199204 Λ 6 136 經濟部中央標準局员工消費合作社印製 五、發明説明（） 發明背景： 本發明傜將光學条統的光軸具體化成為一條可見的實線而來鑌取光軸 和待測平面間的角度關像。 相關技術： 液晶投射顯示器（liquid crystal projection display)的功能是將 視頻影像（video image)投射到螢幕(screen)上。螢幕型式的選擇可能和 觀看螢幕的觀眾所要求的光線分佈而有不同。螢幕可能是整面的白色發射 表面，不論從任何角度或任何距離，螢幕看起來都一樣亮；而且投射到螢 幕的影像亮度剛好可以淇足觀賞舒適的要求。 對某些的影像投射而言，則可能支重新改變光線的分佈以為部份觀眾 增加螢幕的亮度，而為另一部份觀眾則必須降低螢幕亮度。此種情形歸納 為螢幕增益（screen gain)的問題，因此，為造成視凳效果，螢幕型式的 選擇非常重要。 不同型式的螢幕可能導致光線分佈隨著特定觀眾的待殊觀看角度的不 同而改變。瞄準型(beaded),透鏡狀垂直式（lenticular vertical)或透 鏡狀水平式（lenticular horizontal)是幾値蜜幕型式的例子，且均具有 螢幕光線的分佈會隨著觀看角度（viewing angle)而改變的特性。此種螢 幕由於將光線均重新分佈，因此所提供的視覺效果和全白螢幕所提供的形 成對比，後者能維持相同的螢幕亮度而不隨觀看角度改變。 亮登幕的亮度水平（brightness level)和顔色座標（color coordinates) 可以由光學儀器如色度計 （chiromanieter) 來測量 。然而此種光學儀 器無法量測觀看角度，即光學儀器的物鏡組虛光軸和螢幕平面間的角度。 因此，測量一条列的不同觀看角度，並且奎出毎一觀看角度的檫準正規化 亮度（normalllllized brightness)以顯示出螢幕的亮度特性變得很迫切 需要。 發明概述： 本發明目的在於提出一種方法和装置，可應用於決定介於光學儀 器的虛光軸和受測平面間的方位角和仰角關傜。此方法和裝置包括了識別 位於物鏡和平面間的虛光軸，並順著虛光軸延伸出一條可見的直線.然後 量測此直線和待測平面間的方位角和仰角。最好在待測平面上安裝一具角 度指示器（angle indicator)以便能在直線接觸到角度指示器時讀取角度 謓數。而角度指示器最好分別有仰角和方位角刻度。 (請先閱讀背面之注意事項再塡寫本頁) 本紙張尺度通用中國國家標準(CNS) f 4規格(210X29·?公S:) 199204 Λ 6 Β 6 經濟部中央標準扃员工消费合作社印製 五、發明説明（） 為了讀取角度可依需要旋轉角度指示器直到直線接鐲到角度指示 器的仰角刻度附近後，便可依此讀取仰角讀數。同樣地，當旋轉角度指示 器來決定方位角時，即可謓取方位角刻度。 為了將可見的直線拉緊，可將直線的一端绋緊固定在角度指示器 的中央小孔，並且將直線的另一端穿過固定於目鏡上之透明圓板圓心之圓 孔而拉直。角度指示器也可藉由磁力固定在待測平面上，若有需要亦可藉 助一鉛錘線，以資平衡。 本發明可用於確定待測平面和任何具有物鏡的光學測量糸統，如 攝影機，色度計及光譜輻射儀等的虛光軸間的角度。 圖示部份簡要說明： 圖1是一個投射条統的上視圔，如前所述它描繪了螢幕和觀眾之間 的觀看角度關係。 圖2表示各種不同型式螢幕其觀看角度(橫座標)和螢幕增益(縱座 標)的關偽。 圖3顯示出傳钸的光學測量儀器。 圖4顯示出經由圖3中的傳統光學測量儀器之尋標目鏡（viewf-inder)所看到的景像。 圖5根據角度指示器配合本發明在不同的觀看角度應用時之透視 圖0 圖6是圖5的部份分解透視圔。顯示出如何將透明圓板固定在光 學測量儀器上。 圖7是本發明中的角度指示器之中央圓板正視圖。 圖8為一縱向橫截面圖，描述出圖7和圖6中由圓板延伸出的直 線。 圖9顯示在圖8的直線延伸後，透過圔1的尋標目鏡所看到的景 象，此時尚未進行調整以産生重叠。 圔10和圔9是相同型式的透視圖，但已經過調整步驟而産生重叠 現象。 圖11是本發明中具有圖7中所示中央圓板的角度指示器的正視平 面圖。 圖12是圖11中線段12-12的部份剖面圖。 __園113畏圖11中線段13-13的部份剖面圔。__ 本紙張尺度边用中國a家標準(CNS)甲4規格(210x297々^) ....... · . :.....< : ·····.·装.·.·.訂線 π (請先閱讀背面之注意事項再填寫本頁) 199204 Λ 6 136 經濟部中央標準局员工消费合作社印製 五、發明説明（） 圖14針對某一觀看角度,有關圖6的角度指示条統之放大透視圖。 圖15顯示出角度指示器被固定在圖5的螢幕之仰角側面圖，其中 螢幕和水平面成一傾斜角度，具使用了一條鉛錘線。 圖16針對白色擴散平面螢幕，以作圖方式來表示本發明所量得的 標準正規化亮度(縱座標)和仰角(橫座標)關偽。 圖17顯示出圖1中的視頻投射器（vider projector·),可用來在 螢幕上産生量測所需的影像。 發明詳細說明 圔1顯示出可在螢幕上（4)投射影像的影像投射器（2)。而每一 値觀賞投射在螢幕（4)上影像的觀眾分別具有各有不同的觀看角度，以 Qa，Qb，Qc »Qd，Qe 來代表。 圖2則比較各種不同型式螢幕，如白紙(平缓實線），瞄準型(虛 線），透鏡狀垂直式(點線)或透鏡狀水平式(陡峭實線)等，針對在圔1的中 心線（6)右邊時繪出螢幕增益和觀看角度的關偽。圖2是摘自Rudoff Kingslake所著的書"Optical System Design”，由 Academic Press公司 出販，1983年紐約。 吾人很容易了解到選擇白紙作為螢幕將導致在任何觀看角度其螢 幕增益或螢幕亮度幾乎完全相同。假若採用瞄準型螢幕，則螢幕的亮度在 觀看角度為零度時是觀看角度二十度時的4倍。因此，對瞄準型及透鏡狀 (垂直式和水平式)的螢幕而言，會幕的亮度在某一傾觀看角度和另一角度 相比時，變化非常明顯。透鏡狀螢幕可由玻璃或透明塑膠（transparent plastic)來製造。 圖3描述了傳統光學測量儀器（8)的原理圔，如minolta的色度 計CS-100。尋標目鏡(10)包括一反射稜鏡(12),焦平面(14),目鏡組合 (16)及目鏡組合(18)。而虛光軸(20)則穿透焦平面(14)的中心。光學儀器 (8)同時也擁有一組保護透鏡(22) (protective lens),物鏡(24)，反射 鏡(26),狹缝(slit)(28)及可穿透顔色濾波器（color filter) 32R (红) ,32G (綠）及32B (藍）的光纖(30)。光學儀器（8)同時也擁有三具偵測器 34R, 34G及34B,它們可同時讀出且提供經過濾波器後红色、綠色及藍色 光線的強度讀數。根據偵測器的數據，光學儀器（8)可以計算出在尋標目 鏡所看到影像的亮度柔顔色座標。 _鼸4弄示出诱渦MinoHa色庶計CS-100的聶檁目鏡（10)從透鏡組 本紙張尺度逍用中困國家樣準(CNS)甲4規格(210x297公釐） (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局员工消費合作社印製 五、發明説明（） 合（13)的右側所看到的焦平面（14)。其他不同藏裨的色度計及光學測量儀 器所看到的景像可能會有不同。 焦平面(14)上有一圓形或十字形的準星(36)。而虛光軸(20)會穿 透準星(36)的中心。因此，於透過物鏡(24)、反射鏡(26)及反射稜鏡(12) 來觀測物體影像時，當物髏影像在焦平面(14)的準星上形成時，即認為物 體與光學測量儀器（8)完成對準。此對準完成後，物體正好位於虛光軸 (20)的延長線上。因此，利用偵測器34R、34G、34B的測量即可完成。由 偵測器所偵測出的一些光學特性量測值，即可經由焦平面(14)上的LCD顯 示器(40)顯示出一些數字值(38)。 圖5顯示出一種適合用來測量虛光軸(20)和被觀察物體所在乎面 間角度的佈置法。在此例中，物體位於螢幕(42)上的某個區域，而光學測 量儀器（8)則出現在不同時間的不同位置。每値位置代表著觀看螢幕時不 同的角度，正如不同的觀眾不同的觀看角度般。雙箭號(44)指示出儀器(8) 在不同觀看角度進行測試時，可能被重新定位的方向。 圖5中的可見直線在儀器（8)的物鏡(24)(見圖3)和螢幕(42)之 間延伸出來。此直線可.以是細繩(string)、麻索(rope)、軟線(cord)、電 線、電親、細絲線或其它類似可以形成直線的材料。例如，尼龍線便可。 螢幕(42)以絞鏈方式連接到基座(48)上，因此可繞著绞鐽(50)自由旋轉。 螢幕(42)也可以藉任何熟知的方式固定在基座上。 角度指示器(52)固定在螢幕(42)上的方式最好是利用磁力式，如 在其背面加裝磁鐵(圖中未畫出），並使螢幕含有一靥磁鐵可吸附的材料。 此角度指示器(52)有仰角指示盤(54)及方位角指示盤(56)。方位角指示盤 相對於外圈的環形基座(58)是可旋轉的，但也可以用固定器(fastener) (60)加以固定。一中央圓板(62)則用於維持直線的尾端，而且是透明的。 圔6顯示出透明圓板(64)如何被固定在光學儀器（8)的物鏡(24) 上。如圖6及圖8所示的透明圓板(64)傺嵌於一金靥圓環(66)之中，此圓 環(66)具螺牙(68)可旋入光學測量儀器之物鏡組(24)的圓形輪緣(70)的最 外靥螺纹上。 中央圓板(62)(見圖5及圔7)有一条列的同心圓(72)。這些同心 圓(72)的中心是一値圓孔(74),可供直線(46)穿過，且在直線的尾端綁一 個結(76)(見圔8),如此可以維持圓孔(74)的圓錐形部份，並面向螢幕(42) 。然後將中央圓板(62)固定在螢幕(42)上，如圖5所示，當作角度指示器 (52)的中心。在角度指示器(52)上的磁鐵和螢慕(42)的磁性靥之間的磁力 象紙張尺度逍用中國國家標準(CNS)甲4規格(210X297公釐） f請先閲讀背面之注意卞項再填寫本頁} 裝' 訂- -線‘ Λ 6 _ η 6 經濟部屮央標準局员工消費合作社印製 五、發明説明（） 將有助於兩者互相固定。 透明圓板(64)有一中央小孔(78),而另一小孔(80)則和中央小孔 (78)有一距離。此另一小孔(80)可視為偏心圓孔。直線(46)則由中央小孔 (78)穿過，然後由另一偏心圓孔(80)穿回。此時將金屬圓環(66)用螺旋方 式繞著光學測量儀器的物鏡(24)鎖進螺紋。直線(46)因此可以被拉緊，而 中央圓板(62)和圓板均可由玻璃或透明塑膠製成。 圖9和圖10分別顯示出在嘗試將直線(46)和虛光軸(20)對準時， 透過尋標目鏡(10)所看到的景像。在光學測量儀器（8)(見圖5)的三腳基 座(82)之下是一傳統的調整盤(未畫出），它是可旋轉的，且可上下移動。 此調整盤是可加以調整的，以便讓圓形準星的圓形邊線和中央圓板(62)上 的某一値同心圓(72)相重合。因此，中央圓板(62)在焦平面上的影像可從 圖9的不重合位置移到圔10的重合位置。 圖11-13顯示出圖5的角度指示器，它擁有可在環形基座(58)内 旋轉的方位角指示盤(56)。將固定器(60)如螺絲鎖緊時，將使得其下方的 金屬盤(61)同時擠壓基座(58)和方位角指示盤(56),並使它們阽合在一起 。為了將轉柄穿過基座上孔洞的螺絲固定，可以利用螺纹嵌合進入基座上 的螺紋孔中，或者在基座的另一側安置螺帽。圓盤(56)和環形基座(58)間 的鎖緊最好在角度指示器和螢幕鎖緊前完成。 而方位角指示盤(56)的邊緣刻有一周的刻度而成為方位角標示 (84)。在環形基座(58)上有一參考標記(86),因此方位角相對於環形基座 (5δ)所旋轉的程度，可由諛取相對的方位角標示(84)來確定。必須了解的 是當基座(58)上有方位角標示，而圓盤(56)上有參考標記時也可達成相同 的效果。 仰角指示盤(54)和方位角圓盤(56)的延展面互相垂直，其上有仰 角標示(88),並割分出一値半圓角度檫示。圓盤(54)最好是値半圓形表面 ，而仰角標示(88)可以如圖所示的位於圓盤(54)的周邊上。而圓盤(56)最 好是圓形的。為了減輕重量，可將圓盤(54)和(56)的盤身挖孔(90),或以· 其它的結構減輕重量。 一般而言，經過組裝後的結構安排如圖14所示。圔15更進一步顯 示出螢幕(42)和地面成一傾斜角度。而一鉛錘線(92)則綁緊在環形基座 (58)的邊緣以便抵消角度指示盤(52)的重量。鉛錘(94)的重量大髏上和角 度指示盤(52)相等。鉛錘線(92)附帶鉛錘最好能配合螢幕(42)的所有角度 轉向使用，除非瑩幕(42)和地而平行.因為此時並不需抵消重力。 本紙張尺度逍用中國國家標準(CNS)甲4規格(210x297公龙） (請先閲讀背面之注意事項再填寫本頁) 裝· 線- 199204 Μ 經濟部屮央標準局S工消费合作社印製 五、發明説明（） 組裝和起始組合如下所述，参考謹11-13,將環形基座(5δ)上的 參考標記(86)和方位角指示圓盤(56)上的零度方位角標示對準。然後將環 形基座(58)和圓盤(56)用固定器(60)旋緊固定在一起。 參考圖6,將直線(46)穿過圓板(64)的中央小孔(73),再從另一 値小孔(80)穿回。金屬圓環(66)以螺旋方式旋入光學測量儀器（8)的物鏡 之周邊輪緣(70)上。 然後，參考圖8,將直線在小孔(74)内綁一値結(76),此時角度 指示器和螢幕以磁力貼合在一起如圖14所示，最好以鉛錘線(92)加以輔助 如圖15所示。 經過上述組裝後，光學測量儀器已被固定在距螢幕(42)—定距離 的位置上，然後藉由拉另一小孔把直線(46)拉緊。光學測量儀器（8)可以 放在任何待測的觀看角度，如圔5所示。 接著從尋標目鏡(10〉中找尋圓板(64)的中央小孔(78),調整三腳 基座(82)下的圓盤以使中央小孔的影像對準準星的中心。當圓形準星(36) 的圓形邊線和中央圓板(62)(如圖9, 10)中的一値同心圓(72)相重合時即 完成所諝對準。當對準π成時，直線(46)在圓板(64)的中央小孔(78)和中 央圓板(64)的圓孔(74)間成一直線，所以此時虛光軸和直線對準。 此時藉由鬆開固定器(60)並依需要轉動方位角指示盤(56)直到直 線(46)接觸到仰角指示盤(54),便可讀出方位角角度。在此接觸情況下， 參考標記(86)會指向方位角標示，代表指示盤(56)被旋轉的角度，此方位 角可由方位角標示(84)讀出；假若螢幕和地面垂此直，此時方位角是零度 仰角角度則可在直線(46)接觸到指示盤(54)的表面時，由仰角角 度標示(84)來讀出。 因此方位角和仰角讀數可以記錄下來，而且螢幕(42)上虛光軸和 螢幕的交叉位置點也應該記錄。因為中央圓板(64)是透明的，因此螢幕 (42)上的亮度的顔色座檫可由偵測器34R,34G,34B偵測並量得。 然後，依相反的程序將条統解體，且將光學測量条統放到不同的’ 位置以作為更進一步測量之用。 一白色螢幕的典型讀取值如圖16所示，其中亮度的測量是在許多 不同的觀看角度中進行，從仰角角度標示的零度角右邊開始測量，依照圔 形中的觀看角度來改變光學測量儀器（8)的位置。從這些測量中，可以看 到螢幕的亮度水平随著觀看角度從0度仰角標示增加而降低。此資料對利 用繪圖夾晷找在不同觀看角麼時不同螢幕的螢幕增益（如圖2)時非常有用 (請先閱讀背面之注意事項再填寫本頁) 裝- 訂_ 本紙張尺度逍用中B國家標準(CNS)甲4規格(210x297公世) 199204 Λ 6 Β6 五、發明說明（） ，因此對一給定的影像投射應用而言，可以選擇一合適的螢幕來使用。 顔色座檩也可由Minolta色度計CS-100來測量。為了瞭解顔色座 標可參考由 Gunter Wyszecki, W.S.Stiles等人合著的書”Color Science ，Concept and Methods. Quantitative Data and Formulae”二版，1982 年，由該書可得到解釋。 圖17是圖1中影射投射器（2)的原理圖解。它可以用來投射影像 到螢幕（4)上。投射器（2)包含一燈(96),此燈的光線可從後方的反射器 (98)反射回來，並且直接經過聚光鏡頭（100)而進入投射鏡（102)，投射 鏡（102)再把光線投射到螢幕（4)上。LCD面板（104)被安插在聚光鏡 (100)和投射鏡（102)之間，當作光閘門來選擇阻擋或允許光線從聚光鏡 (100)到達投射鏡（102)。液晶顯示器選擇由LCD驅動器（106)來推動以 配合所需的開或關，將所要的影像投射到螢幕（4)上°而燈(96)是由傳統 的電力供應器(108)控制。 以上所掲露之說明及圖示，僅為本發明實施例之―，當不能以此 限定本發明之實際賁施範圍，凡依以上說明及以下申請專利範圍所載之構 造特徴及功能上所作之各種變換，均應涵蓋於本發明之專利權範圍。 (請先閱讀背面之注意事項再構寫本頁) 裝- 訂_ 線· 經濟部中央標準局员工消費合作社印製199204 Λ 6 136 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention () Background of the invention: The present invention embodys the optical axis of the optical system into a visible solid line to extract the optical axis and the test The angle between the planes closes the image. Related technology: The function of a liquid crystal projection display is to project a video image onto a screen. The choice of screen type may differ from the light distribution required by the viewer watching the screen. The screen may be a white emitting surface on the entire surface. The screen looks as bright as it is from any angle or distance; and the brightness of the image projected on the screen is just enough to satisfy the requirements of comfortable viewing. For some image projections, it may be necessary to change the distribution of light to increase the brightness of the screen for some viewers, while reducing the brightness of the screen for some viewers. This situation can be summarized as a problem of screen gain. Therefore, in order to create a visual stool effect, the choice of screen type is very important. Different types of screens may cause the light distribution to change with the specific viewing angle of a particular audience. Aimed (beaded), lenticular vertical (lenticular vertical) or lenticular horizontal (lenticular horizontal) are examples of several types of honey screen types, and all have screen light distribution that will change with the viewing angle (viewing angle) Characteristics. This type of screen redistributes the light, so the visual effect provided is in contrast to that provided by the all-white screen. The latter can maintain the same screen brightness without changing with the viewing angle. Brightness levels and color coordinates can be measured by optical instruments such as colorimeters (chiromanieter). However, this type of optical instrument cannot measure the viewing angle, that is, the angle between the virtual axis of the objective lens group of the optical instrument and the screen plane. Therefore, it has become very urgent to measure a series of different viewing angles, and to quantify the normalized brightness of each viewing angle to show the brightness characteristics of the screen. Summary of the invention: The purpose of the present invention is to propose a method and device that can be applied to determine the azimuth and elevation angle between the virtual optical axis of an optical instrument and the plane under test. This method and device include identifying the virtual optical axis between the objective lens and the plane, and extending a visible straight line along the virtual optical axis. Then measuring the azimuth and elevation angle between the straight line and the plane to be measured. It is best to install an angle indicator on the plane to be measured so that the angle can be read when a straight line touches the angle indicator. The angle indicator preferably has elevation and azimuth scales. (Please read the precautions on the back before writing this page.) This paper is based on China National Standard (CNS) f 4 specifications (210X29 ·? S :) 199204 Λ 6 Β 6 Printed by the Central Standard of the Ministry of Economic Affairs and Employee Consumer Cooperative V. Description of the invention () In order to read the angle, the angle indicator can be rotated as required until the straight line is connected to the angle indicator near the elevation scale, and the elevation angle reading can be read accordingly. Similarly, when the angle indicator is rotated to determine the azimuth angle, the azimuth angle scale can be obtained. In order to tighten the visible straight line, one end of the straight line can be tightly fixed in the central small hole of the angle indicator, and the other end of the straight line can be straightened through the round hole at the center of the transparent circular plate fixed on the eyepiece. The angle indicator can also be fixed on the plane to be measured by magnetic force, and if necessary, a plumb wire can be used for balance. The invention can be used to determine the angle between the virtual light axis of the plane to be measured and any optical measurement system with an objective lens, such as a camera, a colorimeter, and a spectroradiometer. A brief description of the part of the diagram: Figure 1 is a projection of the upper eye, as described above, it depicts the relationship between the viewing angle of the screen and the audience. Figure 2 shows the relationship between the viewing angle (horizontal coordinate) and screen gain (vertical coordinate) of various types of screens. Figure 3 shows the optical measuring instrument for plutonium transmission. FIG. 4 shows the scene viewed through the viewf-inder of the conventional optical measuring instrument in FIG. 3. Fig. 5 is a perspective view when the angle indicator cooperates with the present invention at different viewing angles. Fig. 0 and Fig. 6 are partially exploded perspective views of Fig. 5. It shows how to fix the transparent circular plate to the optical measuring instrument. 7 is a front view of the central circular plate of the angle indicator in the present invention. Fig. 8 is a longitudinal cross-sectional view depicting the straight line extending from the circular plate in Figs. 7 and 6; Fig. 9 shows the scene seen through the index eyepiece of 圔 1 after the straight line of Fig. 8 has been extended. At this time, no adjustment has been made to cause overlap.圔 10 and 圔 9 are perspective views of the same type, but have undergone adjustment steps to produce overlap. Fig. 11 is a front plan view of the angle indicator having the central circular plate shown in Fig. 7 in the present invention. FIG. 12 is a partial cross-sectional view of the line segment 12-12 in FIG. 11. __ Garden 113 is a partial section of line 13-13 in Figure 11. __ This paper scale uses the Chinese a standard (CNS) A4 specifications (210x297々 ^)........... ≪: ········ .. · Booking line π (please read the precautions on the back before filling in this page) 199204 Λ 6 136 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs V. Description of invention () Figure 14 refers to a certain viewing angle An enlarged perspective view of the angle indication system. Figure 15 shows a side elevation view of the angle indicator fixed to the screen of Figure 5, where the screen is at an oblique angle to the horizontal and a plumb line is used. Fig. 16 is a graphical representation of a white diffused flat screen showing the normalized brightness (vertical coordinate) and elevation angle (horizontal coordinate) measured by the present invention. Figure 17 shows the video projector in Figure 1 (vider projector ·), which can be used to generate the image required for measurement on the screen. Detailed description of the invention 圔 1 shows an image projector (2) capable of projecting an image on a screen (4). Each viewer who views the image projected on the screen (4) has a different viewing angle, represented by Qa, Qb, Qc »Qd, Qe. Figure 2 compares different types of screens, such as white paper (smooth solid line), aiming type (dotted line), lenticular vertical type (dotted line) or lenticular horizontal type (steep solid line), etc., for the center line at 圔 1 (6) The screen gain and viewing angle are drawn on the right. Figure 2 is an excerpt from the book "Optical System Design" by Rudoff Kingslake, sold by Academic Press, New York, 1983. I easily understand that choosing white paper as the screen will result in almost any screen gain or screen brightness at any viewing angle Exactly the same. If the aiming screen is used, the brightness of the screen is 4 times that of the viewing angle of 20 degrees when the viewing angle is zero degrees. Therefore, for the aiming type and lenticular (vertical and horizontal) screens, The brightness of the tabernacle changes significantly when viewed from one viewing angle to another. The lenticular screen can be made of glass or transparent plastic. Figure 3 describes the principle of a traditional optical measuring instrument (8)圔, such as minolta's colorimeter CS-100. The indexing eyepiece (10) includes a reflecting mirror (12), focal plane (14), eyepiece assembly (16) and eyepiece assembly (18). The virtual optical axis ( 20) penetrates the center of the focal plane (14). The optical instrument (8) also has a set of protective lens (22) (protective lens), objective lens (24), reflector (26), slit (slit) ( 28) and penetrating color filter (color filte r) 32R (red), 32G (green) and 32B (blue) optical fibers (30). Optical instruments (8) also have three detectors 34R, 34G and 34B, which can be read out simultaneously and provide filtered The intensity readings of red, green and blue light behind the detector. According to the data of the detector, the optical instrument (8) can calculate the brightness and soft color coordinates of the image seen in the indexing eyepiece. MinoHa color gauge CS-100's Nie purlin eyepiece (10) from the lens set, paper size, easy to use, national standard (CNS), Grade 4 (210x297mm) (please read the precautions on the back before filling this page ) Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention () Focal plane (14) seen on the right side of (13). Views seen by other different colorimeters and optical measuring instruments The image may be different. On the focal plane (14) there is a round or cross-shaped front sight (36). The virtual light axis (20) will penetrate the center of the front sight (36). Therefore, through the objective lens (24), When observing the image of the object with the mirror (26) and the reflection lens (12), when the image of the skull is formed on the front sight of the focal plane (14), It is considered that the object is aligned with the optical measuring instrument (8). After this alignment is completed, the object is located exactly on the extension line of the virtual optical axis (20). Therefore, the measurement using the detectors 34R, 34G, 34B can be completed. Some optical characteristic measurement values detected by the detector can display some digital values (38) through the LCD display (40) on the focal plane (14). Figure 5 shows an arrangement method suitable for measuring the angle between the virtual optical axis (20) and the observed object. In this example, the object is located in a certain area on the screen (42), and the optical measuring instrument (8) appears at different positions at different times. Each position represents a different angle when viewing the screen, just as different viewers have different viewing angles. The double arrow (44) indicates the direction in which the instrument (8) may be repositioned when testing at different viewing angles. The visible straight line in Fig. 5 extends between the objective lens (24) (see Fig. 3) and the screen (42) of the instrument (8). This straight line may be a string, rope, cord, cord, cord, cord, filament, or other similar material that can form a straight line. For example, nylon thread is sufficient. The screen (42) is connected to the base (48) with a hinge, so it can rotate freely around the hinge (50). The screen (42) can also be fixed on the base by any well-known method. The way of fixing the angle indicator (52) on the screen (42) is preferably a magnetic type, such as attaching a magnet (not shown) to the back of the screen, and making the screen contain a material that can be absorbed by the magnet. The angle indicator (52) has an elevation indicator dial (54) and an azimuth indicator dial (56). The azimuth indicator disk is rotatable relative to the outer ring-shaped base (58), but can also be fixed with a fastener (60). A central circular plate (62) is used to maintain the straight end and is transparent. Fig. 6 shows how the transparent circular plate (64) is fixed on the objective lens (24) of the optical instrument (8). The transparent circular plate (64) as shown in FIGS. 6 and 8 is embedded in a gold-tall ring (66), and the ring (66) with screw teeth (68) can be screwed into the objective lens group of the optical measuring instrument (24) on the outermost thread of the round rim (70). The central circular plate (62) (see Figures 5 and 7) has a series of concentric circles (72). The center of these concentric circles (72) is a round hole (74) for the straight line (46) to pass through, and a knot (76) is tied to the end of the straight line (see Figure 8), so that the round hole can be maintained ( 74) The conical part, facing the screen (42). Then fix the central circular plate (62) on the screen (42), as shown in Figure 5, as the center of the angle indicator (52). The magnetic force between the magnet on the angle indicator (52) and the magnetic element of Phantom (42) is like the paper scale. Please use the Chinese National Standard (CNS) A 4 specifications (210X297 mm) f. Please read the note on the back first. Item and then fill out this page} Install 'Order- -Line' Λ 6 _ η 6 Printed by the Employee Consumer Cooperative of the Bureau of Standards, Ministry of Economic Affairs V. Invention description () will help the two to fix each other. The transparent circular plate (64) has a central small hole (78), and the other small hole (80) is at a distance from the central small hole (78). This other small hole (80) can be regarded as an eccentric round hole. The straight line (46) passes through the central small hole (78) and then passes back through another eccentric round hole (80). At this time, the metal ring (66) is screwed into the screw thread around the objective lens (24) of the optical measuring instrument. The straight line (46) can therefore be tightened, while both the central circular plate (62) and the circular plate can be made of glass or transparent plastic. 9 and 10 respectively show the scene seen through the target eyepiece (10) when trying to align the straight line (46) and the virtual light axis (20). Under the tripod base (82) of the optical measuring instrument (8) (see FIG. 5) is a traditional adjustment dial (not shown), which is rotatable and can be moved up and down. The adjustment dial can be adjusted so that the circular edge of the circular front sight coincides with a concentric circle (72) on the central circular plate (62). Therefore, the image of the central circular plate (62) on the focal plane can be moved from the non-coincident position of Fig. 9 to the coincident position of the sipe 10. Figures 11-13 show the angle indicator of Figure 5, which has an azimuth indicator dial (56) rotatable within a ring-shaped base (58). When the holder (60) is tightened like a screw, the metal plate (61) below it will simultaneously squeeze the base (58) and the azimuth indicator plate (56) and make them close together. In order to fix the screw through the hole in the base, you can use the thread to fit into the threaded hole on the base, or install a nut on the other side of the base. The locking between the disc (56) and the ring base (58) is preferably done before the angle indicator and the screen are locked. The edge of the azimuth indicator dial (56) is engraved with a week scale to become the azimuth indicator (84). There is a reference mark (86) on the ring base (58), so the degree of rotation of the azimuth angle relative to the ring base (5δ) can be determined by taking the relative azimuth index (84). It must be understood that the same effect can be achieved when there is an azimuth mark on the base (58) and a reference mark on the disc (56). The extension surfaces of the elevation indicator disk (54) and the azimuth disk (56) are perpendicular to each other, and there is an elevation angle indicator (88) on it, and a semi-circular angle display is cut. The disc (54) is preferably a semi-circular surface, and the elevation angle indicator (88) may be located on the periphery of the disc (54) as shown. The disc (56) is preferably circular. In order to reduce the weight, the disks (54) and (56) can be bored (90), or in other structures to reduce the weight. In general, the structural arrangement after assembly is shown in Figure 14. Di 15 further shows that the screen (42) is at an oblique angle to the ground. A plumb wire (92) is fastened to the edge of the ring-shaped base (58) to offset the weight of the angle indicating plate (52). The weight of the plumb (94) is equal to the angle indicator (52). The plumb line (92) with plumb line is best used with all angles of the screen (42), unless the screen (42) is parallel to the ground, because there is no need to counteract gravity. This paper scale is printed in Chinese National Standard (CNS) Grade 4 (210x297 male dragon) (please read the precautions on the back before filling in this page). Installation · Line-199204 Μ Printed by S Industry and Consumer Cooperatives, Bureau of Standards, Ministry of Economic Affairs V. Description of the invention () The assembly and starting combination are as follows, referring to 11-13, mark the reference mark (86) on the ring base (5δ) and the zero degree azimuth on the azimuth indicating disc (56) alignment. Then, the ring-shaped base (58) and the disc (56) are fastened together with the holder (60). Referring to Fig. 6, a straight line (46) is passed through the central small hole (73) of the circular plate (64), and then back through another small hole (80). The metal ring (66) is screwed into the peripheral rim (70) of the objective lens of the optical measuring instrument (8) in a spiral manner. Then, referring to Fig. 8, tie a straight line in a small hole (74) with a knot (76). At this time, the angle indicator and the screen are magnetically bonded together as shown in Fig. 14, preferably with a plumb line (92) ) To assist as shown in Figure 15. After the above assembly, the optical measuring instrument has been fixed at a fixed distance from the screen (42), and then the straight line (46) is tightened by pulling another small hole. The optical measuring instrument (8) can be placed at any viewing angle to be measured, as shown in Figure 5. Then look for the central hole (78) of the circular plate (64) from the indexing eyepiece (10), adjust the disc under the tripod base (82) so that the image of the central hole is aligned with the center of the sight. When the circular edge of the shape sight (36) coincides with a concentric circle (72) in the central circular plate (62) (as shown in Figures 9 and 10), the alignment is completed. When the alignment is π, the line is straight (46) A straight line is formed between the central small hole (78) of the circular plate (64) and the circular hole (74) of the central circular plate (64), so the virtual optical axis and the straight line are aligned at this time. Holder (60) and rotate the azimuth indicator dial (56) as needed until the straight line (46) contacts the elevation indicator dial (54), then the azimuth angle can be read. In this case, the reference mark (86) will The azimuth indicator indicates the angle at which the indicator dial (56) is rotated. This azimuth can be read by the azimuth indicator (84); if the screen and the ground are vertical, then the azimuth angle is zero degrees 46) When it touches the surface of the indicator disk (54), it is read by the elevation angle indicator (84). Therefore, the azimuth and elevation readings can be recorded, and the intersection of the virtual light axis and the screen on the screen (42) The set point should also be recorded. Because the central circular plate (64) is transparent, the color set of the brightness on the screen (42) can be detected and measured by the detectors 34R, 34G, 34B. Then, follow the reverse procedure Disassemble the bar and put the optical measuring bar in different positions for further measurement. The typical reading of a white screen is shown in Figure 16, where the brightness is measured at many different viewing angles The measurement is performed from the right side of the zero-degree angle marked by the elevation angle, and the position of the optical measuring instrument (8) is changed according to the viewing angle in the sigmoid. From these measurements, you can see that the brightness level of the screen changes from 0 with the viewing angle The elevation elevation mark increases and decreases. This information is very useful when using the drawing clip to find the screen gain of different screens at different viewing angles (see Figure 2) (please read the precautions on the back and fill in this page). _ This paper scale is used in the B National Standard (CNS) A4 specification (210x297) 199204 Λ 6 Β6 V. Description of invention (), so for a given image projection application, you can choose a suitable fluorescent The color coordinates can also be measured by the Minolta colorimeter CS-100. To understand the color coordinates, please refer to the book "Color Science, Concept and Methods. Quantitative Data and Formulae" co-authored by Gunter Wyszecki, WSStiles and others. Edition, 1982, which can be explained by the book. Figure 17 is a schematic illustration of the projection projector (2) in Figure 1. It can be used to project images onto the screen (4). The projector (2) contains a lamp ( 96), the light of this lamp can be reflected back from the rear reflector (98), and directly enter the projection lens (102) through the condenser lens (100), and the projection lens (102) projects the light onto the screen (4) . The LCD panel (104) is interposed between the condenser lens (100) and the projection lens (102), and serves as a light gate to selectively block or allow light from the condenser lens (100) to reach the projection lens (102). The liquid crystal display is driven by the LCD driver (106) to match the required on or off, and the desired image is projected onto the screen (4). The lamp (96) is controlled by the traditional power supply (108). The above descriptions and illustrations are only examples of the present invention-but should not be used to limit the actual scope of application of the present invention, where the construction features and functions contained in the above description and the following patent application scope are made All kinds of transformations should be covered by the patent scope of the present invention. (Please read the precautions on the back before constructing this page) Binding-Order _ Line · Printed by the Employees Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs