.1303322 九、發明說明： 【發明所屬之技術領域】 本發明係提供一種瞄準器光學系統，尤指— 射面與非球面塑膠光學透鏡之瞄準器光學系。八> 【先前技術】 ” 典型瞄準器光學系統係由複數個玻璃透鏡組人 在傳統技術中利用複數個玻璃透鏡組合而成的 糸統往往造成重量的增加，體積大小的增加以 ° : 的增加。冑知技術往往以減少玻璃透鏡數目來 = 述重量增加’體積大小增加以及生產成本增加的問題。 然而，玻璃透鏡數目的減少以及利用塑膠透鏡往往 以達到滿意的像差修正。特別是色像差之修正僅僅用 玻璃透鏡數目的減少或是利用塑膠透鏡是難以達到。一 而言，不同材質的透鏡具有不同的色散係數，需要 = 同材質的透鏡組合而成的透鏡組以達到色像差之修正。 者，習知僅有少數塑膠種類可以做為透鏡使用，而其效果 可以令人滿意，因此無法任意選用具有不同色散係數 >之塑 膠透鏡材質做為色像差之修正。所以傳統技術中光學系統 之透鏡元件難以全都利用塑膠透鏡來實現。 、 ^再者，在典型的瞄準器光學系統因為環境條件因素， 譬如溫度或是濕度而使得該瞄準器光學系統的成像與解像 效果、欠差。因為瞄準器須要在較嚴格的環境下使用，因此 目w市面上的瞄準器一直以來均用玻璃透鏡，避免温度或 溼度造成瞄準器解像變差，或者透鏡的損害。第i圖為習 知瞄準器光學系統剖面與光學路徑示意圖。請參考第工 圖，習知瞄準器光學系統主要由三部分所組成，第一部分 為目鏡組（eyepiece lens group) 110，第二部分為正立組 (erector lens group) ：[ 2〇，同時扮演變倍的角色，第三部 分為物鏡組（objective lens group) 130。該目鏡組11〇在 1303322 習知技術中係包含三片玻璃透鏡， (C〇nvex〇-convex lens )ln、—雔 边蜆 lens) 112以及一雙凹透产f又凸透鏡（c〇nvexo_convex 又凹透鏡（c〇ncav〇-concave lens) n 該正立組120包含五片玻璃透鏡，其中該五片玻璃透鏡從 -議依序為一第一透鏡、一第二透鏡、從 :弟四透鏡以及-第五透鏡。該第—透鏡係、為—半月^正 透鏡H透鏡之中凸部分朝向—接 亦為-半月型正透鏡，該第二透鏡之凹部分朝向第：3 Π;透鏡係為—雙凸透鏡。該第四透鏡係為-雙凸 透鏡。及弟五透鏡係為—半月型正透鏡，㈣五透鏡 凸部分朝向-接目彻j。該正立組120係做為一 =放大功能與提供較⑽定之光學品f。該物餘130 = 二片ί璃透鏡°該物鏡組13G之構成從—物體側依序為 為一—第二透鏡m三透鏡。該第一透鏡係 又凸透鏡。該第二透鏡係為一半月型正透鏡，該第二 透鏡之^部朝向—接目㈣。該第三透鏡係為-雙凸透鏡。 士泊所述典型的瞄準器光學系統係由複數個玻璃透 :所組合而成’造成重量增加’體積大小增加以及生產成 ^增加。因必匕習知晦準器光學系統係利用常用膠合透鏡來 几成肩色差之目的，但卻造成了該瞄準器光學系統重量的 增加外，也增加了生產的成本。 職是之故，本發明鑒於習知技術之缺失，乃思及改良 上、月之思念’ |明出本案《『具有繞射面與非球面塑膠光 :透鏡之瞄準器光學系統』以減少該瞄準器光學系統之重 里契成本，並維持相同之光學品質。 【發明内容】 ° ' σ。本發明之主要目的係提供一種瞄準器光學系統，該瞄 2為光學系統利用一塑膠光學透鏡，該塑膠光學透鏡具有 —非球面以及一繞射面，使得該瞄準器光學系統的重量得 l3〇3322 以減輕又不損及其光學性能。 本發明之另一目的将蔣 一 準器光學系統利用兩片透：瞄準器光學系統’該瞄 統的目鏡組包含一雙凸透目鏡組，其中該傳 係由—雙凸透鏡與— 膠3透鏡，該膠合透鏡 -為玻璃透鏡，二為塑脒：m。本發明之目鏡組 球面以及-繞射面透鏡。#中該塑膠透鏡具有4 準'i月之$目的係提供-種瞄準器光學系统，嗲瞄 益光予糸統利用兩片透鏡取代 以诘； 製造考量上Μ吏用射同之光學品質，其中 里上飼射出成型，可大量生產，塑 璃來得低，且無須使用到塑膠黏合玻璃的繁項 因而’為了達到以上目的，本發明提供，其包：： 了解 本案得藉由以下列圖示與詳細說明，俾得一更深入之 【實施方式】 明參閱弟2圖，係為本案較佳實施例之瞄準器光學系 統剖面與光學路徑示意圖。該瞄準器光學系統主要由三部 刀所、、且成弟口Ρ为為目鏡組（eyepiece lens group ) 2 1 0， 第二部分為正立組（erector lens group ) 220，同時扮演變 "ί口的角色’弟二部分為物鏡組（〇bjecHve iens gr0Up ) 230。 该目鏡組Π 0在習知技術中係包含三片玻璃透鏡，一雙凸 透鏡（convexo-convex lens ) 111 、一雙凸透鏡 (convexo-convex lens ) 112 以及一雙凹透鏡 (concavo-concave lens ) 113,在本發明中以兩片透鏡來取 代。如第2圖所示，該目鏡組210包含兩片透鏡，一為玻 璃透鏡211、一為塑膠透鏡212。該塑膠透鏡212具有一非 球面（aspherical surface ) R1 以及一繞射面（diffractive !3〇3322 surface ) R2。習知技術中，該瞄準器光學系統原本要利用 許多具有不同色散係數之透鏡來達到矯正色像差 (chromatic aberration )之目的，然而本發明中之該瞄準器 光學系統利用該塑膠透鏡212之繞射面（ surface ) R2即可橋正色差，使習知技術中原本須要多片不 同色散係數的鏡片矯正的色差，在本發明中利用該塑膠透 鏡212之繞射面R2即能穫得良好的矯正。從接目側到物體 側方向而言，該塑膠透鏡212依序為該繞射面R2以及該 球面R1。 / 再者，該繞射面R2以及該非球面R1分別製造在該塑 膠透鏡212之兩側以減低製程上的公差，提高光學品質。 另外，該透鏡212製造考量上，使用射出成型，可大量生 產，塑膠成本又較玻璃來得低，可以生產出成本較低之目 鏡組。因此，由該雙凸透鏡112以及該雙凹透鏡113所組 合而成之該雙膠合透鏡可以被該塑膠透鏡212所取代，無 須使用到塑膠黏合玻璃的程序。事實上，塑膠黏合玻璃的、 程序是一個非常繁瑣的程序。總結來說，本發明提供之 ，膠透鏡2i2可以使用射出成型，大量生i，簡化生產= ，亚卩牛低成本。又考慮到瞄準器須經常處於嚴厲的環境 了，=以該玻璃透鏡211放置於外側，避免該塑膠透鏡212 f氣直接的接觸，造成不必要的損壞，並且 透鏡2收提供目鏡主要的聚焦力（p〇WER)。 趙 ，正立組220與該物鏡組23〇與第i圖所示習知正立 二二與物鏡、组130之功能相同。根據本案較佳實施例， = 以及該非球面R1之位置係配置從接目側到物 射面R2 ’在料為該非球面ri。亦即該繞 =在前，該非球面R1在後。然而，該繞射面心 R2 1及二二T之位置可以相互對調。換言之，該繞射面 Z以及ό亥非球面R1之付番总 位置係配置從接目側到物體側係為 l3〇3322 二非球面R1，在依序為該繞射面R2。亦 則，該繞射面R2在後。 邊非球面R1在 在本發明中，為了使該目鏡組210的聚隹由+ 破璃透鏡211上，丨細<()5,以f /來焦力集中在該 〜距，fp為目鏡中的塑膠鏡片焦距。 喝兄片 大，〇W表該塑膠透鏡焦力越 易又/皿度衫響，並且製程上公差越 響光學品質及良率。 別進而影 ^者:在各不同倍率下’最大視場（fieM喜_ 士線入射該繞射面R2的角度θ大於2。，小於1〇。 角度Θ為各不同倍率下，最大 ，、中 R2 ΛΑ ^ ^丄 取穴現％的主先線入射該繞射面 小的凡角度。當該最大視場角低於下限日寺，最大視場角太 現，2塑=上限時，會造成各波長雜散光的出 將厭重衫響使用者的所看到的景像，及視覺效果。 在本發明中，非球面方程式以及係數表示如下： T + Ah4+Bh6 + Ch8+JDh10 ch2 l + [l-(k + \)c2h2} 該非球面R1之非球面方程式之係數係為c=i/5〇5㈣ ^ ； = ·5·47244δΕ·°^ B = 6.805825E-10, C = -2.1 66406Ε-Π △及D=〇。其中c表示非球面頂點的曲率，1^表示圓錐常數， A、B、C、D表示第四次至第十次的非球面係數。 下 该繞射面R2之繞射面方程式以及係數表示如 Φ(Λ) = ~ [Kxh2 + K2h4 +K3h6+ K4hB + Ksh10} 1303322 該繞射面R2之繞射面方程式之係數係為 H.04961 14, Κ2 = 5·060945Ε-3, K3 = 〇, K4=〇 以及 K5 = 〇。其 中λο為光學設計之中心波長，Κι、Κ2、&、、Κ5表示第 二次至第十次的繞射係數。 綜合上述，本發明提供一種瞄準器光學系統，利用_ 塑膠光學透鏡具有一非球面以及一繞射面，取代傳統的目 鏡組以減低該瞄準器光學系統之重量與成本並維持相同之 光學品質，其中製造考量上，使用射出成型，可大量生產， 塑膠成本又較玻璃來得低，且無須使用到塑膠 繁瑣程序。 < α ^ 本案得由熟知此技術之人士任施匠思而為諸般修飾， 然皆不脫如附申請專利範圍所欲保護者。 " 【圖式簡單說明】 :1圖為習知瞄準器光學系統剖面與光學路徑示音圖。 弟2圖係為本案較佳實施例之厂 光學路徑示意圖。 早為先學糸統剖面與 【主要元件符號說明】 110目鏡組 12 0正立組 1 3 0物鏡組 2 1 0目鏡組 211玻璃透鏡 2 12為塑膠透鏡 220正立組 2 3 0物鏡組 R1非球面 R2繞射面 10.1303322 IX. Description of the Invention: [Technical Field of the Invention] The present invention provides a sight optical system, in particular, a sight optical system of a face and an aspheric plastic optical lens. VIII> [Prior Art] ” A typical sight optical system is a combination of a plurality of glass lenses in a conventional glass lens. The cassava combined with a plurality of glass lenses often causes an increase in weight, and the volume increases by °: The problem is that the technique of reducing the number of glass lenses is often reduced by the increase in volume and the increase in production cost. However, the reduction in the number of glass lenses and the use of plastic lenses tend to achieve satisfactory aberration correction. Correction of aberrations is only possible with the reduction of the number of glass lenses or the use of plastic lenses. In other words, lenses of different materials have different dispersion coefficients, and a lens group of lenses of the same material is required to achieve a color image. Correction of the difference. It is known that only a few types of plastic can be used as lenses, and the effect is satisfactory, so the plastic lens material with different dispersion coefficient can not be arbitrarily selected as the correction of chromatic aberration. In the conventional art, it is difficult for the lens elements of the optical system to be fully realized by a plastic lens. Furthermore, in a typical sight optical system, the imaging and decoding effects of the sight optical system are poor due to environmental conditions such as temperature or humidity. Because the sights need to be used in a stricter environment, Therefore, the sights on the market have always used glass lenses to avoid temperature or humidity causing distortion of the sight, or lens damage. Figure i is a schematic diagram of the optical system profile and optical path of the conventional sight. In the first drawing, the conventional sight optical system is mainly composed of three parts, the first part is the eyepiece lens group 110, and the second part is the erector lens group: [2〇, which simultaneously plays the zoom The third part is the objective lens group 130. The eyepiece group 11〇 contains three glass lenses in the technique of 1303322, (C〇nvex〇-convex lens) ln, 雔 雔 蚬 lens 112 and a pair of concave transmissive f-convex lenses (c〇nvexo_convex concave lens (c〇ncav〇-concave lens) n the erect group 120 comprises five glass lenses, wherein the five glasses The lens is sequentially a first lens, a second lens, a fourth lens, and a fifth lens. The first lens system is a half moon and a positive lens. a semi-monthly positive lens, the concave portion of the second lens faces the :3 Π; the lens is a lenticular lens. The fourth lens is a lenticular lens, and the fifth lens system is a semilunar positive lens, (4) The convex portion of the five lens is oriented toward the eye. The erected group 120 is used as a function of amplifying and providing an optical product f of (10). The remainder 130 = two lenses. The composition of the objective lens group 13G is - The object side is sequentially one - the second lens m three lens. The first lens system is a convex lens. The second lens is a half-moon positive lens, and the second lens is oriented toward the eye (four). The third lens is a lenticular lens. The typical sight optical system described by Shibo is composed of a plurality of glass filters: combined to cause 'weight increase' volume increase and production increase. It is necessary to use the conventional cemented lens to achieve the purpose of shoulder-to-shoulder chromatic aberration, but it also increases the weight of the optical system of the sight, and also increases the cost of production. For the sake of the job, the present invention is based on the lack of the prior art, and is considered to improve the previous and the moon's thoughts. | | The case "The optical surface with the diffractive surface and the aspheric plastic light: the lens of the sight" is reduced. The sight optical system is cost-effective and maintains the same optical quality. SUMMARY OF THE INVENTION ° ' σ. The main object of the present invention is to provide a sight optical system that utilizes a plastic optical lens having an aspherical surface and a diffractive surface for the optical system such that the optical system of the sight has a weight of 13 〇. 3322 to reduce and not damage its optical performance. Another object of the present invention is to use the two-piece perforator optics system of the gaiper optical system. The eyepiece group of the aiming system comprises a pair of convex-eyepiece groups, wherein the transmission is made of a lenticular lens and a glue lens. The cemented lens is a glass lens and the second is a plastic: m. The eyepiece group of the present invention is a spherical surface and a diffraction surface lens. #中中 The plastic lens has 4 quasi-i months of the purpose of providing a kind of sight optical system, 嗲 益 光 糸 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 利用 诘 诘 诘 诘 诘 诘 诘 诘 诘 诘 诘 诘 诘 诘 诘 诘Among them, the feeding and injection molding can be mass-produced, the plastic glass is low, and the plastic bonding glass is not required to be used. Therefore, in order to achieve the above object, the present invention provides a package:: And the detailed description, a more in-depth [Embodiment] See Figure 2, which is a schematic diagram of the optical system of the sight and optical path of the preferred embodiment of the present invention. The sight optical system is mainly composed of three knives, and the eyepiece lens group is 2 1 0, and the second part is the erector lens group 220. The role of the ' mouth 'part two is the objective lens group (〇bjecHve iens gr0Up) 230. The eyepiece assembly Π 0 includes three glass lenses, a lenticular lens (convexo-convex lens) 111, a convexo-convex lens 112, and a concavo-concave lens 113 in the prior art. In the present invention, it is replaced by two lenses. As shown in Fig. 2, the eyepiece set 210 includes two lenses, one being a glass lens 211 and the other being a plastic lens 212. The plastic lens 212 has an aspherical surface R1 and a diffractive !3〇3322 surface R2. In the prior art, the sight optical system originally uses a plurality of lenses having different dispersion coefficients to achieve the purpose of correcting chromatic aberration. However, in the present invention, the sight optical system utilizes the plastic lens 212. The surface R2 can bridge the chromatic aberration, so that the chromatic aberration corrected by the lens of a plurality of different chromatic dispersion coefficients is required in the prior art. In the present invention, the diffraction surface R2 of the plastic lens 212 can be used for good correction. . The plastic lens 212 is sequentially the diffraction surface R2 and the spherical surface R1 from the contact side to the object side direction. Further, the diffraction surface R2 and the aspheric surface R1 are respectively formed on both sides of the plastic lens 212 to reduce tolerances in the process and improve optical quality. In addition, the lens 212 can be manufactured in a large amount by injection molding, and the plastic cost is lower than that of the glass, so that a lower cost eyepiece group can be produced. Therefore, the double-glued lens composed of the lenticular lens 112 and the biconcave lens 113 can be replaced by the plastic lens 212 without using a plastic bonding glass. In fact, the process of plastic bonding glass is a very cumbersome procedure. In summary, the present invention provides that the glue lens 2i2 can be injection molded, mass production i, simplify production =, and the Yak cattle low cost. It is also considered that the sight should always be in a severe environment, and the glass lens 211 is placed on the outside to avoid direct contact of the plastic lens 212, causing unnecessary damage, and the lens 2 provides the main focusing force of the eyepiece. (p〇WER). Zhao, the erecting group 220 and the objective lens group 23 〇 and the eigen erected 222 shown in the figure i have the same functions as the objective lens and the group 130. According to a preferred embodiment of the present invention, = and the position of the aspheric surface R1 are arranged from the joint side to the object plane R2' as the aspheric surface ri. That is, the winding = in front, the aspheric surface R1 is behind. However, the positions of the diffractive facets R2 1 and 22 may be mutually adjusted. In other words, the total position of the diffractive surface Z and the aspherical surface R1 is set to be l3〇3322 aspherical surface R1 from the contact side to the object side, and in this order, the diffraction surface R2. Also, the diffraction surface R2 is at the rear. The side aspherical surface R1 is in the present invention, in order to make the convergence of the eyepiece group 210 from the + glass lens 211, thinner < () 5, f / focus is concentrated on the ~ distance, fp is the eyepiece The focal length of the plastic lens. Drinking a brother's film is big, 〇W, the plastic lens is more easy to focus on and the dish is louder, and the tolerance on the process is more optical quality and yield. Don't go to the shadow: the maximum field of view at different magnifications (the angle θ of the fieM _ 士士 incidence of the diffraction surface R2 is greater than 2., less than 1 〇. The angle Θ is the different magnification, the maximum, the middle R2 ΛΑ ^ ^ The main line of the % of the hole is incident on the small angle of the diffraction surface. When the maximum angle of view is lower than the lower limit of the temple, the maximum angle of view is too large, 2 plastic = upper limit, it will cause The out-of-wave light of each wavelength will be dissipated to the user's view and visual effect. In the present invention, the aspheric equation and the coefficient are expressed as follows: T + Ah4 + Bh6 + Ch8 + JDh10 ch2 l + [l-(k + \)c2h2} The coefficient of the aspheric equation of the aspheric surface R1 is c=i/5〇5(4)^ ; = ·5·47244δΕ·°^ B = 6.805825E-10, C = -2.1 66406Ε - Π △ and D = 〇, where c represents the curvature of the aspherical apex, 1^ represents the conic constant, and A, B, C, D represent the aspherical coefficients of the fourth to tenth times. The diffraction surface equation and the coefficient are expressed as Φ(Λ) = ~ [Kxh2 + K2h4 + K3h6 + K4hB + Ksh10} 1303322 The coefficient of the diffraction surface equation of the diffraction surface R2 is H.04961 14, Κ 2 = 5·060945Ε-3, K3 = 〇, K4=〇 and K5 = 〇, where λο is the center wavelength of the optical design, Κι, Κ2, &, Κ5 represents the second to tenth diffraction coefficients In summary, the present invention provides a sight optical system that utilizes an aspherical surface and a diffractive surface to replace the conventional eyepiece assembly to reduce the weight and cost of the optical system of the sight and maintain the same optical quality. In terms of manufacturing considerations, injection molding can be used for mass production, and the cost of plastic is lower than that of glass, and there is no need to use plastic cumbersome procedures. < α ^ This case has been modified by people who are familiar with this technology. However, it does not deviate from the scope of the patent application. [quote a brief description]: 1 is a schematic view of the optical system profile and optical path of the conventional sight. Brother 2 is the preferred implementation of this case. Example of the optical path of the factory. As early as the first syllabary profile and [main component symbol description] 110 eyepiece group 12 0 erected group 1 3 0 objective lens group 2 1 0 eyepiece group 211 glass lens 2 12 is plastic 220 erecting lens group 230 group R1 R2 diffraction aspheric surface 10