〇〇主要由以下部分構成： 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -6- 591631 經濟部智慧財產局g(工消費合作社印製 A7 B7 五、發明説明（） 4 拾取器本體即載架5 00、配置在該載架5 00內的複合光學單 元101、平板狀的反射鏡300、准直透鏡400、物鏡200。在 複合光學單元101中包括光束整形構件109。 光拾取裝置100面對光碟例如CD61(緻密光碟）或者 DVD62(數位化視頻光碟）而配置，在作爲與 CD61(DVD62) 盤表面正交的方向的聚焦（F)方向和作爲CD 61 (DVD 62)的半 徑方向的跟蹤（T)方向上可動支撐物鏡200。而且，物鏡 200構成爲能夠適應於CD61和DVD62雙方。 複合光學單元101是這樣的感光發光一體型光學元件 :把雷射光照射到光碟上，通過接收來自光碟的反射光（ 返回光），來重放記錄在光碟上的資訊，或者，向光碟上 記錄資訊。如第1圖所示，其主要由以下部分構成：作爲 發光構件的兩波長雷射二極體102、內置了感光元件104a 的感光構件104、複合光學構件105、光束整形構件109、 印刷電路板1 07、這些構件所安裝固定的外殼1 06。 如第2圖所示，兩波長雷射二極體1 02由以下部分組成 :圓板狀的基體部102a、從基體部102a的一方的平面部 102a’突出設置的正方體形的基台102b、定位並固定在基 台102b的側壁表面上的雷射器晶片103、安裝固定在平面 部102a’上由筒狀的本體部102c和形成開口部102d’的天板 102d組成以包容基台102b的帽部102e、固定成從帽部102e 的內側堵塞開口部102d’的透明的圓板狀的玻璃板l〇2f。 在具有基體部102a、帽部102e和玻璃板102f而構成的密閉 的空間內配置雷射器晶片1 03。在該雷射器晶片1 03中’隔 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）591631 A7 B7_ V. Description of the invention () 1 [Technical field] ------ 1 II 1§., (Please read the precautions on the back before filling out this page) The present invention relates to, for example, the pickup body of an optical disc device The composite optical unit included therein relates in particular to a mounting structure of a beam shaping member to a housing including a light emitting member. ，， ..... 〆 八 '— "' " '· \ _z ,, ..... [Technical Background] First, the conventional optical components including composite optical components will be described with reference to FIGS. 22 and 23. Optical unit for CD. Fig. 22 is a partial sectional view of a conventional optical unit 5C, and Fig. 23 is a partially exploded perspective view of a conventional optical unit 50. As shown in FIG. 22, the optical unit 50 is composed of a light source 46 that emits laser light (wavelength 780 nm band) for CD, a photosensitive member 47 that receives laser light reflected by CD (not shown), A substrate portion 48a having a light source 46 and a photosensitive member 47, a side wall portion 4 8b mounted on and fixed to the substrate portion 48a to accommodate the light source 46 and the photosensitive member 47, and an emitting portion 48d serving as an opening window of the side wall portion 4 8b A light-transmitting composite optical member 49 such as glass covering the emitting portion 48d is connected. The Intellectual Property Bureau of the Ministry of Economic Affairs (industrial and consumer cooperatives) prints the light source 46 on the substrate portion 48a so as to be opposed to the composite optical member 49, and the photosensitive member 47 is formed close to the light source 46 on the surface of the substrate portion 48a. The diffraction grating 4 9 a formed on the upper end surface of the composite optical member 49 diffracts the return light emitted from the light source 46 and reflected by the CD and transmits it to a predetermined position of the photosensitive member 47. In the tracking control performed by the beam method, a beam forming portion 49b as a diffraction grating is provided on the lower end surface of the composite optical member 49. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -4-591631 A7 _B7 V. Description of the invention (2) Please read the note on the back and fill in this page again. Composite optical member 49 'As shown in FIG. 23, as compared with the housing composed of the substrate portion 4 8 a and the side wall portion 4 8 b, The optical axis N is orthogonal to the X direction and the h direction, and the optical axis is adjusted in the 0 direction, which is the rotation direction around the optical axis. The fixture (not shown) with a fine adjustment mechanism is used to hold the composite optical member 49 The optical axis alignment of these composite optical members 49 and the housing is performed by operating the fine adjustment mechanisms of the X direction, y direction, and Θ direction. After the optical axis matching is completed, the composite optical member 49 is adhered to the emitting portion 48d of the housing. [Problems to be Solved by the Invention] The optical unit 50 according to the above-mentioned conventional example must use a jig including a fine adjustment mechanism to coordinate the composite optical member 49 with respect to the optical axis of the housing in the X, y, and ~ directions, and Since the adjustment range is small, the adjustment operation of the optical axis is very difficult, and there is a problem that it is difficult to efficiently manufacture the high-precision optical unit 50. In addition, after the optical axis of the housing is matched with the composite optical member 49, it is necessary to adjust the optical axis. Since the composite optical member 49 is adhered to the housing, there is a problem that the work process becomes complicated from this point of view. Moreover, the optical unit 50 according to the conventional example does not include a device for emitting light from the light source 46. The shape of the spot shape of the laser light is a circular beam-shaping member. The laser power irradiated onto the optical disc is wasted, and It cannot be used to install an optical disc device that requires a recordable or rewritable optical disc with a larger laser power to record and reproduce information. In this case, if a beam shaping member such as a triangular prism or a cylindrical lens is used, When the optical unit 50 is installed, the defects involved can be overcome, but when using the paper size of the package, the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -5-591631 A7 B7 V. Description of the invention (3 ) ------ 1 II 1.1 · (Please read the precautions on the back before filling in this page) The fixture including the fine adjustment mechanism is used to load these beam shaping members into the housing in the same way as the above-mentioned composite optical member 49. Therefore, the manufacturing efficiency of the optical unit 50 is further reduced. Therefore, it is required to improve the mounting structure of the beam shaping member to the housing. In order to solve the above technical problem, an object of the present invention is to provide a composite optical unit that can easily and accurately mount a beam shaping member to a housing. [Embodiment of the invention] A first embodiment of a composite optical member of the present invention and a composite optical unit having the same will be described below with reference to Figs. 1 to 15. Line-Bureau of Intellectual Property, Ministry of Economic Affairs (printed by the Industrial and Consumer Cooperative) Figure 1 is a diagram showing an optical pickup device 100 having a composite unit according to the first embodiment, and Figure 2 is a portion of a two-wavelength laser diode 102 A perspective view of the cross section. FIG. 3 is a front view of the composite optical member 105 according to the first embodiment. FIG. 4 is a left side view of FIG. 3 and FIG. 5 is a right side view of FIG. FIG. 6 is a view seen from the arrow direction 6 in FIG. 3, FIG. 7 is a plan view of the beam shaping member 109 according to the first embodiment, and FIG. 8 is a view taken along 8 in FIG. 7 -A cross-sectional view taken along line 8, FIG. 9 is a plan view of the housing 106 according to the first embodiment, FIG. 10 is a cross-sectional view taken along the line 10-10 in FIG. 9, and FIG. 11 is a left-side view taken in FIG. Fig. 12 is a right side view of Fig. 9, and Fig. 13 is a view seen from the arrow direction 13 of Fig. 10 'Fig. 14 is a partial cross section taken along 14-14 in Fig. 1 Fig. 15 is a functional schematic diagram of the composite optical member 105. As shown in Fig. 1, the optical pickup device 100 is mainly composed of the following parts: This paper scale is applicable to the country of China Standard (CNS) A4 specification (210X 297 mm) -6- 591631 Intellectual Property Bureau of the Ministry of Economic Affairs (printed by the Industrial and Consumer Cooperatives A7 B7 V. Description of the invention) 4 The pickup body is the carrier 5 00, which is configured on the carrier A composite optical unit 101, a flat mirror 300, a collimating lens 400, and an objective lens 200 in a frame 500. The composite optical unit 101 includes a beam shaping member 109. The optical pickup device 100 faces an optical disc such as a CD 61 (compact disc) Or DVD62 (digital video disc), and it is supported in the focus (F) direction which is the direction orthogonal to the CD61 (DVD62) disc surface and the tracking (T) direction which is the radial direction of the CD 61 (DVD 62). Objective lens 200. The objective lens 200 is configured to be compatible with both CD61 and DVD62. The composite optical unit 101 is a light-receiving integrated optical element that irradiates laser light onto an optical disc and receives reflected light (return light) from the optical disc. To reproduce the information recorded on the optical disc, or to record the information on the optical disc. As shown in Figure 1, it is mainly composed of the following two parts: a two-wavelength laser diode 102 as a light emitting member, A photosensitive member 104, a composite optical member 105, a beam shaping member 109, a printed circuit board 107, and a housing 1 06 in which these members 104a are built. As shown in FIG. 2, a two-wavelength laser diode 102 is composed of a disc-shaped base portion 102a, a cube-shaped base 102b protruding from one of the flat portions 102a 'of the base portion 102a, and a laser positioned and fixed on the side wall surface of the base 102b. The holder wafer 103, which is mounted and fixed on the flat portion 102a ', is composed of a cylindrical body portion 102c and a top plate 102d forming an opening portion 102d' to accommodate a cap portion 102e of the abutment 102b and fixed to block the opening from the inside of the cap portion 102e. The portion 102d 'is a transparent disc-shaped glass plate 102f. The laser chip 103 is placed in a sealed space including a base portion 102a, a cap portion 102e, and a glass plate 102f. In the laser chip 103, the size of this paper is in accordance with China National Standard (CNS) A4 (210X297 mm).

線 (請先閲讀背面之注意事項再填寫本頁) -7 591631 經濟部智慧財產局員工消費合作社印製 A7 B7 1、發明説明（） 5 開微小的間隔D形成：射出DVD用的短波長（波長650nm帶） 的雷射光103a’的光源103a和射出CD用的長波長（波長780 nm帶）的雷射光103b’的光源l〇3b。而且，在本實施例中， 把間隔D設定爲120/zm。而且，DVD用的650nm帶，具體 地說，採用635nm或者650nm作爲DVD標準。 而且，從光源103a，103b分別射出的雷射光103a’、 103V通過開口部102cT射出，以便在與基體部102a的一方 的平面部102a’正交的方向上成爲相互平行。而且，雷射 光103a’、103b’的射出位置成爲雷射器晶片103的頂端表面 103’（配置成與平面部102a’相平行）的同一平面上。而且， 從與基體部1〇2&的一方的平面部102a’相對側的另一方的 平面部突出設置多個外部連接端子102g(參照第1圖），通 過該外部連接端子102g來進行給雷射器晶片103的驅動電 流的供電。 而且，在製作兩波長雷射二極體1 0 2的工序中，包括 兩個光源103a、103b的雷射器晶片103在預定的基板表面 上通過與半導體處理相類似的處理來進行加工，因此，各 個光源103a、103b間的間隔D能夠容易地高精度均勻地形 成爲預定的値。因此，作爲離散零件，能夠進行大量生爲 ，而且，兩波長雷射二極體102的成本可以是廉價的。 感光構件104，如第1圖所不，內置感光元件104a，並 且由在該感光元件104a的感光面側設置感光窗l〇4b ^的元 件104b和從元件104b突出設置到兩側的外部連接端子104r 所構成，通過外部連接端子l〇4c來進行向感光元件104a的 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） ---------^9,-----1T------ (請先閱讀背面之注意事項再填寫本頁) -8- 591631 A7 ___B7 五、發明説明（） 6 電源電壓的提供和由感光元件1 04a所光電變換的信號向外 部的輸出。 -----l·ί (請先閱讀背面之注意事項再填寫本頁) 第3圖至第6圖所示的複合光學構件105由透明度較高 的樹脂材料的成型體組成，由光軸N方向的兩端面平行地 所形成的略圓錐狀的基體部105c、從上述兩波長雷射二極 體102所射出的雷射光的入射面105a、把從上述兩波長雷 射二極體102所射出的雷射光向著光碟射出的出射面105 t 、把來自光碟的返回光傳導到上述感光元件104a上的反射 面105 d—體地形成。而且，在本實施例所涉及的複合光學 構件105中，基體部105c的兩個端面分別成爲雷射光的入 射面105a和出射面105b，來自光碟的返回光的入射面兼用 做上述出射面105 b，來自光碟的返回光射入上述出射面 105b。 線 經濟部智慧財產局員工消費合作社印製 如第3圖和第4圖所示，由上述入射面105a使從兩波長 雷射二極體1 02所射出的雷射光衍射，形成用於生成照射 在CD上的跟蹤控制用以及資料重放用的三束的三束生成 用衍射光柵l〇5h，如第6圖和第8圖所示，在出射面l〇5b的 中央部形成用於把來自光碟的返回光傳導到反射面105d上 的方形的第一衍射光柵105f。 反射面105 d成爲相對於複合光學構件105的兩端面傾 斜的傾斜面，在該反射面105 d的表面上，如第3圖和第4圖 所示，形成用於校正返回光的路徑的反射型的第二衍射光 柵105g。在由該反射面105d所反射的返回光的通過路徑上 ，平坦表面105η跨過基體部105c的周面而形成。而且，如 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -9 - 591631 A7 B7 五、發明説明（） 7 第6圖所示，從該平坦表面1 〇 5 η的邊緣部，用於進行由像 散法所進行的聚焦控制的圓柱面105 :形成爲與光軸Ν成預 定角度^的溝狀，該圓柱面1 05 i的內壁成爲返回光出射面 1 05ρ 〇 而且，在本實施例所涉及的複合光學構件105中，上 述第一衍射光柵105f、第二衍射光柵105 g以及三束用衍射 光柵l〇5h與上述入射面105a、出射面105b、基體部l〇5c、 反射面105d和圓柱面105i—起使用成型模具而一體成型。 對於這些衍射光柵105f、105g、105h的功能，在後面進行 詳細的說明。 基體部1 0 5 c形成爲：從入射面1 0 5 a到出射面1 〇 5 b側直 徑依次變小的略圓錐形，在該基體部105c的前端部形成圓 柱狀部105j，其圓柱面105j’成爲複合光學構件1〇5對外殻 106的第一限制部。 如第3圖和第4圖所示，在該基體部1 〇 5 c的後端側即入 射面105a和反射面105 d的形成部側的外周面上，具有半圓 柱狀的外表面的4個突出部105k’在周向大致均等地配置， 這些突出部105k’的頂面成爲複合光學構件1〇5對外殼10f 的第二限制部。而且，在該基體部l〇5c的後端面（包含上 述入射面105a的一部分和上述反射面l〇5d的一部分）上， 如第3圖、第5圖和第15圖所示，在與上述各個突出部 105k1目對的部分，以預定深度凹進形成用於緩衝複合光 學構件105對外殼106的壓入力的空間部l〇5s。而且，如第 3圖至第6圖所示，在基體部105c的中央部，向下突出形成 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐) " -----III1·- (請先閱讀背面之注意事項再填寫本頁) 訂 線 經濟部智慧財產局員工消費合作社印製 -10- 591631 A7 B7 五、發明説明（） 8 圓柱狀的位置限制突出部丨〇 5 m，其外周面成爲複合光學 構件105對外殼106的第三限制部。 而且，本實施例的複合光學構件1〇5，把出射面i〇5b 和返回光入射面作爲同一表面，但是，也可以分別設置出 射面和返回光入射面，在該返回光入射面上形成第一衍射 光柵。 第7圖和第8圖所示的光束整形構件1 〇 9由透明度高的 樹脂材料的成型體組成，光束整形部丨〇9a、從該光束整形 部109a向外伸出的圓盤狀的凸緣部i〇9b、從該凸緣部109b 的外周面突出的銷狀限制突出部1 〇9c、大致等間隔地突出 設置在該凸緣部109b的外周面上的3個半圓柱狀的固定用 突起109 d—體地形成。如第8圖所示，在光束整形部10 W 上，形成圓柱形透鏡，該圓柱形透鏡一面109a 形成爲平 面狀，其相對面（透鏡面）109a’形成爲圓柱狀的凹面。如第 7圖所示，該光束整形部1 0 9 a形成在凸緣部1 0 9 b的中心部 。上述固定用突起109d在凸緣部109b的厚度方向上分別平 行地形成，其頂部成爲光束整形構件109對外殻106的第一 限制部。而且，如第7圖所示，限制突出部1 09c相對於圓 柱面109a’的曲率中心軸S- S垂直形成，其周面成爲光束 整形構件109對外殻106的第二限制部。 上述光束整形構件109，如第2圖所示，把圓柱面109r ’向著兩波長雷射二極體102側安裝在外殼106內，把從兩 波長雷射二極體1 02射出的雷射光的點形狀整形爲圓形。 即，由於從兩波長雷射二極體1 02射出的雷射光的點形狀 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ------1II 1._ (請先閱讀背面之注意事項再填寫本頁) 訂 線 經濟部智慧財產局員工消費合作社印製 -11 - 591631 A7 B7 五、發明説明（） 9 (請先閱讀背面之注意事項再填寫本頁) 爲橢圓形，使其長徑方向平行地向著上述曲率中心軸S- S ，向光束整形部（圓柱形透鏡）1 〇 9 a射入雷射光，由此，能 夠擴大雷射光的短徑方向，而把雷射光的點形狀整形爲圓 形。 第9圖〜第13圖所示的外殼106由鋁模鑄製造的塊組成 ，主要由筒狀本體部106g、從該筒狀本體部106g的兩端部 分別向外方突出設置的安裝部106h，106i組成。在這些安 裝部106h，106i上分別形成方形的安裝面106h’，106Γ。 經濟部智慧財產局員工消費合作社印製 如第10圖所示，在筒狀本體部106g的左端部的內表面 上形成用於容納第2圖所示的兩波長雷射二極體1 02的容納 室106a，接著其，在左端面上凹進形成用於定位並安裝兩 波長雷射二極體102的安裝坑洞106b。而且，在筒狀本體 部106g的大致中央部的內表面上凹進形成用於定位並安裝 第7圖和第8圖所示的光束整形構件109的臺階部106m。而 且，在筒狀本體部106g的右端部的內表面上形成用於容納 第3圖至第6圖所示的複合光學構件105的容納室106c，在 其兩端側分別形成插入形成在上述複合光學構件105上的 第一限制部（圓柱面105Γ)的第一限制接受部106j和插入形 成在上述複合光學構件105上的第二限制部（突出部105k’） 的第二限制接受部1 〇6k。這些各個容納室1 06a，1 06c和臺 階部106m相對於中心軸Ν’同心地形成。 上述臺階部106m形成爲這樣的位置：當接觸到光束 整形構件109的凸緣部’109b時，把光束整形部109a設定到 兩波長雷射二極體102與複合光學構件105之間的預定位置 本紙張尺度適用中國國家榡準（CNS ) A4規格（210X297公釐） -12 - 591631 A7 B7 五、發明説明（） 10 上。而且，上述臺階部1 0 6 m的光束整形構件設定側的直 徑形成爲比外接作爲光束整形構件109對外殼106的第一限 制部的固定用突起1 09d的頂端的外接圓的直徑略小的直徑 ，通過壓入光束整形構件109能夠進行固定。 用於容納上述複合光學構件105的容納室106c形成爲 這樣的圓錐面狀：用於容納上述兩波長雷射二極體1 0 2的 容納部106k側的直徑較大，延伸至安裝面106Γ側而依次減 小直徑。而且，第一限制接受部106j的直徑被設定爲這樣 的尺寸：能夠高精度地嵌合複合光學構件105 (參照第3圖） 的圓柱狀部105j (直徑D1)，第二限制接受部106k的直徑被 設定爲這樣的直徑：稍稍小於外接設在複合光學構件1 05 的後端部105k上的各個突出部105k’的頂端的外接圓的直 徑D2(參照第4圖），通過壓入複合光學構件105能夠進行固 定。 在上述容納室1 0 6c的前端部形成用於在中心軸N ’方向 定位複合光學構件105的定位部即頂觸面106c’。在該頂觸 面106c’上開設圓形的開口部106f，以使設在複合光學構件 105上的第一衍射光柵105f從前方露出。 而且，在上述筒狀本體部106g上，如第10圖和第13圖 所示，形成在上述容納室106a，106c和臺階部106m上貫通 的U字形的位置限制溝106d和與該位置限制溝l〇6d的後端 相連接並在上述容納室106a的後端貫通的扇形的導向溝 1 0 6 d，。上述位置限制溝1 0 6 d的溝寬度被設定爲這樣的預 定的尺寸：突出設置在上述光束整形構件1 0 9上的限制突 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ------:1!·_ (請先閲讀背面之注意事項再填寫本頁) 訂 線 經濟部智慧財產局員工消費合作社印製 -13- 591631 經濟部智慧財4局員工消費合作社印製 A7 B7 五、發明説明（^ 出部1 0 9 c的外周面和突出設置在複合光學構件1 〇 5上的位 置限制突出部1 〇 5 m的外周面能夠高精度地嵌合。而且， 在接近該筒狀本體部l〇6g的上述位置限制溝l〇6d的部分形 成用於配置感光構件104的配置面106e。該配置面l〇6e， 如第1圖所示，當在上述安裝部106h，106i的安裝面106h’ ，106Γ上安裝電連接感光構件104的印刷電路板107時，在 上述各個安裝面l〇6h’，106厂之間形成所需要的臺階，以 使感光構件104不會影響外殼106。 而且，用於外殼106的塊不僅可以由鋁模鑄件構成， 也可以由鋅模鑄件、鎂合金或者其他金屬等構成。 以下，參照第1圖來對兩波長雷射二極體1 02、感光構 件104、複合光學構件105和光束整形構件109向外殻106的 安裝方法進行說明。 在把位置限制突出部105m與形成在外殻106上的導向 溝106d’的開口部對齊的狀態下，從外殼106的安裝坑洞 106b插入複合光學構件105，用未圖示的所需要的夾具， 均勻地壓緊除入射面105a的三束用衍射光柵105 h外的表面 ，由此，該基體部105c嵌入容納室106c內。接著，在出射 面105b的外緣部接觸到形成在外殼106的容納室l〇6c中的 頂觸面106d的階段中，完成中心軸W方向對外殼106的定 位。 此時，設在基體部105c上的圓柱狀部105j被嵌合在容 納室106c的第一限制接受部l〇6j上，因此，基體部l〇5c的 圓柱狀部1 0 5 j的圓柱面1 0 5 j ’（限制面，參照第3圖）接觸到 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） IT^ —Awl (請先閱讀背面之注意事項再填寫本頁) 14 591631 A7 B7 五、發明説明（& 第一限制接受部106j上，與基體部105c的前端部中的光軸 N正交的方向的位置限制被高精度地完成。而且，與此同 時，基體部105c的後端部105k被壓入設在容納室106c上的 第二限制接受部106k。此時，如第15圖所示，形成在後端 部105k的外周面上的各個突出部105k’分別成爲均勻壓緊 的狀態，各個突出部l〇5k’的頂端面（限制面）與第二限制接 受部106k相接觸，與基體部105c的後端部105k中的中心軸 Ν’正交的方向的位置限制被高精度地完成，同時，防止了 複合光學構件105從容納室106c的脫離。而且，通過把複 合光學構件105嵌入設在外殻106上的容納室106c，形成在 複合光學構件105上的位置限制突出部105m被導向到形成 在外殼1 0 6中的導向溝1 0 6 cT中，被嵌入位置限制溝1 0 6 d， 因此，繞中心軸Ν’的旋轉方向的位置限制被高精度地完成 〇 這樣，本實施例的複合光學單元1 〇 1，不僅可以把複 合光學構件105嵌入外殻106，而且可以進行複合光學構件 1 0 5對外殼1 0 6的中心軸NT方向的位置限制、與中心軸Κ正 交的方向的位置限制、繞中心軸Ν’的旋轉方向的位置限制 ，因此，能夠容易並且高精度地進行複合光學單元101的 裝配。而且，本實施例的複合光學單元101，在與複合光 學構件105中的突出部l〇5k’的形成部相對應的部分凹進形 成空間部1 0 5 s，因此，當把各個突出部1 〇 5 k5的頂端面（限 制面）接觸到第二限制接受部106k上時，各個突出部105k 的形成部在空間部105s側彈性變形，由此，其壓入力被緩 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ______I II 1·.— (請先閱讀背面之注意事項再填寫本頁)(Please read the precautions on the back before filling out this page) -7 591631 Printed by A7 B7, Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs 1. Description of the invention () 5 Open a minute interval D to form: short wavelength for DVD ( The light source 103a of the laser light 103a 'with a wavelength of 650 nm) and the light source 103b of the laser light 103b' with a long wavelength (wavelength of 780 nm) for CD. Further, in this embodiment, the interval D is set to 120 / zm. Moreover, the 650nm band for DVD, specifically, 635nm or 650nm is adopted as the DVD standard. The laser lights 103a 'and 103V emitted from the light sources 103a and 103b are emitted through the opening portion 102cT so as to be parallel to each other in a direction orthogonal to one of the flat portions 102a' of the base portion 102a. The emission positions of the laser light 103a ', 103b' are on the same plane as the top surface 103 '(arranged parallel to the flat portion 102a') of the laser chip 103. In addition, a plurality of external connection terminals 102g (refer to FIG. 1) are protruded from the other flat portion on the side opposite to the one flat portion 102a 'of the base portion 102 and the lightning connection is performed by the external connection terminal 102g. The driving current of the emitter chip 103 is supplied with power. Furthermore, in the process of manufacturing the two-wavelength laser diode 102, the laser wafer 103 including two light sources 103a and 103b is processed on a predetermined substrate surface by a process similar to a semiconductor process, so The interval D between the light sources 103a and 103b can be easily and uniformly formed into a predetermined chirp with high accuracy. Therefore, as a discrete component, a large number of generations can be performed, and the cost of the two-wavelength laser diode 102 can be inexpensive. The photosensitive member 104, as shown in FIG. 1, has a built-in photosensitive element 104a, and an element 104b provided with a photosensitive window 104b on the photosensitive surface side of the photosensitive element 104a and external connection terminals protruding from the element 104b to both sides Constituted by 104r, the paper size of the photosensitive element 104a is applied to the paper size of the photosensitive element 104a through the external connection terminal 104c. The Chinese National Standard (CNS) A4 specification (210 × 297 mm) --------- ^ 9, --- --1T ------ (Please read the precautions on the back before filling out this page) -8- 591631 A7 ___B7 V. Description of the invention (6) Supply of power voltage and signal converted by the photoelectric element 1 04a External output. ----- l · ί (Please read the precautions on the back before filling out this page) The composite optical member 105 shown in Figures 3 to 6 is composed of a molded body of a resin material with high transparency and consists of an optical axis A substantially conical base portion 105c formed in parallel with both end surfaces in the N direction, an incident surface 105a of laser light emitted from the two-wavelength laser diode 102, and a two-wavelength laser diode 102 The emitted laser light is directed toward the output surface 105 t of the optical disc, and the reflective surface 105 d that conducts the return light from the optical disc to the light receiving element 104 a is integrally formed. Moreover, in the composite optical member 105 according to the present embodiment, both end surfaces of the base portion 105c become the incident surface 105a and the exit surface 105b of the laser light, respectively, and the incident surface of the return light from the optical disc also serves as the exit surface 105b. The returning light from the optical disc enters the exit surface 105b. As shown in Figure 3 and Figure 4, printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Line Economy, laser light emitted from the two-wavelength laser diode 102 is diffracted by the incident surface 105a to form the radiation used to generate the radiation. As shown in FIGS. 6 and 8, a diffraction grating 105h for three-beam three-beam three-beam generation for tracking control and data reproduction on a CD is formed at the center of the exit surface 105b. The returning light from the optical disc is transmitted to the square first diffraction grating 105f on the reflecting surface 105d. The reflecting surface 105 d is an inclined surface that is inclined with respect to both end surfaces of the composite optical member 105. On the surface of the reflecting surface 105 d, as shown in FIGS. 3 and 4, a reflection for correcting the path of the return light is formed. 105g of the second diffraction grating. On the passage path of the return light reflected by the reflection surface 105d, a flat surface 105n is formed across the peripheral surface of the base portion 105c. Moreover, if this paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -9-591631 A7 B7 V. Description of the invention () 7 As shown in Figure 6, from the edge of the flat surface 1 0 5 η A cylindrical surface 105 for performing focus control by the astigmatism method is formed in a groove shape at a predetermined angle ^ from the optical axis N, and an inner wall of the cylindrical surface 1 05 i becomes a return light exit surface 1 05ρ 〇 In the composite optical member 105 according to this embodiment, the first diffraction grating 105f, the second diffraction grating 105g, and the three-beam diffraction grating 105h, the incident surface 105a, the exit surface 105b, and the base portion 105 are described above. 5c, the reflecting surface 105d and the cylindrical surface 105i are formed integrally using a molding die. The functions of these diffraction gratings 105f, 105g, and 105h will be described in detail later. The base portion 1 5 c is formed into a slightly conical shape in which the diameter gradually decreases from the incident surface 105 a to the exit surface 105 b. A cylindrical portion 105j is formed at the front end of the base portion 105c, and the cylindrical surface is formed. 105j 'becomes the first restricting portion of the composite optical member 105 to the case 106. As shown in Figs. 3 and 4, on the outer peripheral surface of the rear end side of the base portion 105c, which is the formation portion side of the incident surface 105a and the reflection surface 105d, 4 has a semi-cylindrical outer surface. Each of the protrusions 105k 'is arranged approximately evenly in the circumferential direction, and the top surface of these protrusions 105k' becomes a second restricting portion of the composite optical member 105 to the housing 10f. Further, the rear end surface of the base portion 105c (including a part of the incident surface 105a and a part of the reflective surface 105d) is as shown in Figs. 3, 5 and 15 as described above. A part of each of the protruding portions 105k1 is recessed at a predetermined depth to form a space portion 105s for buffering the pressing force of the composite optical member 105 on the housing 106. Moreover, as shown in Figs. 3 to 6, the central portion of the base portion 105c protrudes downward to form the paper size applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) " ----- III1 ·-(Please read the precautions on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -10- 591631 A7 B7 V. Description of the invention () 8 Cylindrical position restriction protrusion 丨 〇5 m, the outer peripheral surface of which becomes the third restricting portion of the composite optical member 105 to the case 106. In addition, in the composite optical member 105 of this embodiment, the exit surface i05b and the return light incident surface are regarded as the same surface. However, the exit surface and the return light incident surface may be separately provided, and formed on the return light incident surface. First diffraction grating. The beam shaping member 1 09 shown in FIGS. 7 and 8 is formed of a molded body of a highly transparent resin material. The beam shaping section 9a and a disk-shaped projection protruding outward from the beam shaping section 109a The edge portion 109b, the pin-shaped restricting protrusions 109c protruding from the outer peripheral surface of the flange portion 109b, and three semi-cylindrical fixings provided on the outer peripheral surface of the flange portion 109b at substantially equal intervals. It is integrally formed with the protrusion 109 d. As shown in Fig. 8, a cylindrical lens is formed on the beam shaping portion 10W. One side 109a of the cylindrical lens is formed in a flat shape, and the opposite surface (lens surface) 109a 'is formed in a cylindrical concave surface. As shown in FIG. 7, the beam shaping portion 10 9 a is formed at a center portion of the flange portion 10 9 b. The fixing protrusions 109d are formed in parallel in the thickness direction of the flange portions 109b, and the tops thereof serve as first restricting portions of the housing 106 by the beam shaping member 109. Further, as shown in Fig. 7, the restricting protruding portion 109c is formed perpendicularly to the central axis S-S of curvature of the cylindrical surface 109a ', and its peripheral surface becomes a second restricting portion of the housing 106 by the beam shaping member 109. As shown in FIG. 2, the above-mentioned beam shaping member 109 mounts the cylindrical surface 109 r ′ in the housing 106 toward the two-wavelength laser diode 102 side, and mounts the laser beam emitted from the two-wavelength laser diode 102 Dot shape is rounded. That is, due to the point shape of the laser light emitted from the two-wavelength laser diode 102, the paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) ------ 1II 1._ (please first Read the notes on the back and fill in this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -11-591631 A7 B7 V. Description of the invention () 9 (Please read the notes on the back before filling this page) The oval Shape so that the major axis direction is parallel to the above-mentioned curvature central axis S-S, and the laser beam is incident on the beam shaping part (cylindrical lens) 1 09a, so that the minor axis direction of the laser light can be enlarged, and The dot shape of the laser light is rounded. The housing 106 shown in FIGS. 9 to 13 is composed of aluminum die-casting blocks, and is mainly composed of a cylindrical body portion 106g, and mounting portions 106h protruding from both ends of the cylindrical body portion 106g outwardly. , 106i composition. Square mounting surfaces 106h ', 106Γ are formed on these mounting portions 106h, 106i, respectively. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs as shown in FIG. 10, a two-wavelength laser diode 102 is formed on the inner surface of the left end of the cylindrical body portion 106g to accommodate the two-wavelength laser diode 102 shown in FIG. The accommodating chamber 106 a is then recessed on the left end surface to form a mounting pit 106 b for positioning and mounting the two-wavelength laser diode 102. Further, a stepped portion 106m for positioning and mounting the beam shaping member 109 shown in Figs. 7 and 8 is formed in the inner surface of the substantially central portion of the cylindrical body portion 106g. Further, an accommodation chamber 106c for accommodating the composite optical member 105 shown in Figs. 3 to 6 is formed on the inner surface of the right end portion of the cylindrical body portion 106g, and the two ends of the accommodation body 106c are formed to be inserted into the composite The first restriction receiving portion 106j of the first restriction portion (the cylindrical surface 105Γ) on the optical member 105 and the second restriction receiving portion 1 inserted into the second restriction portion (the protruding portion 105k ') formed on the composite optical member 105. 6k. These respective accommodating chambers 106a, 106c and the stepped portion 106m are formed concentrically with respect to the central axis N '. The step portion 106m is formed in a position where the beam shaping portion 109a is set to a predetermined position between the two-wavelength laser diode 102 and the composite optical member 105 when the flange portion '109b of the beam shaping member 109 is contacted. The size of this paper is applicable to China National Standard (CNS) A4 (210X297 mm) -12-591631 A7 B7 V. Description of the invention (10). In addition, the diameter of the beam shaping member setting side of the stepped portion 106 m is formed to be slightly smaller than the diameter of the circumscribed circle that is the top end of the fixing protrusion 1 09d that circumscribes the first restricting portion of the housing 106 as the beam shaping member 109. The diameter can be fixed by pressing the beam shaping member 109. The accommodating chamber 106c for accommodating the composite optical member 105 is formed in a conical shape. The accommodating part 106k side for accommodating the two-wavelength laser diode 102 has a larger diameter and extends to the mounting surface 106Γ side. And in turn decrease the diameter. The diameter of the first restriction receiving portion 106j is set to a size such that the cylindrical portion 105j (diameter D1) of the composite optical member 105 (see FIG. 3) can be fitted with high accuracy, and the diameter of the second restriction receiving portion 106k The diameter is set to a diameter slightly smaller than the diameter D2 (see FIG. 4) of the circumscribed circle circumscribing the top of each protrusion 105k 'provided on the rear end 105k of the composite optical member 105 (see FIG. 4). The member 105 can be fixed. A top contact surface 106c ', which is a positioning portion for positioning the composite optical member 105 in the direction of the central axis N', is formed at the front end portion of the storage chamber 106c. A circular opening 106f is opened in the top contact surface 106c 'so that the first diffraction grating 105f provided on the composite optical member 105 is exposed from the front. Further, as shown in FIGS. 10 and 13, the cylindrical body portion 106 g is formed with a U-shaped position restriction groove 106 d penetrating the accommodation chambers 106 a, 106 c and the step portion 106 m, and the position restriction groove A fan-shaped guide groove 106 d connected to the rear end of 106d and penetrating at the rear end of the above-mentioned accommodation chamber 106a. The groove width of the above-mentioned position restriction groove 10 6 d is set to a predetermined size: the restriction protrusion protrudingly provided on the beam shaping member 1 0 9 is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm). ) ------: 1! · _ (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-13- 591631 Employee Cooperatives of the 4th Bureau of Intellectual Property of the Ministry of Economic Affairs Printed A7 B7 V. Description of the invention (^ The outer peripheral surface of the output portion 1 0 9 c and the outer peripheral surface of the position-limiting protruding portion 105 protruding from the composite optical member 105 can be fitted with high precision. An arrangement surface 106e for arranging the photosensitive member 104 is formed at a portion close to the above-mentioned position restriction groove 106d of the cylindrical body portion 106g. As shown in FIG. When the printed circuit board 107 electrically connected to the photosensitive member 104 is mounted on the mounting surfaces 106h ', 106Γ of the mounting portions 106h, 106i, necessary steps are formed between the above-mentioned respective mounting surfaces 106h', 106, so that the photosensitive member 104 does not affect the housing 106. And The block for the housing 106 may be composed of not only an aluminum die casting, but also a zinc die casting, a magnesium alloy, or other metals. Hereinafter, referring to FIG. 1, two-wavelength laser diodes 102 and a photosensitive member are used. 104. The method of mounting the composite optical member 105 and the beam shaping member 109 to the housing 106 will be described. In a state where the position-restricting protrusion 105m is aligned with the opening portion of the guide groove 106d 'formed in the housing 106, the housing 106 is aligned. The mounting cavity 106b is inserted into the composite optical member 105, and the surface except the three-beam diffraction grating 105h for the incident surface 105a is evenly pressed with a required fixture (not shown), and thus the base portion 105c is embedded and accommodated. In the chamber 106c. Next, in the stage where the outer edge portion of the exit surface 105b contacts the top contact surface 106d formed in the receiving chamber 106c of the housing 106, positioning of the housing 106 in the direction of the central axis W is completed. The cylindrical portion 105j provided on the base portion 105c is fitted to the first restriction receiving portion 106j of the accommodating chamber 106c. Therefore, the cylindrical portion 105c of the base portion 105c has a cylindrical surface 1 0 5 j '(restricted surface, see section (3 photos) The Chinese standard (CNS) A4 specification (210X297 mm) is applicable to the paper size. IT ^ —Awl (Please read the precautions on the back before filling this page) 14 591631 A7 B7 5. Description of the invention (& In the first restriction receiving portion 106j, the position limitation in the direction orthogonal to the optical axis N in the front end portion of the base portion 105c is performed with high accuracy. At the same time, the rear end portion 105k of the base portion 105c is pressed in. A second restriction receiving section 106k provided in the storage chamber 106c. At this time, as shown in FIG. 15, each of the protruding portions 105 k ′ formed on the outer peripheral surface of the rear end portion 105 k is uniformly pressed, and the top surface (restriction surface) of each protruding portion 105 k ′ and the first The two restriction receiving portions 106k are in contact with each other, and the position limitation in the direction orthogonal to the central axis N ′ in the rear end portion 105k of the base portion 105c is completed with high accuracy, and at the same time, the composite optical member 105 is prevented from detaching from the accommodation chamber 106c . Further, by inserting the composite optical member 105 into the receiving chamber 106c provided on the housing 106, the position-restricting protrusion 105m formed on the composite optical member 105 is guided into the guide groove 106 cT formed in the housing 106. The position limiting groove 10 6 d is embedded. Therefore, the position limitation of the rotation direction around the central axis N ′ is performed with high accuracy. In this way, the composite optical unit 1 〇1 of this embodiment can not only combine the composite optical member 105 It is embedded in the housing 106, and the position limitation of the composite optical member 105 on the center axis NT direction of the housing 106, the position limitation in the direction orthogonal to the center axis K, and the position about the rotation direction of the center axis N 'can be performed. Due to the limitation, the assembly of the composite optical unit 101 can be easily and accurately performed. Moreover, in the composite optical unit 101 of this embodiment, a portion corresponding to the forming portion of the protruding portion 105k ′ in the composite optical member 105 is recessed into the forming space portion 10 5 s. Therefore, when each protruding portion 1 is 〇5 When the top end surface (restriction surface) of k5 contacts the second restriction receiving portion 106k, the forming portion of each protruding portion 105k is elastically deformed on the side of the space portion 105s, thereby reducing the pressing force. Standard (CNS) A4 specification (210X297 mm) ______I II 1 · .— (Please read the precautions on the back before filling this page)

、1T 經濟部智慧財產局員工消費合作社印製 -15- 591631 經濟部智慧財產局工消費合作社印製 Α7 Β7 i、發明説明（） 13 和，能夠防止超過必要的壓入力作用到複合光學構件1 〇 5 上，能夠防止光學功能部的變形，特別是第二衍射光柵 105g和三束用衍射光柵105h的變形。 在把從凸緣部1 09b的外周面突出的銷狀限制突出部 1 0 9 c與形成在外殼1 0 6上的導向溝1 0 6 cT的開口部相對齊的 狀態下，從外殼106的安裝坑洞106b插入光束整形構件1〇9 ，用未圖示的所需要的夾具，均勻地壓緊凸緣部l〇9b的一 面，由此，被嵌入到形成在外殼1 0 6的大致中央部內表面 上的臺階部106m中。接著，在與凸緣部109b的壓緊側的相 對面接觸到臺階部106m的階段中，對外殼106的中心軸K 方向的定位被完成。 而且，與此同時，形成在凸緣部1 0 9 b的外周面上的三 個半圓柱狀的固定用突起109d的頂部（第一限制部）被壓入 外殻1 0 6的內表面，因此，與中心軸N ’正交的方向的位置 限制被高精度地完成，同時，防止光束整形構件109從臺 階部106m脫落。而且，隨著光束整形構件109對外殼106的 插入動作，從凸緣部109b的外周面所突出的限制突出部K 9c(第二限制部）被引導到形成在外殼106上的導向溝l〇6d 中，而被嵌入位置限制溝106d，因此，繞中心軸W的旋轉 方向的位置限制以高精度地完成。 這樣，本實施例的複合光學單元1 〇 1，不僅可以把光 束整形構件109嵌入外殻106，而且可以進行光束整形構件 109對外殻106的中心軸Ν’方向的位置限制、與中心軸ΓΤ正 交的方向的位置限制、繞中心軸Ν’的旋轉方向的位置限制 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐） ---------批·-----、玎------ (請先閱讀背面之注意事項再填寫本頁) -16- 591631 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（） 14 ，因此，能夠容易並且高精度地進行複合光學單元101的 裝配。 兩波長雷射二極體102，把其帽部102e(參照第2圖）插 入外殼106的容納室106a內，把基體部102a嵌入形成在外 殻106上安裝坑洞106b中，由此，固定到外殼106上。由此 ，如第1 5圖所示，能夠使從兩波長雷射二極體1 0 2所射出 的雷射光的光軸N自動地與外殼106的中心軸Ν’相對齊，能 夠使從兩波長雷射二極體1 02所射出的雷射光射入到光束 整形部1 09a的中心上，因此，能夠把雷射光的點形狀整形 爲圓形。 感光構件1 04，如第1圖和第1 5圖所示，通過印刷電路 板107安裝在外殼106上。該感光構件104對印刷電路板107 的安裝這樣進行：把元件104b的感光窗104b’側穿過設在 印刷電路板107上的通孔107a，把外部連接端子104c夾持 到形成在印刷電路板107表面上的夾持部（未圖示）上。而 且，可以根據需要，用粘接劑把元件104b堅固粘接到印刷 電路板107或者外殼106上。而且，固定感光構件104的印 刷電路板107，在配置成感光窗104b’與形成在外殻106上 的位置限制溝106d相對的狀態下，被承載在安裝部106h， 106i的各個安裝面l〇6h’，106Γ上，用螺栓108進行螺旋固 定，而固定到外殼106上。而且，搭載感光構件104的印刷 電路板107，當通過預定的基準光學系統從光源i〇3a， 103b所射出的雷射光l〇3a’，103 V所對應的來自光碟的返 回光預先由第一衍射光柵105f和第二衍射光柵105 g進行衍 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） --------------1T------ (請先閱讀背面之注意事項再填寫本頁) -17- 3 6 1Χ 9 經濟部智慈財產局員工消費合作社印製 Η： 一 A7 _____B7 _發明説明（匕 射時，調整爲最適當地引導到感光元件104a的預定位置 上，然後，固定在安裝面106h，106Γ上。 下面對光拾取裝置100所進行的DVD 62和CD61的重放 動作進行說明。 在上述構成中，當重放DVD62時，如第1圖所示，從 兩波長雷射二極體102的光源103a射出的雷射光l〇3a’透過 形成在複合光學構件105的入射面105a上的三束用衍射光 柵105h而變換爲三束，然後，透過第一衍射光柵105f，從 出射面1 0 5 b射出。 接著，該雷射光l〇3a’通過配置成與雷射光103a1勺行 進方向成45度的反射鏡300而使其角度偏向90度，並射入 配置在反射鏡300的上方的平行光管透鏡400中。接著，通 過該平行光管透鏡400而成爲大致平行光的雷射光l〇3a’射 入物鏡200。通過物鏡200的聚光作用，成像在DVD 62的資 訊記錄面上。 然後，由DVD62所反射的雷射光（返回光）l〇3a’再次透 過物鏡200，並透過平行光管透鏡400，由反射鏡300所反 射，然後，射入形成在第1圖所示的返回光入射面即形成 在出射面105b上的第一衍射光柵105f，成爲衍射成預定的 衍射角度的一次衍射光的返回光103a’ - 2。返回光103a’ -2接著被形成在複合光學構件105上的返回光反射面105 d所 反射，而入射到圓柱面105i中，從返回光出射面1〇5ρ射出 。而且，射出的返回光103a’一 2通過位置限制溝106d(參照 第8圖，第1 1圖），而入射到感光構件1 0 4的感光元件1 0 4 ί ------1 I — 1#.— (請先閱讀背面之注意事項再填寫本頁) 訂 -線 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -18- 591631 經濟部智慈財產局員工消費合作社印製 A7 B7 五、發明説明（j 16 中的感光位置P上。 此時，由感光元件104a所接受的返回光103a’- 2被進 行光電變換，由此，通過把與DVD 62的資訊記錄面的信號 相對應的電流輸出變換爲電壓信號而生成重放信號，從感 光構件104的外部連接端子l〇4b被輸出，通過印刷電路板 107而傳導到外部。而且，由感光元件104a所接受的返回 光103- 2的一部分被用於聚焦和跟蹤控制。 另一方面，當重放CD 61時，從兩波長雷射二極體102 的光源103b射出的雷射光l〇3b’，如第1圖所示，透過形成 在複合光學構件1 05的入射面1 05a上的三束用衍射光柵 105h而變換爲三束，然後，透過第一衍射光柵105f，從出 射面105b射出。接著，該雷射光103b’與DVD62時相同被傳 導到物鏡2 00，通過物鏡200的聚光作用，成像在CD61的 資訊記錄面上。 然後，由CD61所反射的返回光103V再次透過物鏡200 、平行光管透鏡400，並由反射鏡300所反射，然後，射入 第一衍射光柵1 05f，成爲衍射成預定的衍射角度的一次衍 射光的返回光103b’— 2。返回光103M— 2接著被形成在複 合光學構件105上的返回光反射面105d 所反射，射入圓 柱面105i。在圓柱面105i中，返回光103b’— 2提供用於聚 焦控制的像散法，射出返回光出射面105p，而通過位置限 制溝106 d(參照第10圖，第13圖），而由感光元件104a中的 感光位置P所接受。此時，由感光元件1 0 4 a所接受的返回 光103V - 2被進行光電變換，由此，通過把與CD61的資訊 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）1T Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-15- 591631 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 Β7 i, Invention Description () 13 and, can prevent more than the necessary pressing force from acting on the composite optical component 1 〇5, it is possible to prevent the deformation of the optical function portion, particularly the deformation of the second diffraction grating 105g and the three-beam diffraction grating 105h. In a state where the pin-shaped restricting protrusions 1 0 9 c protruding from the outer peripheral surface of the flange portion 10 b are aligned with the openings of the guide grooves 10 6 cT formed in the housing 106, the The mounting cavity 106b is inserted into the beam shaping member 1009, and one side of the flange portion 10b is evenly pressed with a required fixture (not shown), thereby being embedded in the approximate center of the housing 106. In the stepped portion 106m on the inner surface of the portion. Next, in a stage where the opposite surface of the flange portion 109b on the pressing side comes into contact with the step portion 106m, the positioning of the housing 106 in the direction of the central axis K is completed. At the same time, the tops (first restricting portions) of the three semi-cylindrical fixing protrusions 109d formed on the outer peripheral surface of the flange portion 10b are pressed into the inner surface of the housing 106, Therefore, the position limitation in the direction orthogonal to the central axis N ′ is performed with high accuracy, and at the same time, the beam shaping member 109 is prevented from falling off from the step portion 106m. Further, as the beam shaping member 109 is inserted into the housing 106, the restricting protrusion K 9c (second restricting portion) protruding from the outer peripheral surface of the flange portion 109b is guided to the guide groove 10 formed in the housing 106. In 6d, since the position restriction groove 106d is embedded, the position restriction in the rotation direction around the central axis W is performed with high accuracy. In this way, the composite optical unit 101 of this embodiment can not only embed the beam shaping member 109 into the casing 106, but also perform positional restriction of the beam shaping member 109 on the center axis N ′ direction of the casing 106, and be positive with the center axis ΓΤ. Position limit in the direction of intersection, position limit in the direction of rotation around the central axis N 'This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) --------- Batch · ---- -、 玎 ------ (Please read the notes on the back before filling out this page) -16- 591631 Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of Invention () 14 Therefore, it can be easily The assembly of the composite optical unit 101 is performed with high accuracy. The two-wavelength laser diode 102 has its cap portion 102e (refer to FIG. 2) inserted into the accommodating chamber 106a of the casing 106, and the base portion 102a is embedded in the mounting cavity 106b formed on the casing 106, thereby being fixed to壳 106 上。 On the housing 106. As a result, as shown in FIG. 15, the optical axis N of the laser light emitted from the two-wavelength laser diode 102 can be automatically aligned with the central axis N ′ of the housing 106, so that the optical axis N The laser light emitted from the wavelength laser diode 102 is incident on the center of the beam shaping section 109a. Therefore, the point shape of the laser light can be shaped into a circle. The photosensitive member 104 is mounted on the casing 106 through a printed circuit board 107 as shown in Figs. 1 and 15. The mounting of the photosensitive member 104 on the printed circuit board 107 is performed by passing the photosensitive window 104b 'side of the element 104b through the through hole 107a provided in the printed circuit board 107, and clamping the external connection terminal 104c to the printed circuit board. 107 on a clamping portion (not shown) on the surface. Furthermore, the component 104b may be firmly adhered to the printed circuit board 107 or the case 106 with an adhesive, as necessary. The printed circuit board 107 fixing the photosensitive member 104 is carried on each of the mounting surfaces 106h and 106i of the mounting portions 106h and 106i in a state where the photosensitive window 104b 'is opposed to the position-limiting groove 106d formed in the housing 106. ', 106Γ, screwed with bolts 108 and fixed to the casing 106. In addition, the printed circuit board 107 on which the photosensitive member 104 is mounted, when the laser light 103a ′, 103 V corresponding to the laser light emitted from the light sources i03a, 103b passes through a predetermined reference optical system, The diffraction grating 105f and the second diffraction grating 105g are diffracted. The paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) -------------- 1T ----- -(Please read the notes on the back before filling out this page) -17- 3 6 1 × 9 Printed by the Consumer Cooperatives of the Intellectual Property Office of the Ministry of Economic Affairs 一 ： 一 A7 _____B7 _Invention description (adjust for the most appropriate guidance when shooting At the predetermined position of the photosensitive element 104a, it is fixed on the mounting surfaces 106h, 106Γ. The DVD 62 and CD61 playback operation performed by the optical pickup device 100 will be described below. In the above configuration, when the DVD 62 is played back At this time, as shown in FIG. 1, the laser light 103 a ′ emitted from the light source 103 a of the two-wavelength laser diode 102 is transmitted through three beam diffraction gratings 105 h formed on the incident surface 105 a of the composite optical member 105. Is three beams, and then passes through the first diffraction grating 105f, The exit surface 1 0 5 b is emitted. Then, the laser light 103a ′ is deflected to 90 degrees by a reflector 300 configured to be 45 degrees from the traveling direction of the laser light 103a1, and is incident on the reflector 300 The collimator tube lens 400 above. Then, the laser light 103a ', which becomes substantially parallel light through the collimator lens 400, enters the objective lens 200. The information collected by the objective lens 200 is used to form information on the DVD 62 The recording surface. Then, the laser light (return light) 103a 'reflected by the DVD62 passes through the objective lens 200 again, passes through the collimator tube lens 400, is reflected by the reflecting mirror 300, and then enters and is formed in FIG. The returning light incident surface shown, that is, the first diffraction grating 105f formed on the exiting surface 105b, becomes the returning light 103a'-2 which is a first-order diffracted light diffracted to a predetermined diffraction angle. The returning light 103a'-2 is then formed on The returning light reflecting surface 105 d on the composite optical member 105 is reflected by the returning light reflecting surface 105 d and is incident on the cylindrical surface 105 i and exits from the returning light exit surface 105 p. Further, the returned returning light 103 a ′ -2 passes through the position restriction groove 106 d (see Figure 8 (Figure 1 1), and the photosensitive element 1 0 4 incident on the photosensitive member 1 0 4 ί ------ 1 I — 1 # .— (Please read the precautions on the back before filling this page) Order-line This paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) -18- 591631 Printed by A7 B7, Consumer Cooperative of Intellectual Property Bureau, Ministry of Economic Affairs V. Description of the invention (on photosensitive position P in j 16). At this time, the return light 103a'-2 received by the photosensitive element 104a is subjected to photoelectric conversion, thereby generating a playback signal by converting a current output corresponding to a signal on the information recording surface of the DVD 62 into a voltage signal, The light is output from the external connection terminal 104b of the photosensitive member 104, and is conducted to the outside through the printed circuit board 107. Further, a part of the return light 103-2 received by the photosensitive element 104a is used for focus and tracking control. On the other hand, when the CD 61 is reproduced, the laser light 103b ′ emitted from the light source 103b of the two-wavelength laser diode 102 passes through the incident surface of the composite optical member 105 as shown in FIG. 1. The three beams on 105a are converted into three beams by the diffraction grating 105h, and then transmitted through the first diffraction grating 105f and emitted from the exit surface 105b. Next, the laser light 103b 'is guided to the objective lens 200 as in the case of the DVD62, and is focused on the information recording surface of the CD61 by the light condensing effect of the objective lens 200. Then, the return light 103V reflected by the CD61 passes through the objective lens 200 and the collimator lens 400 again, and is reflected by the reflecting mirror 300, and then enters the first diffraction grating 105f to become a primary diffraction diffracted to a predetermined diffraction angle. The return light 103b'-2 of the light. The return light 103M-2 is reflected by the return light reflecting surface 105d formed on the composite optical member 105, and enters the cylindrical surface 105i. In the cylindrical surface 105i, the return light 103b'-2 provides an astigmatism method for focus control. The return light exit surface 105p is emitted through the position-limiting groove 106d (see Figs. 10 and 13). The light receiving position P in the element 104a is accepted. At this time, the returned light 103V-2 received by the light receiving element 10 4 a is photoelectrically converted. Therefore, the information of the CD61 is adapted to the Chinese National Standard (CNS) A4 standard (210X297 mm).

線41- (請先閱讀背面之注意事項再填寫本頁) -19 591631 A7 B7 五、發明説明（^ 記錄面的信號相對應的電流輸出變換爲電壓信號，而形成 重放信號，從感光構件104的外部連接端子104b被輸出， 通過印刷電路板107，傳導到外部。而且，由感光元件 l〇4a所接受的返回光103b’ — 2的一部分被用於像散法所進 行的聚焦控制和三束所進行的跟蹤控制。 而且，在光拾取裝置100中，可以在出射面l〇5b與物 鏡200之間的光路中設置限制從出射面105b射出的雷射光 103a^ 103b’的光束的直徑的波長濾光鏡等。 下面對複合光學構件105中包括各個衍射光柵105f、 105g、105h的功能進行說明。 如第15圖所示，與從複合光學構件105的出射面105 t 射出的雷射光l〇3a^ 103b’相對應的分別來自DVD62和 C D 6 1的返回光分別由形成在出射面1 0 5 b上的第一衍射光 柵105f所衍射，而成爲返回光103a>—2和返回光103V-2。此時，由於對應於CD61的返回光103V — 2的波長長於 對應於DVD62的返回光103a’— 2的波長，因此，返回光 103V — 2的衍射角度，大於返回光103a> — 2的衍射角度（利 用這樣的原理：在衍射光柵中，波長越長，衍射角度越大 )° 而且，利用該衍射角度的差，使在被衍射之前雷射光 103 a’、103 V各自的光軸間距離爲D的狀態，當返回光 103a’— 2、返回光103b’— 2到達返回光反射面105d 時， 兩者的到達位置相一致。 但是，在複合光學構件1 0 5的返回光反射面1 0 5 d中， 本纸張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐） ______I__i·— (請先閱讀背面之注意事項再填寫本頁)Line 41- (Please read the precautions on the back before filling this page) -19 591631 A7 B7 V. Description of the invention (^ The current output corresponding to the signal on the recording surface is converted into a voltage signal to form a playback signal from the photosensitive member The external connection terminal 104b of 104 is output and is conducted to the outside through the printed circuit board 107. Furthermore, part of the return light 103b'-2 received by the photosensitive element 104a is used for the focus control and astigmatism method. The tracking control is performed by three beams. In addition, in the optical pickup device 100, a diameter of a beam of the laser light 103a ^ 103b 'that restricts the laser light 103a ^ 103b' emitted from the emission surface 105b may be set in the optical path between the emission surface 105b and the objective lens 200. The following describes the function of the composite optical member 105 including each of the diffraction gratings 105f, 105g, and 105h. As shown in FIG. 15, the light emitted from the light emitting surface 105t of the composite optical member 105 The returning light 103b and 103b 'corresponding to the returning light from DVD62 and CD 61 respectively are diffracted by the first diffraction grating 105f formed on the exit surface 1 0 5b, and become returning light 103a> -2 and The return light 103V-2. At this time, since the wavelength of the return light 103V-2 corresponding to CD61 is longer than the wavelength of the return light 103a'-2 corresponding to DVD62, the diffraction angle of the return light 103V-2 is greater than the return light 103a > — 2 diffraction angle (using such a principle: in a diffraction grating, the longer the wavelength, the larger the diffraction angle) ° and the difference in the diffraction angle is used to make the laser light 103 a ′ and 103 V each before being diffracted. In the state where the distance between the optical axes is D, when the returning light 103a'—2, the returning light 103b'—2 reaches the returning light reflecting surface 105d, the arrival positions of the two are consistent. However, in the composite optical member 1 0 5 Back to the light reflecting surface 1 0 5 d, the paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) ______ I__i · — (Please read the precautions on the back before filling this page)

、1T 線 經濟部智慧財產局Μ工消費合作社印製 -20- 591631 A7 B7 五、發明説明（） 18 把返回光103a’— 2、返回光l〇3b’— 2簡單地反射，由於雙 方的雷射光的入射角不同，就不能使兩個返回光1 〇 3 a ’ - 2 、返回光103b’ — 2相一致地向著感光元件i〇4a的感光位置 P。爲了校正此點，在返回光反射面l〇5d 上設置第二衍 射光柵105g。即，利用入射到第二衍射光柵i〇5g中的返回 光103a5-2和返回光l〇3b’— 2再次由波長不同所爲生的衍 射角度的差，來使由返回光反射面l〇5d 反射的返回光 103a’一 2和返回光l〇3b’— 2雙方的光軸相一致。 這樣，能夠把由第一衍射光柵1 05f分別所衍射的返回 光103a’一 2和返回光l〇3b’ — 2校正爲都由感光元件104a的 感光位置P所接受，即使使用2波長的光源103a、103b，也 能用具有一個感光元件丨〇4a的感光構件來接受雙方的雷射 光。 如上述那樣，本實施例所涉及的複合光學單元1 0 1， 如第1圖所示，具有安裝在光拾取裝置100上的外殼106， 在外殻106中安裝固定兩波長雷射二極體102和感光構件 104以及複合光學構件105，兩波長雷射二極體102具有發 射DVD用的短波長雷射的雷射二極體103a和發射CD用的長 波長雷射二極體103b，複合光學構件105設置了 ：從兩波 長雷射二極體102射出的光入射的入射面105a和射出的出 射面105b、對由設在出射面l〇5b上的光碟D1(D2)所反射的 返回光進行衍射的第一衍射光柵1 05f、把由第一衍射光柵 105f所衍射的返回光反射到感光構件104上的反射面10L ，同時在反射面105 d上還設置了使波長不同的光的光軸相 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁)Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Ministry of Economic Affairs, M Industrial Consumer Cooperative, -20-591631 A7 B7 V. Description of the invention (18) The return light 103a'-2, and the return light 103b'-2 are simply reflected. The different incident angles of the laser light make it impossible to make the two returning lights 1 〇 3 a ′-2 and the returning light 103 b ′-2 coincide with the light receiving position P of the light receiving element i 04a. To correct this, a second diffraction grating 105g is provided on the return light reflecting surface 105d. That is, the difference between the diffraction angles of the returning light 103a5-2 and the returning light 103b'-2 incident on the second diffraction grating 105b is caused by the difference in wavelength again to make the returning light reflecting surface l0. The optical axes of the 5d reflected return light 103a'-2 and the return light 103b'-2 are the same. In this way, the return light 103a'-2 and the return light 103b'-2 diffracted by the first diffraction grating 105f can be corrected to be accepted by the photosensitive position P of the photosensitive element 104a, even if a light source of 2 wavelengths is used 103a and 103b can also receive laser light from both sides by using a photosensitive member having one photosensitive element 04a. As described above, as shown in FIG. 1, the composite optical unit 1 0 1 according to this embodiment has a housing 106 mounted on the optical pickup device 100, and a two-wavelength laser diode 102 is fixed in the housing 106. With the photosensitive member 104 and the composite optical member 105, the two-wavelength laser diode 102 has a short-wavelength laser diode 103a for emitting DVDs and a long-wavelength laser diode 103b for emitting CDs. The member 105 is provided with an incident surface 105a and an exit surface 105b where light emitted from the two-wavelength laser diode 102 is incident, and return light reflected by the optical disc D1 (D2) provided on the exit surface 105b. The first diffractive grating 105f that performs diffraction, reflects the return light diffracted by the first diffractive grating 105f to the reflecting surface 10L on the photosensitive member 104, and at the same time, the reflecting surface 105d is provided with light having different wavelengths. The size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page)

、1T 經濟部智慈財產局員工消費合作社印製 -21 - 591631 A7 B7 五、發明説明（） 19 一致而成像到感光構件1 04的感光位置P上的第二衍射光柵 105g，因此，能夠用一個複合光學單元101來適合於使用 兩個不同波長的光拾取裝置100。而且，感光構件丨〇4可以 爲一個，能夠僅調整該感光構件104來進行位置配合’因 此，不會使調整工序中的成本增加。而且，使從兩波長雷 射二極體1 0 2所射出的雷射光的出射面1 〇 5 b與入射來自光 碟的返回光的返回光入射面處於相同平面上’因此’從這 點來看，能夠簡化構成。 而且，兩波長雷射二極體102由基體部102a、由帽部 102e和玻璃板102f構成的元件、從基體部l〇2a突出設置的 外部連接端子102g所構成，感光構件104是由內置了感光 元件1 04a的元件1 04b和設在該元件1 04b上的外部連接端子 1 04c所構成的所謂分立構件，使用分別以單體廉價製造的 構件來構成複合光學單元1 〇 1，因此，各構件的處理變得 容易，並且，向外殻106的裝配作業變得容易，能夠降低 構件成本和加工費。 而且，用廉價的樹脂材料來形成複合光學構件105’ 同時，在複合光學構件105成型時，同時一體形成第一和 第二衍射光柵105f，105g、三束用衍射光柵105h、圓柱面 1 05 i，因此，成型時間可以縮短，能夠進一步降低複合光 學構件105的製造成本。 而且，在外殻1 06內包括光束整形構件1 09，因此’能 夠減少照射到光碟上的雷射功率的浪費，而能夠適合於例 如DVD裝置等需要較大的雷射功率的光碟裝置的光拾取器 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ------：I — — II (請先閱讀背面之注意事項再填寫本頁) 訂 線 經濟部智慧財產局g(工消費合作社印製 -22- 591631 A7 ____B7 五、發明説明（& 〇 而且，在光束整形構件109中，形成：光束整形部 l〇9a、從該光束整形部l〇9a向外伸出的圓盤狀的凸緣部 l〇9b、形成在該凸緣部l〇9b上的限制突出部109c，在外殻 106的內表面上，形成頂觸上述凸緣部l〇9b的端面的臺階 部106m和插入上述限制突出部109c的位置限制溝106d，使 用上述臺階部106m和上述凸緣部109b的端面來構成第一限 制裝置，同時，使用上述位置限制溝1 06d和上述限制突出 部109c來構成第二限制裝置，因此，僅通過把光束整形構 件109壓入到外殼106內，就能自動完成光束整形構件109 對雷射光軸的姿勢調整，當向外殼106中裝配光束整形構 件1 09時，不需要特別的位置調整用的夾具，因此，能夠 簡化包括光束整形構件109的複合光學單元101的裝配，同 時，不會使作用在外殼106與光束整形構件109之間的裝配 力作用到光束整形部109a上，而能夠防止光束整形部109a 的變形和變位，因此，能夠提高包括光束整形構件1 09的 複合光學單元1 01的光學特性。 而且，本實施例所涉及的複合光學單元，使用在光束 整形部109a中形成的圓柱形透鏡作爲光束整形構件109， 同軸配置該圓柱形透鏡的中心軸和從兩波長雷射二極體 1 02所射出的雷射光的光軸，相對於圓柱形透鏡的透鏡面 ，垂直入射雷射光，以使進行了光束整形的雷射光從圓柱 形透鏡的中心軸方向射出，因此，就能不必增加外殼1 0 ( 的徑向尺寸，而在外殼1 〇 6內設置光束整形構件1 〇 9 ’能夠 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局g(工消費合作社印製 -23- 591631 A7 B7Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs of the Ministry of Economic Affairs of the People's Republic of China. -21-591631 A7 B7 V. Description of the invention (19) The second diffraction grating 105g imaged on the photosensitive position P of the photosensitive member 104 is consistent. One composite optical unit 101 is suitable for using two optical pickup devices 100 with different wavelengths. In addition, there may be only one photosensitive member, and only the photosensitive member 104 can be adjusted for position matching. Therefore, the cost in the adjustment process is not increased. Moreover, the exit surface 1 05 b of the laser light emitted from the two-wavelength laser diode 102 is on the same plane as the return light incident surface where the return light from the optical disc is incident. Can simplify the structure. The two-wavelength laser diode 102 is composed of a base portion 102a, an element composed of a cap portion 102e and a glass plate 102f, and an external connection terminal 102g protruding from the base portion 102a. The photosensitive member 104 is built in The so-called discrete member consisting of the element 104b of the light receiving element 104a and the external connection terminal 104c provided on the element 104b uses a component manufactured separately and inexpensively to constitute the composite optical unit 101. Therefore, each Handling of components becomes easy, and assembling work to the housing 106 becomes easy, which can reduce component costs and processing costs. In addition, the composite optical member 105 'is formed of an inexpensive resin material. At the same time, when the composite optical member 105 is molded, the first and second diffraction gratings 105f, 105g, the three-beam diffraction grating 105h, and the cylindrical surface 1 05 i are simultaneously integrated. Therefore, the molding time can be shortened, and the manufacturing cost of the composite optical member 105 can be further reduced. Moreover, since the beam shaping member 10 is included in the housing 106, it is possible to reduce the waste of laser power irradiated onto the optical disc, and it is suitable for optical pickup of optical disc devices that require a large laser power, such as a DVD device. The paper size of this device applies the Chinese National Standard (CNS) A4 specification (210X297 mm) ------: I--II (Please read the notes on the back before filling this page) (Printed by Industrial and Consumer Cooperatives-22- 591631 A7 ____B7 V. Explanation of the invention (& 〇 Also, in the beam shaping member 109, a beam shaping section 109a is formed, and the beam shaping section 109a projects outward. A disc-shaped flange portion 109b and a restricting protrusion 109c formed on the flange portion 109b are formed on the inner surface of the housing 106 so as to contact the end surface of the flange portion 109b. The portion 106m and the position restriction groove 106d inserted into the restriction protrusion 109c use the end faces of the stepped portion 106m and the flange portion 109b to constitute a first restriction device, and the position restriction groove 106d and the restriction protrusion 109c are used. To form the first Restriction device, therefore, only by pressing the beam shaping member 109 into the housing 106, the posture adjustment of the laser beam axis by the beam shaping member 109 can be automatically performed. When the beam shaping member 109 is assembled into the housing 106, it is not necessary A special jig for position adjustment can simplify assembly of the composite optical unit 101 including the beam shaping member 109, and at the same time, does not apply an assembly force acting between the housing 106 and the beam shaping member 109 to the beam shaping section 109a In this way, deformation and displacement of the beam shaping unit 109a can be prevented, so that the optical characteristics of the composite optical unit 101 including the beam shaping member 109 can be improved. Furthermore, the composite optical unit according to this embodiment is used for a beam The cylindrical lens formed in the shaping section 109a is used as the beam shaping member 109. The central axis of the cylindrical lens and the optical axis of the laser light emitted from the two-wavelength laser diode 102 are coaxially arranged. Lens surface, perpendicularly incident laser light, so that the laser beam that has undergone beam shaping is emitted from the center axis of the cylindrical lens Therefore, it is not necessary to increase the radial size of the casing 10 (and the beam shaping member 10 is provided in the casing 10), and the Chinese national standard (CNS) A4 specification (210X297 mm) can be applied to this paper size (210X297 mm) ( Please read the notes on the back before filling this page) Order the Intellectual Property Bureau of the Ministry of Economic Affairs (printed by the Industrial and Consumer Cooperatives-23- 591631 A7 B7

五、發明説明（A 緊湊地構成包括光束整形構件1 09的複合光學單元。 下面，根據第1 6圖和第1 7圖來說明本發明所涉及的複 合光學單元的第二實施例。第1 6圖是第二實施例所涉及的 複合光學單元101的斷面圖，第17圖是在第二實施例所涉 及的複合光學單元1 0 1中所包括的光束整形構件1 09的主要 部分放大斷面圖。 經濟部智慧財產局g(工消費合作社印製 ------ II 1·_ (請先閱讀背面之注意事項再填寫本頁} 線 如第16圖和第17圖所示，本實施例的複合光學單元 101的特徵在於：在光束整形部109a中包括形成爲三角棱 鏡的光束整形構件109。光束整形部109a(三角棱鏡），如 第17圖所示，雷射光束的入射面109a’形成在相對於中心 軸N ’傾斜的傾斜面上，雷射光的出射面1 0 9 a 形成在相對 於中心軸N ’垂直的平面上，以使從兩波長雷射二極體1 〇 2 所射出的雷射光的短徑方向向著入射面1 0 9 a ’的傾斜方向 而進行入射，由此，能夠把從出射面1 09a 所射出的雷射 光的點形狀整形爲圓形。即’如上述那樣，由於從兩波長 雷射二極體1 0 2所射出的雷射光的點形狀爲橢圓形，則通 過使其短徑方向向著入射面1 0 9 a ’的傾斜方向進行入射， 而擴大了雷射光的短徑方向，而能夠把雷射光的點形狀整 形爲圓形。 入射面1 0 9 a ’相對於出射面1 0 9 a 的傾斜角度0 ，；^ 光束擴大率爲m並且構成複合光學構件1 〇 5的樹脂材料白勺 折射率爲n時，可以用下式求出： Θ =sin_ Im2- l)/(n2m2— 1)} 1紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐) ~ '-- -24- 591631 A7 B7 i、發明説明（^ 從該式，作爲一個例子，當m = 2.5，n= 1.5時，θ =39.3 ο 本例的複合光學單元101所涉及的外殻106，如第16圖 所示，相對於用於設定光束整形構件109的臺階部l〇6m和 複合光學構件105的容納室l〇6c，兩波長雷射二極體102的 容納室106a傾斜設置，在容納室106a中插入兩波長雷射二 極體102的帽部l〇2e，在安裝坑洞106b中嵌入兩波長雷射 二極體102的基體部l〇2a，由此，能夠使從兩波長雷射二 極體102所射出的雷射光相對於光束整形部l〇9a的入射面 109a’以得到所需要的光束整形效果的所需要的入射角度 進行入射。 對於其他部分，由於與第一實施例所涉及的複合光學 單元1 0 1和光束整形構件1 09相同，因此，對相對應的部分 使用相同標號而省略其說明。 本例的複合光學單元101除了具有與第一實施例所涉 及的複合光學單元101相同的效果之外，使用在光束整形 部1 0 9 a中所形成的三角棱鏡來作爲光束整形構件1 0 9，相 對於該三角棱鏡的入射面，傾斜配置從兩波長雷射二極體 1 0 2所射出的雷射光的光軸，相對於三角棱鏡的入射面， 傾斜地入射上述雷射光，以使整形後的雷射在上述外殻 106的中心軸方向射出，因此，能夠使外殼1〇6中的兩波長 雷射二極體102的安裝部相對於外殼106中的光束整形構件 1 09的安裝部以及複合光學構件1 05的安裝部傾斜，能夠簡 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） (請先閱讀背面之注意事項再填寫本頁) '-s'口 經濟部智慧財產局Μ工消費合作社印製 25- 591631 經濟部智慧財產局8工消費合作社印製 A7 B7五、發明説明（土 化兩波長雷射二極體102向所需要的安裝部的女裝。 此外，在上述實施例中，使用具有波長不同的兩個光 源1 0 3 a，1 0 3 b的兩波長雷射二極體1 〇 2作爲發光構件，但 是，也可以使用僅包括一個光源的發光構件，也可以使用 具有波長不同的3個以上的光源的發光構件。 而且，在上述第一實施例中，在光束整形部109a中使 用圓柱形透鏡作爲光束整形構件1 09，在上述第二實施例 中，在光束整形部109a中使用三角棱鏡作爲光束整形構件 109，取代上述構成，可以在光束整形部109a中設置例如 圓形衍射光柵等其他的光束整形裝置。 下面使用第1 8圖〜第20圖以及第一實施例的圖來說明 本發明的第三實施例。 第18圖是包括第三實施例所涉及的複合光學單元的光 拾取裝置1 00的構成圖，第1 9圖是第三實施例所涉及的複 合光學構件105的主視圖，第20圖是用於說明複合光學構 件105的功能的示意圖。 如第1 8圖所示，光拾取裝置1 00主要由以下部分構成 :拾取器本體即載架500、配置在該載架500內的複合光學 單元101、平板狀的反射鏡300、准直透鏡400、物鏡200。 在複合光學單元101中包括複合光學構件105。 光拾取裝置100面對光碟例如CD61或者DVD62而配置 ，在作爲與CD61 (DVD62)的盤表面正交的方向的聚焦（F)方 向和作爲CD61(DVD62)的半徑方向的跟蹤（T)方向上可動 支撐物鏡200。而且，物鏡200構成爲能夠適應於CD61和 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂 -26-5. Description of the Invention (A) A composite optical unit including a beam shaping member 1 09 is compactly constructed. Next, a second embodiment of the composite optical unit according to the present invention will be described with reference to FIGS. 16 and 17. FIG. 6 is a cross-sectional view of the composite optical unit 101 according to the second embodiment, and FIG. 17 is an enlarged view of a main part of the beam shaping member 1 09 included in the composite optical unit 1 0 1 according to the second embodiment. Section. Intellectual Property Bureau of the Ministry of Economic Affairs (printed by Industrial and Consumer Cooperatives ------ II 1 · _ (Please read the precautions on the back before filling out this page) The lines are shown in Figures 16 and 17 The composite optical unit 101 of this embodiment is characterized in that the beam shaping section 109a includes a beam shaping member 109 formed as a triangular prism. The beam shaping section 109a (triangular prism), as shown in FIG. 17, The incident surface 109a 'is formed on an inclined surface that is inclined with respect to the central axis N', and the exit surface 1 0 a of the laser light is formed on a plane perpendicular to the central axis N 'so that the two-wavelength laser diode 1 〇2 The short diameter of the laser light emitted The incident light is incident toward the oblique direction of the incident surface 10 9 a ′, whereby the point shape of the laser light emitted from the emission surface 1 09 a can be shaped into a circle. The point shape of the laser light emitted by the radiating diode 1 02 is elliptical, and the short-axis direction of the laser light is increased by making the short-axis direction enter the oblique direction of the incident surface 10 9 a ′. The point shape of the laser light can be shaped into a circle. Inclination angle 0 of the incident surface 1 0 a 'with respect to the outgoing surface 1 0 9 a; ^ The resin whose beam expansion ratio is m and which constitutes the composite optical member 105 When the refractive index of the material is n, it can be obtained by the following formula: Θ = sin_ Im2- l) / (n2m2— 1)} 1 The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) ~ '- --24- 591631 A7 B7 i. Description of the invention (^ From this formula, as an example, when m = 2.5 and n = 1.5, θ = 39.3 ο the housing 106 of the composite optical unit 101 of this example, such as As shown in FIG. 16, with respect to the stepped portion 106 m for setting the beam shaping member 109 and the combined light The accommodating chamber 106c of the member 105 and the accommodating chamber 106a of the two-wavelength laser diode 102 are arranged obliquely, and the cap portion 102e of the two-wavelength laser diode 102 is inserted into the accommodating chamber 106a. The base portion 102a of the two-wavelength laser diode 102 is embedded in the center, so that the laser light emitted from the two-wavelength laser diode 102 can be made relative to the incident surface 109a 'of the beam shaping portion 109a. Obtain the required angle of incidence to obtain the desired beam shaping effect. The other parts are the same as the composite optical unit 101 and the beam shaping member 1009 according to the first embodiment. Therefore, the corresponding parts are designated by the same reference numerals and their descriptions are omitted. The composite optical unit 101 of this example has the same effects as the composite optical unit 101 according to the first embodiment, and uses a triangular prism formed in the beam shaper 1 0 9 a as the beam shaper 1 0 9 The optical axis of the laser light emitted from the two-wavelength laser diode 102 is inclined with respect to the incident surface of the triangular prism, and the above-mentioned laser light is incident at an angle with respect to the incident surface of the triangular prism, so that after shaping The laser is emitted in the direction of the central axis of the casing 106, so that the mounting portion of the two-wavelength laser diode 102 in the casing 106 can be compared with the mounting portion of the beam shaping member 109 in the casing 106 and The mounting part of the composite optical component 105 is tilted, and the paper size can be simplified. The Chinese national standard (CNS) Α4 specification (210 × 297 mm) can be used. (Please read the precautions on the back before filling this page.) Printed by the Bureau of Industrial Property and Consumer Cooperatives 25-591631 Printed by the Ministry of Economic Affairs and Intellectual Property Bureau of 8 Industrial Consumer Cooperatives A7 and B7 V. Description of the Invention (Earthquake two-wavelength laser diode 102 to the required installation department In addition, in the above-mentioned embodiment, the two-wavelength laser diode 1 02 having two light sources 10 3 a and 10 3 b having different wavelengths is used as the light emitting member, but it is also possible to use only one As the light-emitting member of the light source, a light-emitting member having three or more light sources having different wavelengths may be used. Furthermore, in the first embodiment described above, a cylindrical lens is used as the beam-shaping member 109 in the beam-shaping section 109a. In the second embodiment, a triangular prism is used as the beam shaping member 109 in the beam shaping section 109a. Instead of the above configuration, another beam shaping device such as a circular diffraction grating may be provided in the beam shaping section 109a. FIGS. 20 to 20 and the first embodiment illustrate the third embodiment of the present invention. FIG. 18 is a configuration diagram of an optical pickup device 100 including a composite optical unit according to the third embodiment. The figure is a front view of the composite optical member 105 according to the third embodiment, and FIG. 20 is a schematic diagram for explaining the function of the composite optical member 105. As shown in FIG. 18, The pick-up device 100 is mainly composed of the following: a pickup body, that is, a carrier 500, a composite optical unit 101 arranged in the carrier 500, a flat mirror 300, a collimator lens 400, and an objective lens 200. In the composite optical unit A composite optical member 105 is included in 101. The optical pickup device 100 is arranged facing an optical disc such as CD61 or DVD62, and has a focus (F) direction as a direction orthogonal to the disc surface of CD61 (DVD62) and a radius of CD61 (DVD62). Tracking (T) direction supports the objective lens 200. In addition, the objective lens 200 is configured to be able to adapt to CD61 and this paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) (Please read the precautions on the back first) (Fill in this page again) Order-26-

五、發明説明（i DVD62雙方。 (請先閱讀背面之注意事項再填寫本頁) 複合光學單元101是這樣的感光發光一體型光學元件 :把雷射光照射到光碟上’通過接收來自光碟的反射光（ 返回光），來重放記錄在光碟上的資訊，或者，向光碟上 記錄資訊。如第1圖所示，其主要由以下部分構成：作爲 發光構件的兩波長雷射二極體102、內置了感光元件104a 的感光構件1 0 4、複合光學構件1 〇 5、印刷電路板1 〇 7、這 些構件所安裝固定的外殼106。 經濟部智慧財產局R工消費合作社印製 兩波長雷射二極體102，與第一實施例相同，如第2圖 所示，由以下部分組成：圓板狀的基體部1 〇2a、從基體部 102a的一方的平面部102a’突出設置的正方體形的基台i〇2b 、定位並固定在基台102b的側壁表面上的雷射器晶片1〇3 、安裝固定在平面部102a’上由筒狀的本體部丨〇2(：和形成 開口部102d’的天板102d組成以包容基台l〇2b的帽部102e、 固定成從帽部1 〇 2 e的內側堵塞開口部1 〇 2 cT的透明的圓板 狀的玻璃板102f。在具有基體部102a、帽部l〇2e和玻璃板 1 0 2 f而構成的密閉的空間內配置雷射器晶片1 〇 3。在該雷 射器晶片103中，隔開微小的間隔D形成：射出DVD用的短 波長（波長650nm帶）的雷射光103a’的光源l〇3a和射出CD用 的長波長（波長780nm帶）的雷射光103b’的光源l〇3b。而且 ，在本實施例中，把間隔D設定爲120//m。而且，DVD用 的65 0nm帶，具體地說，採用635nm或者650nm作爲DVD標 準。 而且，從光源103a，103b分別射出的雷射光l〇3a’、 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -27- 59l63l A7 ^ 五、發明説明（1 l〇3b’通過開口部l〇2d’射出’以便於在與基體部102a的一 方的平面部l〇2a’正交的方向上成爲相互平行的。而且， 雷射光1 0 3 a ’、1 0 3 b ’的射出位置成爲雷射器晶片1 0 3的頂端 袠面103’（配置成與平面部l〇2a’相平行）的同一平面上。而 且，從與基體部102a的一方的平面部102a’相對側的另一 方的平面部突出設置多個外部連接端子102g(參照第18圖） ，通過該外部連接端子102g來進行給雷射器晶片103的驅 動電流的供電。 而且，在製作兩波長雷射二極體1 0 2的工序中，包括 兩個光源l〇3a、103b的雷射器晶片103在預定的基板表面 上通過與半導體處理相類似的處理來進行加工，因此，各 個光源103a、103b間的間隔D能夠容易地以高精度均勻地 形成爲預定的値。因此，作爲離散零件，能夠進行大量生 爲，因此，兩波長雷射二極體1 02的成本可以是廉價的。 感光構件104，如第18圖所示，內置感光元件104a， 並且由在該感光元件1 0 4 a的感光面側設置感光窗1 0 4 b ’的 元件104b和從元件104b突出設置到兩側的外部連接端子 104c所構成，通過外部連接端子l〇4c來進行向感光元件 104a的電源電壓的提供和由感光元件l〇4a所光電變換的信 號向外部的輸出。 第1 9圖所示的複合光學構件1 〇5，與第一實施例相同 ，由透明度較高的樹脂材料的成型體組成，由光軸N方向 的兩端面平行地所形成的略圓錐狀的基體部105c、從上述 兩波長雷射二極體102所射出的雷射光的入射面l〇5a、把 1紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ' -28- ------1__— 士_| (請先閱讀背面之注意事項再填寫本頁) 訂 線 經濟部智慧財產局員工消費合作社印製 591631 A7 B7 i、發明説明（‘ -----!!.f (請先閱讀背面之注意事項再填寫本頁) 從上述兩波長雷射二極體102所射出的雷射光向著光碟射 出的出射面105b、把來自光碟的返回光傳導到上述感光元 件104a上的反射面105 d—體地形成。而且，本實施例所涉 及的複合光學構件1 0 5，來自光碟的返回光的入射面兼用 做上述出射面105b，來自光碟的返回光射入上述出射面 105b。 線 經濟部智慧財產局員工消費合作社印製 入射面105a形成爲圓柱形的凹面，出射面105b的曲率 與入射面105a不同，並且形成爲：曲面的中心軸方向配置 成與入射面105 a相平行的圓柱形的凸面。這些入射面l〇5a 和出射面105b的曲率，在把從兩波長雷射二極體10 2所射 出的雷射光的短徑方向向著該入射面l〇5a的中心軸方向射 入入射面105a的中心時，被調整成使從出射面105b所射出 的雷射光的點形狀成爲圓形的。例如，當複合光學構件 105的兩端面的距離爲4mm時，通過使入射面105 a成爲焦 點距離爲2.6的凹面，使出射面105b成爲焦點距離爲6.6的 凸面，就能把從上述兩波長雷射二極體102所射出的雷射 光的點形狀整形爲圓形。即，由於從兩波長雷射二極體 1 02所射出的雷射光的點形狀爲橢圓形的，則通過使其短 徑方向向著入射面1 0 5 a的中心軸方向來入射，就能與在入 射面105a與出射面105b平行地形成的複合光學構件的雷射 光入射側或者出射側配置了圓柱形透鏡的情況相同，把從 出射面105b所射出的雷射光的點形狀整形爲圓形的。 而且，如第一實施例的第4圖所示，在上述入射面 10 5a上，使從兩波長雷射二極體102所射出的雷射光衍射 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -29- 59l63l A7 B7 五、 發明説明（ >7 ，形成用於生成照射在CD上的跟蹤控制用以及資料重放 用的三束用衍射光柵105h。 請 先 閱 讀 背 ιέ 5 i 事 項 再 填 寫 本 頁 如第5圖所示，在出射面1 0 5 b的中央部形成用於把來 自光碟的返回光傳導到反射面105 d上的方形的第一衍射光 柵105f 0 訂 反射面105 d成爲相對於複合光學構件105的兩端面傾 斜的傾斜面，在該反射面1 0 5 d的表面上，如第4圖所示 形成用於校正返回光的路徑的反射型的第二衍射光柵105^ 。在由該反射面105d所反射的返回光的通過路徑上，平坦 表面105η跨過基體部105c的周面而形成。而且，如第6圖 所示，從該平坦表面l〇5n的邊緣部，用於進行由像散法所 進行的聚焦控制的圓柱面1 〇 5 i形成爲成爲與光軸Ν成預定 角度α的溝狀，該圓柱面105 i的內壁成爲返回光出射面 105p。 經濟部智慧財產局S工消費合作社印製 而且，在本實施例所涉及的複合光學構件1 05中，上 述第一衍射光柵105f、第二衍射光柵105g以及三束用衍射 光柵105h與上述入射面105a、出射面105b、基體部105c、 反射面105d和圓柱面105i—起使用成型模具而一體成型。 對於這些衍射光柵105f、105g、105h的功能，在後面進行 詳細的說明。 基體部105c形成爲：從入射面105a到出射面l〇5b側直 徑依次變小的略圓錐形，在該基體部l〇5c的前端部形成圓 柱狀部105j，其圓柱面105厂成爲對外殼106的第一限制部 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -30- 591631 經濟部智慧財產局員工消費合作社印製 A7 B7 1、發明説明（j 28 如第4圖所示，在該基體部l〇5c的後端側即入射面 1 〇 5 a和反射面1 0 5 d的形成部側的外周面上，具有半圓柱狀 的外表面的4個突出部105k’在周向大致均等地配置，這些 突出部105k’的柱狀面成爲對外殼106的第二限制部。而且 ，在該基體部l〇5c的後端面（包含上述入射面l〇5a的一部 分和上述反射面l〇5d的一部分）上，如第4圖和第14圖所示 ，在與上述各個突出部l〇5k’相對的部分，以預定深度凹 進形成用於緩衝複合光學構件105對外殼106的壓入力的空 間部105s。 而且，如第19圖所示，在基體部l〇5c的中央部，向下 突出形成圓柱狀的位置限制突出部l〇5m。 而且，本實施例的複合光學構件105，把出射面105b 和返回光入射面作爲同一平面，但是，也可以分別設置出 射面和返回光入射面，在該返回光入射面上形成第一衍射 光柵。 第9圖〜第1 3圖所示的外殼1 06由鋁模鑄製造的塊組成 ，主要由筒狀本體部1 0 6 g、從該筒狀本體部1 〇 6 g的兩端部 分別向外方突出設置的安裝部l〇6h，106i組成。在這些安 裝部106h，106i上分別形成方形的安裝面l〇6h’，106i’。 如第1 0圖所示，在筒狀本體部1 〇6g的左端部的內表面 上形成用於容納第2圖所示的兩波長雷射二極體1 的容納 室106a，接著其，在左端面上凹進形成用於定位並安裝兩 波長雷射二極體102的安裝坑洞l〇6b。另一方面，在筒狀 本體部1 0 6 g的右端部的內表面上’形成用於容納土 1 9所示 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）V. Description of the invention (i DVD62 both sides. (Please read the precautions on the back before filling out this page) The composite optical unit 101 is a light-emitting integrated optical element that irradiates laser light onto the optical disc 'by receiving reflection from the optical disc Light (return light) to reproduce information recorded on the optical disc, or to record information on the optical disc. As shown in Figure 1, it is mainly composed of the following two parts: a two-wavelength laser diode 102 as a light emitting member , Photosensitive member 104 with built-in photosensitive element 104a, Composite optical member 1 05, Printed circuit board 1 07, These cases are fixed and mounted with a housing 106. The two industries of the Intellectual Property Bureau of the Ministry of Economic Affairs, R Industrial Consumer Cooperative, printed two-wavelength mines. The emitter diode 102 is the same as the first embodiment, and as shown in FIG. 2, the emitter diode 102 is composed of a circular plate-shaped base portion 102a and a cube protruding from one of the flat portions 102a 'of the base portion 102a. A shaped abutment i02b, a laser wafer 103 positioned and fixed on the side wall surface of the abutment 102b, and fixed and fixed on a flat portion 102a 'by a cylindrical body portion The top plate 102d of 102d 'is composed of a transparent disk-shaped glass plate 102f that includes a cap portion 102e containing the abutment 102b and is fixed to block the opening portion 102c from the inside of the cap portion 102e. The laser chip 103 is arranged in a closed space composed of the base portion 102a, the cap portion 102e, and the glass plate 102f. The laser chip 103 is formed with a minute interval D: The light source 103a 'of the short-wavelength (wavelength 650nm band) laser light 103a' for DVD and the light source 103b 'of the long-wavelength (wavelength 780nm band) laser light 103b' for CD. In this embodiment, The interval D is set to 120 // m. In addition, the 650nm band for DVD, specifically, 635nm or 650nm is adopted as the DVD standard. Furthermore, the laser light 103a and 103b emitted from the light sources 103a and 103b are respectively The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -27- 59l63l A7 ^ V. Description of the invention (1 103b 'through the opening 102d' eject 'to facilitate the side with the base 102a The plane portions 102a 'of the planes become mutually parallel in a direction orthogonal to each other. Furthermore, the laser The emission positions of 1 0 3 a ′ and 10 3 b ′ are on the same plane as the top end surface 103 ′ of the laser chip 103 (arranged in parallel with the flat portion 10 2 a ′). A plurality of external connection terminals 102g (refer to FIG. 18) are protrudingly provided on one flat portion 102a 'on the opposite side of the base portion 102a (see FIG. 18), and the drive current to the laser chip 103 is performed by the external connection terminals 102g. Power supply. Furthermore, in the process of manufacturing the two-wavelength laser diode 102, the laser wafer 103 including two light sources 103a and 103b is processed on a predetermined substrate surface by a process similar to a semiconductor process. Therefore, the interval D between the light sources 103a and 103b can be easily formed into a predetermined chirp uniformly with high accuracy. Therefore, as a discrete component, a large number of generations can be performed, and therefore, the cost of the two-wavelength laser diode 102 can be inexpensive. As shown in FIG. 18, the photosensitive member 104 has a built-in photosensitive element 104a, and an element 104b provided with a photosensitive window 1 0 4b 'on the photosensitive surface side of the photosensitive element 1 0a and protruding from the element 104b to both sides The external connection terminal 104c is used to provide the power supply voltage to the photosensitive element 104a through the external connection terminal 104c and output the signal photoelectrically converted by the photosensitive element 104a to the outside. Similar to the first embodiment, the composite optical member 105 shown in FIG. 19 is formed of a molded body of a resin material having high transparency, and is formed into a substantially conical shape formed by parallel ends of the optical axis N direction. The base 105c, the incident surface 105a of the laser light emitted from the above-mentioned two-wavelength laser diode 102, and the 1 paper size is applied to the Chinese National Standard (CNS) A4 specification (210X297 mm) '-28-- ---- 1 __— Taxi _ | (Please read the notes on the back before filling this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed 591631 A7 B7 i. Invention Description ('----- !! .f (Please read the precautions on the back before filling in this page) The laser light emitted from the two-wavelength laser diode 102 described above is directed to the exit surface 105b of the optical disc, and the return light from the optical disc is transmitted to the above-mentioned photosensitive element 104a. The reflecting surface 105 d is integrally formed. In addition, in the composite optical member 105 according to this embodiment, the incident surface of the return light from the optical disc also serves as the exit surface 105b, and the return light from the optical disc enters the exit Face 105b. Intellectual Property of the Ministry of Economic Affairs The employee's consumer cooperative printed incident surface 105a is formed as a cylindrical concave surface, and the exit surface 105b has a curvature different from that of the incident surface 105a, and is formed such that the central axis direction of the curved surface is arranged as a cylindrical convex surface parallel to the incident surface 105a. The curvatures of the incident surface 105a and the exit surface 105b are incident on the incident surface 105a in the minor axis direction of the laser light emitted from the two-wavelength laser diode 102 toward the center axis direction of the incident surface 105a. Is adjusted so that the spot shape of the laser light emitted from the exit surface 105b becomes circular. For example, when the distance between the two end surfaces of the composite optical member 105 is 4 mm, the incident surface 105 a becomes the focal distance The concave surface is 2.6, and the exit surface 105b becomes a convex surface with a focal distance of 6.6, so that the point shape of the laser light emitted from the two-wavelength laser diode 102 can be rounded. That is, since the two-wavelength laser The point shape of the laser light emitted by the radiating diode 102 is elliptical. By making the short-axis direction incident on the center axis direction of the incident surface 1 0 5 a, the incident light can be transmitted on the incident surface 105 a and the outgoing surface. 105b The same applies to the case where cylindrical lenses are arranged on the incident or exit side of the laser light of the composite optical member formed in parallel, and the dot shape of the laser light emitted from the exit surface 105b is shaped to be circular. Also, as in the first embodiment As shown in Figure 4, on the incident surface 105a, the laser light emitted from the two-wavelength laser diode 102 is diffracted. The paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm)- 29- 59l63l A7 B7 V. Explanation of the invention (> 7) A three-beam diffraction grating 105h for generating tracking control and data reproduction for irradiation on a CD is formed. Please read Back 5 i before filling in this page. As shown in Figure 5, a square first part is formed in the center of the exit surface 1 0 5 b for transmitting the returning light from the optical disc to the reflective surface 105 d. The diffraction grating 105f 0 defines a reflecting surface 105 d that is an inclined surface that is inclined with respect to both end surfaces of the composite optical member 105. On the surface of the reflecting surface 1 0 5 d, a path for correcting the return light is formed as shown in FIG. 4. The reflection-type second diffraction grating 105 ^. On the passage path of the return light reflected by the reflecting surface 105d, the flat surface 105η is formed across the peripheral surface of the base portion 105c. Further, as shown in FIG. 6, from the edge portion of the flat surface 105 n, a cylindrical surface 1 0 5 i for performing focus control by the astigmatism method is formed so as to form a predetermined angle α with the optical axis N. The inner wall of the cylindrical surface 105 i becomes a return light exit surface 105 p. Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Industrial Cooperatives. In the composite optical member 105 according to this embodiment, the first diffraction grating 105f, the second diffraction grating 105g, the three-beam diffraction grating 105h, and the incident surface 105a, the exit surface 105b, the base portion 105c, the reflecting surface 105d, and the cylindrical surface 105i are integrally molded together using a molding die. The functions of these diffraction gratings 105f, 105g, and 105h will be described in detail later. The base portion 105c is formed into a slightly conical shape in which the diameter gradually decreases from the incident surface 105a to the exit surface 105b side, and a cylindrical portion 105j is formed at the front end portion of the base portion 105c. The first limitation of 106 This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -30- 591631 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 1. Description of the invention (j 28 as shown in Figure 4 As shown in the figure, on the outer peripheral surface of the rear end side of the base portion 105c, that is, the incident surface 105a and the reflective surface 105d, the outer peripheral surface has four semi-cylindrical projections 105k on the outer peripheral surface. 'The columnar surfaces of these protrusions 105k' are arranged approximately evenly in the circumferential direction and serve as the second restricting portion for the housing 106. The rear end surface of the base portion 105c (including a part of the incident surface 105a described above) And a part of the reflecting surface 105d), as shown in FIG. 4 and FIG. 14, in the portion opposite to each of the protruding portions 105k ′, the recessed composite optical member 105 is formed by recessing at a predetermined depth. The space portion 105s of the press-in force to the case 106. Further, As shown in Fig. 19, at the central portion of the base portion 105c, a cylindrical position-limiting protrusion 105m is formed so as to project downward. Further, in the composite optical member 105 of this embodiment, the exit surface 105b and the return light The incident surfaces are the same plane, but the exit surface and the return light incident surface may be provided separately, and a first diffraction grating may be formed on the return light incident surface. The housing 106 shown in FIGS. 9 to 13 is made of an aluminum mold. The block is made of cast, and is mainly composed of a cylindrical body portion 106 g, and mounting portions 106h, 106i protruding from both ends of the cylindrical body portion 106 g, respectively. In these installations, Square mounting surfaces 106h ', 106i' are formed on the portions 106h, 106i, respectively. As shown in Fig. 10, the inner surface of the left end portion of the cylindrical body portion 106g is formed to accommodate the position shown in Fig. 2 The accommodating chamber 106a of the two-wavelength laser diode 1 shown in the figure is then recessed on the left end surface to form a mounting cavity 106b for positioning and mounting the two-wavelength laser diode 102. On the other hand, On the inner surface of the right end portion of the cylindrical body portion 10 g is formed to accommodate soil 1 Shown in 9 This paper size applies to China National Standard (CNS) A4 specification (210X297 mm)

線 (請先閱讀背面之注意事項再填寫本頁) -31 - 591631 A7 ______B7 五、發明説明（^ 的複合光學構件1 05的容納室1 06C，在其兩端側分別形成 插入形成在上述複合光學構件1 05上的第一限制部（圓柱面 10 5η的第一限制接受部106j和插入形成在上述複合光學 構件105上的第二限制部（突出部l〇5k’）的第二限制接受部1 0 6 k。這些各個容納室1 0 6 a，1 0 6 c相對於中心軸N ’同心地 形成。 用於容納上述複合光學構件105的容納室106c形成爲 這樣的圓錐面狀：用於容納上述兩波長雷射二極體102的 容納部106k側的直徑較大，延伸至安裝面106Γ側而依次減 小直徑。而且，第一限制接受部106j的直徑被設定爲這樣 的尺寸：能夠高精度地嵌合複合光學構件105(參照第19圖 )的圓柱狀部105j (直徑D1)，第二限制接受部l〇6k的直徑被 設定爲這樣的預定尺寸：短於外接設在複合光學構件1 05 的後端部1 0 5 k上的各個突出部1 0 5 k ’的頂端的外接圓的直 徑D2(參照第4圖）。 在上述容納室106c的前端部形成用於在中心軸Ν’方向 上定位複合光學構件105的定位部即頂觸面l〇6c’。在該頂 觸面106y上開設圓形的開口部106f，以使設在複合光學構 件105上的第一衍射光柵l〇5f從前方露出。 而且，在上述筒狀本體部l〇6g上’如第1〇圖和第13圖 所示，形成在上述容納室106a，106c中貫通的U字形的位 置限制溝106d和與該位置限制溝l〇6d的後端相連接並在上 述容納室106a的後端貫通的扇形的導向溝1〇6 cT。上述位 置限制溝106d的溝寬度被設定爲這樣的預定的尺寸··突出 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -32- 591631 A 7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（j 30 設置在複合光學構件105上的位置限制突出部105m的外徑 能夠高精度地嵌合。而且，在接近該容納部106g的上述位 置限制溝l〇6d的部分形成用於配置感光構件104的配置面 106e。該配置面l〇6e，如第18圖所示，當在上述安裝部 106h，106i的安裝面106^，106Γ上安裝電連接感光構件 104的印刷電路板107時，在上述各個安裝面106h’，106Γ 之間形成所需要的臺階，以使感光構件1 04不會影響外殼 106 ° 而且，用於外殼106的塊不僅可以由鋁模鑄件構成， 也可以由鋅模鑄件、鎂合金或者其他金屬等構成。 以下，參照第丨8圖來對兩波長雷射二極體1 02、感光 構件104和複合光學構件105向外殼106的安裝方法進行說 明。 在把位置限制突出部105m與形成在外殼106上的導向 溝106cT的開口部對齊的狀態下，從外殻106的安裝坑洞 10 6b插入複合光學構件105，用未圖示的所需要的夾具， 均勻地壓緊除入射面105a的衍射光柵105 h外的表面，由此 ，該基體部l〇5c嵌入容納室106c內。接著，在出射面105b 的外緣部接觸到形成在外殼106的容納室106c中的頂觸面 106c’的階段中，完成中心軸W方向對外殼106的定位。 此時，設在基體部105c上的圓柱狀部105j被嵌合在容 納室106c的第一限制接受部106j上，因此，基體部105c的 圓柱狀部105j的圓柱面105厂（限制面，參照第19圖）接觸到 第一限制接受部106j上，與基體部105c的前端部中的光軸 (請先閱讀背面之注意事項再填寫本頁) 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -33- 經濟部智慧財產局a(工消費合作社印製 591631 A7 B7 i、發明説明（4 N正交的方向的位置限制被高精度地完成。而且，與此同 時，基體部105c的後端部105k被壓入設在容納室106c上的 第二限制接受部106k。此時，如第14圖所示，形成在後端 部105k的外周面上的各個突出部l〇5k’分別成爲均勻壓緊 的狀態，各個突出部105k’的頂端面（限制面）與第二限制接 受部106k相接觸，與基體部l〇5c的後端部105k中的中心軸 IT正交的方向的位置限制被高精度地完成，同時，防止了 複合光學構件105從容納室106c的脫離。而且，通過把複 合光學構件105嵌入設在外殼106上的安裝坑洞106b，形成 在複合光學構件105上的位置限制突出部105m被導向到形 成在外殻106中的導向溝106d’中，被嵌入位置限制溝106d ，因此，繞中心軸Ν’的旋轉方向的位置限制被高精度地完 成。 這樣，本實施例的複合光學單元101，不僅可以把複 合光學構件105嵌入外殼106，而且可以進行複合光學構件 105對外殼106的中心軸IT方向的位置限制、與中心軸队正 交的方向的位置限制、繞中心軸Ν ’的旋轉方向的位置限制 ，因此，能夠容易並且高精度地進行複合光學單元101的 裝配。而且，本實施例的複合光學單元101，在與複合光 學構件105中的突出部105L的形成部相對應的部分凹進形 成空間部105s，因此，當把各個突出部105Γ的頂端面（限 制面）接觸到第二限制接受部106k上時，各個突出部105k: 的形成部在空間部105 s側彈性變形，由此，其壓入力被緩 和，能夠防止超過必要的壓入力作用到複合光學構件1 〇 ί 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） --------------IT------ (請先閱讀背面之注意事項再填寫本頁) -34- 59l63i A7 B7 i、發明説明（i 上，能夠防止光學功能部的變形，特別是第二衍射光柵 105g和三束用衍射光柵105h的變形。 兩波長雷射二極體102，把其帽部l〇2e(參照第2圖）插 入外殼106的容納室106a內，把基體部l〇2a嵌入形成在外 殻106上安裝坑洞106b中，由此，固定到外殼106上。由此 ，如第20圖所示，能夠使從兩波長雷射二極體102所射出 的雷射光的光軸N自動地與外殼106的中心軸Ν’相對齊，能 夠使從兩波長雷射二極體1 02所射出的雷射光射入到複合 光學構件105的入射面l〇5a的中心上，因此，能夠把雷射 光的點形狀整形爲圓形。 感光構件1 04，如第1 8圖和第20圖所示，通過印刷電 路板107安裝在外殼106上。該感光構件104對印刷電路板 107的安裝這樣進行：把元件104b的感光窗104b’側穿過設 在印刷電路板1 0 7上的通孔1 0 7 a，把外部連接端子1 0 4 c夾 持到形成在印刷電路板1 0 7表面上的夾持部（未圖示）上。 而且，可以根據需要，用粘接劑把元件1 04b堅固粘接到印 刷電路板107或者外殻106上。而且，固定感光構件104的 印刷電路板107，在配置成感光窗l〇4b’與形成在外殼106 上的位置限制溝106d相對的狀態下，被承載在安裝部106h ，106i的各個安裝面l〇6h’，106「上，用螺栓108進行螺旋 固定，而固定到外殼106上。而且，搭載感光構件104的印 刷電路板107 ’當通過預定的基準光學系統從光源1〇3a， 103b所射出的雷射光l〇3a’，103b’所對應的來自光碟的返 回光預先由第一衍射光柵105f和第二衍射光柵105g進行衍 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) -裝^-----訂------線 經濟部智慧財產局g(工消費合作杜印製 -35 591631 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（▲ 射時，調整爲最適當地引導到感光元件104a的預定位置F 上，然後，固定在安裝面106h’，106Γ上。 下面對光拾取裝置100所進行的DVD62和CD61的重放 動作進行說明。 在上述構成中，當重放DVD62時，如第18圖所示，從 兩波長雷射二極體102的光源103a射出的雷射光103a’透過 形成在複合光學構件105的入射面105a上的三束用衍射光 柵105 h而變換爲三束，然後，透過第一衍射光柵l〇5f，從 出射面105b射出。 接著，該雷射光l〇3a’通過配置成與雷射光103a’的行 進方向成45度的反射鏡3 00而使其角度偏向90度，並射入 配置在反射鏡300的上方的平行光管透鏡400中。接著，通 過該平行光管透鏡400而成爲大致平行光的雷射光103射 入物鏡200。通過物鏡200的聚光作用，成像在DVD62的資 訊記錄面上。 然後，由DVD62所反射的雷射光（返回光）l〇3a’再次透 過物鏡200，並透過平行光管透鏡400，由反射鏡3 00所反 射，然後，射入形成在第1 8圖所示的返回光入射面即形成 在出射面105b上的第一衍射光柵l〇5f，成爲衍射成預定的 衍射角度的一次衍射光的返回光l〇3a> — 2。返回光103a’ — 2接著被形成在複合光學構件105上的返回光反射面105 d所 反射，而入射到圓柱面105i中，從返回光出射面105p射出 。而且，射出的返回光103a’— 2通過位置限制溝106d(參照 第10圖，第13圖），而入射到感光構件的感光元件1〇心 (請先閲讀背面之注意事項再填寫本頁) 訂 本紙張尺度適用中國國家標率（CNS ) A4規格（210X 297公釐） -36- 591631 A7 B7 五、發明説明（^ 中的感光位置P上。 此時，由感光元件104a所接受的返回光103a>- 2被進 行光電變換，由此，通過把與DVD62的資訊記錄面的信號 相對應的電流輸出變換爲電壓信號而生成重放信號，從感 光構件1〇4的外部連接端子l〇4b被輸出，通過印刷電路板 107而傳導到外部。而且，由感光元件104a所接受的返回 光103a’- 2的一部分被用於聚焦和跟蹤控制。 另一方面，當重放CD 61時，從兩波長雷射二極體102 的光源103b射出的雷射光103b’，如第18圖所示，透過形 成在複合光學構件1 05的入射面1 05a上的三束用衍射光柵 105h而變換爲三束，然後，透過第一衍射光柵105f，從出 射面105b射出。接著，該雷射光103b’與DVD62時相同被傳 導到物鏡200，通過物鏡200的聚光作用，成像在CD61的 資訊記錄面上。 然後，由CD61所反射的返回光103b’再次透過物鏡200 、平行光管透鏡400，並由反射鏡300所反射，然後，射入 第一衍射光柵1 05f，成爲衍射成預定的衍射角度的一次衍 射光的返回光103b’— 2。返回光103y— 2接著被形成在複 合光學構件105上的返回光反射面105 d 所反射，射入圓 柱面105ι。在圓柱面105i中，返回光103b’— 2提供用於聚 焦控制的像散法，射出返回光出射面105p，而通過位置限 制溝106 d(參照第10圖，第13圖），而由感光元件104a中的 感光位置P所接受。此時，由感光元件104a所接受的返回 光103V - 2被進行光電變換，由此，通過把與CD61的資訊 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ------i!i, (請先閲讀背面之注意事項再填寫本頁)(Please read the precautions on the back before filling out this page) -31-591631 A7 ______B7 V. Description of the invention (^ of the composite optical member 1 05 in the receiving chamber 1 06C, the two ends of the composite optical member are inserted into the composite The first restriction portion on the optical member 105 (the first restriction receiving portion 106j of the cylindrical surface 105n) and the second restriction acceptance of the second restriction portion (the protruding portion 105k ') formed on the composite optical member 105 1 10 6k. These respective accommodation chambers 10 6 a, 10 6 c are formed concentrically with respect to the central axis N ′. The accommodation chamber 106 c for accommodating the above-mentioned composite optical member 105 is formed in such a conical shape: The diameter at the accommodating portion 106k side where the two-wavelength laser diode 102 is housed is larger, and the diameter is successively reduced to the mounting surface 106Γ side. Further, the diameter of the first restriction receiving portion 106j is set to such a size: The cylindrical portion 105j (diameter D1) of the composite optical member 105 (refer to FIG. 19) can be fitted with high accuracy, and the diameter of the second restriction receiving portion 106k is set to a predetermined size shorter than that provided externally in the composite Optical components 1 05 The diameter D2 (see FIG. 4) of the circumscribed circle at the tip of each of the protrusions 105k 'on the rear end 105k. The front end of the storage chamber 106c is formed in the direction of the central axis N'. The top contact surface 106c ', which is a positioning portion for positioning the composite optical member 105. A circular opening 106f is opened in the top contact surface 106y, so that the first diffraction grating 105f provided on the composite optical member 105 is once Further, as shown in FIG. 10 and FIG. 13, the cylindrical body portion 106 g is formed with a U-shaped position restriction groove 106 d penetrating through the accommodation chambers 106 a and 106 c and the position A fan-shaped guide groove 106 cT connected to the rear end of the restriction groove 106d and penetrating at the rear end of the accommodation chamber 106a. The groove width of the position restriction groove 106d is set to such a predetermined size. Paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page) Order printed by the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economics-32- 591631 A 7 B7 Wisdom of the Ministry of Economic Affairs Printed by the Consumer Cooperative of the Property Bureau Description (j 30 The outer diameter of the position-restricting protrusion 105m provided on the composite optical member 105 can be fitted with high accuracy. In addition, a portion for positioning is formed near the position-restricting groove 106d of the receiving portion 106g for placement. The arrangement surface 106e of the photosensitive member 104. As shown in FIG. 18, the arrangement surface 106e is when the printed circuit board 107 electrically connected to the photosensitive member 104 is mounted on the mounting surfaces 106h, 106i of the mounting portions 106h, 106i. The required steps are formed between each of the above mounting surfaces 106h ', 106Γ so that the photosensitive member 104 does not affect the housing 106 °. Moreover, the block for the housing 106 may not only be composed of aluminum die castings, but also zinc Composed of die castings, magnesium alloys or other metals. Hereinafter, a method of mounting the two-wavelength laser diode 102, the photosensitive member 104, and the composite optical member 105 to the case 106 will be described with reference to FIGS. In a state where the position-restricting protruding portion 105m is aligned with the opening portion of the guide groove 106cT formed in the housing 106, the composite optical member 105 is inserted from the mounting hole 10 6b of the housing 106, and a required fixture (not shown) is used. The surface other than the diffraction grating 105 h of the incident surface 105 a is evenly pressed, so that the base portion 105 c is embedded in the receiving chamber 106 c. Next, in the stage where the outer edge portion of the emission surface 105b contacts the top contact surface 106c 'formed in the accommodation chamber 106c of the casing 106, positioning of the casing 106 in the direction of the central axis W is completed. At this time, the cylindrical portion 105j provided on the base portion 105c is fitted to the first restriction receiving portion 106j of the storage chamber 106c. Therefore, the cylindrical surface 105j of the cylindrical portion 105j of the base portion 105c (restricted surface, see (Figure 19) The optical axis in contact with the first restriction receiving part 106j and the front end part of the base part 105c (please read the precautions on the back before filling this page) The paper size of this edition applies the Chinese National Standard (CNS) A4 Specifications (210X297 mm) -33- Intellectual Property Bureau of the Ministry of Economic Affairs a (printed by the Industrial and Consumer Cooperatives 591631 A7 B7 i. Invention Description (Positioning restrictions in 4 N orthogonal directions are performed with high accuracy. Also, at the same time, The rear end portion 105k of the base portion 105c is press-fitted into the second restriction receiving portion 106k provided in the accommodation chamber 106c. At this time, as shown in FIG. 14, each protruding portion 1 formed on the outer peripheral surface of the rear end portion 105k 〇5k ′ are in a uniformly pressed state, and the top surface (restriction surface) of each protruding portion 105k ′ is in contact with the second restriction receiving portion 106k, and the central axis IT in the rear end portion 105k of the base portion 105c is positive. Position restriction in the direction of intersection is completed with high accuracy At the same time, detachment of the composite optical member 105 from the accommodating chamber 106c is prevented. Furthermore, by inserting the composite optical member 105 into the mounting cavity 106b provided in the housing 106, the position-limiting protrusion 105m formed on the composite optical member 105 is blocked. The guide is guided into the guide groove 106d 'formed in the housing 106, and is inserted into the position restriction groove 106d. Therefore, the position restriction in the rotation direction around the central axis N' is performed with high accuracy. Thus, the composite optical unit 101 of this embodiment Not only can the composite optical member 105 be embedded in the housing 106, but also the position limitation of the composite optical member 105 on the center axis IT direction of the housing 106, the position limitation in the direction orthogonal to the center axis team, and the rotation about the center axis N ' The position in the direction is restricted, so that the assembly of the composite optical unit 101 can be performed easily and with high accuracy. In addition, in the composite optical unit 101 of the present embodiment, the portion corresponding to the formation portion of the protruding portion 105L in the composite optical member 105 The recess forms the space portion 105s. Therefore, when the top surface (restriction surface) of each protruding portion 105Γ is brought into contact with the second When the receiving portion 106k is restrained, the forming portion of each protruding portion 105k: is elastically deformed on the 105s side of the space portion. As a result, the pressing force can be relaxed, and it is possible to prevent the pressing force from being applied to the composite optical member more than necessary. The dimensions are applicable to China National Standard (CNS) A4 specifications (210X297 mm) -------------- IT ------ (Please read the precautions on the back before filling this page)- 34- 59l63i A7 B7 i. Description of the invention (i) It is possible to prevent the deformation of the optical function, especially the second diffraction grating 105g and the three-beam diffraction grating 105h. The two-wavelength laser diode 102 has its cap portion 102e (see FIG. 2) inserted into the accommodating chamber 106a of the casing 106, and the base portion 102a is embedded in the mounting cavity 106b formed on the casing 106. Therefore, it is fixed to the case 106. As a result, as shown in FIG. 20, the optical axis N of the laser light emitted from the two-wavelength laser diode 102 can be automatically aligned with the central axis N ′ of the housing 106, and the two-wavelength laser can be aligned. The laser light emitted by the diode 102 is incident on the center of the incident surface 105a of the composite optical member 105, so that the point shape of the laser light can be shaped into a circle. The photosensitive member 104 is mounted on the casing 106 through a printed circuit board 107 as shown in Figs. 18 and 20. The mounting of the photosensitive member 104 on the printed circuit board 107 is performed by passing the photosensitive window 104b 'side of the element 104b through the through hole 1 0 7 a provided on the printed circuit board 1 0 7 and the external connection terminal 1 0 4 c It is clamped to a clamping portion (not shown) formed on the surface of the printed circuit board 107. Furthermore, the component 104b may be firmly adhered to the printed circuit board 107 or the case 106 with an adhesive as needed. Further, the printed circuit board 107 on which the photosensitive member 104 is fixed is carried on each of the mounting surfaces 106h, 106i of the mounting portion 106h in a state where the photosensitive window 104b 'is opposed to the position restriction groove 106d formed in the housing 106. 〇6h ', 106 ", screwed with the bolt 108 and fixed to the housing 106. Further, the printed circuit board 107' on which the photosensitive member 104 is mounted is emitted from the light sources 103a, 103b through a predetermined reference optical system The returning light from the optical disc corresponding to the laser light 103a ', 103b' is diffracted by the first diffraction grating 105f and the second diffraction grating 105g in advance. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling out this page) -Installation ^ ----- Order ------ The Intellectual Property Bureau of the Ministry of Economic Affairs (printed by Industrial and Consumer Cooperation Du-35-591 631 A7 B7) Printed by the Consumer Cooperative of the Property Bureau. 5. Description of the invention (▲ When shooting, it is adjusted to guide to the predetermined position F of the photosensitive element 104a most appropriately, and then fixed on the mounting surface 106h ', 106Γ. Next, the optical pickup device 100 All The playback operation of the DVD62 and CD61 will be described. In the above configuration, when the DVD62 is played back, as shown in FIG. 18, the laser light 103a 'emitted from the light source 103a of the two-wavelength laser diode 102 is transmitted through. The three beams on the incident surface 105a of the composite optical member 105 are converted into three beams by a diffraction grating 105h, and then transmitted through the first diffraction grating 105f and emitted from the exit surface 105b. Next, the laser light 103a ' The reflector 300, which is arranged at 45 degrees to the traveling direction of the laser light 103a ', is deflected at an angle of 90 degrees, and enters the collimator lens 400 arranged above the reflector 300. Then, the light passes through the parallel lens 400. The light pipe lens 400 and the laser light 103 which becomes substantially parallel light enter the objective lens 200. The light condensing effect of the objective lens 200 forms an image on the information recording surface of the DVD 62. Then, the laser light (return light) reflected by the DVD 62 is l0. 3a 'passes through the objective lens 200 again, and passes through the collimator tube lens 400, is reflected by the reflecting mirror 3 00, and then enters the returning light incident surface formed in FIG. 18, which is the first surface formed on the exit surface 105b. Diffraction grating 105f, The return light 103a which is a primary diffracted light diffracted to a predetermined diffraction angle — — 2. The return light 103a ′ — 2 is then reflected by the return light reflecting surface 105 d formed on the composite optical member 105 and is incident on a cylinder The surface 105i is emitted from the return light exit surface 105p. Further, the returned return light 103a'-2 passes through the position-limiting groove 106d (see Figs. 10 and 13) and is incident on the photosensitive element 10 center of the photosensitive member ( Please read the notes on the back before filling this page) The size of the paper is applicable to China National Standards (CNS) A4 (210X 297 mm) -36- 591631 A7 B7 V. Description of the invention (on the photosensitive position P in ^ . At this time, the return light 103a > -2 received by the photosensitive element 104a is subjected to photoelectric conversion, thereby converting a current output corresponding to a signal on the information recording surface of the DVD62 into a voltage signal to generate a playback signal from The external connection terminal 104b of the photosensitive member 104 is output, and is conducted to the outside through the printed circuit board 107. Further, a part of the return light 103a'-2 received by the photosensitive element 104a is used for focus and tracking control. On the other hand, when the CD 61 is played back, the laser light 103b ′ emitted from the light source 103b of the two-wavelength laser diode 102 passes through the incident surface 105a of the composite optical member 105 as shown in FIG. The above three beams are converted into three beams by the diffraction grating 105h, and then transmitted through the first diffraction grating 105f and emitted from the exit surface 105b. Next, the laser light 103b 'is guided to the objective lens 200 in the same manner as in the case of the DVD62, and is focused on the information recording surface of the CD61 by the focusing effect of the objective lens 200. Then, the return light 103b ′ reflected by the CD61 passes through the objective lens 200 and the collimator lens 400 again, and is reflected by the reflecting mirror 300, and then enters the first diffraction grating 105f to be diffracted into a predetermined diffraction angle once. The returned light 103b'-2 of the diffracted light. The returning light 103y-2 is then reflected by the returning light reflecting surface 105d formed on the composite optical member 105, and enters the cylindrical surface 105m. In the cylindrical surface 105i, the return light 103b'-2 provides an astigmatism method for focus control. The return light exit surface 105p is emitted through the position-limiting groove 106d (see Figs. 10 and 13). The light receiving position P in the element 104a is accepted. At this time, the returned light 103V-2 received by the photosensitive element 104a is photoelectrically converted. Therefore, the paper size of the information with CD61 is applied to the Chinese National Standard (CNS) A4 specification (210X297 mm) ---- --i! i, (Please read the notes on the back before filling this page)

、1T 線 經濟部智慧財產局g(工消費合作社印製 -37- 591631 經濟部智慧財產局B(工消費合作社印製 A7 B7 五、發明説明（‘ 記錄面的信號相對應的電流輸出變換爲電壓信號’而形成 重放信號，從感光構件1〇4的外部連接端子1045被輸出’ 通過印刷電路板107，傳導到外部。而且，由感光元件 104a所接受的返回光l〇3b’ - 2的一部分被用於像散法所進 行的聚焦控制和三束所進行的跟蹤控制。 而且，在光拾取裝置1〇〇中，可以在出射面i〇5b與物 鏡200之間的光路中設置限制從複合光學構件1〇5射出的雷 射光103a’，103b’的光束的直徑的波長濾光鏡等。 下面對複合光學構件105中包括各個衍射光柵1 〇5f、 105g、105h的功能進行說明。 如第20圖所示，與從複合光學構件105的出射面105b 射出的雷射光l〇3a’、103b’相對應的分別來自DVD62和 C D 6 1的返回光分別由形成在出射面1 〇 5 b上的第一衍射光 柵105f所衍射，而成爲返回光103a’— 2和返回光103b’ — 2。此時，由於對應於CD61的返回光103b’ 一 2的波長長於 對應於DVD62的返回光103a’— 2的波長，因此，返回光 103b’- 2的衍射角度，大於返回光103a> — 2的衍射角度（利 用這樣的原理：在衍射光柵中，波長越長，衍射角度越大 )° 而且，利用該衍射角度的差，使在被衍射之前雷射光 103a’、l〇3b’各自的光軸間距離爲D的狀態，當返回光1032 ’―2、返回光l〇3b’— 2到達返回光反射面105d 時，兩者 的到達位置相一致。 但是，在複合光學構件105的返回光反射面105d 中 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） I 批衣n 訂 I 線~ (請先閱讀背面之注意事項再填寫本頁) -38- 591631 A7 B7 五、發明説明（‘ ，把返回光l〇3a，— 2、返回光103b’— 2簡單地反射’由於 雙方的雷射光的入射角不同，就不能使兩個返回光1 〇 3 a 5 —2、返回光103V - 2相一致地向著感光元件l〇4a的感光 位置P。爲了校正其，在返回光反射面l〇5d 上設置第二 衍射光柵l〇5g。即，利用入射到第二衍射光柵105g中的返 回光103a’- 2和返回光103b’- 2再次由波長不同所爲生的 衍射角度的差，來使由返回光反射面1 05d 反射的返回光 103 a’ — 2和返回光103b’一 2雙方的光軸相一致。 這樣，能夠把由第一衍射光柵1 05f分別所衍射的返回 光103a’ — 2和返回光103b’ — 2校正爲都由感光元件104a的 感光位置P所接受，即使使用2波長的光源103a、103b，也 能用具有一個感光元件l〇4a的感光構件104來接受雙方的 雷射光。 如上述那樣，根據本實施例，如第1 8圖所示，具有安 裝在光拾取裝置100上的外殻106，在外殼106中安裝固定 兩波長雷射二極體102和感光構件104以及複合光學構件 105，兩波長雷射二極體102具有發射DVD用的短波長雷射 的雷射二極體103a和發射CD用的長波長雷射二極體l〇3b， 複合光學構件105設置了 ：從兩波長雷射二極體1〇2射出的 光入射的入射面1 〇 5 a和射出的出射面1 〇 5 b、對由設在出射 面105b上的光碟D1(D2)所反射的返回光進行衍射的第一衍 射光柵l〇5f、把由第一衍射光柵105f所衍射的返回光反射 到感光構件104上的反射面105d，同時在反射面i〇5d上還 設置了使波長不同的光的光軸相一致而成像到感光構件 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ' (請先閱讀背面之注意事項再填寫本頁) 、11 經濟部智慧財產局員工消費合作社印製 -39- 591631 A7 B7 五、發明説明（^ (請先閱讀背面之注意事項再填寫本頁) 1 0 4的感光位置P上的第二衍射光柵1 〇 5 g ’因此，能夠用一 個複合光學單元101來適合於使用兩個不同波長的光拾取 裝置100。而且，感光構件104可以爲一個，能夠僅調整該 感光構件1 〇 4來進行位置配合’因此’不會使調整工序中 的成本增加。而且，使從兩波長雷射二極體102所射出的 雷射的出射面105b與入射來自光碟的返回光的返回光入射 面處於相同平面上，因此，從這點來看，能夠簡化構成。 而且，兩波長雷射二極體102由基體部102a、由帽部 102e和玻璃板102f構成的元件、從基體部102a突出設置的 外部連接端子102g所構成，感光構件104是由內置了感光 元件104a的元件104b和設在該元件104b上的外部連接端子 104c所構成的所謂分立構件，使用分別以單體廉價製造的 構件來構成複合光學單元1 0 1，因此，各構件的處理變得 容易，並且，向外殻106的裝配作業變得容易，能夠降低 構件成本和加工費。 經濟部智慈財產局員工消費合作社印製 而且，用廉價的樹脂材料來形成複合光學構件105， 同時，在複合光學構件105成型時，同時一體形成第一和 第二衍射光柵l〇5f，105g、三束用衍射光柵i〇5h、圓柱面 1 0 5 i，因此，成型時間可以縮短，能夠進一步降低複合光 學構件105的製造成本。 而且，由於在複合光學構件105中一體地包括光束整 形裝置，因此，能夠減少照射到光碟上的雷射功率的浪費 ，而能夠適合於例如DVD裝置等需要較大的雷射功率的光 碟裝置的光拾取器。而且，把光束整形裝置與從兩波長雷 本紙張尺度適用巾酬家標隼（CNS ) A4規格（210X297公釐)~" -40- 經濟部智慧財產局員工消費合作社印製 591631 ΚΊ Β7 五、發明説明（▲ 射二極體102所射出的雷射光的入射面105a、射出從兩波 長雷射二極體102所射出的雷射光並入射來自光碟的返回 光的出射面105b、把來自光碟的返回光傳導到感光構件上 的反射面一體地形成，因此，不需要各個部分的相互調整 ，能夠謀求複合光學單元的小型化和裝配的簡易化。而且 ，使複合光學構件105的入射面105a形成爲圓柱形的凹面 ，同時，使該複合光學構件105的出射面105b形成爲曲率 與上述入射面105a不同的圓柱形的凸面，由此，給複合光 學構件105提供了光束整形裝置，因此，能夠容易並且廉 價地實施製造和設計。 下面，根據第21圖來說明本發明所涉及的複合光學單 元的第四實施例。 如第2 1圖所示，本例的複合光學構件1 0 5，入射面 1 0 5 a形成爲相對於雷射光的光軸N傾斜的傾斜面，出射面 1 0 5 b形成爲相對於中心軸N ’垂直的平面上，以使從兩波長 雷射二極體1 02所射出的雷射光的短徑方向向著入射面 105a的傾斜方向而進行入射，由此，能夠把從出射面i〇5b 所射出的雷射光的點形狀整形爲圓形。即，如上述那樣， 由於從兩波長雷射二極體1 0 2所射出的雷射光的點形狀爲 橢圓形，則通過使其短徑方向向著入射面1 05a的傾斜方向 進行入射，由此，與在入射面與出射面1 0 5 b相平行所形成 的複合光學構件的雷射光入射側配置二角棱鏡，來使雷射 光傾斜地入射到該三角棱鏡中的情況相同，能夠把從出射 面105b射出的雷射光的點形狀整形爲圓形。 本矣氏張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） "' -41 - (請先閱讀背面之注意事項再填寫本頁) 訂 591631 A7 B7 五、發明説明（土 (請先閱讀背面之注意事項再填寫本頁) 入射面1 0 5 a相對於出射面1 〇 5 b的傾斜角度0，在光束 擴大率爲m並且構成複合光學構件1 〇 5的樹脂材料的折射 率爲η時，可以用下式求出： Θ =sin_1{(m2— l)/(n2m2— 1)} 從該式，作爲一個例子，當m = 2.5，η=1·5時，0=39.3 〇 本例的複合光學單元101所涉及的外殼106，如第21圖 所示，相對於複合光學構件1 0 5的容納室1 0 6 c，兩波長雷 射二極體102的容納室106a傾斜設置，在容納室i〇6a中插 入兩波長雷射二極體102的帽部102e，在安裝坑洞i〇6b中 嵌入兩波長雷射二極體102的基體部l〇2a，由此，能夠使 從兩波長雷射二極體1 0 2所射出的雷射光相對於複合光學 構件1 0 5的入射面1 0 5 a，以得到所需要的光束整形效果的 所需要的入射角度進行入射。 對於其他部分，由於與第三實施例所涉及的複合光學 單元101和複合光學構件105相同，因此，對相對應的部分 使用相同標號而省略其說明。 經濟部智慧財凌局員工消費合作社印製 本例的複合光學單元101和複合光學構件105除了具有 與第三實施例所涉及的複合光學單元101和複合光學構件 105相同的效果之外，作爲光束整形構件，使複合光學構 件105的入射面105a相對於從兩波長雷射二極體102所射出 的雷射光的入射方向傾斜，因此，設計和製造容易，能夠 容易地製造具有高精度的光束整形功能的複合光學構件 105 ° 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -42- 591631 A7 ____ _ _B7 五、發明説明（ 此外，在上述實施例中，使用具有波長不同的兩個光 源1 0 3 a，1 0 3 b的兩波長雷射二極體1 0 2作爲發光構件，但 是，也可以使用僅包括一個光源的發光構件，也可以使用 具有波長不同的3個以上的光源的發光構件。 【發明效果】 如上述的說明，本發明的複合光學單元，在外殼內一 體地設置發光構件和光束整形構件，因此，能夠減少照射 到光碟上的雷射功率的浪費，能夠適合於例如DVD裝置等 的需要較大的雷射功率的光碟裝置的光拾取器。而且，在 外殻的內表面與光束整形構件之間設置：用於限制光束整 形構件相對於從發光構件所射出的雷射光的光軸的傾斜角 度的第一限制裝置；用於限制光束整形構件相對於從發光 構件所射出的雷射光的光軸的旋轉方向位置的第二限制裝 置，由此，能夠不僅能夠把光束整形構件壓入外殼內，而 且，可以自動完成光束整形構件對雷射光的光軸的姿勢調 整，當光束整形構件向外殼中安裝時，不需要特別的用於 位置調整的夾具，因此，能夠容易地進行包括光束整形構 件的複合光學單元的裝配。 而且，本發明的複合光學單元，在光束整形構件中形 成光束整形部和從該光束整形部伸出的凸緣部以及形成在 該凸緣部上的限制突出部，在外殼的內表面上形成接觸上 述凸緣部的端面的臺階部和插入上述限制突出部的限制溝 ，具有上述臺階部和上述凸緣部的端面來構成上述第一限 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁)1T line Intellectual Property Bureau of the Ministry of Economy g (printed by the Industrial and Consumer Cooperatives-37- 591631 Intellectual Property Bureau of the Ministry of Economics B (printed by the Industrial and Consumer Cooperatives A7 B7 V. Description of the invention ('The current output corresponding to the signal on the recording surface is converted into The voltage signal 'forms a playback signal and is output from the external connection terminal 1045 of the photosensitive member 104.' It is transmitted to the outside through the printed circuit board 107. Further, the return light 103b 'received by the photosensitive element 104a is-2 A part of is used for the focus control by the astigmatism method and the tracking control by the three beams. Furthermore, in the optical pickup device 100, a limit can be set in the optical path between the exit surface i05b and the objective lens 200. Wavelength filters for the diameters of the laser beams 103a 'and 103b' emitted from the composite optical member 105. The functions of the composite optical member 105 including the respective diffraction gratings 105f, 105g, and 105h will be described below. As shown in FIG. 20, the return light from the DVD62 and CD 61 respectively corresponding to the laser light 103a 'and 103b' emitted from the output surface 105b of the composite optical member 105 is formed on the output surface, respectively. The diffracted by the first diffraction grating 105f on 105b becomes the return light 103a'-2 and the return light 103b'-2. At this time, since the wavelength of the return light 103b'-2 corresponding to CD61 is longer than that corresponding to DVD62 The wavelength of the return light 103a'-2, therefore, the diffraction angle of the return light 103b'-2 is greater than the diffraction angle of the return light 103a > -2 (using this principle: in a diffraction grating, the longer the wavelength, the more the diffraction angle Large) ° Furthermore, by using the difference in the diffraction angles, the distance between the respective optical axes of the laser light 103a 'and 103b' before being diffracted is D. When the return light 1032'-2, the return light 103b '— 2 When reaching the returning light reflecting surface 105d, the two reach the same position. However, in the returning light reflecting surface 105d of the composite optical member 105, the paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) I batch of clothes n order I line ~ (Please read the precautions on the back before filling this page) -38- 591631 A7 B7 V. Description of the invention (', return light 103a,-2, return light 103b'-2 Simply reflect 'due to thunder on both sides If the incident angles of the light are different, the two returning lights 1 0 3 a 5 -2 and the returning light 103V-2 cannot be aligned toward the photosensitive position P of the light receiving element 104a. To correct this, the returning light reflecting surface 1 A second diffraction grating 105g is provided on 05d. That is, the difference between the diffraction angles of the returning light 103a'-2 and the returning light 103b'-2 incident on the second diffraction grating 105g again due to different wavelengths, Then, the optical axes of the returning light 103 a ′-2 and the returning light 103 b ′ 2 reflected by the returning light reflecting surface 105d are aligned. In this way, the return light 103a'-2 and the return light 103b'-2 diffracted by the first diffraction grating 105f can be corrected to be both received by the photosensitive position P of the photosensitive element 104a, even if a light source 103a of two wavelengths is used, 103b. A photosensitive member 104 having one photosensitive element 104a can also be used to receive laser light from both sides. As described above, according to this embodiment, as shown in FIG. 18, the housing 106 is mounted on the optical pickup device 100, and the two-wavelength laser diode 102 and the photosensitive member 104 are fixed in the housing 106, and the composite An optical member 105, a two-wavelength laser diode 102 having a short-wavelength laser diode 103a for emitting DVD and a long-wavelength laser diode 103b for emitting CD, and a composite optical member 105 is provided. : The incident surface 1 05 a and the outgoing surface 1 05 b from which the light emitted from the two-wavelength laser diode 102 is incident, and the light reflected from the optical disc D1 (D2) provided on the outgoing surface 105b A first diffraction grating 105f that diffracts the return light, a reflection surface 105d that reflects the return light diffracted by the first diffraction grating 105f to the photosensitive member 104, and a different wavelength is provided on the reflection surface i05d. The optical axis of the light is consistent with the image on the photosensitive member. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm). '(Please read the precautions on the back before filling this page), 11 Intellectual Property Bureau, Ministry of Economic Affairs Printed by Employee Consumer Cooperatives-39- 591631 A 7 B7 V. Description of the invention (^ (Please read the precautions on the back before filling in this page) 1 0 4 The second diffraction grating 1 at the photosensitive position P 0 5 g 'Therefore, a composite optical unit 101 can be used to fit The optical pickup device 100 uses two different wavelengths. Moreover, there can be only one photosensitive member 104, and the position adjustment can be performed by adjusting only the photosensitive member 104, so that the cost in the adjustment process is not increased. Furthermore, From this point, it is possible to simplify the structure from the viewpoint that the exit surface 105b of the laser emitted from the two-wavelength laser diode 102 and the incident surface of the return light incident on the return light from the optical disc are on the same plane. The wavelength laser diode 102 is composed of a base portion 102a, an element composed of a cap portion 102e and a glass plate 102f, and an external connection terminal 102g protruding from the base portion 102a. The photosensitive member 104 is an element having a built-in photosensitive element 104a. The so-called discrete member composed of 104b and the external connection terminal 104c provided on the element 104b uses a member manufactured separately and inexpensively to constitute the composite optical unit 1 01. The processing of each component becomes easy, and the assembling operation to the case 106 becomes easy, which can reduce the component cost and processing cost. It is printed by the Consumer Cooperative of the Intellectual Property Office of the Ministry of Economic Affairs and it is formed with cheap resin materials At the same time, when the composite optical member 105 is molded, the first and second diffraction gratings 105f, 105g, the three-beam diffraction grating 105h, and the cylindrical surface 105x are integrally formed at the same time. The time can be shortened, and the manufacturing cost of the composite optical member 105 can be further reduced. Furthermore, since the beam shaping device is integrally included in the composite optical member 105, it is possible to reduce the waste of laser power irradiated onto the optical disc, and it is suitable for optical disc devices such as DVD devices that require a large laser power. Optical pickup. In addition, the beam shaping device and the two-wavelength Raben paper size are applied to the household standard (CNS) A4 specification (210X297 mm) ~ " -40- Printed by the Intellectual Property Bureau Staff Consumer Cooperative Society of the Ministry of Economic Affairs 591631 ΚΊ Β7 Five Explanation of the invention (▲ The incident surface 105a of the laser light emitted by the emitting diode 102, the outgoing surface 105b of the laser light emitted from the two-wavelength laser diode 102, and the incident light returning from the optical disc, The reflective surface of the return light that is transmitted to the photosensitive member is integrally formed. Therefore, it is not necessary to adjust each part, and it is possible to reduce the size and assembly of the composite optical unit. In addition, the incident surface 105a of the composite optical member 105 It is formed into a cylindrical concave surface, and at the same time, the exit surface 105b of the composite optical member 105 is formed into a cylindrical convex surface having a curvature different from that of the incident surface 105a. Thus, a beam shaping device is provided to the composite optical member 105. Manufacturing and design can be easily and inexpensively performed. Next, a fourth embodiment of the composite optical unit according to the present invention will be described with reference to FIG. 21. For example, as shown in FIG. 21, in the composite optical member 1 0 5 of this example, the incident surface 1 0 5 a is formed as an inclined surface inclined with respect to the optical axis N of the laser light, and the outgoing surface 1 0 5 b is formed as an opposite surface. On the plane perpendicular to the central axis N ′, the short-axis direction of the laser light emitted from the two-wavelength laser diode 102 is incident toward the oblique direction of the incident surface 105a, so that the light from the exit surface can be incident. The point shape of the laser light emitted by i〇5b is rounded. That is, as described above, since the point shape of the laser light emitted from the two-wavelength laser diode 102 is elliptical, by making it The short-axis direction is incident toward the oblique direction of the incident surface 105a, so that a dichroic prism is arranged on the incident side of the laser light of the composite optical member formed parallel to the incident surface and the outgoing surface 105b to make the laser light Incidentally, it is incident in the triangular prism in the same way, and the point shape of the laser light emitted from the exit surface 105b can be shaped into a circular shape. This scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) " '-41-(Please read the first Note for this page, please fill in this page) Order 591631 A7 B7 V. Description of the invention (soil (please read the notes on the back before filling this page) Inclination angle of the incident surface 1 0 5 a relative to the exit surface 1 〇5 b, When the beam expansion ratio is m and the refractive index of the resin material constituting the composite optical member 105 is η, it can be obtained by the following formula: Θ = sin_1 {(m2—l) / (n2m2—1)} From this formula, As an example, when m = 2.5 and η = 1 · 5, 0 = 39.3 〇 As shown in FIG. 21, the housing 106 of the composite optical unit 101 of this example is relative to the housing of the composite optical component 105. The chamber 106a of the two-wavelength laser diode 102 is arranged obliquely, and the cap portion 102e of the two-wavelength laser diode 102 is inserted into the accommodating chamber i06a. By embedding the base portion 102a of the two-wavelength laser diode 102, the laser light emitted from the two-wavelength laser diode 102 can be made incident on the incident surface 10 of the composite optical member 105. 5 a, make the incident at the required angle of incidence to obtain the desired beam shaping effect. The other parts are the same as the composite optical unit 101 and the composite optical member 105 according to the third embodiment. Therefore, the corresponding parts are designated by the same reference numerals and their descriptions are omitted. The composite optical unit 101 and the composite optical member 105 of this example are printed by an employee consumer cooperative of the Ministry of Economic Affairs and the Intelligent Finance Bureau as a light beam except that the composite optical unit 101 and the composite optical member 105 according to the third embodiment have the same effects. The shaping member inclines the incident surface 105a of the composite optical member 105 with respect to the incident direction of the laser light emitted from the two-wavelength laser diode 102. Therefore, it is easy to design and manufacture, and it is possible to easily manufacture beam shaping with high accuracy. Functional composite optical component 105 ° This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) -42- 591631 A7 ____ _ _B7 V. Description of the invention (In addition, in the above-mentioned embodiment, different wavelengths are used. The two light sources 1 0 3 a, 1 0 3 b, and the two-wavelength laser diode 10 2 are used as the light-emitting members, but a light-emitting member including only one light source may be used, or three light-emitting members having different wavelengths may be used. [Light-emitting member of the above light source.] [Effects of the Invention] As described above, the composite optical unit of the present invention is integrally provided in a housing. The light emitting member and the beam shaping member can reduce the waste of laser power irradiated onto the optical disc, and can be suitable for an optical pickup of an optical disc device such as a DVD device that requires a large laser power. Provided between the inner surface and the beam shaping member: a first restriction device for limiting an inclination angle of the beam shaping member with respect to an optical axis of laser light emitted from the light emitting member; and a restriction device for limiting the beam shaping member with respect to the light emitting member The second restricting device for the rotation direction position of the optical axis of the emitted laser light can not only press the beam shaping member into the housing, but also automatically adjust the posture of the beam shaping member to the optical axis of the laser light. When the beam-shaping member is installed in the housing, a special jig for position adjustment is not required, and therefore, the assembly of the composite optical unit including the beam-shaping member can be easily performed. Moreover, the composite optical unit of the present invention is used for beam shaping. Forming a beam shaping portion and a flange portion protruding from the beam shaping portion in the member, and forming A stepped portion that contacts the end surface of the flange portion and a restriction groove that is inserted into the restriction protruding portion are formed on the inner surface of the housing on the restricted protruding portion of the flange. The paper size that constitutes the above first limit applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page)

、1T 線 經濟部智慧財產局g(工消費合作社印製 -43- 591631 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（么 制裝置，同時，具有上述限制溝和上述限制突出部來構成 上述第二限制裝置，由此，不會使作用在外殼與光束整形 構件之間的裝配力作用到光束整形部上，而能夠防止光束 整形部的變形和變位，因此，能夠提高包括光束整形構件 的複合光學單元的光學特性。 而且，本發明的複合光學單元，作爲光束整形構件， 使用在光束整形部中形成圓柱形透鏡的，同軸地配置該圓 柱形透鏡的中心軸和從發光構件所射出的雷射光的光軸， 相對於圓柱形透鏡的透鏡面垂直地射入上述雷射光，在圓 柱形透鏡的中心軸方向上射出被光束整形的雷射光，由此 ，就能不必增加外殼的徑向尺寸，而在外殼內設置光束整 形構件，能夠緊湊地構成包括光束整形構件的複合光學單 元。 而且，本發明的複合光學單元，作爲光束整形構件， 使用在光束整形部中形成三角棱鏡的，相對於該三角棱鏡 的入射面，傾斜地配置從發光構件所射出的雷射光的光軸 ，相對於三角棱鏡的入射面傾斜地射入雷射光，在外殼的 中心軸方向上射出被光束整形的雷射光，由此，能夠使外 殼的發光構件安裝部相對於外殼的光束整形構件安裝部和 複合光學構件安裝部傾斜，而能夠簡化發光構件相對於發 光構件安裝部的安裝。 而且，本發明的複合光學單元，在構成光束整形構件 的凸緣部的外周面上，等間隔地設置壓接在外殼的內表面 上的至少三個固定用突起，由此，能夠通過壓入光束整形 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 批衣^|^1T^— (請先閱讀背面之注意事項再填寫本頁) -44- 591631 A7 --------B7_ 五、發明説明（上 構件而固定到外殼上，就不需要粘接等其他的固定措施， 因此’能夠簡化包括光束整形構件的複合光學單元的裝配 0 而且’本發明的複合光學單元，在外殼內一體地設置 發光構件和光束整形構件，因此，能夠減少照射到光碟上 的雷射功率的浪費，能夠適合於例如DVD裝置等的需要較 大的雷射功率的光碟裝置的光拾取器。而且，使光束整形 裝置與從發光構件所射出的雷射光的入射面、從發光構件 所射出的雷射光的出射面、入射來自光碟的返回光的返回 光入射面、把來自光碟的返回光傳導到感光構件上的反射 面一體地形成，由此，不需要這些部分的相互調整，能夠 謀求複合光學單元的小型化和裝配的簡易化。 (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 ， 使的且學 ，射，合 入 置，同並光 置雷計複 的 裝時不，合 裝的設的 件 形同面計複 形出和能 構 整，射設的 整射造功 學 束面入和能 束所製形 光 光凹述造功 光件行整 合 爲的上製形 爲構進束 複 作形與行整 作光地光 在 ， 柱率進束 ，發易的 ， 元圓曲地光 元從容度 元 單爲爲易的 單於夠精 單 學成成容度 學對能高 學 光形形夠精 光相，有 光 合面面能高 合面此具 合 複射射，有 複射由造 複 的入出此具 的入，製 的 明的的由造 明的斜地 明 發件件，製 發件傾易 發 本構構面地 本構向容 本 ， 學學凸易 ，學方夠。， 且光光的容 且光射能件且 而合合形夠。而合入，構而 複複柱能件 複的且學 使該圓，構 使光並光 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -45- 591631 A7 B7 i、發明説明（么 射面上，設置把從發光構件所射出的雷射光分成多個光束 的光衍射裝置，由此，能夠適合於裝入CD來進行資訊的 重放的光碟裝置。 【圖面說明】 第1圖爲表示第一實施例所涉及的光拾取裝置100的示 意圖。 第2圖爲第一實施例所涉及的兩波長雷射二極體102的 部分斷面的斜視圖。 第3圖爲第一實施例所涉及的複合光學構件1 〇5的正視 圖。 第4圖爲第3圖的左側面圖。 第5圖爲第3圖的右側面圖。 第6圖爲從第3圖中的方向6起所看到的圖。 第7圖爲第一實施例所涉及的光束整形構件1 〇9的平面 圖。 第8圖爲沿第7圖的8 - 8線的斷面圖； 第9圖爲第一實施例所涉及的外殻106的平面圖； 第10圖爲第9圖的10 — 10斷面圖。 第11圖爲第9圖的左側面圖。 第1 2圖爲第9圖的右側面圖。 第1 3圖爲從第10圖中的方向1 3起所到看的圖。 第14圖爲沿第1圖中的1 4 一 1 4的局部斷面圖。 第1 5圖爲第一實施例所涉及的複合光學構件1 0 5的功 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） --------— II (請先閱讀背面之注意事項再填寫本頁) 訂 線 經濟部智慧財產局員工消費合作社印製 -46- 591631 A7 B7 五、發明説明（么 能示意圖。 第16圖爲第二實施例所涉及的複合光學單元的局部斷 (請先閲讀背面之注意事項再填寫本頁) 面圖。 第17圖爲在第二實施例所涉及的複合光學單元中包括 的光束整形構件109的斷面圖。 第18圖爲表示第三實施例所涉及的光拾取裝置1〇〇的 示意圖。 第19圖爲第三實施例所涉及的複合光學構件1〇5的正 視圖。 第20圖爲第三實施例所涉及的複合光學構件1〇5的功 能示意圖。 第21圖爲第四實施例所涉及的複合光學單元的局部斷 面圖。 第22圖爲現有的光學單元50的局部斷面圖。 第23圖爲現有的光學單元50的局部分解透視圖。 【圖號說明】 經濟部智慧財產局員工消費合作社印製 100 光拾取裝置 101 複合光學單元 102 兩波長雷射二極體 103a 、103b 光源 104 感光構件 104a 感光元件 105 複合光學構件 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -47- 591631 A7 B7 經濟部智慧財產局工消費合作社印製 五、發明説明（4 105a 入射面 105b 出射面 1 0 5 d 反射面 1 05f 第一衍射光柵 105g 第二衍射光柵 105h 三束生成用衍射光柵 105Γ圓柱面（限制面） 105L突出部 105p 返回光出射面 105s 空間部 105m 位置限制突出部 106 外殼 106c 收納室 1 0 6 c ’頂觸面 106d 限制溝 106d’導向溝 106f 開口部 1 06j 第一限制接受部（限制接受面） 106k 第二限制接受部（限制接受面） 106m 臺階部 109 光束整形構件 109a 光束整形部 109b 凸緣部 109c 限制突出部 (請先閱讀背面之注意事項再填寫本頁) 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 48- 591631 五、發明説明（ 109d 200 300 400 500 A7 B7 ie 固定用突起 物鏡 反射鏡 准直透鏡 載架（拾取器本體）。 (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -49-1T line Intellectual Property Bureau of the Ministry of Economics (printed by the Industrial and Consumer Cooperatives-43- 591631 A7 B7 Printed by the Employees ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs The second restricting device is configured to prevent the deformation and displacement of the beam shaping section from being caused by the assembly force acting between the housing and the beam shaping member not being applied to the beam shaping section. Optical characteristics of a composite optical unit including a beam-shaping member. Further, as the beam-shaping member, the composite optical unit of the present invention uses a cylindrical lens formed in the beam-shaping section, and the central axis of the cylindrical lens and the The optical axis of the laser light emitted from the light-emitting member is perpendicular to the lens surface of the cylindrical lens, and the laser beam is shaped by the beam in the direction of the central axis of the cylindrical lens. Increasing the radial size of the casing, and the beam shaping member is provided in the casing, which can be compactly constituted including the beam shaping The composite optical unit of the component. In the composite optical unit of the present invention, as the beam shaping member, a triangular prism formed in the beam shaping section is used, and the laser light emitted from the light emitting member is arranged obliquely with respect to the incident surface of the triangular prism. The optical axis of the laser beam enters the laser light obliquely with respect to the incident surface of the triangular prism, and the laser beam shaped by the light beam is emitted in the direction of the central axis of the housing. Thus, the light-emitting member mounting portion of the housing can be made relative to the beam shaping member of the housing. The mounting portion and the composite optical member mounting portion are inclined, thereby simplifying the mounting of the light-emitting member to the light-emitting member mounting portion. Furthermore, the composite optical unit of the present invention is arranged at regular intervals on the outer peripheral surface of the flange portion constituting the beam shaping member. At least three fixing protrusions crimped to the inner surface of the casing are provided, so that the paper can be shaped by pressing the beam. The paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm). Batch of clothes ^ | ^ 1T ^ — (Please read the precautions on the back before filling this page) -44- 591631 A7 -------- B7_ V. Description of the Invention (The upper member is fixed to the housing, and other fixing measures such as bonding are not required. Therefore, the assembly of the composite optical unit including the beam shaping member can be simplified. Moreover, the composite optical unit of the present invention is integrally provided in the housing. The light emitting member and the beam shaping member can reduce the waste of laser power irradiated onto the optical disc, and can be suitable for an optical pickup of an optical disc device such as a DVD device that requires a large laser power. Moreover, the beam shaping can be performed. The device and the incident surface of the laser light emitted from the light-emitting member, the exit surface of the laser light emitted from the light-emitting member, the return light incident surface of the return light incident from the optical disc, and the device that transmits the return light from the optical disc to the photosensitive member Since the reflecting surface is formed integrally, there is no need for mutual adjustment of these parts, and miniaturization of the composite optical unit and simplification of assembly can be achieved. (Please read the precautions on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. The shape of the design is the same as the shape of the surface, and it can be shaped, and the whole shot of the beam is inserted into the beam and the beam is made by the beam. The beam complex shape and the whole line are light, and the column enters the beam, and the light is easy. The shape is good enough for the light phase. There is a light-receiving surface and a high-resonance surface. This is a complex shot. There is a complex shot. The sender is easy to send, and the facet is faceted to the face. Rongben is easy to learn. Moreover, the content of light and the light-emitting energy element are adequately shaped. And the combination, the structure and the complex column can be complex and learn to make the circle, and the structure of the paper can be applied to the Chinese National Standard (CNS) A4 specification (210X 297 mm) -45- 591631 A7 B7 i, [Explanation of the Invention] A light diffractive device that divides laser light emitted from a light emitting member into a plurality of light beams is provided on the emitting surface, and therefore, it is suitable for an optical disc device that is loaded with a CD to reproduce information. FIG. 1 is a schematic diagram showing an optical pickup device 100 according to the first embodiment. FIG. 2 is a perspective view of a partial cross-section of the two-wavelength laser diode 102 according to the first embodiment. FIG. 3 FIG. 4 is a front view of the composite optical member 105 according to the first embodiment. FIG. 4 is a left side view of FIG. 3. FIG. 5 is a right side view of FIG. 3. FIG. 6 is a view from FIG. 3. A view seen from direction 6 in the middle. Fig. 7 is a plan view of the beam shaping member 1 09 according to the first embodiment. Fig. 8 is a sectional view taken along line 8-8 of Fig. 7; Fig. 9 is a plan view of the housing 106 according to the first embodiment; Fig. 10 is a cross-sectional view taken along the line 10-10 in Fig. 9; Figure 1 is the left side view of Figure 9. Figure 12 is the right side view of Figure 9. Figure 13 is the view seen from direction 13 in Figure 10. Figure 14 is along the Partial cross-sections from 1 to 4 in Fig. 1. Fig. 15 is a workbook paper size of the composite optical component 1 0 5 according to the first embodiment. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297). Mm) --------— II (Please read the notes on the back before filling this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-46- 591631 A7 B7 V. Description of the invention (? Schematic diagram. Figure 16 is a partial view of the composite optical unit according to the second embodiment (please read the precautions on the back before filling out this page). Figure 17 is the composite optics according to the second embodiment. A cross-sectional view of a beam shaping member 109 included in the unit. FIG. 18 is a schematic diagram showing an optical pickup device 100 according to the third embodiment. FIG. 19 is a composite optical member 1 according to the third embodiment. 5 is a front view. FIG. 20 is a functional schematic diagram of a composite optical component 105 according to the third embodiment. Fig. 21 is a partial cross-sectional view of a composite optical unit according to a fourth embodiment. Fig. 22 is a partial cross-sectional view of a conventional optical unit 50. Fig. 23 is a partially exploded perspective view of a conventional optical unit 50. [Illustration of drawing number] Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 100 Optical pickup device 101 Composite optical unit 102 Two-wavelength laser diode 103a, 103b Light source 104 Photosensitive member 104a Photosensitive element 105 Composite optical member This paper is applicable to this paper China National Standard (CNS) A4 specification (210X297 mm) -47- 591631 A7 B7 Printed by the Industrial and Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (4 105a incident surface 105b exit surface 1 0 5 d reflective surface 1 05f section One diffraction grating 105g Second diffraction grating 105h Three-beam generation diffraction grating 105Γ Cylindrical surface (restricted surface) 105L projection 105p Return light exit surface 105s Space portion 105m Position-restricted projection 106 Case 106c Storage room 1 0 6 c 'Top-touch Surface 106d restriction groove 106d 'guide groove 106f opening 1 06j first restriction receiving portion (restriction receiving surface) 106k second restriction connection Section (restricted receiving surface) 106m stepped section 109 beam shaping member 109a beam shaping section 109b flange section 109c restricted protruding section (please read the precautions on the back first and then fill out this page) The paper size of this edition applies to the Chinese National Standard (CNS) A4 Specifications (210X297 mm) 48- 591631 V. Description of the invention (109d 200 300 400 500 A7 B7 ie Fixed collimating lens carrier (projector body) for protruding objective lens reflector. (Please read the precautions on the back before filling out this page) Order Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -49-

Claims (1)

v f ； A8 _幻 i 六、申請專利範圍 第901 14097號專利申請案 中文申請專利範圍修正本 (請先閲讀背面之注意事項再填寫本頁) 民國92年11月7 日修正 1·一種複合光學單元，其特徵在於，在外殼內設置：複 合光學構件、發光構件、感光構件、用於把從上述發光構 件所射出的雷射光的點形.狀整形爲圓形的光束整形裝置， 上述複合光學構件，至少是將從上述發光構件所射出的雷 射光的入射面；使射入上述入射面的雷射光向著光碟射出 的出射面；使來自上述光碟的·返回光入射的返回光入射面 ;形成在上述返回光入射面上並且使上述返回光向預定方 向衍射的衍射裝置；和把由上述衍射裝置所衍射的返回光 傳導到上述感光構件的反射面一體地設置。 經濟部智慧財產局員工消費合作社印製 2·如申請專利範圍第1項所述的複合光學單元，其中， 上述複合光學構件與上述光束整形裝置是單獨地被配置， 上述光束整形裝置由光束整形構件所組成，在上述外殻的 內表面與上述光束整形構件之間設置：用於限制上述光束 整形構件相對於從上述發光構件所射出的雷射光的光軸的 傾斜角度的第一限制裝置；用於限制上述光束整形構件相 對於從上述發光構件所射出的雷射光的光軸的旋轉方向位 置的第二限制裝置。 3 ·如申請專利範圍第2項所述的複合光學單元，其中， 在上.述光束整形構件中形成光束整形部及從其光束整形部 伸出的凸緣部和形成在該凸緣部上的限制突出部，在上述 外殼的內表面上形成接觸上述凸緣部的端面的臺階部和插 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） ] 經濟部智慧財產局員工消費合作社印製 591631 A8 B8 C8 ____ D8 ^、申請專利範圍 入上述限制突出部的限制溝，在以上述臺階部和上述凸緣 部的端面來構成上述第一限制裝置的同時，以上述限制溝 和上述限制突出部來構成上述第二限制裝置。 4.如申請專利範圍第3項所述的複合光學單元，其中， 作爲上述光束整形構件，使用在上述光束整形部中形成圓 柱形透鏡的，同軸地配置.該圓柱形透鏡的中心軸和從上述 發光構件所射出的雷射光的光軸，相對於上述圓柱形透鏡 的透鏡面垂直地射入上述雷射光，在上述圓柱形透鏡的中 心軸方向上射出被光束整形的雷射光。 . 5 ·如申請專利範圍第3項所述的複合光學單元，其中， 作爲上述光束整形構件，是使用在上述光束整形部中形成 三角棱鏡者，相對於該三角棱鏡的入射面，傾斜地配置從 上述發光構件所射出的雷射光的光軸，相對於上述三角棱 鏡的入射面傾斜地射入上述雷射光，在上述外殻的中心軸 方向上射出被光束整形的雷射光。 6. 如申請專利範圍第3項所述的複合光學單元，其中， 在上述外殻的外周面上等間隔地設置壓焊在上述外殼的內 表面的至少3個固定用突起。 7. —種複合光學構件，如申請專利範圍第1項所述的 複合光學單元，其特徵在該複合光學構件上，一體地形成 上述光束整形裝置。 8. 如申請專利範圍第7項所述的複合光學構件，其中， 作爲上述光束整形裝置，在圓柱形的凹面上形成上述入射 面的同時，在與上述入射面的曲率不同的圓柱形的凸面上 (請先閱讀背面之注意事項再填寫本頁)vf ； A8 _Magic i VI. Application for Patent Scope No. 901 14097 Chinese Patent Application Amendment (please read the precautions on the back before filling this page) Amendment on November 7, 1992 1. A kind of composite optics The unit is characterized in that a composite optical component, a light-emitting component, a light-sensitive component, and a dot-shaped beam shaper for shaping the laser light emitted from the light-emitting component are provided in the housing. The member is at least an incident surface of laser light emitted from the light-emitting member; an exit surface that causes the laser light incident on the incident surface to face the optical disc; a return light incident surface that causes the return light from the optical disc to enter; A diffractive device on the returning light incident surface and diffracting the returning light in a predetermined direction; and a reflecting surface that transmits the returning light diffracted by the diffractive device to the photosensitive member integrally. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 2. The composite optical unit according to item 1 of the scope of patent application, wherein the composite optical component and the beam shaping device are configured separately, and the beam shaping device is shaped by a beam A first limiting device for limiting an inclination angle of the light beam shaping member with respect to an optical axis of the laser light emitted from the light emitting member, between the inner surface of the housing and the beam shaping member; A second restricting device for restricting a position of the beam-shaping member in a rotation direction with respect to an optical axis of the laser light emitted from the light-emitting member. 3. The composite optical unit according to item 2 of the scope of patent application, wherein the beam shaping member is formed with a beam shaping section and a flange section protruding from the beam shaping section, and is formed on the flange section. The limiting protrusions are formed on the inner surface of the housing to form a stepped portion that contacts the end surface of the flange portion and the paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210X 297 mm)] Staff of the Intellectual Property Bureau of the Ministry of Economy Printed by the Consumer Cooperative 591631 A8 B8 C8 ____ D8 ^ The scope of the patent application is included in the restriction groove of the restriction protrusion, while the first restriction device is constituted by the end surfaces of the stepped portion and the flange portion, and the restriction groove is used. The above-mentioned second restricting device is constituted by the restricting protruding portion. 4. The composite optical unit according to item 3 of the scope of the patent application, wherein, as the beam shaping member, a cylindrical lens formed in the beam shaping section is used and arranged coaxially. The central axis of the cylindrical lens and the The optical axis of the laser light emitted by the light-emitting member is perpendicularly incident on the laser light with respect to the lens surface of the cylindrical lens, and the laser light shaped by the light beam is emitted in the direction of the central axis of the cylindrical lens. 5 · The composite optical unit according to item 3 of the scope of patent application, wherein the beam shaping member is a member that forms a triangular prism in the beam shaping section, and is arranged obliquely from the incident surface of the triangular prism. The optical axis of the laser light emitted from the light emitting member is incident on the laser light obliquely with respect to the incident surface of the triangular prism, and the laser light shaped by the light beam is emitted in the direction of the central axis of the housing. 6. The composite optical unit according to item 3 of the scope of patent application, wherein at least three fixing protrusions are pressure-welded to the inner surface of the housing at equal intervals on the outer peripheral surface of the housing. 7. A composite optical component, such as the composite optical unit described in item 1 of the patent application scope, characterized in that the composite optical component integrally forms the above-mentioned beam shaping device. 8. The composite optical member according to item 7 of the scope of patent application, wherein, as the beam shaping device, the incident surface is formed on a cylindrical concave surface, and a cylindrical convex surface having a curvature different from that of the incident surface is formed. Up (Please read the notes on the back before filling this page) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -2 591631 A8 B8 C8 _ D8 申請專利範圍 形成上述出射面。 9 ·如申§靑專利範圍第7項所述的複合光學構件，其中， 作爲上述光束整形裝置，使上述入射面相對於上述發光構 件所射出的雷射光的入射方向傾斜。 1 0 ·如申請專利範圍第7項所述的複合光學構件，其中， 在上述入射面上設有將上.述發光構件所射出的雷射光分割 爲多個光束的光衍射裝置。 (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 -3- 本紙張尺度適用中國國家梯準（CNS ) A4規格（210X：297公釐）This paper size is in accordance with Chinese National Standard (CNS) A4 specification (210X297 mm) -2 591631 A8 B8 C8 _ D8 Patent application scope The above-mentioned exit surface is formed. 9. The composite optical component according to item 7 of the patent application, wherein as the beam shaping device, the incident surface is inclined with respect to an incident direction of laser light emitted from the light emitting component. 1 0. The composite optical member according to item 7 of the patent application scope, wherein a light diffracting device for dividing the laser light emitted from the light-emitting member into a plurality of light beams is provided on the incident surface. (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -3- This paper size applies to China National Standard (CNS) A4 (210X: 297 mm)
TW090114097A 2000-07-04 2001-06-12 Composite optical component and composite optical unit thereof TW591631B (en)

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KR100971932B1 (en) * 2008-04-22 2010-07-27 이송애 Barber's pole
CN114300931A (en) * 2021-12-06 2022-04-08 武汉锐科光纤激光技术股份有限公司 Heat radiator for laser chip

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* Cited by examiner, † Cited by third party
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US7924687B2 (en) 2005-03-18 2011-04-12 Hon Hai Precision Industry Co., Ltd. Optical system for collimating elliptical light beam and optical device using the same

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