49 I I twf.doc/0 06 Λ7 49 I I twf.doc/0 06 Λ7 經濟部智慧財產局員工消費合作社印製 五、發明說明（/ ) 本發明是有關於一種夜視觀測系統（Night Vision System)及方法，且特別是有關於一種遠近距離均可適用的 遠近觀測夜視系統（Both Long and Short Range Night Vision49 II twf.doc / 0 06 Λ7 49 II twf.doc / 0 06 Λ7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (/) The present invention relates to a night vision system (Night Vision System) And method, and more particularly, a long and short range night vision system (Both Long and Short Range Night Vision)
System)及方法。 一般觀測距離範圍較大、且可同時適用於遠、近距離 觀測的夜視系統，通常是使用具有低値f數(f-number)的鏡 頭，在進行夜視觀測時增加系統所接收的進光量，因此可 以進行較遠距離的觀測。不過由於具有低値f數之鏡頭的 價格昂貴，所以使用這種鏡頭將會導致整個觀測系統的成 本上揚。而爲了在進行夜視觀測時，能夠增加對目標物的 照度，則發展出另一種方法，即是在夜視系統內加裝手動 式連續波（Continuous Wave, CW)雷射照明器’採取人工手 動控制方式，利用雷射照明目標物以增加照度，因此亦可 進行較遠距離之夜視觀測。但是使用連續波雷射照明器進 行夜視觀測時，由於其光散射雜訊較大’所以僅能略爲增 加觀測距離。不過，當觀察點與目標物之間的大氣散射太 強時，例如是觀察點與目標物之間的大氣狀態之擾動、空 氣密度的變化較大時，或者有雲、霧、煙、…等阻隔時， 前述兩種夜視系統之觀測效率將因而受到影響’其有效觀 測距離皆會大幅度縮減。 因此本發明提供一種夜視觀測系統及方法’可同時適 用於遠 '近不同距離下進行夜視觀測。應用在近距離目標 物觀測時，不需使雷射照明器，直接進行夜視觀測；與目 標物之距離較遠時，則使用雷射照明器以雷射脈衝進行目 3 .-----ί I I I--^ !--—------ 〈請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A.l規格（210*297公髮） 經濟部智慧財產局員工消費合作社印製 424158 ^ 49 11 twf.d〇c/006 五、發明說明（之） 標物照明，並與接收影像進行觀測之影像光放管（Image Intensified Tube)的閘門控制配合，以提高目標物照度，增 加觀察距離，並降低散射雜訊。 根據本發明之上述及其他目的，提出一種夜視觀測系 統及方法，可應用在不同距離進行夜視觀測。此種夜視觀 測系統架構中，具有雷射測距儀、距離判斷裝置、脈衝產 生器、訊號延遲電路、雷射照明器，以及閘門控制電路和 影像光放管。設定無外加目標照明光源時的系統有效距 離，並使用雷射測距儀進行距離量測以獲得目標距離，然 後由距離判斷裝置比較目標距離與系統設定距離。當目標 距離小於系統設定距離時，不需使用雷射照明目標，以閘 門控制電路操縱影像光放管直接進行觀察。當目標距離大 於或等於系統設定距離時，則使用雷射照明器以雷射脈衝 進行目標照明，且同時以閘門控制電路控制影像光放管的 閘門，對於雷射脈衝照明之目標進行觀測。因此可以增加 目標照度、延伸觀測距離、抑制散射雜訊，並能適用於不 同遠、近距離的狀態下進行夜視觀測。 , 爲讓本發明之上述和其他目的、特徵、和優點能更明 顯易懂，下文特舉較佳實施例，並配合所附圖式，作詳細 說明如下： ^ 圖式之簡單說明： 第1圖所繪示爲依照本發明之較佳實施例，一種夜視 觀測系統的結構示意圖； 第2圖所繪示爲依照本發明之較佳實施例，一種夜視 4 ------If —1Λ裝——.1 丨訂---------竣 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（C'NS)A._1規格U10 X 297公釐） 經濟部智慧財產局員工消費合作社印製 1 24 t 5 8 ^ 49 l i twf,doc/006 五、發明說明（2) 觀測方法的流程圖；以及 第3圖所繪示爲依照本發明之較佳實施例，一種夜視 觀測系統及方法，當目標距離大於或等於系統設定距離 時，輸入閘門控制電路及雷射照明器之脈衝訊號波形比對 不意圖。 圖式之標記說明： 100 :距離量測裝置 102 :影像光放管 104 :雷射照明器 106 :距離判斷裝置 108 :脈衝產生裝置 110 :閘門控制裝置 112 :訊號延遲裝置 20◦〜208 :依據本發明其中一種夜視觀測方法流程的 步驟 300 :輸入雷射照明器之脈衝訊號 302 :輸入閘門控制裝置之脈衝訊號波形 實施例 請參照第1圖，其所繪示的是依照本發明之較佳實施 例，一種夜視觀測系統的結構示意圖。本發明之夜視觀測 系統架構的方塊示意圖如第1圖所示，具有距離量測裝置 100、影像光放管102及雷射照明器104等，分別用以發出 光波及/或接收光波，而且距離量測裝置100、影像光放管 102及雷射照明器104三者與目標物（未顯示於圖中）之間的 5 -------- f f 裝--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 本纸張八度洎用中囤國家標準（CNS)A4規格（2〗0 X 297公釐） 424彳5 8碣 liwf.doc/006 B7 五、發明說明（4) 距離相同。其中距離量測裝置丨00是用以對於夜視觀測系 統與目標物之間的距離友進行測量，距離量測裝置丨00包 括測距儀’例如雷射測距儀等。 而影像光放管102在沒有外加之目標照明光源的狀況 下，其最大有效距離爲可以藉由下列方程式第（1)式估 計而得到：System) and methods. Generally, a night vision system with a large observation distance range can be used for both long and short distance observations. Generally, a lens with a low 数 f number (f-number) is used to increase the input received by the system during night vision observation. The amount of light, so you can observe from a long distance. However, because lenses with low 値 f-numbers are expensive, the use of such lenses will cause the cost of the entire observation system to rise. In order to increase the illuminance of the target during night vision observation, another method has been developed, which is to install a manual continuous wave (CW) laser illuminator in the night vision system. The manual control method uses laser to illuminate the target to increase the illuminance, so it can also perform night vision observation at a long distance. However, when using continuous wave laser illuminators for night vision observations, the observation distance can only be slightly increased because of its large light scattering noise. However, when the atmospheric scattering between the observation point and the target is too strong, for example, the disturbance of the atmospheric state between the observation point and the target, the change in air density is large, or there are clouds, fog, smoke, etc. When blocking, the observation efficiency of the aforementioned two night vision systems will be affected accordingly, and their effective observation distances will be greatly reduced. Therefore, the present invention provides a night vision observation system and method, which can be simultaneously applied to night vision observation at different distances. When applied to short-distance target observation, it is not necessary to use the laser illuminator to directly perform night vision observation; when the distance to the target is far, use the laser illuminator to perform the laser pulse with the laser pulse 3 .---- -ί II I-^! ---------- <Please read the notes on the back before filling out this page) This paper size is applicable to China National Standard (CNS) Al specifications (210 * 297) Printed by the Consumer Cooperative of the Ministry of Intellectual Property Bureau 424158 ^ 49 11 twf.d〇c / 006 V. Description of the invention (of) Control of the gate of the Image Intensified Tube which illuminates the target and observes the received image Cooperate to increase the illumination of the target, increase the observation distance, and reduce the scattered noise. According to the above and other objects of the present invention, a night vision observation system and method are proposed, which can be applied to perform night vision observation at different distances. This night vision observation system architecture includes a laser rangefinder, a distance judgment device, a pulse generator, a signal delay circuit, a laser illuminator, a gate control circuit and an image light-emitting tube. Set the effective distance of the system when there is no additional target illumination light source, and use the laser rangefinder to perform distance measurement to obtain the target distance, and then the distance judgment device compares the target distance with the system set distance. When the target distance is less than the set distance of the system, it is not necessary to use the laser to illuminate the target, and the image control tube is operated by the gate control circuit to directly observe. When the target distance is greater than or equal to the system set distance, the laser illuminator is used to illuminate the target with laser pulses, and the gate control circuit is used to control the shutter of the image light-emitting tube to observe the target illuminated by laser pulses. Therefore, it can increase the target illuminance, extend the observation distance, suppress the scattered noise, and be applicable to night vision observation at different distances and distances. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the preferred embodiments are described below in detail with the accompanying drawings as follows: ^ Brief description of the drawings: Section 1 The figure shows a schematic diagram of a night vision observation system according to a preferred embodiment of the present invention. The figure 2 shows a night vision 4 ------ If according to a preferred embodiment of the present invention. —1ΛPackage ——. 1 丨 Order --------- End (Please read the precautions on the back before filling this page) This paper size applies to China National Standard (C'NS) A._1 Specification U10 X 297 mm) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 1 24 t 5 8 ^ 49 li twf, doc / 006 V. Description of the invention (2) Flow chart of the observation method; A preferred embodiment of the invention is a night vision observation system and method. When the target distance is greater than or equal to the system set distance, the comparison of the pulse signal waveforms of the input gate control circuit and the laser illuminator is not intended. Explanation of the marks of the drawings: 100: distance measuring device 102: image light emitting tube 104: laser illuminator 106: distance judging device 108: pulse generating device 110: gate control device 112: signal delay device 20◦ ~ 208: basis Step 300 of one method of night vision observation method of the present invention: input pulse signal of laser illuminator 302: input pulse signal waveform of gate control device. For an example, please refer to FIG. 1, which shows a comparison according to the present invention. The preferred embodiment is a schematic structural diagram of a night vision observation system. The block diagram of the night vision observation system architecture of the present invention is shown in Fig. 1. It has a distance measuring device 100, an image light emitting tube 102, and a laser illuminator 104, etc., which are respectively used to emit light waves and / or receive light waves, and 5 between the distance measurement device 100, the image light emitting tube 102 and the laser illuminator 104 and the target (not shown) -------- ff equipment -------- -Order --------- Line (Please read the precautions on the back before filling out this page) National Paper (CNS) A4 Specification (2〗 0 X 297 mm) 424 彳 5 8 碣 liwf.doc / 006 B7 5. Description of the invention (4) The distance is the same. The distance measuring device 00 is used to measure the distance between the night vision observation system and the target object. The distance measuring device 00 includes a range finder such as a laser range finder. The maximum effective distance of the image light emitting tube 102 under the condition of no additional target illumination light source can be obtained by the following equation (1):
Ed=EsEd = Es
4(F #、2 ⑴ 經濟#智慧財產局員J-消費合作社印製 在第⑴式中，&表示影像光放管102所能夠檢知的最低照 度、瓦表示目標物位置的照度、户表示目標物的反射率、产 表示鏡頭的f値、以的表示大氣的穿透率、而^則表示鏡 頭的穿透率。 然而目標物與夜視觀測系統之間，由於大氣狀態之擾 動、空氣密度的變化，以及雲、霧、煙、灰塵、…等的阻 @，所以影像光放管102之觀測距離將因而受限，但仍可 根據最大有效距離^進行估計。其中影像光放管之有 效觀測距離約爲^與最大有效距離J成正比，而i則是 —個經驗係數値，通常所選取的範圍約爲0.6至0.8。 請再參照第1圖，距離判斷裝置106是與距離量測裝 置100耦接’用以判斷目標距離與系統有效觀測距離W 之間的關係，例如是或及<如。脈衝產生裝置 1〇8例如脈衝產生器等，則是和距離判斷裝置1〇6耦接， 即由距離判斷裝置106控制脈衝產生裝置ι〇8。 閘門控制裝置110例如閘門控制電路等，則是配置於 -----------ft--------訂---------織 (請先閱讀背面之注意事項再填寫本頁) 國家標準（C'NS)A.l 規格（2]ϋ X 297 公髮「 經濟部智慧財產局員工消費合作社印製 4 2 4 1 5 8 i _ 49 I ] twf.doc/006 Λ7 ----BZ_ 五、發明說明（t ) 距離量測裝置100與影像光放管102之間，並分別與距離 判斷裝置106、脈衝產生裝置108、訊號延遲裝置112及影 像光放管102互相耦接，用以接收距離判斷裝置.106或脈 衝產生裝置108的訊號，控制影像光放管102的閘門動作， 使影像光放管102接收由目標物反射的光線或雷射脈衝。 訊號延遲裝置112包括延遲電路等1配置於距離量測裝置 i〇〇與影像光放管102之間，且分別與脈衝產生裝置108 及閘門控制裝置110相互連接。訊號延遲裝置112接收來 自脈衝產生裝置108的脈衝訊號，並產生延遲脈衝訊號， 以控制影像光放管102之動作。 請參照第2圖，其所繪示的是依照本發明之較佳實施 例，一種夜視觀測方法的流程圖，並配合第1圖所示。於 夜間欲對某一方向的特定目標物進行觀察時，如第2圖中 之步驟200,首先使用例如是距離量測裝置1〇〇測量夜視 觀測系統與目標物之間的距離i?。然後進行第2圖中之步 驟202，由距離判斷裝置1〇6將目標距離與系統之有效 觀測距離U加以比較進行判斷。 當目標距離小於系統設定距離U時’亦即XcAc/時， 進行第2圖中之步驟204，由距離判斷裝置106發出訊號 並傳送至閘門控制裝置110,然後由閘門控制裝置η〇控 制影像光放管.102的閘門電壓，使閘門電壓爲一固定電壓， 並將影像光放管102的閘門打開，以接收由目標物反射之 光線，對目標物進行直接觀察。 當目標距離大於或等於系統設定距離^時，亦即 7 ----------人 ·裝-----訂-------！a (請先閱讀背面之注意事項再填寫本頁) 本紙張K度適用中國國家標準（CNS>Ai規格（2】0 X四7公釐） Λ7 五 經濟部智慧財產局員工消費合作社印製 5 8 j 491 ltwf.doc/006 發明說明（6) 切時，貝fj進行第2圖中之步驟206，距離判斷裝置106 依據距離量測裝置丨〇〇所測得的目標距離及進行處理，並 發出訊號傳輸至脈衝產生裝置108以產生脈衝序列訊號。 其中脈衝訊號之寬度爲單位是時間，例如約爲Γ微秒 (nsec) ’而脈衝週期爲，c則代表真空中之光速。 由脈衝產生裝置108產生的脈衝序列訊號，將同時傳 輸至訊號延遲裝置112與雷射照明器104,以激發雷射照 明器104,同時經由訊號延遲裝置112產生延遲脈衝序列 訊號，其延遲時間爲以控制影像光放管102的閘門。 也就是當雷射照明器104 —經驅動，並發射雷射脈衝進行 目標物照明時，隨即關閉影像光放管102的閘門，並暫停 觀察目標物影像。 接著再進行第2圖中之步驟208，雷射脈衝由雷射照 明器104發射經目標物反射，光脈衝折回後，到達影像光 放管102而被接收。因此在發出雷射脈衝之後，經過2仞^ 的延遲時間，立即由閘門控制裝置110操縱影像光放管102 的閘門並將其打開，而閘門打開的時間爲以接收由目 標物反射之雷射脈衝，因此完成一個雷射脈衝週期的動 作。然後再由雷射照明器104發射出另一個雷射脈衝，重 覆前一個雷射脈衝週期的動作。 請參照第3圖，其所繪示的是依照本發明之較佳實施 例，一種夜視觀測系統及方法，當目標距離大於或等於系 統設定距離時，由脈衝產生裝置108輸入閘門控制裝置u〇 之脈衝訊號，以及由訊號延遲裝置112輸入雷射照明器之 8 ---I-------A· --------訂 -----— ！λ -(請先閱讀背面之注意事項再填寫本頁) . 本紙張尺度適用中®國家標準（CNS)A4規格（210x297公釐） 經濟部智慧財產局員工消費合作社印5衣 4 24彳5 8 491 ltwf.doc/006 五、發明說明（η ) 脈衝訊號，在同一個雷射脈衝週期內的波形比對示意圖。 如第3圖所示，其中脈衝訊號300是輸入雷射照明器104 之脈衝訊號，而脈衝訊號302則是由脈衝產生裝置108經 訊號延遲裝置U2再輸入閘門控制裝置110之脈衝訊號。 其中脈衝訊號300與脈衝訊號302之脈衝寬度皆爲，單 位爲時間，例如約爲1微秒。而脈衝訊號300與脈衝訊號 302之間的延遲時間爲2仞c，此外兩者的脈衝週期皆爲爲 tw+2R/c ° 由上述本發明較佳實施例可知，應用本發明具有下列 特點： 1. 本發明係使用雷射測距取得目標距離訊號，並以目 標距離訊號驅動脈衝產生器，其所產生之脈衝序列訊號的 週期，亦是由目標距離訊號來決定。而脈衝序列訊號除了 用以驅動雷射照明器產生雷射脈衝，益且同時用以控制影 像光放管的閘門，使其僅於雷射脈衝經目標反射回夜視觀 測系統時才打開，並於脈衝寬度時間內對目標進行觀察’ 使用此種控制模式進行夜視觀測，可以大幅度降低因長時 間觀測所接收的光散射雜訊。 2. 本發明可以同時適用於遠、近不同距離下進行夜視 觀測，當目標距離小於系統設定距離時不驅動雷射_，亦即 不進行目標照明，以影像光放管直接進行目標觀察。當目 標距離大於或等於系統設定距離時，則驅動雷射照明器， 以雷射脈衝進行目標照明，並控制影像光放管的閘門，對 於雷射照明之目標進行觀測。因此可以提高目標物照度並 9 -----------裳------訂---------Λ (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中囤囤家標準（CNS)Al規格（2UM 297公釐） 491 ltwf.doc/006 Λ7 R7 發明說明（X) 增大觀測態範圍。 請參照第丨表，其所列示的是習知技藝與本發明之夜 視觀測系統及方法的特性比較。 第1表習知技藝與本發明之特性比較 比較 項目\\ 習知技藝 本發明 雷射照明 以手動方式控 制，且使用連續 波雷射進行目標 照明，其光散射 雜訊較大。 以自動方式控制，利用雷 射iTi儀測得之距離訊號 驅動脈衝雷射進行照明， 並與影像光放管之閘門控 制裝置配合進行觀察，可 以降低光散ϋ雜訊。 觀測動態範圍 雷射照明裝置與 夜視影像裝置各 自獨立，系統之 觀測動態範圍因 受限而較小。 將雷射照明裝®整合於系 統內，當目標距離小於系 統設定距離時，1賃驅動 雷射進行照明；若目標距 離大於或等於系統設定距 離時，則發出雷射脈衝進 行照明，具有彈性且較大 .----... _ 的系統觀測動態JI.圍。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 本紙張叉度適用中囤國家標丰（CN’S)yVl規格（210 χ 297公釐） -----------「裝·-------訂 --------ί (請先閱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制私4 (F # 、 2 ⑴ 经济 # Intellectual property bureau member J-Consumer Cooperative Co., Ltd. Printed in the first formula, & indicates the minimum illuminance that can be detected by the image light tube 102, watt indicates the illuminance of the target position, and household indication The reflectivity of the target object, f 表示, is the lens's transmittance, and ^ is the transmittance of the lens. However, between the target and the night vision observation system, due to the disturbance of the atmospheric state, the air The density changes, and the resistance of clouds, fog, smoke, dust, etc., so the observation distance of the image light emitting tube 102 will be limited, but it can still be estimated based on the maximum effective distance ^. Among them The effective observation distance is approximately ^ proportional to the maximum effective distance J, and i is an empirical coefficient 値, usually the selected range is about 0.6 to 0.8. Please refer to FIG. 1 again, the distance judgment device 106 is related to the distance amount. The measurement device 100 is coupled to determine the relationship between the target distance and the effective observation distance W of the system. For example, it is or < such as the pulse generating device 108, such as a pulse generator, and the distance determining device 1. 6 coupling, ie The distance judging device 106 controls the pulse generating device ι〇8. The gate control device 110, such as a gate control circuit, is configured at ----------- ft -------- order-- ------ Weaving (Please read the precautions on the back before filling this page) National Standard (C'NS) Al Specification (2) ϋ X 297 Issued “Printed by the Consumers’ Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 4 2 4 1 5 8 i _ 49 I] twf.doc / 006 Λ7 ---- BZ_ 5. Description of the invention (t) Between the distance measuring device 100 and the image light emitting tube 102, and the distance judging device 106 and the pulse, respectively The generating device 108, the signal delaying device 112, and the image light emitting tube 102 are coupled to each other to receive a signal from the distance judging device 106 or the pulse generating device 108, and control the shutter operation of the image light emitting tube 102, so that the image light emitting tube 102 Receives light or laser pulses reflected by the target. The signal delay device 112 includes a delay circuit 1 and is arranged between the distance measuring device 100 and the image light emitting tube 102, and is connected to the pulse generating device 108 and the gate control device, respectively. 110 is connected to each other. The signal delaying means 112 receives a pulse signal from the pulse generating means 108 A delayed pulse signal is generated to control the operation of the image light emitting tube 102. Please refer to FIG. 2, which shows a flowchart of a night vision observation method according to a preferred embodiment of the present invention, and cooperates with the first As shown in the figure, when a specific target in a certain direction is to be observed at night, as shown in step 200 in FIG. 2, a distance measuring device 100 is first used to measure the distance between the night vision observation system and the target. The distance i ?. Then, step 202 in FIG. 2 is performed, and the distance judgment device 106 compares the target distance with the effective observation distance U of the system to determine. When the target distance is less than the system set distance U ', that is, XcAc /, step 204 in FIG. 2 is performed, and a signal is sent from the distance judging device 106 and transmitted to the gate control device 110, and then the image control light is controlled by the gate control device η〇 The gate voltage of the tube 102 is set to make the gate voltage a fixed voltage, and the gate of the image light tube 102 is opened to receive the light reflected by the target and directly observe the target. When the target distance is greater than or equal to the system set distance ^, which is 7 ---------- Personal equipment -------- Order -------! a (Please read the precautions on the back before filling out this page) The K degree of this paper applies Chinese national standards (CNS > Ai specifications (2) 0 X 47 mm) Λ7 5 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5 8 j 491 ltwf.doc / 006 Description of the invention (6) When switching, the shell fj performs step 206 in the second figure, and the distance judging device 106 processes and processes the target distance measured based on the distance measuring device 丨 〇〇, and The transmitted signal is transmitted to the pulse generating device 108 to generate a pulse sequence signal. The width of the pulse signal is time, for example, approximately Γ microseconds (nsec) 'and the pulse period is, c represents the speed of light in a vacuum. The pulse sequence signal generated by the device 108 will be transmitted to the signal delay device 112 and the laser illuminator 104 at the same time to excite the laser illuminator 104, and the delayed pulse sequence signal will be generated through the signal delay device 112. The delay time is to control the image The gate of the light-emitting tube 102. That is, when the laser illuminator 104 is driven and emits laser pulses to illuminate the target, the shutter of the image light-emitting tube 102 is closed and suspended. Observe the image of the target. Then proceed to step 208 in Figure 2. The laser pulse is emitted by the laser illuminator 104 and reflected by the target. After the light pulse is turned back, it reaches the image light tube 102 and is received. Immediately after the firing pulse, a delay time of 2 仞 ^, the gate control device 110 immediately operates the shutter of the image light emitting tube 102 and opens it. The shutter is opened for receiving the laser pulse reflected by the target, so it is completed. The action of one laser pulse period. Then another laser pulse is emitted by the laser illuminator 104, repeating the action of the previous laser pulse period. Please refer to FIG. 3, which shows the method according to the present invention. A preferred embodiment is a night vision observation system and method. When the target distance is greater than or equal to the system set distance, the pulse signal of the gate control device u0 is input by the pulse generating device 108, and the laser illumination is input by the signal delay device 112. Device 8 --- I ------- A · -------- Order -------! Λ-(Please read the precautions on the back before filling this page). This paper Standard Applicable in China National Standard (CN S) A4 size (210x297 mm) Printed on the consumer cooperative of employees of the Intellectual Property Bureau of the Ministry of Economic Affairs 4 24 彳 5 8 491 ltwf.doc / 006 V. Description of the invention (η) The pulse signal is within the same laser pulse period. Schematic diagram of waveform comparison. As shown in Figure 3, the pulse signal 300 is the pulse signal input to the laser illuminator 104, and the pulse signal 302 is input to the gate control device 110 by the pulse generating device 108 through the signal delay device U2. Pulse signal. The pulse width of the pulse signal 300 and the pulse signal 302 are both, and the unit is time, for example, about 1 microsecond. The delay time between the pulse signal 300 and the pulse signal 302 is 2 仞 c, and the pulse period of both is tw + 2R / c ° According to the foregoing preferred embodiment of the present invention, it can be known that the application of the present invention has the following characteristics: 1. The present invention uses laser ranging to obtain the target distance signal and drives the pulse generator with the target distance signal. The period of the pulse sequence signal generated by it is also determined by the target distance signal. The pulse sequence signal is used to drive the laser illuminator to generate laser pulses, and it is also used to control the gate of the image light-emitting tube, so that it only opens when the laser pulse is reflected back to the night vision observation system by the target, and Observe the target within the pulse width time 'Using this control mode for night vision observation can greatly reduce the light scattering noise received for long-term observation. 2. The present invention can be applied to night vision observation at different distances, both near and far. When the target distance is less than the system set distance, the laser is not driven, that is, the target is not directly illuminated, and the target is directly observed with the image light tube. When the target distance is greater than or equal to the system set distance, the laser illuminator is driven to target illumination with laser pulses, and the shutter of the image light-emitting tube is controlled to observe the target of laser illumination. Therefore, the illumination of the target can be improved and 9 ----------- Shang ------ Order --------- Λ (Please read the precautions on the back before filling this page) This paper scale applies the CNS Al specification (2UM 297 mm) 491 ltwf.doc / 006 Λ7 R7 Description of the invention (X) Increase the observation range. Please refer to Table 丨, which shows the comparison of the characteristics of the conventional technique with the night vision observation system and method of the present invention. Table 1 Comparison of the characteristics of the know-how and the present invention. Item \\ Know-how The present invention The laser lighting is controlled manually and the continuous-wave laser is used for target lighting. The light scattering noise is relatively large. Automatically controlled, the distance signal measured by the laser iTi instrument is used to drive the pulsed laser for illumination, and the observation with the gate control device of the image light-emitting tube can reduce the light and noise. Observation dynamic range The laser illumination device and the night vision image device are independent, and the observation dynamic range of the system is small due to the limitation. Integrate the laser lighting device into the system. When the target distance is less than the system set distance, the driver drives the laser to illuminate. If the target distance is greater than or equal to the system set distance, the laser pulse is emitted for illumination. Larger observations of dynamic JI. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can store the national standard abundance (CN'S) yVl specification in the application of this paper without departing from the spirit of the present invention ( 210 χ 297 mm) ----------- "Fashion · ------- Order -------- ί (Please read the precautions on the back before filling this page) Intellectual Property Bureau of the Ministry of Economic Affairs