TWM544002U - Narrow angle dispersion piece head-up display device - Google Patents

Description

窄角擴散片抬頭顯示裝置 Narrow-angle diffuser head-up display device

本創作係有關於一種窄角擴散片抬頭顯示裝置，此尤指一種可提供最佳化視覺效果之抬頭顯示裝置，其利用微型凹面鏡的陣列構成一接近理想的窄角擴散片，藉此克服HUD抬頭顯示裝置的使用限制及亮度問題，以獲得最佳化視覺效果，進而提升行車安全者。 The present invention relates to a narrow-angle diffuser head-up display device, and more particularly to a head-up display device that provides an optimized visual effect, which utilizes an array of micro-concave mirrors to form a near-ideal narrow-angle diffusion sheet, thereby overcoming the HUD. Head-up display device usage restrictions and brightness issues to optimize visual effects, thereby improving driving safety.

按現今汽車上使用的抬頭顯示器技術是一種光學系統，通常是由一投射器和一疊像鏡所組成，其中該投射器是由一訊號光源、一投影鏡與其他光學元件所組成；該投射器的訊號光源，由一LCD液晶顯示器，或一投影機與一顯像屏幕或一擴散片等裝置所構成，從訊號光源發出光線，然后透過該投射器投射到儀表台或擋風玻璃上的該疊像鏡combiner(特製的半透明凹面鏡)，再由該疊像鏡顯示出文字或圖像與眼前的實景重疊，這種組合的抬頭顯示器稱做CHUD(combiner type HUD)；另一形式HUD，從訊號光源發出光線，然后透過該投射器投射到儀表台下方的凹面鏡，放大與反射到擋風玻璃，再由擋風玻璃顯示出文字或圖像與眼前的實景重疊，這種組合的抬頭顯示器稱做WHUD(windshield type HUD)。 The head-up display technology used in today's automobiles is an optical system, usually composed of a projector and a stack of mirrors, wherein the projector is composed of a signal source, a projection mirror and other optical components; The signal source of the device is composed of an LCD liquid crystal display, or a projector and a developing screen or a diffusing film, and emits light from the signal source, and then projects through the projector onto the instrument panel or the windshield. The stack mirror combiner (special semi-transparent concave mirror), and then the stack mirror displays text or images overlapping with the real scene in front of the eye. This combined head-up display is called CHUD (combiner type HUD); another form of HUD Light from the signal source, and then projected through the projector to the concave mirror under the instrument panel, magnified and reflected to the windshield, and then the windshield displays the text or image overlapping with the real scene in front of the eye. The display is called WHUD (windshield type HUD).

傳統WHUD(windshield type HUD)受到空間限制，一般虛像成像距離通常不超過距離駕駛者眼睛2.5米位置，但實際需求是不太夠的， 所以業界與車廠才會開出7米的目標；傳統WHUD所占用的體積已經非常大，不是所有車輛儀表台下方都有足夠的空間，所以目前只適用於大型車輛，而小型車輛所加裝的HUD都採用CHUD(combiner type HUD)，其虛像成像距離甚至更短。 The traditional WHUD (windshield type HUD) is limited by space. Generally, the virtual image imaging distance usually does not exceed 2.5 meters from the driver's eyes, but the actual demand is not enough. Therefore, the industry and the car factory will open a 7-meter target; the traditional WHUD takes up a very large volume, not all vehicles have enough space under the instrument panel, so it is currently only suitable for large vehicles, and small vehicles are installed. HUDs use CHUD (combiner type HUD), and their virtual image imaging distance is even shorter.

然而要達到遠距離虛像成像，理論上是要把凹面鏡放大倍數加大就可以達成，但實際上則會造成觀看者的暈眩，因此要避免暈眩的產生，如果將凹面鏡與實像螢幕(投影機的擴散片或TFT)構成的物距拉長，也是一個解決方法，但是傳統一體式的HUD因受限於儀表台下方的空間，使得拉長物距在執行上是有其困難之處，而且同樣尺寸的實像屏幕，當其拉長與凹面鏡的距離後，虛像距離會變遠，但虛像尺寸則沒有變大，相對視覺辨識度就會與距離成等比例的下降。 However, in order to achieve long-distance virtual image imaging, it is theoretically possible to increase the magnification of the concave mirror, but in reality it will cause the viewer to stun, so avoid the occurrence of dizziness, if the concave mirror and the real image screen (projection) The object distance formed by the diffuser or TFT of the machine is also a solution, but the traditional integrated HUD is limited by the space under the instrument panel, so that the elongated object distance has difficulty in execution, and For a real-image screen of the same size, when the distance between the virtual image and the concave mirror is extended, the virtual image distance will become longer, but the virtual image size will not become larger, and the relative visual recognition will decrease in proportion to the distance.

為此將實像螢幕(投影機擴散片或TFT)置於汽車頂棚與擋風玻璃的交界處，將反射凹面鏡置於儀表台下方，這樣是可以獲得接近傳統一體式WHUD的3倍左右物距距離(將原來18cm變成為50~70cm)，且儀表台下方所占用的體積比傳統HUD還小，而可以適用更多車款，但是要維持原來的視覺辨識度，最少需要等比例放大實像螢幕，然而放大TFT是件很困難的事，礙於高亮度背光的需求，TFT背後需要有一個光盃，才能提供足夠的亮度，這樣若把TFT從1.8吋放大到5.4吋，整體TFT體積將會在駕駛前方頂棚產生一個超大型的TFT怪物，而且在成本與美觀上都將不被接受。 To this end, the real image screen (projector diffuser or TFT) is placed at the junction of the car roof and the windshield, and the reflective concave mirror is placed under the instrument panel, so that the object distance can be obtained about 3 times that of the traditional integrated HUUD. (The original 18cm is changed to 50~70cm), and the volume under the instrument panel is smaller than the traditional HUD, and more models can be applied. However, to maintain the original visual recognition, at least the scaled-up real-image screen needs to be scaled up. However, it is very difficult to amplify the TFT. Due to the demand for high-brightness backlight, a light cup is needed behind the TFT to provide sufficient brightness. If the TFT is amplified from 1.8吋 to 5.4吋, the overall TFT volume will be Driving the front ceiling produces a very large TFT monster that will not be accepted in terms of cost and aesthetics.

如第一圖所示，投影機1(包括DLP投影機或雷射投影機)都需要使用到一顯像布幕或一擴散片作為成像平面來成像，而採用背投式投影的投影機，則是擺在一擴散片的背面，會使用到半透明穿透式擴散片； 投影機1的原理是將一個畫面利用掃描的方式，對被投射平面的每一個點投射出不同的顏色與亮度光點，透過這些光點組成一個畫面；假設成像平面不是布幕或擴散片，而是一鏡面反射鏡2的反射平面21，由於反射鏡入射角等於反射角，所以該投影機1投射到該鏡面反射鏡2的反射平面21的畫面，只有一點的光會反射到特定觀賞者的眼睛E裡，所以觀看者無論在哪個角度只能看到一個點光源，卻看不到一個完整的畫面。 As shown in the first figure, the projector 1 (including a DLP projector or a laser projector) needs to use a developing screen or a diffusing film as an imaging plane for imaging, and a projector with a rear projection type, Then placed on the back of a diffuser, a translucent penetrating diffuser is used; The principle of the projector 1 is to use a scanning method to project different color and brightness spots for each point of the projected plane, and form a picture through the light spots; if the imaging plane is not a curtain or a diffusion sheet, Rather, the reflection plane 21 of a specular mirror 2, since the incident angle of the mirror is equal to the angle of reflection, the projector 1 projects a picture of the reflection plane 21 of the specular mirror 2, and only a little light is reflected to a particular viewer. Eye E, so the viewer can only see a point source at any angle, but can't see a complete picture.

如第二圖所示，為了能看到一個完整的畫面，所以該投影機1使用時所投射的反射平面，不能是鏡面反射平面，必須為一霧面平面22，如此投射到該霧面平面22，才會把反射的光線打散掉，讓反射光分散到各個反射角度，而這個霧面平面22就叫做擴散片，光線打到一個平面，有部分光線會被吸收，剩下的光線才反射出來，若再加上反射光線擴散到每一個角度，每個角度都可以觀賞到整個畫面，但單一個角度所取得的光量就會變得很小，以致該投影機1播放時，通常要在比較昏暗的環境，比較好的投影布幕會含有增加反射的粉末，可減少光線的吸收，增加反射光的強度，但成本會增加許多，效果卻很有限，這種方式其實只是減少光線被吸收的比例，但對分散到各角度所產生的損失，則是無法補救的。 As shown in the second figure, in order to see a complete picture, the reflection plane projected by the projector 1 when used is not a specular reflection plane, and must be a matte plane 22, so as to be projected onto the matte plane. 22, the reflected light will be scattered, so that the reflected light is scattered to each reflection angle, and the matte surface 22 is called a diffuser, the light hits a plane, some of the light will be absorbed, and the remaining light is Reflected, if the reflected light is diffused to each angle, the entire picture can be seen at each angle, but the amount of light obtained at a single angle will become so small that the projector 1 usually has to be played. In a darker environment, a better projection screen will contain powder that increases reflection, which can reduce the absorption of light and increase the intensity of reflected light, but the cost will increase a lot, but the effect is very limited. This way, it only reduces the light. The proportion of absorption, but the loss caused by dispersion to various angles, cannot be remedied.

為了解決以上所存在的問題，業界不斷提出各種解決技術方案，相關的技術可參酌TW公開編號201636680、TW公開編號201624101、TW專利證號I367405、TW專利證號I449950、TW專利證號I506299、TW專利證號I479236、TW專利證號I485432、TW專利證號M455182、TW專利證號M328014等專利前案。 In order to solve the above problems, the industry has continuously proposed various solutions, and related technologies can be referred to TW Public No. 201636680, TW Public No. 201624101, TW Patent No. I367405, TW Patent No. I449950, TW Patent No. I506299, TW Patent No. I479236, TW Patent No. I485432, TW Patent No. M455182, TW Patent No. M328014 and other patents.

在前述的專利前案中，大多已能提升目前抬頭顯示裝置的使 用功能，但是仍存在著一些不易克服的瓶頸，例如： In the aforementioned patents, most of them have been able to improve the current head-up display device. Use features, but there are still some bottlenecks that are difficult to overcome, such as:

1.在前述已公開的專利案中，雖有些已運用到反射鏡陣列的技術，但由於其投射出的標準距離影像與實際的距離影像之間，仍有視覺上的落差問題存在，這種視覺上的落差現象，對有些駕駛人來說，卻很容易產生視覺上的暈眩感，因而會影響到行車的安全性。 1. In the above-mentioned published patent case, although some techniques have been applied to the mirror array, there is still a visual drop problem between the projected standard distance image and the actual distance image. The visual drop phenomenon, for some drivers, is easy to produce a visual dizziness, which will affect the safety of driving.

2.在已知的技術應運中，由於光源投射的距離需要有較長的空間與距離，這種限制往往不是每一款車型都能符合此一要求，導致被迫要以更昂貴的配備，來提高反射的效率與亮度，例如使用寬視角的投影模組(或投影機)，藉以克服HUD抬頭顯示裝置的使用限制，這種方式都只是在增加設備的成本浪費，而投射效率也低，這是目前抬頭顯示裝置普遍面臨的問題。 2. In the known technology, since the distance from the light source needs to have a long space and distance, this limitation is often not met by every model, resulting in being forced to use more expensive equipment. To improve the efficiency and brightness of the reflection, for example, using a wide viewing angle projection module (or projector), in order to overcome the use limit of the HUD head-up display device, this method is only to increase the cost of equipment, and the projection efficiency is low. This is a common problem currently faced by head-up display devices.

有鑑於以上習式的缺失，本案創作人歷經無數次研究改良後，終於完成本創作之窄角擴散片抬頭顯示裝置，即本案之創作目的係在提供一種最佳化視覺效果之抬頭顯示裝置，其利用微型凹面鏡陣列構成一接近理想的窄角擴散片，讓擴散的反射光範圍集中擴散到HUD的凹面鏡上，藉此克服HUD抬頭顯示裝置的使用限制及亮度的問題，以獲得最佳化視覺效果，進而提升行車安全者。 In view of the lack of the above formulas, the creator of this case has finally completed the creation of the narrow-angle diffuser head-up display device after several times of research and improvement, that is, the purpose of the present invention is to provide a head-up display device for optimizing visual effects. The micro-concave mirror array is used to form a near-ideal narrow-angle diffusion sheet, and the diffused reflected light range is concentratedly diffused onto the concave mirror of the HUD, thereby overcoming the use limitation and brightness of the HUD head-up display device to obtain optimized vision. The effect is to improve the safety of driving.

為達上述本案之創作目的，本創作之窄角擴散片抬頭顯示裝置，包含：一投影模組，其投射出一影像光源；一窄角擴散片，為一微型凹面鏡的陣列，該影像光源投向該 窄角擴散片；一反射鏡，該窄角擴散片反射該影像光源至該反射鏡；其特徵在於該投影模組位於該反射鏡同一側，而該窄角擴散片面向該投影模組與該反射鏡。 For the purpose of creating the above-mentioned case, the narrow-angle diffuser head-up display device of the present invention comprises: a projection module that projects an image light source; and a narrow-angle diffusion sheet, which is an array of micro concave mirrors, the image light source is directed The a narrow-angle diffusion sheet; a mirror, the narrow-angle diffusion sheet reflects the image light source to the mirror; wherein the projection module is located on the same side of the mirror, and the narrow-angle diffusion sheet faces the projection module and the mirror Reflector.

上述之微型凹面鏡的陣列成一長寬矩陣排列。 The array of micro-concave mirrors described above is arranged in a matrix of length and width.

上述之微型凹面鏡，為一直角錐型凹面鏡，該投影模組位於該反射鏡附近。 The micro concave mirror described above is a straight pyramid type concave mirror, and the projection module is located near the mirror.

上述之微型凹片鏡，為一圓球形凹面鏡，該投影模組位於該反射鏡附近。 The micro-concave mirror described above is a spherical concave mirror, and the projection module is located near the mirror.

上述之微型凹面鏡，為一弧形凹面鏡。 The above micro concave mirror is a curved concave mirror.

上述之微型凹面鏡的陣列，其中所有微型凹面鏡與該窄角擴散片成一斜角。 The above array of micro concave mirrors, wherein all of the micro concave mirrors are at an oblique angle to the narrow angle diffusion sheet.

上述之微型凹面鏡的陣列，其中所有微型凹面鏡各有不同的角度。 The array of micro-concave mirrors described above, wherein all of the micro-concave mirrors have different angles.

上述之窄角擴散片為一具有至少一個轉折之平面。 The narrow-angle diffusion sheet described above is a plane having at least one turn.

上述之反射鏡，為一凹面鏡。 The above mirror is a concave mirror.

上述之窄角擴散片，為一曲面。 The narrow-angle diffusion sheet described above is a curved surface.

本創作之特點，其主要利用微型凹面鏡的陣列，提供最理想的窄角擴散片，讓擴散的反射光範圍以能覆蓋到HUD的凹面鏡為基礎，而不需要做多餘的浪費，來使用寬視角的投影模組(或投影機)，藉此克服HUD抬頭顯示裝置的使用限制，而本創作這種理想的窄角擴散片，就是一種利用微型凹面鏡陣列所構成之反射式擴散片，透過本創作可以讓DLP的成像到 HUD凹面鏡的亮度提升數十倍，甚至到達百倍，藉此有效解決投影機HUD的亮度問題，提供最佳化視覺效果之抬頭顯示裝置，進而提升行車安全者。 The feature of this creation is that it mainly uses an array of miniature concave mirrors to provide the most ideal narrow-angle diffuser, so that the diffused reflected light range is based on a concave mirror that can cover the HUD without unnecessary waste to use a wide viewing angle. The projection module (or projector) overcomes the limitation of the use of the HUD head-up display device, and the ideal narrow-angle diffusion sheet of the present invention is a reflective diffusion sheet formed by using a micro concave mirror array. Can make DLP imaged to The brightness of the HUD concave mirror is increased by tens of times, even up to 100 times, thereby effectively solving the brightness problem of the projector HUD, providing a head-up display device for optimizing visual effects, thereby improving driving safety.

〔習知〕 [study]

1‧‧‧投影機 1‧‧‧Projector

2‧‧‧鏡面反射鏡 2‧‧‧specular mirror

21‧‧‧反射平面 21‧‧‧reflection plane

22‧‧‧霧面平面 22‧‧‧Mist surface

E‧‧‧眼睛 E‧‧‧ eyes

〔本創作〕 [this creation]

3‧‧‧投影模組 3‧‧‧Projection Module

4‧‧‧窄角擴散片 4‧‧‧Narrow-angle diffuser

41‧‧‧直角錐型凹面鏡 41‧‧‧Rectangular Conical Concave Mirror

42‧‧‧圓球形凹面鏡 42‧‧‧Spherical concave mirror

43‧‧‧弧形凹面鏡 43‧‧‧ curved concave mirror

44‧‧‧微型凹面鏡 44‧‧‧ miniature concave mirror

5‧‧‧反射鏡 5‧‧‧Mirror

6‧‧‧虛像 6‧‧‧virtual image

61‧‧‧符號箭頭 61‧‧‧ symbol arrow

62‧‧‧文字 62‧‧‧ text

D‧‧‧反射範圍 D‧‧‧reflection range

L‧‧‧影像光源 L‧‧‧ image source

θ‧‧‧斜角 Θ‧‧‧bevel

第一圖，為習知投影裝置實施示意圖。 The first figure is a schematic diagram of a conventional projection device.

第二圖，為習知投影裝置的另一實施示意圖。 The second figure is another schematic diagram of a conventional projection device.

第三圖，為本創作之第一實施例示意圖。 The third figure is a schematic diagram of the first embodiment of the creation.

第四圖，為本創作之第二實施例示意圖。 The fourth figure is a schematic diagram of a second embodiment of the present invention.

第四-1圖，為本創作之第二實施例局部放大示意圖。 Figure 4-1 is a partially enlarged schematic view of the second embodiment of the creation.

第五圖，為本創作之第三實施例示例意圖。 The fifth figure is an exemplary intent of the third embodiment of the present creation.

第五-1圖，為本創作之第三實施例局部放大示意圖。 Figure 5-1 is a partially enlarged schematic view of the third embodiment of the creation.

第六圖，為本創作之第四實施例示例意圖。 The sixth figure is an exemplary intent of the fourth embodiment of the creation.

第六-1圖，為本創作之第四實施例局部放大示意圖。 Figure 6-1 is a partially enlarged schematic view of the fourth embodiment of the present invention.

第七圖，為本創作之第五實施例示例意圖。 The seventh figure is an exemplary intent of the fifth embodiment of the present creation.

第八圖，為本創作之第六實施例示例意圖。 The eighth figure is an exemplary intent of the sixth embodiment of the present invention.

請參閱第三圖所示者，為本創作之窄角擴散片抬頭顯示裝置的第一實施例，包含：一投影模組3，係投射出一影像光源L，該投影模組3為一數位光處理裝置(Digital Light Processing，縮寫：DLP)投影機，是一項使用在投影儀和背投電視中的顯像技術；一窄角擴散片4，為一微型凹面鏡的陣列所構成之窄角擴散片，該投影模組3的影像光源L投向該窄角擴散片4； 一反射鏡5，該窄角擴散片4反射該影像光源L至該反射鏡5，該反射鏡5為一凹面鏡；其特徵在於該投影模組3位於該反射鏡5同一側，而該窄角擴散片4面向該投影模組3與該反射鏡5。 Referring to the third embodiment, the first embodiment of the narrow-angle diffuser head-up display device of the present invention comprises: a projection module 3, which projects an image light source L, and the projection module 3 is a digital position. A Light Processing (DLP) projector is a development technology used in projectors and rear projection televisions; a narrow-angle diffusion sheet 4 is a narrow angle formed by an array of miniature concave mirrors. a diffusion sheet, the image light source L of the projection module 3 is directed to the narrow-angle diffusion sheet 4; a mirror 5, the narrow-angle diffuser 4 reflects the image light source L to the mirror 5, the mirror 5 is a concave mirror; and the projection module 3 is located on the same side of the mirror 5, and the narrow angle The diffusion sheet 4 faces the projection module 3 and the mirror 5.

本創作之窄角擴散片4其反射該投影模組3的影像光源L，剛好只投射到該反射鏡5的範圍上，如此可獲得最佳的投射效率，因為投射面積如太大，投射到該反射鏡5之外的反射光線都是浪費的；而一般抬頭顯示裝置可能在大太陽下使用，因而其所需要的亮度極高，這對該投影模組3的亮度可以說是一大挑戰，故而要充分地使用該投影模組3所輸出的光量，以減少浪費是非常重要的課題，而這個課題主要的關鍵在於該窄角擴散片4的設計，一個理想的窄角擴散片4最好能對光線反射率達到100%，而且反射的影像光源L又能剛好覆蓋到該抬頭顯示裝置的反射鏡5，卻又沒有超出，因此越接近理想的窄角擴散片4，所產生的效益就越高。 The narrow-angle diffusion sheet 4 of the present invention reflects the image light source L of the projection module 3, and only projects onto the range of the mirror 5, so that the best projection efficiency can be obtained, because the projection area is too large, and the projection is The reflected light outside the mirror 5 is wasteful; and the general head-up display device may be used under the sun, so the brightness required is extremely high, which is a big challenge to the brightness of the projection module 3. Therefore, it is very important to fully use the amount of light output by the projection module 3 to reduce waste. The main key of this problem lies in the design of the narrow-angle diffusion sheet 4, and an ideal narrow-angle diffusion sheet 4 is the most It is good to achieve a light reflectance of 100%, and the reflected image light source L can just cover the mirror 5 of the head-up display device without exceeding it, so the closer to the ideal narrow-angle diffusion sheet 4, the benefit is produced. The higher.

上述之窄角擴散片4，其微型凹面鏡的陣列，是利用數量眾多的微型凹面鏡構成一長寬矩陣排列，也就說要形成一個矩形排列的陣列，每一個微型凹面鏡集中反射到該反射鏡5上，這種情況下對該反射鏡5而言，每一個微型凹面鏡就代表顯示屏幕上的一個像素(pixel)，所以微型凹面鏡的數量就代表螢幕解析度的上限，例如長寬各為480 x 240表示總共有115,200個微型凹面鏡所構成之陣列，也就限制了成像的最高解析度，因此即使該投影模組3原始的解析再高都是沒有用的，關鍵還是在於該窄角擴散片4其微型凹面鏡數量的多寡及其投射效率。 The above-mentioned narrow-angle diffusion sheet 4, the array of micro-concave mirrors, is formed by a large number of micro concave mirrors to form a long-width matrix arrangement, that is, an array of rectangular arrays is formed, and each micro-concave mirror is collectively reflected to the mirror 5 In this case, in the case of the mirror 5, each micro concave mirror represents a pixel on the display screen, so the number of micro concave mirrors represents the upper limit of the screen resolution, for example, 480 x each length and width. 240 indicates that there are a total of 115,200 micro concave mirrors, which limits the highest resolution of imaging. Therefore, even if the original resolution of the projection module 3 is not high, the key lies in the narrow-angle diffusion sheet 4. The number of miniature concave mirrors and their projection efficiency.

上述之窄角擴散片4，為一微型凹面鏡的陣列所構成之窄角 擴散片，其特徵在於該投影模組位3於該反射鏡5附近，它的優點是該窄角擴散片4可以比較光亮，不需要太霧面，這樣可以減少光線的吸收率，藉以增加反射率。 The above-mentioned narrow-angle diffusion sheet 4 is a narrow angle formed by an array of micro concave mirrors The diffusion sheet is characterized in that the projection module is located in the vicinity of the mirror 5. The advantage is that the narrow-angle diffusion sheet 4 can be relatively bright and does not need to be too matte, thereby reducing the absorption rate of light, thereby increasing the reflection. rate.

如第四圖、第四-1圖所示，為本創作之窄角擴散片抬頭顯示裝置的第二實施例，該窄角擴散片4為一微型凹面鏡的陣列所構成之窄角擴散片，其特徵在於該投影模組位3於該反射鏡5附近，其中該微型凹面鏡為一直角錐型凹面鏡41，則該微型凹面鏡的陣列為一直角錐形凹面鏡41陣列，利用該直角錐形凹面鏡41直角特性中入射線與反射線平行的原理，該直角錐型凹面鏡41若為完全亮面時，其反射光線幾乎全反射到入射光的光源點上，但若該直角錐型凹面鏡41稍帶霧面，則其反射光線會在入射光的光源點附近形成一個特定範圍的反射面，該反射鏡5只要在這個反射面的反射範圍D內，即可以接收到反射擴散光。 As shown in FIG. 4 and FIG. 4-1, a second embodiment of the narrow-angle diffuser head-up display device of the present invention is a narrow-angle diffusion sheet formed by an array of micro-concave mirrors. The projection module is located in the vicinity of the mirror 5, wherein the micro concave mirror is a conical concave concave mirror 41, and the array of the micro concave mirror is an array of conical concave concave mirrors 41, and the right angle conical mirror 41 is used. The principle that the middle entrance ray is parallel to the reflection line, if the right-angle tapered concave mirror 41 is completely bright, the reflected light is almost totally reflected to the point of the incident light source, but if the right-angle tapered concave mirror 41 is slightly matte, Then, the reflected light forms a specific range of reflecting surface near the point of the incident light source, and the reflecting mirror 5 can receive the reflected diffused light as long as it is within the reflecting range D of the reflecting surface.

如第五圖、第五-1圖所示，為本創作之窄角擴散片抬頭顯示裝置的第三實施例，該窄角擴散片4為一微型凹面鏡的陣列所構成之窄角擴散片，其特徵在於該投影模組位3於該反射鏡5附近，其中該微型凹面鏡為一圓球形凹面鏡42，則該微型凹面鏡的陣列為一圓球形凹面鏡42陣列，該圓球形凹面鏡42為一微霧凹面鏡時，利用該透明的圓球形凹面鏡42其反射特性中入射線與反射線平行的原理，該圓球形凹面鏡42若為完全亮面時，其反射光線幾乎全反射到入射光的光源點上，但若該圓球形凹面鏡42稍帶霧面，則其反射光線會在入射光的光源點附近形成一個特定範圍的反射面，該反射鏡5只要在這個反射面的反射範圍D內，即可以接收到反射擴散光。 As shown in FIG. 5 and FIG. 5-1, a third embodiment of the narrow-angle diffuser head-up display device of the present invention is a narrow-angle diffusion sheet formed by an array of micro-concave mirrors. The projection module is located in the vicinity of the mirror 5. The micro concave mirror is a spherical concave mirror 42. The array of the micro concave mirror is an array of spherical concave mirrors 42. The spherical concave mirror 42 is a micro-fog concave mirror. The principle that the transparent spherical concave mirror 42 has a reflection characteristic in which the incident ray is parallel to the reflection line, and if the spherical concave mirror 42 is completely bright, the reflected light is almost completely reflected to the light source point of the incident light, but The spherical concave mirror 42 has a slightly matte surface, and the reflected light forms a specific range of reflection surface near the light source point of the incident light. The mirror 5 can receive the reflection as long as it is within the reflection range D of the reflective surface. Diffused light.

如第六圖、第六-1圖所示，為本創作之窄角擴散片抬頭顯示 裝置的第四實施例，該窄角擴散片4為一微型凹面鏡的陣列所構成之窄角擴散片，其中該微型凹面鏡為一弧形凹面鏡43，則該微型凹面鏡陣列為一弧形凹面鏡43陣列，該弧形凹面鏡43陣列是利用該弧形凹面鏡43聚光原理，將每個弧形凹面鏡43設計為各有不同的角度，只要投射距離超過該弧形凹面鏡43的聚光點，光線反而會散開，只要該投影模組3的光源、該窄角擴散片4與該反射鏡5的位置都已經確定，則該窄角擴散片4上的每個弧形凹面鏡43的擺放角度與弧形半徑都可以經過精密計算，讓每個弧形凹面鏡43反射的光線都大約覆蓋該反射鏡5，以達到最有效的光源利用，該弧形凹面鏡陣列的每個弧形凹面鏡43都可以打亮到反射率接近100%的境界，所以整個投影模組3的光線利用率幾乎可以超過90%，比廣角擴散片的光線利用率只有個位數超過數十倍的效能，因此本創作之窄角擴散片抬頭顯示裝置，是效能最高的投影機擴散片。 As shown in the sixth and sixth figures, the narrow-angle diffuser head-up display of the creation is shown. In a fourth embodiment of the apparatus, the narrow-angle diffusion sheet 4 is a narrow-angle diffusion sheet formed by an array of micro concave mirrors, wherein the micro concave mirror is an arc-shaped concave mirror 43, and the micro concave mirror array is an array of curved concave mirrors 43. The arc-shaped concave mirror 43 array utilizes the principle of concentrating the curved concave mirror 43 to design each curved concave mirror 43 to have different angles. As long as the projection distance exceeds the condensing point of the curved concave mirror 43, the light will instead Dispersing, as long as the light source of the projection module 3, the position of the narrow-angle diffusion sheet 4 and the mirror 5 have been determined, the angle and curvature of each of the curved concave mirrors 43 on the narrow-angle diffusion sheet 4 The radii can be precisely calculated so that the light reflected by each of the curved concave mirrors 43 covers the mirror 5 to achieve the most efficient light source utilization. Each curved concave mirror 43 of the curved concave mirror array can be illuminated to The reflectivity is close to 100%, so the light utilization rate of the entire projection module 3 can be more than 90%, and the light utilization rate of the wide-angle diffusion sheet is only a single digit more than tens of times, so the original The narrow-angle diffusing sheet head-up display apparatus, the highest performance projector diffusion sheet.

上述之微型凹面鏡為一弧形凹面鏡43，由該弧形凹面鏡43所構成的陣列，其優點甚至可以讓鏡面反射時光線吸收率降到最低；此外，另一個優點是限制反射光線擴散的範圍，讓反射光線充分的集中投射在該反射鏡5上，尤其是微型凹面鏡為一弧形凹面鏡43，由該弧形凹鏡43所構成的陣列，其擴散範圍可以約略等於該反射鏡5的範圍，讓該投影模組3輸出的影像光源L，可以達到的充分利用。 The above-mentioned micro concave mirror is an arc-shaped concave mirror 43. The array formed by the curved concave mirror 43 has the advantage that the light absorption rate can be minimized even when the specular reflection is performed; in addition, another advantage is that the range of the reflected light diffusion is limited. A sufficient concentration of reflected light is projected onto the mirror 5, and in particular, the micro concave mirror is an arc-shaped concave mirror 43. The array of the curved concave mirrors 43 may have a diffusion range approximately equal to the range of the mirror 5. The image light source L output by the projection module 3 can be fully utilized.

在AR HUD(augmented reality HUD)虛像需要與地面盡量平行貼合，使導航箭頭虛像可以貼在前方道路上，而一般實像平面，如TFT或傳統投影機擴散片，垂直於該平面的亮度最大，與垂直線角度越大亮度就越低，虛像與駕駛視線不垂直將會犧牲影像亮度；如第七圖所示，為本創 作之窄角擴散片抬頭顯示裝置的第五實施例，其中該微型凹面鏡44的陣列中所有微型凹面鏡44與該窄角擴散片4成一斜角θ，藉以使擴散片與HUD的光軸形成θ+a的角度(a表示角度的設定差值)，藉此讓HUD的虛像與駕駛視角成θ+a的角度，使之更接近與地面平行貼合，而達到虛像與實像契合的效果。 In the AR HUD (augmented reality HUD) virtual image needs to be as close as possible to the ground, so that the virtual image of the navigation arrow can be attached to the road ahead, while the general real image plane, such as TFT or traditional projector diffuser, has the highest brightness perpendicular to the plane. The higher the angle with the vertical line, the lower the brightness, and the virtual image and the driving line of sight are not perpendicular to the image brightness; as shown in the seventh figure, the original A fifth embodiment of the narrow-angle diffuser head-up display device, wherein all of the micro-concave mirrors 44 in the array of micro-concave mirrors 44 are at an oblique angle θ with the narrow-angle diffusion sheet 4, whereby the diffusion sheet forms an angle θ with the optical axis of the HUD. The angle of +a (a indicates the difference of the angle setting), so that the virtual image of the HUD and the driving angle of view are at an angle of θ+a, so that it is closer to the parallel with the ground, and the effect of the virtual image and the real image is achieved.

在AR HUD(augmented reality HUD)虛像需要與地面盡量平行貼合，導航箭頭虛像可以貼在前方道路上，但一般資訊仍以盡量垂直於駕駛視角比較容易閱讀的區域，一個理想的HUD最好根據不同應用，具有不同顯示角度的虛像；第八圖所示，為本創作之窄角擴散片抬頭顯示裝置的第六實施例，其中該窄角擴散片4為一曲面或一具有轉折之平面，可以讓影像產生轉折，讓虛像6成像成為立體，該窄角擴散片抬頭顯示裝置的顯示內容，包括符號箭頭61與文字62，該符號箭頭61需要盡量與地面水平平行，影像必須比較趨於水平，但該文字62仍然以垂直比較容易閱讀，所以文字部分盡量垂直。 In the AR HUD (augmented reality HUD) virtual image needs to be parallel with the ground as much as possible, the navigation arrow virtual image can be attached to the road ahead, but the general information is still as easy as possible perpendicular to the driving angle of view, an ideal HUD is best based on Different applications, virtual images with different display angles; the eighth figure shows a sixth embodiment of the narrow-angle diffuser head-up display device of the present invention, wherein the narrow-angle diffusion sheet 4 is a curved surface or a plane having a turning surface. The image can be turned into a corner, and the virtual image 6 is imaged into a stereoscopic image. The narrow-angle diffuser heads up the display content of the display device, including the symbol arrow 61 and the text 62. The symbol arrow 61 needs to be parallel to the ground level as much as possible, and the image must be relatively horizontal. , but the text 62 is still easier to read vertically, so the text portion is as vertical as possible.

本創作之窄角擴散片抬頭顯示裝置，藉由以上各實施例的實施，利用該窄角擴散片4的微型凹面鏡的陣列，提供最理想的窄角擴散片4，讓擴散的反射光範圍約略能覆蓋到HUD的凹面鏡即可，而不需要做多餘的浪費來使用寬視角的投影模組(或投影機)，藉此克服HUD抬頭顯示裝置的使用限制，而本創作這種理想的窄角擴散片4，就是一種利用微型凹面鏡的陣列所構成之反射式擴散片，透過本創作可以讓投影機的成像到HUD凹面鏡的亮度提升數十倍，甚至到達百倍，有效解決投影機HUD的亮度問題，提供最佳化視覺效果之抬頭顯示裝置，藉以提升行車安全者。 The narrow-angle diffuser head-up display device of the present invention, by the implementation of the above embodiments, provides an optimal narrow-angle diffusion sheet 4 by using an array of micro-concave mirrors of the narrow-angle diffusion sheet 4, so that the diffused reflected light range is approximately Can cover the HUD's concave mirror without unnecessary waste to use a wide viewing angle projection module (or projector), thereby overcoming the use limit of the HUD head-up display device, and the ideal narrow angle of the creation The diffusion sheet 4 is a reflection type diffusion sheet formed by an array of micro concave mirrors. Through the creation, the brightness of the projector to the HUD concave mirror can be increased by several times or even hundreds of times, effectively solving the brightness problem of the projector HUD. A head-up display device that provides an optimized visual effect to enhance driving safety.

綜上所述，本創作之窄角擴散片抬頭顯示裝置，利用微型凹面鏡的陣列所構成之窄角擴散片，以解決現有所存的視覺問題，且所用之技術手段，又為先前技術所無，故而本創作特具專利之新穎性及進步性要件者。 In summary, the narrow-angle diffuser head-up display device of the present invention utilizes a narrow-angle diffusion sheet composed of an array of micro-concave mirrors to solve the existing visual problems, and the technical means used are not available in the prior art. Therefore, this creation is unique to the novelty and progressive requirements of the patent.

在本創作內容中所提出之具體實施例，僅用以方便說明本創作之技術內容，而非將本創作狹義地限制於上述實施例，凡在不超出本創作之精神與下述之申請專利範圍的情況下，所作的種種變化實施，仍屬於本創作之範圍。 The specific embodiments set forth in the present disclosure are only used to facilitate the description of the technical content of the present invention, and the present invention is not limited to the above embodiments in a narrow sense, and the patent application below does not exceed the spirit of the present invention. In the context of the scope, the implementation of the various changes is still within the scope of this creation.

3‧‧‧投影模組 3‧‧‧Projection Module

4‧‧‧窄角擴散片 4‧‧‧Narrow-angle diffuser

5‧‧‧反射鏡 5‧‧‧Mirror

L‧‧‧影像光源 L‧‧‧ image source

Claims (10)

一種窄角擴散片抬頭顯示裝置，包含：一投影模組，其投射出一影像光源；一窄角擴散片，為一微型凹面鏡的陣列，該影像光源投向該窄角擴散片；一反射鏡，該窄角擴散片反射該影像光源至該反射鏡；其特徵在於該投影模組位於該反射鏡同一側，而該窄角擴散片面向該投影模組與該反射鏡。 A narrow-angle diffuser head-up display device comprising: a projection module that projects an image light source; a narrow-angle diffusion sheet, which is an array of micro concave mirrors, the image light source is directed to the narrow-angle diffusion sheet; a mirror, The narrow-angle diffusion sheet reflects the image light source to the mirror; and the projection module is located on the same side of the mirror, and the narrow-angle diffusion sheet faces the projection module and the mirror. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該微型凹面鏡的陣列成一長寬矩陣排列。 The narrow-angle diffuser head-up display device of claim 1, wherein the array of micro-concave mirrors is arranged in a matrix of length and width. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該微型凹面鏡為一直角錐型凹面鏡，該投影模組位於該反射鏡附近。 The narrow-angle diffuser head-up display device of claim 1, wherein the micro-concave mirror is a straight-cone concave mirror, and the projection module is located near the mirror. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該微型凹片鏡為一圓球形凹面鏡，該投影模組位於該反射鏡附近。 The narrow-angle diffuser head-up display device of claim 1, wherein the micro-concave mirror is a spherical concave mirror, and the projection module is located near the mirror. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該微型凹面鏡為一弧形凹面鏡。 The narrow-angle diffuser head-up display device of claim 1, wherein the micro-concave mirror is a curved concave mirror. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該微型凹面鏡的陣列中所有微型凹面鏡與該窄角擴散片成一斜角。 The narrow-angle diffuser head-up display device of claim 1, wherein all of the micro-concave mirrors in the array of micro-concave mirrors are at an oblique angle to the narrow-angle diffusion sheet. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該微型凹面鏡的陣列中所有微型凹面鏡各有不同的角度。 The narrow-angle diffuser head-up display device of claim 1, wherein all of the micro-concave mirrors in the array of micro-concave mirrors have different angles. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該窄角擴散片為一具有至少一個轉折之平面。 The narrow-angle diffuser head-up display device of claim 1, wherein the narrow-angle diffusion sheet is a plane having at least one turn. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該反射鏡為一凹面鏡。 The narrow-angle diffuser head-up display device of claim 1, wherein the mirror is a concave mirror. 如申請專利範圍第1項所述之窄角擴散片抬頭顯示裝置，其中該窄角擴散片為一曲面。 The narrow-angle diffuser head-up display device of claim 1, wherein the narrow-angle diffusion sheet is a curved surface.