1290216 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光學測距裝置，特別是指一種可 減少内面反射的光學測距裝置。 【先前技術】 如圖1所示，習知一種具有測距功能的瞄準器包含一 本體1、一裝設於該本體1前端的接物鏡單元2、二裝設於 該本體1上的彈著補正單元3、一裝設於該本體丨内的光發 射單元4、一裝設於該本體1内的光接收單元5、一裝設於 該本體1内並鄰近於該光發射單元4的第一菱鏡組6、一裝 設於該本體1内並鄰近於該光接收單元5的第二菱鏡組7， 及一裝設該本體1前端並位於該接物鏡單元2之前的平面 鏡8。该接物鏡單元2具有一以球軸結構樞接於該本體i的 鏡筒201，及數裝設於該鏡氮2〇1内的鏡片2〇2.，該等彈著 補正單凡3可分別左、右調整風向瞄準偏差或上、下調整 彈道瞄準偏差（業界一般稱為W/E調整），在圖i中僅示出 其中個可凋整上、下瞄準偏差的彈著補正單元3，該彈著 補正單元3具有一與該鏡筒2〇1的一後端部抵接的調整件 3〇1，當使用者轉動該調整件3〇1時，該調整件可上、 下移動而推抵該_ 201㈣端部，該第一菱鏡組6具有 一反射面6〇卜及一半穿透反射面6〇2，該.第二菱鏡組^具 有-反射面701，該平面鏡8具有防水、氣密、防塵的作用 ，且’該平面鏡8的兩面均鑛設有多層高穿透性的抗反射 1290216 並被該反射面7 01反射， 藉此，當該光發射單元4投射出一光束4〇ι時，爷光 束經該反射面6〇1與該半穿透反射面6〇2反射，可穿過蜂 等鏡片搬與該平面鏡7，而朝外投射至—目標物（圖未示 )上，待該光束401被該目標物反射後，該光束彻可反 向穿透該平面鏡7、該等鏡片2Q2與該半穿透反射面6〇2, 而被該光接收單元5接收。如此 ’利用該光束401的發射、接收時間差，及該光束4〇ι的 光速作運算，即可完成測距的功能，巾，當使用者透過該BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an optical distance measuring device, and more particularly to an optical distance measuring device that reduces internal reflection. [Prior Art] As shown in FIG. 1 , a sight having a distance measuring function includes a body 1 , an objective lens unit 2 mounted on the front end of the body 1 , and 2 cartridges mounted on the body 1 . a correcting unit 3, a light emitting unit 4 mounted in the body, a light receiving unit 5 mounted in the body 1, and a first unit mounted in the body 1 adjacent to the light emitting unit 4 A prism group 6, a second prism group 7 mounted in the body 1 adjacent to the light receiving unit 5, and a plane mirror 8 provided with the front end of the body 1 and located before the objective lens unit 2. The objective lens unit 2 has a lens barrel 201 pivotally connected to the body i in a ball axis structure, and a plurality of lenses 2〇2 mounted in the mirror nitrogen 2〇1. Adjust the wind direction aiming deviation or the up and down adjustment of the ballistic aiming deviation respectively (the industry generally refers to W/E adjustment), and only one of the bullet correction units 3 that can withstand the upper and lower aiming deviations is shown in FIG. The elastic correction unit 3 has an adjusting member 3〇1 abutting against a rear end portion of the lens barrel 2〇1, and the adjusting member can move up and down when the user rotates the adjusting member 3〇1. And pushing the _ 201 (four) end portion, the first prism group 6 has a reflecting surface 6 及 and a half penetrating reflecting surface 6 〇 2, the second Mirror group 具有 has a reflecting surface 701, the plane mirror 8 It has the functions of waterproofing, airtightness and dustproof, and the two sides of the plane mirror 8 are provided with a plurality of layers of high-penetration anti-reflection 1290216 and are reflected by the reflecting surface 71, whereby the light-emitting unit 4 projects When a light beam is 4 〇, the beam is reflected by the reflecting surface 6〇1 and the semi-transmissive reflecting surface 6〇2, and can be moved to the plane through a lens such as a bee. 7, and projecting outward to the target (not shown), after the beam 401 is reflected by the target, the beam can be reversely penetrated through the plane mirror 7, the lens 2Q2 and the semi-transparent reflection The face is 6〇2 and is received by the light receiving unit 5. Thus, by using the emission and reception time difference of the light beam 401 and the light speed of the light beam 4〇, the function of ranging can be completed, and the user can pass the
本體1另-端的-接目鏡單元（圖未示）觀視時，即可完 成瞄準的功能。 雖然，此種目苗準器可達到測距及瞄準的目的，但是， 在實際使用、製造時，此種瞄準器卻具有以下的缺失： 一、雖然該平面鏡8上鍍設有多層高穿透性的抗反射 膜，但是，該平面鏡8實質上仍無法達到1〇〇%的穿透率， 口此 ^ 5亥光束401投射至該平面鏡§上時，該光束4〇 1 的σ卩伤反射光束402仍會被該平面鏡8反射，此時，由於 該平面鏡8是呈平面狀，且，該光束401的入射角與反射 角均是等於0度，因此，該反射光束402即會沿該光束401 的出射路徑反射至穿透該半穿透反射面602,然後再被該反 射面701反射至被該光接收單元5接收，因而導致該光接 收單元5在該光束401被目標物反射回來之前發生誤接收 的問題’如此，不僅會產生訊號的干擾，而造成發射、接 收時間差的誤算，更可能會使該瞄準器的測距能力降低或 消失，而嚴重影響測距的準確性。 Ί290216 二、 為了提昇該平面鏡8的穿透性，該平面鏡8上必 /頁鍵。又夕層回穿透性的抗反射膜，如此高規格的鑛膜需求 不僅日大‘、加加卫成本’ i ’更會因鑛膜失敗而影響該 平面鏡8的生產良率。 三、 由於該平面鏡8是呈平'面狀，因此，該反射光束 402具有沿該光束的出射路徑而反射至被該光接收單元 5接收的特性，因此，此龍準器在出料，每支均需檢測 其測距能力是否會因崎W/E調整而喪失，如此，不僅麻 煩，亦會衫響此種目苗準器的出貨速度。 【發明内容】 因此，本發明之目的，即在提供一種可減少光束内面 反射，而降低鍍膜需求，且可簡化出薇檢測程序的可減少 内面反射的光學測距裝置。 本發明可減少内面反射的光學測距裝置，包含一本體 、-接物鏡單元、—光發射單元、—光接收單元，及一凹 透鏡。該接物鏡單元是裝設於該本體内。該光發射單元是 二軸向裝设於該本體内，並位於該接物鏡單元之後。該 光接收單70疋裝設於該本體内，並位於該接物鏡單元之後 省凹透鏡疋裝設於該本體内，並位於該接物鏡單元之前 ，該凹透鏡具有-位於該光發射單元相反側的曲率令心。 【實施方式】 、有關本發明之前述及其他技術内纟、特點與工力效，在 以下配合芩考圖式之一較佳實施例的詳細說明中，將可清 楚的明白。 1290216 晋、〃閱圖2、3，為本發明可減少内面反射的光學測距裝 —、'时車乂么Λ施例，在本實施例中，該光學測距裝置是以 —準。。的恶樣作說明，該光學測距裳置包含：一本體⑺、 奸接物鏡單元2〇、_接目鏡單元3G、—變倍單元糾、二彈 3正單元50、-光發射單元6G、—光接收單元7〇、一第 一菱鏡組80、一篦-其於知ΠΛ 弟一曼鏡組90，及一凹透鏡1〇〇。 该本體10具有一第一端部u，及一沿一轴肖χ相反於 该弟一端部11的第二端部12。 ，/亥接物鏡單元20是裝設於該本體10的第-端部11内 Χ接物鏡單70 20具有一以球軸結構樞接於該本體10.的 鏡筒21，及數裝設於該鏡筒21内的鏡片22。 ，：該接目鏡單元30是裝設於該本體1〇的第二端部12内 “接目鏡單元3〇具有—鏡筒31，及數裝設於該鏡筒W 内的鏡片32 〇 一 /文七單元40是位於該第二菱鏡組90與該接目鏡單 :之間，該變倍單元4〇具有一裝設於該本體⑺内的第 筒41 套设於該第一内筒41上的第二内筒42、數 可移動地裝設於該第一内筒41内的透鏡組43，及一套設於 Χ本體1〇上的倍率調.整環44，該倍率調整環44通常具有 -經該本體ίο的-剖溝（圖未示）延伸至與該第二内筒42 =接的連接部（圖未示）。當使用者欲改變本實施例的放大 仡率時，即可轉動該倍率調整環44，而驅動該第二内筒42 =對於該第-内筒41轉動’如此，該等透鏡組U藉由數 導銷與數凸輪導溝的配合帶動即可產生沿該軸❾X相互靠 8When the body 1 is connected to the other end of the eyepiece unit (not shown), the aiming function can be completed. Although the target device can achieve the purpose of ranging and aiming, in the actual use and manufacture, the sight has the following defects: 1. Although the plane mirror 8 is plated with multiple layers of high penetration. The anti-reflection film, however, the plane mirror 8 is still substantially unable to achieve a transmittance of 1%, and when the beam 401 is projected onto the plane mirror §, the σ 卩 反射 reflected beam of the beam 4 〇 1 402 is still reflected by the plane mirror 8. At this time, since the plane mirror 8 is planar, and the incident angle and the reflection angle of the beam 401 are both equal to 0 degrees, the reflected beam 402 will follow the beam 401. The exit path is reflected to penetrate the semi-transmissive reflective surface 602 and then reflected by the reflective surface 701 to be received by the light receiving unit 5, thereby causing the light receiving unit 5 to occur before the light beam 401 is reflected back by the target The problem of incorrect reception is such that not only the interference of the signal will be generated, but also the miscalculation of the difference between the transmission and reception time is more likely to reduce or disappear the ranging capability of the sight, and seriously affect the accuracy of the ranging. Ί 290216 2. In order to improve the penetration of the plane mirror 8, the plane mirror 8 must be / page key. On the other hand, the penetrating anti-reflective film, the demand for such a high-grade mineral film, not only the ‘the plus cost of the garnish’, but also the production yield of the mirror 8 due to the failure of the film. 3. Since the plane mirror 8 is in a flat 'face shape, the reflected light beam 402 has a characteristic of being reflected along the exit path of the light beam to be received by the light receiving unit 5, and therefore, the dragon device is discharging, each The branch needs to check whether its ranging capability will be lost due to the adjustment of W/E. Therefore, it is not only troublesome, but also the speed of shipment of such a target. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an optical distance measuring device which can reduce the inner surface reflection of a light beam while reducing the need for coating, and which can simplify the detection process of the inner surface. The optical distance measuring device for reducing internal reflection of the present invention comprises a body, an objective lens unit, a light emitting unit, a light receiving unit, and a concave lens. The objective lens unit is mounted in the body. The light emitting unit is biaxially mounted in the body and located behind the objective lens unit. The light receiving unit 70 is mounted in the body, and after the objective lens unit is disposed, the concave lens is disposed in the body, and is located before the objective lens unit, and the concave lens has a side opposite to the light emitting unit. Curvature makes the heart. [Embodiment] The foregoing and other technical features, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. 1290216 Jin, 〃 图 2、 2、 2、 2、 2、 2、 2、 2、 2、 2、 2、 2、 2、 2、 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学. According to the evil sample, the optical ranging device includes: a body (7), a stalking objective unit 2 〇, an _ eyepiece unit 3G, a zoom unit correction, a second bomb 3 positive unit 50, a light emitting unit 6G, - a light receiving unit 7A, a first prism group 80, a cymbal cymbal group 90, and a concave lens 1 〇〇. The body 10 has a first end portion u and a second end portion 12 that is opposite to the one end portion 11 of the young one. The gantry lens unit 20 is mounted in the first end portion 11 of the body 10, and the objective lens unit 70 20 has a lens barrel 21 pivotally connected to the body 10. The lens 22 in the lens barrel 21. The eyepiece unit 30 is mounted in the second end portion 12 of the body 1" "the eyepiece unit 3" has a lens barrel 31, and a plurality of lenses 32 mounted in the lens barrel W. The seventh unit 40 is located between the second prism group 90 and the eyepiece unit. The zoom unit 4 has a first cylinder 41 mounted in the body (7). The first inner cylinder 41 is disposed on the first inner cylinder 41. a second inner cylinder 42 , a plurality of lens groups 43 movably mounted in the first inner cylinder 41 , and a set of magnification adjustment ring 44 disposed on the cymbal body 1 , the magnification adjustment ring 44 Generally, there is a connecting portion (not shown) extending through the body ίο to a connecting portion (not shown) connected to the second inner cylinder 42. When the user wants to change the magnification of the embodiment, The magnification adjustment ring 44 can be rotated to drive the second inner cylinder 42 to rotate for the first inner cylinder 41. Thus, the lens groups U can be generated by the cooperation of the number of guide pins and the plurality of cam guide grooves. Along the axis ❾X leans against each other 8
設於該本體10内，並位於該第一菱鏡組80之後，在本實 施例中，該光接收單元70是為一種雪崩光敏二極體（ApD) 1290216 近或遠離的動作，進而 該等彈著補正單元實Γ例的放大倍率。 -與該接物鏡單元2G 本體ig上’並具有 50 4：；：^ 、下調整彈道料偏差（章^纟料風向料偏差或上 差（業界一般稱為W/E調整），在圖2 、3中本貫施例僅示出 τ ... 、， π整上、下瞄準偏差的其申一個彈 ”可早凡，當使用者轉動該調j整件51時，該調整件 "、下移動而推抵該鏡筒21的後端部。 該光發射單元6G是沿該軸向X裝設於該本體内，並位Provided in the body 10 and behind the first prism group 80, in the embodiment, the light receiving unit 70 is an avalanche photosensitive diode (ApD) 1290216 near or far away, and so on. The magnification of the actual example of the correction unit is played. - with the objective lens unit 2G on the body ig ' and has 50 4:;: ^, the lower adjustment of the ballistic material deviation (the chapter / the wind direction material deviation or the difference (the industry is generally referred to as W / E adjustment), in Figure 2 The third embodiment of the present embodiment only shows that τ ... , , π the upper and lower aiming deviations of the one of the bombs can be used earlier, when the user turns the j piece 51, the adjustment piece " And moving downward to push against the rear end portion of the lens barrel 21. The light emitting unit 6G is mounted in the body along the axial direction X, and is positioned
於該第一菱鏡組8G之後，該光發射單元20可沿該軸向X 朝該^菱鏡組80投射出—光束61。在本實施例中，該光 發射單元60是為一種雷射二極體（LD )。 该光接收單元70是沿一與該軸向χ垂直的縱方向丫裝 該第一菱鏡組80是裝設於該本體10内並鄰近於該光 發射單元60，該第一菱鏡組80具有一第一菱鏡81，及一 第一曼鏡82，該第一菱鏡81具有一朝向該光發射單元6〇 的第一反射面811，及一沿該縱方向γ相反於該第一反射面 811的第一接合面812，該第二菱鏡82具有一與該第一接合 面812對接的第二接合面821。在本實施例中，該第一接合 面812局部地鍍設有一反射膜（圖未示）。 該第二菱鏡組90是裝設於該本體1 〇内，並位於該第 1290216 :=8。，後:且鄰近於該光接收單元7〇。該第二菱鏡 91 ”有一第二曼鏡91，及一第四菱鏡92,該第三菱鏡 -有-朝向該光接收單元7〇的出光面911，及一沿該縱 向^目反於該出光面911的第三接合面912，該第四菱鏡 ，、有-與該第三接合面911對接的第四接合面921。在本 I施例中’該第四接合φ 921局部地鑛設有—反射膜（圖 未不）〇 該凹透鏡100是農設於該本體1〇的第一端部η内，並 =於邊接物鏡單元2G之前’該凹透鏡刚是凹向該接物鏡 早凡20而具有一位於該光發射單元60相反側的曲率中心 110 ’在本實施射，該凹透鏡1⑼的鏡片厚度是呈等厚狀 ’且，該凹透鏡的-曲率半#尺是不小於公董。 藉此，當該光發射單元6G投射出該光束61時，該光 束61經該第一反射面81卜該第一接合面m反射，可穿 透該等鏡片22與該凹透鏡100，而朝外投射至一目標物（ 圖未不）上’當該光束61被該目標物反射後，該光束61 可反向穿透該凹透鏡100、該等鏡片22與該第一、二接合 面812、821’並被該第四接合面921反射至被該光接收單 元7〇接收，如此，利用該光束61的發射、接收時間差， 及該光束61的光速作運算，即可完成測距的功能。 同％，如圖3所不，當該光束6丨投射至該凹透鏡丨〇〇 上時，該光束61的部份反射光束62亦會被該凹透鏡1〇〇 反射，然而，由於該凹透鏡1〇〇是呈球面狀，且該凹透鏡 100的鏡面是凸向該第一菱鏡組8〇，因此，該光束61的入 10 1290216 射角與反射角會大於〇度，如此，該反射光束62即不會沿 该光束61的出射路徑反射至穿透該第一、二接合面812、 821 ’然後再被該第四接合面921反射至被該光接收單元7〇 接收’因而可避免該光接收單元70在該光束61被目標物 反射回來之前發生誤接收的問題。 經由以上的說明，可再將本發明的優點歸納如下：After the first prism group 8G, the light emitting unit 20 can project a light beam 61 along the axis X toward the lens group 80. In the present embodiment, the light emitting unit 60 is a laser diode (LD). The light receiving unit 70 is mounted in the longitudinal direction perpendicular to the axial direction. The first prism group 80 is mounted in the body 10 and adjacent to the light emitting unit 60. The first prism group 80 is disposed. Having a first prism 81 and a first mirror 82 having a first reflecting surface 811 facing the light emitting unit 6〇, and a first γ opposite to the first in the longitudinal direction The first joint surface 812 of the reflecting surface 811 has a second joint surface 821 that abuts the first joint surface 812. In this embodiment, the first bonding surface 812 is partially plated with a reflective film (not shown). The second prism group 90 is mounted in the body 1 and is located at the 12902216:=8. , after: and adjacent to the light receiving unit 7〇. The second prism 91" has a second mirror 91, and a fourth prism 92, the third mirror has a light-emitting surface 911 facing the light receiving unit 7, and a longitudinal The fourth joint surface 912 of the light-emitting surface 911 has a fourth joint surface 921 that abuts the third joint surface 911. In the present embodiment, the fourth joint φ 921 is partially The earth ore is provided with a reflective film (not shown). The concave lens 100 is disposed in the first end portion η of the body 1〇, and is before the edge of the objective lens unit 2G. The objective lens 20 has a center of curvature 110' on the opposite side of the light emitting unit 60. In the present embodiment, the lens thickness of the concave lens 1 (9) is equal in thickness 'and the radius of the concave lens is not less than Therefore, when the light emitting unit 6G projects the light beam 61, the light beam 61 is reflected by the first reflecting surface 81 and the first joint surface m, and the lens 22 and the concave lens 100 can be penetrated. And projecting outward to an object (not shown). When the beam 61 is reflected by the object, the beam 61 can be reversed. The concave lens 100, the lens 22 and the first and second joint faces 812, 821' are reflected by the fourth joint surface 921 to be received by the light receiving unit 7A, and thus, the time difference of transmission and reception by the light beam 61 is utilized. And the light speed of the beam 61 is calculated to complete the function of ranging. Similarly, as shown in FIG. 3, when the beam 6丨 is projected onto the concave lens, the partial beam of the beam 61 is reflected. 62 is also reflected by the concave lens 1〇〇, however, since the concave lens 1〇〇 is spherical, and the mirror surface of the concave lens 100 is convex toward the first prism group 8〇, the beam 61 enters 10 1290216 The angle of incidence and the angle of reflection may be greater than the degree of twist, such that the reflected beam 62 does not reflect along the exit path of the beam 61 to penetrate the first and second joint faces 812, 821 'and then the fourth joint face The 921 is reflected to be received by the light receiving unit 7', thereby avoiding the problem that the light receiving unit 70 is erroneously received before the light beam 61 is reflected back by the target. Through the above description, the advantages of the present invention can be further summarized as follows :
發明的凹透鏡100是呈球面狀，且該凹透鏡1〇〇 的鏡面疋凸向該第一菱鏡組80，因此，該光束61的入射角 與反射角會大於G度，如此，該反射光束62即不會沿該光 束61的出射路徑反射至穿透該第一、二接合面812、821， 。後再被《亥第四接合面921反射至被該光接收單元接收 ，因此，本發明可有效避免該光接收單元70'在該光束61 被目標物反射回來之前發生誤接收的問題，如此，本發明 料會產生訊號的干擾，並可預防發射、接收時間差的誤 算，而有效提昇測距能力。 二、 本發明的凹透鏡100本身即可有效防止該反射光 束62 該光束61的出射路徑反射至被該光接收單元接 收，因此，相較於習知的平面鏡8，該凹透鏡ΗΚ)所需鑛設 的抗反射膜層數可大幅減少，如此1了可降低鑛膜需求 ，而大幅降低該凹透鐘〗η〇 & ^ Τ上、[ 延筑100的加工成本外，更可避免該凹 透鏡100因鍍膜作業失敗而影響生產良率。 三、 由於本發明的凹透鏡100是呈球面狀，因此，該 反射Μ62並不具有㈣光束61的出射路徑反射至被該 光接收單元70接㈣特性，因此，本發明在出廠時，並不 1290216 需檢測其測距能力是否备 不僅玎1儿丄々 曰U進行W/Ε調整而喪失，如此， 不僅可間化本發明的出廢 出廠杈測程序，更可提昇本發明的出 传一提的是’本發明之應用並不侷限於瞄準器，例 如可取消該接目鏡單元3〇、兮以 一 該瓷倍單元40、該彈著補正單 凡5〇而成為-基本的雷射測距儀，亦可達到減少内面反射 的目的。The concave lens 100 of the invention is spherical, and the mirror surface of the concave lens 1〇〇 is convex toward the first prism group 80. Therefore, the incident angle and the reflection angle of the light beam 61 are greater than G degrees, and thus, the reflected light beam 62 That is, it does not reflect along the exit path of the light beam 61 to penetrate the first and second joint faces 812, 821. After being reflected by the fourth joint surface 921 to be received by the light receiving unit, the present invention can effectively avoid the problem that the light receiving unit 70' is erroneously received before the light beam 61 is reflected back by the target. The invention material can generate signal interference, and can prevent miscalculation of transmission and reception time difference, and effectively improve the ranging capability. 2. The concave lens 100 of the present invention can effectively prevent the reflected beam 62 from being reflected by the light receiving path of the reflected beam 62 to be received by the light receiving unit. Therefore, compared with the conventional plane mirror 8, the concave lens is required to be disposed. The number of anti-reflection film layers can be greatly reduced, so that the demand for the mineral film can be reduced, and the concave lens 100 can be greatly reduced, and the concave lens 100 can be avoided in addition to the processing cost of the extension 100. Production yield is affected by failure of coating operations. 3. Since the concave lens 100 of the present invention is spherical, the reflection Μ 62 does not have the exit path of the (four) light beam 61 reflected to the fourth receiving characteristic of the light receiving unit 70. Therefore, the present invention is not 1290216 when shipped from the factory. It is necessary to check whether the ranging capability is not only lost by W/Ε adjustment, but also not only can the wasteted factory speculation program of the present invention be interspersed, but also the promotion of the present invention can be improved. The application of the present invention is not limited to the sight. For example, the eyepiece unit 3 can be eliminated, and the porcelain unit 40 can be used to make a basic laser ranging. The instrument can also achieve the purpose of reducing internal reflection.
歸納上述’本發明之可減少内面反射的光學測距裝置 不僅可減少光束内面反射，而降低鍍膜需求，更可簡化 出廠k測％序，而提昇出貨速度，故確實能達到發明之目 的0 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 12 1290216 【圖式簡單說明】 圖1是習知一 意圖； 種具有測距功能的瞄準器 的局部剖視示 圖2是本發明可減少内面反射的光學測距裝置的一較 佳實施例的剖視示意圖；及 圖3疋圖2的局部放大示意圖，說明反射光束不會被 反射至一光接收單元上。The above-mentioned optical distance measuring device capable of reducing internal reflection can not only reduce the reflection of the inner surface of the beam, but also reduce the coating demand, and can simplify the order of the factory, and improve the shipping speed, so it can truly achieve the purpose of the invention. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. 12 1290216 [Simplified illustration of the drawings] Fig. 1 is a schematic view of a prior art; FIG. 2 is a perspective view of a preferred embodiment of an optical distance measuring device capable of reducing internal reflection of the present invention. A schematic cross-sectional view; and a partially enlarged schematic view of FIG. 3 and FIG. 2, illustrating that the reflected beam is not reflected onto a light receiving unit.
13 1290216 【主要元件符號說明】 ίο......*本體 11……"第一端部 12，……第二端部 2 0…—接物鏡單元 21 *……鏡筒 22*鏡片 30 ^ —"接目鏡單元 .31"* —鏡筒 32……，鏡片 4〇……•變倍單元 41 ....."第一内筒 42…·…第二内筒 4 3…*…透鏡組 44……♦倍率調整環 5 〇^彈著補正單元 . 5 1 *調整件 6 0 ""…光發射單元 61 *……光束 62 "…"反射光束 7 0……·光接收單元 8 0……，第一菱鏡組 81 »……第一蔓鏡 811……第一反射面 812· — •第一接合面 82……··第二菱鏡 821......第二接合面 90…"…第二菱鏡組 91.....…第三菱鏡 911…"出光面 912……第三接合面 92··……第四菱鏡 921……第四接合面 100……凹透鏡 110***…曲率中心 R………曲率半徑 X.....*…軸向 Y........*縱方向 1413 1290216 [Description of main component symbols] ίο......*body 11..."first end 12, ... second end 2 0...--object lens unit 21 *...lens 22* lens 30 ^ —" Eyepiece unit .31 "* —Lens tube 32..., lens 4〇...•Division unit 41 ....."First inner cylinder 42...·...Second inner cylinder 4 3 ...*...Lens group 44...♦ Magnification adjustment ring 5 〇^Blast correction unit. 5 1 *Adjustment piece 6 0 ""...light emission unit 61 *...beam 62 "..." reflected beam 7 0 ....light receiving unit 8 0..., first prism group 81 » ... first vine mirror 811 ... first reflecting surface 812 · - • first joint surface 82 ... · · second mirror 821. ..... second joint surface 90..."...second mirror group 91........third prism 911..."light surface 912...third joint surface 92··...fourth Mirror 921...four joint surface 100...concave lens 110***...curvature center R......curvature radius X.....*...axial Y........*longitudinal direction 14