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i I ' ' I 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種雜散光量測技術，尤指一種用於量 測光學系統之雜散光量測系統與方法。 【先前技術】 應用於電子產品中的光學系統設計，一般只分析特定 幾個光線來確認所能達到的光學規格，例如焦距、成像光 點大小、各項像差、光學調制函數等，當光學系統完成前 魯述的光學设計達到設計規格後便進行生產製造，但是光學 系統在實際使用上，由物方向進入鏡頭的光線是具有各種 方向與角度的，因此往往在實際狀況下於成像面上會發現 部分區域有雜光、鬼影、炫光等現象的產生，這些效應雖 然可用特定功能的光學軟體來做分析以協助確認雜散光 的來源，但這種模擬分析最終仍須依靠對光學鏡頭做實際 的雜散光量測後，才足以確認並作為光學工程的改進依據 φ與參考。 就雜散光量測部份，在我國、美國及中國大陸均查無 相關之專利，僅見部份應用在光學系統中以提供降低雜散 光之結構或控制設計。目前雖然已經有相關的國際規範 (IS09358)加以說明，但在這種規範中，只提供—個大略 7輪廓與參考的方向，並未針對量測系統與量測方法做最 佳化的具體架構設計，因此並無法落實於雜散光量測的實 際應用。 在國際規範IS09358中，係將雜散光的量測分為定性 19832 5 1311197i I ' ' I nin, invention description: [Technical Field] The present invention relates to a stray light measurement technique, and more particularly to a stray light measurement system and method for a measurement optical system. [Prior Art] Optical system design used in electronic products generally only analyzes a certain number of rays to confirm the optical specifications that can be achieved, such as focal length, imaging spot size, various aberrations, optical modulation functions, etc. Before the system is completed, the optical design of the remarks is designed and manufactured, but in the actual use, the light entering the lens from the object direction has various directions and angles, so it is often in the actual condition on the imaging surface. Some areas will be found to have stray light, ghosting, glare and other phenomena. Although these effects can be analyzed with specific functional optical software to help confirm the source of stray light, this simulation analysis still has to rely on optics. After the actual stray light measurement of the lens, it is sufficient to confirm and as a basis for improvement of optical engineering φ and reference. Regarding the stray light measurement section, no related patents were found in China, the United States, and China, and only some of them were used in optical systems to provide a structure or control design for reducing stray light. Although there are already relevant international specifications (IS09358) to illustrate, in this specification, only a general outline of 7 contours and references is provided, and the specific architecture that does not optimize the measurement system and measurement method is not provided. Design, therefore, can not be implemented in the practical application of stray light measurement. In the international standard IS09358, the measurement of stray light is divided into qualitative 19832 5 1311197
* 1 · I \ I 量測與定量量測兩大類。在定性量測部分的做法，是在待 測光學系統的中心視場或是對角線視場位置擺放一個不 發光的物體’並分別計算光學系統就單純全白視場下與存 在不發光物體視場下在成像面上所接收到的訊號強度比 值來作為該待測系統的雜散光係數，這種量測方式相當於 模擬光學系統在「順光」條件下使用時所產生的雜散光。 另外一種方法歸類為定量量測’其做法是讓待測光學 系統分別在物方向的不同視場產生發光源，此時除了發光 _源之外，其餘視場均不發光，接著可以分別記錄下在成像 面上隨著物方向視場變化下的強度變化，這種測試方式可 以詳細得知不同視角的雜光係數，同時若與定性量測的方 法來比較，這種方法相當於測試光學系統在「逆光」條件 下使用時所產生的雜散光。 通常雜散光的量測要在物方向所預定的物空間中產 生一種圖樣，以分別提供定性量測與定量量測，如第 Φ圖及第1B圖所示之圖樣可提供取得雜散光係數，而如第 1C圖所示之圖樣則可提供取得在不同視角下的雜散光。 產生别述第1A圖至第1 c圖所示圖樣的方法，一般可 以區分為穿透式與反射式兩種。以反射式而言，國際規範 IS09358中提及在物空間使用移動平台，移動平台上設置 一個可以改變位置的白色標靶以用作模擬不同視場的光 源使用’其餘背景則均為黑色的，且反射式的光源通常使 用至少二個特定光源，分別以左右45度的角度照射至移 動平台上的標乾’並需要確認在被照射的標靶之照度分佈 6 19832 1311197 , i I ''' •具有相當高的均句性（一般要求照度均勾性在整個標把上 須達95%以上）。但這種做法會隨著物距與待測光學系統 視角的增力一發生其困難在於隨著標㈣尺寸辦 加，照明的難度也隨著增加，同時為了達到要求的照度均 句度’經常需要增加所使用的照明光源，而當照明光源數 ‘量增加時，對照明光源的調整與控制的難度也隨著增加， 因此造成時量測上的極大難度與高成本。 U穿透式而言，通常採用「光箱」來作為穿透式的光 攀源來源，這種方法針對測試物距與待測視角較小的量測需 求而言尚屬簡便，但同樣的，當待測視場變大時，所需: 面積的光箱成本也隨著增加，因此亦造成時量測上的高成 〇 待測試光學系統以光學鏡頭為例，若待測物距為一公 尺，同時該鏡頭的半視角最大為40度時，在此種條件下 f試區域的_對角線長度至少須達17公尺以上，對於 修k種尺寸不淪是反射式或是穿透式而言，光是在照明的要 求部份就相當不容易達到規範的要求。舉例來說，在穿透 =部份可以採用積分球來產生均勻光源’但是若要在17 公尺直徑的範圍内產生均勾的光源，則所使用的積分球尺 =至少半徑須達2公尺以上（以5%的積分球開口率做計 算），可想而知在此架構下單就使用積分球所需耗費的 本就相當昂貴。 由於前揭國際規範IS09358所提及利用移動圖樣形 成標靶以模擬不同視角的光源使用中，必須配置移動平台 19832 7 1311197 « J * 1 1 I ==系統所需空間與成本之限制。另就產生圖樣之 構而言，為顧及95%以上之照度均勾性，不可避 =必礙用到多個光源’不僅造成耗費配置空間、配 :成本，亦衍生照明光源的調整與控制的極大難度與高成 ^二就穿透式架構而S，軸針對照度均句性之達成較 過二但：使：先箱(如積分球)所需要的成本又實在 、於叩貝，大大地降低了實用價值。 :鑑於前述缺點，如何提供—種雜散光量測系統與方 ⑩法，以Μ匕針對物空間之光源與測試標乾的要求，實現大 幅降低光源成本、縮小配置空間、屏除配置移動平 效，進而克服先前技術所存在之問^ 待克服之課題。 艰乃成為目剛業界亟 【發明内容】 鑒於以上所述先前技術之缺點，本發明 於提供-種簡化系統架構之雜散光量測系統鱼方法、。卩 •於實ΐ:Γ之另一目的在於提供一種降低光源成本並易 於實現照度均勻性之雜散光量測系統與方法。 =明之再-目的在於提供—種縮小配置 散先夏測系統與方法。 ^ 發月之又目的在於提供—種無須配置移動平二 之雜散光量測系統與方法。 ° ，達成上揭目的及其它目的，本發明提供—種雜 括：屏幕^系統之雜散光量測，其包 屏幕係、配置於該待測光學系統之正前方；投影裝置， 19832 8 1311197 * i 係配置於該屏幕之正前方，用以投射光源與標乾至該屏 幕俾供該待測光學系統擷取成像；以及控制裝置，係至 少耦合至該待測光學系統’用以計算求得該待系 之雜散光。 示、元 、同時，為達成相同目的，本發明亦提供一種雜 測方法，係供制於待測光學純之雜散光量測，其包 ^於該待測光學系統之正前方配置—屏幕；於該屏幕之 ^方配置-投影裝置，以投射光源與躲至該屏幕，供 光：::了系統？取成像;以及輕合—控制裂置至該待測 予：、以计异求得該待測光學系統之雜散光。 ::之雜散光量測系統與方法中，該屏幕係可為一穿 該投影裝置與待測光學系統分別配置於該穿 透式屏幕之相對兩側，俾構成一 外，嗲屝篡…，早構&㈣透式之量測架構。此 風季射式屏幕，且該投影裝置與待測光 於該反射式屏幕之同一側，俾構成一種反 • 於一較佳實施例中，該屏幕係-白紙。 又 係可為一具有伸縮鏡頭之投影機，以供選 該伸縮鏡頭復可安裝一中-較佳實施例中’ 該投影機之影像對比，故二先二㈣ 使用高對比度之高價投影機易彌補所需之對比度，無須 該控制裝置除了截合至該待 該待測光學系統之雜散光以外尤子系統以计异求付 俾選擇性㈣整所㈣之掉 衫錢制裝置’ 铋靶圖樣、標靶區域大小、以及 19832 9 1311197 , I * I < ( 光原區預大j之其中至少一者，較佳地，該控制裝置係一 電腦，俾輕易地控制該投影裝置之投影變化。 、相較於習知技術，本發明所提供之雜散光量測系統與 方法主要利用投影I置投射光源與標乾，由於採用投景; 裝置同時兼具光源與標輕的作用，因此可大幅降低光源^ 成本、實現照度均勻性、並簡化系統架構。由此可知，本 發明已相對克服先前技術之缺失，實具高度之產業利用價 值。 ' _【實施方式】 ,以下兹配合圖式說明本創作之具體實施例，以使所屬 技術中具有通常知識者可輕易地瞭解本創作之技術特徵 與達成功效。 茗一實施你丨 /如第2圖所示’本發明提供一種雜散光量測系統卜 f供應用於待測光學系統2之雜散光量測，該雜散光量測 鲁系統1係包括：配置於該待測光學系統2正前方之屏幕 U、配置於該屏幕11正前方以投射光源與標乾之投影裝 置13、以及耦合至該待測光學系統2以計算求得雜散光 1控制裳置15。所述之待測光學系統2係以例如應用於 知相機之光學鏡頭為例，但絕非以此為限，舉凡存在因為 外界雜光導致成像品質不佳疑慮之光學系統，均屬本發明 所传應用量測雜散光之待測光學系統2。 '該屏幕11係配置於該待測光學系統2之正前方，用 則共投射光源與標革巴，俾供該待測光學系統2#頁取成像。 19832 10 1311197 • f * t r 於本實施例中，該屏^係為一穿透式屏幕，且該投影 裝置13與待測光學系統2分別配置於該屏幕u之相對兩 側’俾構成—種穿透式之量義構。此外，由於進行雜散 光量測時，係要求標乾上所發出的光源必須為各方向均勻 發光的光源，而一般白紙具有可穿透特性，且表面且有均 勾的微粒供反射光線，極適於在光源照射時期反射或是穿 透光的特性堤供接近各方向均勻發光的效果，因此該 11係可選用一白紙。 # 該投影裝置13係配置於該屏幕11之正前方，並且間 隔著屏幕11而與該待測光學系統2相對，用以投射光源 與標把至該屏幕n，俾供該待測光學系統2擷取成像。 ;本實把例中該技置1 3係為__具有伸縮鏡頭m 之投影機，以供選擇性的調整投影距離，亦即相當於調整 所投射標乾之區域大小。同時，由於一般投影機的影像對 比只達2_:1左右，對應用於雜散光量測之國際規範 鲁ISO㈣所要求的⑽G(hl以上而言稍嫌不因此可於 該伸縮鏡頭131上安震一中性遽光片（NDFiiter)i33，以 增加幻又衫機之影像對比，故可輕易彌補所需之對比度， 無須使用南對比度之馬價投影機。 該控制裝置15係輕合至該待測光學系統2，可搭配 一感測器151，用以根據該待測光學系統2所擷取成像之 成像面上中心位置的強詹鐵ϋ μ 罝刃强度支化，計算求得該待測光學系統 2之雜散光。於本實施例中，該控制裝置15係一電腦， 同時，除了麵合至該待測弁與彡 行巧九學系統2以計算求得該待測光 19832 11 1311197 學系統2之雜散光以外，復耦合至該投影裝置i3，俾選 擇性的調整所投影之標靶圖樣、標靶區域大小、以及光源 品預大j之其中至少—者，由於採用電腦實施該控制裝置 U，故可透過常見的套裴軟體而輕易地控制該投影裴置 W進行前述之投影變化。 、 相對於前揭量測系統，本發明亦提供一種雜散光量測 方法，同樣請配合參閱如第2圖所示，係包括：於待測光 學系統2之正前方配置一屏幕11;於該屏幕丨丨之正前方 配置一投影裝置13，以投射光源與標乾至該屏幕11，供 該待測光學系統2擷取成像；以及耦合一控制裝置15至 該待測光學系統2,以計算求得該待測光學系統2之雜散 光。 不論是本發明所提出之雜散光量測系統或方法中，針 對進行定性量測或定量量測之流程與運算法則並無特 異，茲進一步說明之。 首先，在在定性量測部分，分別控制投影裝置13產 生如圖第1A圖或第1B圖所示的圖樣，然後分別記錄待、則 學系統2之成像面上中心位置的強度變化，再利用式（〜） 來求出待測系統的雜散光係數（VGI或VGIB)。 VGI(orVGIB) =* 1 · I \ I Measurement and quantitative measurement are two major categories. In the qualitative measurement part, the non-illuminating object is placed in the central field of view or the diagonal field of view of the optical system to be tested' and the optical system is calculated separately. The ratio of the signal intensity received on the imaging surface in the field of view of the object is used as the stray light coefficient of the system under test. This measurement method is equivalent to the stray light generated by the analog optical system when used under "shun" conditions. . Another method is classified as quantitative measurement. The method is to let the optical system to be tested generate illumination sources in different fields of view in the object direction. At this time, except for the illumination source, the other fields of view do not emit light, and then can be separately recorded. This test method can know the stray light coefficient of different viewing angles in detail on the imaging surface with the change of the field of view in the object direction. At the same time, if compared with the qualitative measurement method, this method is equivalent to the test optics. Stray light generated when the system is used under "backlighting" conditions. Generally, the measurement of stray light is to produce a pattern in the object space predetermined in the object direction to provide qualitative measurement and quantitative measurement respectively, and the patterns shown in the Φ image and the first BD image can provide the stray light coefficient. Patterns as shown in Figure 1C provide stray light at different viewing angles. The method of generating the patterns shown in Figs. 1A to 1c can be generally classified into two types: transmissive and reflective. In terms of reflection, the international standard IS09358 mentions the use of a mobile platform in the object space. A white target that can change position is set on the mobile platform to use as a light source for simulating different fields of view. The rest of the background is black. And the reflective light source usually uses at least two specific light sources, respectively, to the target dry on the mobile platform at an angle of 45 degrees left and right respectively and needs to confirm the illumination distribution of the target being illuminated 6 19832 1311197, i I ''' • Has a fairly high uniformity (generally requires that the illuminance must be more than 95% on the entire standard). However, this method will have difficulty with the increase of the object distance and the angle of view of the optical system to be tested. The difficulty of the illumination increases with the size of the standard (4), and at the same time, in order to achieve the required illumination, the sentence is often It is necessary to increase the illumination source used, and as the number of illumination sources increases, the difficulty in adjusting and controlling the illumination source also increases, thereby causing great difficulty and high cost in measurement. For the U-transmission type, the "light box" is usually used as the source of the penetrating light source. This method is simple for measuring the object distance and the measurement range to be measured, but the same When the field of view to be measured becomes larger, it is required: the cost of the light box of the area is also increased, so that the optical system to be tested in the time measurement is taken as an example of the optical lens, if the object distance to be tested is One meter, and the half angle of view of the lens is up to 40 degrees. Under such conditions, the length of the _ diagonal of the test area must be at least 17 meters. It is not reflective for the size of the repair. In terms of penetrating, it is quite difficult to meet the requirements of the specification in the required part of the lighting. For example, in the penetration = part of the sphere can be used to produce a uniform source of light 'but to generate a uniform source of light within a range of 17 meters in diameter, the integral sphere used = at least 2 radii Above the ruler (calculated by 5% of the integral sphere opening ratio), it is conceivable that the cost of using the integrating sphere in this structure is quite expensive. Due to the use of moving patterns to form targets to simulate different angles of light source as mentioned in the previous International Code IS09358, it is necessary to configure the mobile platform 19832 7 1311197 « J * 1 1 I == The space and cost constraints required by the system. In addition, in terms of the structure of the pattern, in order to take into account that more than 95% of the illumination is uniform, it is inevitable that it will obstruct the use of multiple light sources', which not only causes the configuration space, the cost: the cost, but also the adjustment and control of the illumination source. Difficulty and high success ^ two on the transmissive architecture and S, the axis for the illuminance of the sentence to achieve more than two: But: the cost of the first box (such as the integral ball) is real, in the mussel, greatly reduced Practical value. In view of the above shortcomings, how to provide a stray light measurement system and a square 10 method to achieve a significant reduction in the cost of the light source, reduce the configuration space, and remove the configuration and move the effect, in response to the requirements of the light source and the test target of the object space. Further, the problem of the prior art is overcome. In view of the above-mentioned shortcomings of the prior art, the present invention provides a stray light measurement system fish method which simplifies the system architecture.于 • 实实ΐ: Another purpose of Γ is to provide a stray light measurement system and method that reduces the cost of the light source and is easy to achieve illuminance uniformity. = Mingzhi again - the purpose is to provide - a reduced configuration of the first summer system and method. ^ The purpose of the month is to provide a stray light measurement system and method that does not require the configuration of the mobile flat. °, to achieve the purpose of the above and other purposes, the present invention provides a variety of: the stray light measurement of the screen system, the package screen, is placed directly in front of the optical system to be tested; projection device, 19832 8 1311197 * The i is disposed directly in front of the screen for projecting the light source and the standard to the screen for imaging by the optical system to be tested; and the control device is coupled to the optical system to be tested at least for calculation The stray light to be tied. In order to achieve the same purpose, the present invention also provides a method for detecting noise, which is provided for measuring the optically pure stray light to be measured, and is disposed in front of the optical system to be tested. In the configuration of the screen - projection device to project the light source and hide to the screen, for light::: System? And taking the image; and controlling the splitting to the to-be-measured: obtaining the stray light of the optical system to be tested by the difference. In the stray light measurement system and method of the following, the screen can be disposed on the opposite sides of the penetrating screen respectively for the projection device and the optical system to be tested, and constitute an outer... Early construction & (4) through the measurement architecture. The wind screen emits a screen, and the projection device and the light to be measured are on the same side of the reflective screen, and constitute a reverse. In a preferred embodiment, the screen is a white paper. Also, it can be a projector with a telescopic lens for selecting the telescopic lens to be installed in a preferred embodiment - in the preferred embodiment, the image contrast of the projector, so the second and second (four) use high-contrast high-priced projectors To compensate for the required contrast, the control device does not need to be cut off to the stray light of the optical system to be tested, and the subsystem can be used to calculate the difference (4) of the whole (4) , the size of the target area, and at least one of the light source area pre-large j, preferably, the control device is a computer, and the projection change of the projection device is easily controlled Compared with the prior art, the stray light measurement system and method provided by the present invention mainly utilizes the projection I to set the projection light source and the standard stem, and because of the use of the projection; the device also has the function of the light source and the standard light, so The invention greatly reduces the cost of the light source, realizes uniformity of illumination, and simplifies the system architecture. It can be seen that the present invention has overcome the lack of prior art and has a high industrial utilization value. ' _ [Embodiment] The specific embodiments of the present invention are described in conjunction with the drawings, so that those skilled in the art can easily understand the technical features of the present invention and achieve the effect. The first implementation of the present invention / as shown in Figure 2 Providing a stray light measurement system for supplying a stray light measurement for the optical system 2 to be tested, the stray light measurement system 1 comprising: a screen U disposed in front of the optical system 2 to be tested, and configured on The screen 11 is directly forwardly projected by the projection light source and the projection device 13 and coupled to the optical system 2 to be tested to calculate the stray light 1 to control the skirt 15. The optical system 2 to be tested is applied, for example. The optical lens of the camera is taken as an example, but it is by no means limited thereto. The optical system having the problem of poor imaging quality due to external stray light is the optical system 2 to be tested for measuring stray light. 'The screen 11 is disposed directly in front of the optical system 2 to be tested, and the common projection light source and the standard bag are used for imaging the optical system 2# page. 19832 10 1311197 • f * tr in this implementation In the case, the ^ is a penetrating screen, and the projection device 13 and the optical system 2 to be tested are respectively disposed on opposite sides of the screen u, which constitute a transmissive quantity. In addition, due to the amount of stray light When measuring, it is required that the light source emitted on the standard dry must be a light source that uniformly emits light in all directions, while generally white paper has a penetrable property, and the surface has a hooked particle for reflecting light, which is very suitable for reflecting in the illumination period of the light source. Or the characteristic light penetrating light provides an effect of uniform illumination in all directions, so a blank paper can be selected for the 11 series. # The projection device 13 is disposed directly in front of the screen 11, and is spaced apart from the screen 11 The optical system 2 is opposite to project a light source and a target to the screen n for imaging by the optical system 2 to be tested. In the present example, the technique is set to 1 3 as a projector with a telescopic lens m for selectively adjusting the projection distance, that is, equivalent to adjusting the size of the projected stem. At the same time, since the image contrast of the general projector is only about 2_:1, it corresponds to the (10)G required by the international standard Lu (4) for stray light measurement (the above is not so obvious that it can be shocked on the telescopic lens 131). A neutral ray film (NDFiiter) i33, in order to increase the image contrast of the phantom and the shirt machine, it can easily compensate for the required contrast, without the need to use the South Contrast horse price projector. The control device 15 is lightly coupled to the waiting The optical measuring system 2 can be combined with a sensor 151 for calculating the strength of the strong Zhanyi ϋ μ 罝 edge of the imaging surface on the imaging surface of the optical system 2 to be measured. The stray light of the optical system 2. In the embodiment, the control device 15 is a computer, and at the same time, in addition to the face to be tested and the 彡行巧9学 system 2 to calculate the light to be measured 19382 11 1311197 In addition to the stray light of system 2, it is coupled to the projection device i3, and selectively adjusts the projected target pattern, the size of the target area, and at least the light source product J, which is implemented by a computer. Device U, so The projection device is easily controlled by the conventional software to perform the aforementioned projection changes. The present invention also provides a method for measuring the stray light relative to the front measurement system, which is also referred to as shown in FIG. The display includes: arranging a screen 11 directly in front of the optical system 2 to be tested; and arranging a projection device 13 directly in front of the screen to project a light source and a target to the screen 11 for the optical system to be tested 2 capturing the image; and coupling a control device 15 to the optical system 2 to be tested to calculate the stray light of the optical system 2 to be tested. Regardless of the stray light measurement system or method proposed by the present invention, The flow and algorithm for qualitative measurement or quantitative measurement are not specific, and further explanation is given. First, in the qualitative measurement portion, the projection device 13 is separately controlled to produce a pattern as shown in FIG. 1A or FIG. 1B. Then, separately record the intensity changes of the center position on the imaging surface of the system to be studied, and then use the formula (~) to find the stray light coefficient (VGI or VGIB) of the system to be tested. VGI(orVGIB) =
Black White xlOO% 式（一） 在定量量測部份，控制投影裝置13產生如第ic圖的 圖樣，然後分別記錄待測光學系統2之成像面上中心位署 19832 12 1311197 ' I 1 I t . 的強度變化，再利用式（二）來求出待測系統在不同視 的雜散光（GSF或GSFR)。 GSF(〇rGSFR) = jnt ensity_〇f_specification yjewangle or imageheight —tot(image—flux of source ~ x 1 〇〇% ......式(二) 由於前述定性量測或定量量測之計算公式係源自國 際規範IS09358’並非本發明所首創，應為所屬技術領域 中具有通常知識者所能理解並據以實施者，故不贅言詳述 之。而針對前述利用中性濾光片133來彌補以增加該投影 裝置ΐ影像對比的設計中，以採用投影機影像對比為Η 來計算，則所使用的中性濾光片規格ND可依式（三 出來。 1〇4 sx.io'. ......................................（三） 在實際應用上，只要事先確認中性濾光片133的穿透 φ率’並在最後做雜光計算時將中性濾光片133的規格帶入 式（一）或式（二），便可以在無法提升投影裝置13對比下 達到測試時對標靶影像對比的要求。 居二實施例 請參閱第3圖所示，本實施例與第一實施例之差異僅 在於投衫裝置之配置位置不同，其餘相關屏幕、待測光學 系統以及控制裝置之設計均相同，因此基於相同之設計與 變化例不再重複贅述，以下僅說明其相減，特此敘明、。 如第3圖所示，本發明提供一種雜散光量測系統3 ’ 19832 13 1311197 < « * ill 係供應用於待測光學系統2之雜散光量測，該雜散光量測 系統3係包括··配置於該待測光學系統2正前方之屏幕 31、配置於該屏幕31正前方以投射光源與標靶之投影裝 置33、以及耦合至該待測光學系統2以計算求得雜散光' 之控制裝置35。 月 於本實施例中，該屏幕31係為一反射式屏幕，且該 投影裝置33與待測光學系統2分別配置於該屏幕31之: 一侧，俾構成一種反射式之量測架構。該投影裝置33係 籲為一具有伸縮鏡頭331之投影機，以供選擇性的調整投影 距離，亦即相當於調整所投射標靶之區域大小。同時，= 可於該伸縮鏡頭331上安裝一中性濾光片（nd ,Black White xlOO% Formula (1) In the quantitative measurement section, the projection device 13 is controlled to generate a pattern as shown in the ic diagram, and then the center plane of the imaging surface of the optical system 2 to be tested is separately recorded. 19382 12 1311197 ' I 1 I t The intensity change, and then use equation (2) to find the stray light (GSF or GSFR) of the system under test in different views. GSF(〇rGSFR) = jnt ensity_〇f_specification yjewangle or imageheight —tot(image—flux of source ~ x 1 〇〇% ...... Equation (2) Calculation formula for qualitative or quantitative measurement The invention is based on the international specification IS09358', which is not the first of the present invention, and should be understood by those skilled in the art and implemented by those skilled in the art, so it is not described in detail. For the aforementioned use of the neutral filter 133 In the design to increase the contrast of the projection device, the contrast of the projector image is Η, and the neutral filter specification ND can be used according to the formula (three out. 1〇4 sx.io'. ................................ (3) In practical applications, as long as the prior confirmation The penetration rate φ of the filter 133 is taken and the specification of the neutral filter 133 is brought into the equation (1) or (2) when the stray light calculation is finally performed, so that the projection device 13 cannot be lifted. The requirements for the comparison of the target images at the time of the test are reached. The second embodiment is shown in FIG. 3, and the difference between this embodiment and the first embodiment is only in the shirting device. The configuration of the remaining screens, the optical system to be tested, and the control device are the same. Therefore, the same design and variations are not repeated here. The following is only a description of the subtraction, which is hereby stated. The present invention provides a stray light measurement system 3 ' 19832 13 1311197 < « * ill is supplied with a stray light measurement for the optical system 2 to be tested, and the stray light measurement system 3 includes A screen 31 directly in front of the optical system 2 to be tested, a projection device 33 disposed directly in front of the screen 31 to project a light source and a target, and a control device 35 coupled to the optical system 2 to be measured to calculate stray light '. In this embodiment, the screen 31 is a reflective screen, and the projection device 33 and the optical system 2 to be tested are respectively disposed on the screen 31: One side, the 俾 constitutes a reflective measurement architecture. The projection device 33 is called a projector having a telescopic lens 331 for selectively adjusting the projection distance, that is, equivalent to adjusting the size of the projected target. Meanwhile, the lens can be adjusted on the telescopic lens 331. Means a neutral density filter (nd,
Filter)333’以增加該投影機之影像對比，故可輕易彌補 所需之對比度，無須使用高對比度之高價投影機。該控制 裝置35係耦合至該待測光學系統2，可搭配一感測器 151，用以根據該待測光學系統2所擷取成像之成像面上 鲁中心位置的強度變化，計算求得該待測光學系統2之雜散 光，同時，復耦合至該投影裝置33，俾選擇性的調整所 投影之標靶圖樣、標靶區域大小、以及光源區預大小之其 中至少一者，由於採用電腦實施該控制裝置35，故可透、 過常見的套裝軟體而輕易地控制該投影裝置33進行前述 之投影變化。 由於本發明所提供之雜散光量測系統及方法中可利 用軟體達成用移動標靶以模擬不同視角的光源使用之變 化口此無須配置移動平台而縮小量測系統所需空間與成 19832 14 1311197 * < ::限:i:同時，因採用投影褒置同時兼具光源與標乾的 用，可大幅降低光源的成本、實現照度均句性、以 =統架構，並可適用於穿透式或反射式量測架構。由二 可知，本發明已相對克服先前技術之每 業利用價值。 只具向度之產 上述貝施例僅例示性說明本發明之原理及i 非用於限制本發^任何所屬技術領域 通= 申請專利範圍所列。叫保“圍’應如後心 【圖式簡單說明】 第1A圖及第ic圖分別顯示雜散 測與定量量測所需在物空間中的圖樣，欠中進^ ㈣顯示定性量測所需之圖樣，第 測所需之圖樣； W圖係顯不定量f 苐2圖係顯示本發明 系統架構示意圖；以及 第3圖係顯示本發明 系統架構示意圖。 雜散光量測系統之第-實施例 雜散光量測系統之第二實施例 【主要元件符號說明】 1 雜散光量測系統 11 屏幕 13 投影裝置 131 伸縮鏡頭 J9832 15 1311197 ..r (·' 133 中性濾光片 15 控制裝置 151 感測器 2 待測光學系統 3 雜散光量測系統 31 屏幕 33 投影裝置 331 伸縮鏡頭 • 333 中性濾光片 35 控制裝置 351 感測器 16 19832Filter) 333' to increase the image contrast of the projector, so it can easily compensate for the required contrast, without the need for high-contrast high-priced projectors. The control device 35 is coupled to the optical system 2 to be tested, and can be coupled with a sensor 151 for calculating the intensity change according to the position of the center of the image on the imaging surface captured by the optical system 2 to be tested. The stray light of the optical system 2 to be tested is simultaneously coupled to the projection device 33, and at least one of the target pattern, the size of the target area, and the pre-size of the light source area is selectively adjusted by the computer. By implementing the control device 35, the projection device 33 can be easily controlled to perform the aforementioned projection changes through a conventional software package. Since the stray light measurement system and method provided by the present invention can use the software to achieve the use of the mobile target to simulate the change of the light source used in different viewing angles, the space required for the measurement system can be reduced without configuring the mobile platform and become the 19832 14 1311197 * < :: Limit: i: At the same time, due to the use of the projection device and the combination of the light source and the standard dry, the cost of the light source can be greatly reduced, the illumination uniformity can be realized, the system can be used, and the penetration can be applied. Or reflective measurement architecture. It can be seen from the two that the present invention has overcome the per-use value of the prior art. The present invention is merely illustrative of the principles of the present invention and is not intended to limit the scope of the present invention. Called Bao "Wei" should be like the back heart [Simple description of the diagram] The 1A and ic diagrams respectively show the patterns in the object space required for the spurious and quantitative measurements, and the under-input ^ (4) shows the qualitative measurement The required pattern, the pattern required for the first measurement; the W system is not quantitative f 苐 2 shows the system architecture diagram of the present invention; and the third diagram shows the system architecture of the present invention. The first implementation of the stray light measurement system Second Embodiment of Stray Light Measurement System [Description of Main Components] 1 Stray Light Measurement System 11 Screen 13 Projection Device 131 Telescopic Lens J9832 15 1311197 ..r (·' 133 Neutral Filter 15 Control Device 151 Sensor 2 Optical system to be tested 3 Stray light measurement system 31 Screen 33 Projection device 331 Telescopic lens • 333 Neutral filter 35 Control device 351 Sensor 16 19832