M334366 八、新型說明： 【新型所屬之技術領域】 特別是指一種可以影示 本新型是有關於一種投影幕 影像的雙面投影幕。 【先前技術】 參閱圖 主要包含有一投影 以一般投影系統1為例 幕Η ’及-投影機12。該投影幕u具有形成在一正面的一M334366 VIII. New description: [New technical field] It refers to a double-sided projection screen that can be used to visualize a new type of projection screen image. [Prior Art] The reference picture mainly includes a projection using the general projection system 1 as an example 及 and - projector 12. The projection screen u has a one formed on a front side
投影面m。該投影機12是可相對該投影幕u的投影运 111投射光線，使該投影面ηι顯示影像。 由於該投影幕Π具有尺寸大、高分辦率的優點，因而 被廣泛應用於演講、會議、㈣訓，練、監担指揮等會場2。 惟，由於該投影幕11只有正面的投影面U1可以顯示正常 的影像，顯示於該投影幕u背面的影像都會變成反向，因 此’對=較大型的會場2而言，該投影幕u就只能設置在 觀眾的前方，也就是會場2的角落，導致觀眾必須從極遠 的距離觀看影像，而不符合使用需求。 【新型内容】 因此，本新型之目的，即在提供一種可以雙面影示影 像的雙面投影幕。 於是，本新型的雙面投影幕包含一第一投影面、一第 二投影面，及阻隔在該第一投影面與該第二投影面間且阻 擋光線通過的一阻光層。 本新型的功效是能以該阻光層的遮光效果，使該第一 才又〜面4第一投影面間無法相互透光，而能正常顯示影 M334366 像。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一較佳實施例的詳細說明中，將可清 楚的呈現。Projection surface m. The projector 12 projects light relative to the projection screen 111 of the projection screen u, and causes the projection surface to display an image. Because the projection screen has the advantages of large size and high distribution rate, it is widely used in lectures, conferences, (4) training, training, supervision and other venues. However, since only the front projection surface U1 of the projection screen 11 can display a normal image, the image displayed on the back surface of the projection screen u will be reversed. Therefore, for the larger conference site 2, the projection screen u is It can only be placed in front of the audience, that is, the corner of the venue 2, which causes the viewer to view the image from a great distance, and does not meet the needs of use. [New content] Therefore, the object of the present invention is to provide a double-sided projection screen capable of displaying images on both sides. Therefore, the double-sided projection screen of the present invention comprises a first projection surface, a second projection surface, and a light blocking layer that blocks between the first projection surface and the second projection surface and blocks light from passing therethrough. The effect of the novel is that the light-shielding effect of the light-blocking layer can make the first projection surface of the first surface and the surface 4 not transparent to each other, and the image of the M334366 can be normally displayed. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments.
乡閱圖2、圖3 ’本新型雙面投影幕3的一較佳實施例 已含相互$合的一第一投影面31、一第二投影面32，及阻 Ρ岡在4第一投影面31與該第二投影面32間的一阻光層33 。該阻光層33是可阻擔光線通過。 使用時’该雙面投影幕3可依據該會場2的大小，設 置在該會場2中間，再將二台投影機41、42分別設置於該 雙面投影幕3前方及後方。 备4等投影機41、42分別相對該雙面投影幕3的第一 杈p 第一技影面32投射光線時，由前方及後面投射 的光線會分別會受阻於該阻光層33,使該第一投影面31、 該弟，一投影面3 2 1^1 ϋ；、委 f ^ 因為無法透光，而不會有光線相互干擾的 情形。糟此’該第—投影面31、該第二投影面32可正常顯 ’、7 &位於雙面投影幕3前方及後方的觀眾都可以 在該會場2内料的最近，相正㈣影像。 述可知，本新型之雙面投影幕具有下列優點及 功效： ::型：以該阻光層％的遮光效果，使該第一投影面 二又〜面32正常顯示影像，藉此，該雙面投影幕 該會場2的中央位置，使位於該雙面投影幕3 6 M334366 前方及後方的觀眾都可以在該會場2 ^ 看到正常的影像，提昇使用時的方便性二最近距離’ 惟以上所述者，僅為本新型之較佳實施例而已，當不 月b以此限定本新型實施之範圍，即大凡依本新型申請專利 乾圍及新型說明内容所作之簡單的等效變化與修飾，皆仍 屬本新型專利涵蓋之範圍内。 M334366 【圖式簡單說明】 圖1是一俯視圖，說明一般的投影系統； 圖2是一俯視圖，說明本新型一雙面投影幕的一較佳 實施例；及 圖3是該較佳實施例的一立體圖。 M334366 【主要元件符號說明】 2…… -…會場 3 3…… …阻光層 3…… •…雙面投影幕 4卜…… …投影機 3 1…" *…第一投影面 *·#*· + ** …投影機 32…… *…第二投影面2, FIG. 3 'A preferred embodiment of the novel double-sided projection screen 3 has a first projection surface 31, a second projection surface 32, and a first projection surface. A light blocking layer 33 between the surface 31 and the second projection surface 32. The light blocking layer 33 is configured to block light from passing therethrough. When used, the double-sided projection screen 3 can be disposed in the middle of the venue 2 according to the size of the venue 2, and the two projectors 41 and 42 are respectively disposed in front of and behind the double-sided projection screen 3. When the projectors 41 and 42 respectively project the light relative to the first 杈p first technical surface 32 of the double-sided projection screen 3, the light projected from the front and the back may be blocked by the light blocking layer 33, respectively. The first projection surface 31, the younger brother, a projection surface 3 2 1^1 ϋ;; f ^ because it can not transmit light, there is no light interference with each other. The 'the first projection surface 31, the second projection surface 32 can be normally displayed, 7 & the viewer located in front of and behind the double-sided projection screen 3 can be in the nearest site of the venue 2, the positive (four) image . As can be seen, the double-sided projection screen of the present invention has the following advantages and effects: :: type: with the light blocking effect of the light blocking layer, the first projection surface 2 and the surface 32 normally display images, whereby the double The center position of the conference screen 2, so that the viewer in front of and behind the double-sided projection screen 3 6 M334366 can see the normal image in the venue 2 ^, to improve the convenience of use 2 the nearest distance 'only The above is only a preferred embodiment of the present invention, and the simple equivalent change and modification of the present invention in accordance with the scope of the novel application and the new description are limited. , are still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a general projection system; FIG. 2 is a plan view showing a preferred embodiment of a double-sided projection screen of the present invention; and FIG. 3 is a preferred embodiment of the present invention. A perspective picture. M334366 [Description of main component symbols] 2...... -...Meeting place 3 3... ...Light blocking layer 3... •...Double-sided projection screen 4... Projector 3 1..." *...First projection surface*· #*· + ** ...Projector 32... *...Second projection surface