M431690 五、新型說明： 【新型所屬之技術領域】 本新型是有關於一種視網膜驗光系統，特別是指一種 能夠改變背景光的可變式視網膜驗光系統。 【先前技術】 臨床上屈光檢查（俗稱驗光檢驗）有兩種方法：主覺 檢查法與他覺檢查法。 主覺檢查法是根據被檢查者主覺的視力清晰程度，以 試戴鏡片的方式’觀測圖樣在不同背景色系下的清晰程度 、或注視散光表測定其屈光系統的狀況，由於此種檢查有 賴於被檢查者的觀察能力、合作程度及其調節功能狀態， 所以’結果並不十分可靠。 他覺檢查法是利用視網膜發出的光線在遠點處成像的 原理，通過觀察瞳孔區的光影動態確定眼的遠點位置，從 而推算遠點移至無限遠所需的屈光度。參閱圖丨，近年來出 現了各種類型的自動驗光儀丨，主要包含產生光線的一發光 元件11、匯t光線朝該人眼行進的一透鏡丨2、設置在前述 光打進路徑上的一投影物13、用於接收光訊號的一光訊號 接收益14,及反射光影動態至該光訊號接收器14的一反射 鏡15。藉此，判斷前述遠點位置是在視網膜前或後。 准正確的視力墙正不止是測量度數，還包括主覺式 驗光測試，如圖樣在不同背景色系下的清晰程度，才能決 定最後配鏡度數，而目前市面上的驗光只能透過抽換 投影物13才能改變背景色系，在使用程序上較複雜，且不 3 M431690 方便。 【新型内容】 因此，本新型之目的，即在提供一種能夠提升驗光準 辞性與方便性的可變式視網膜驗光系統。 於是’本新型的可變式視網膜驗光系統，用於投射光 線於一眼睛的視網膜，包含一光學模組'一投影物，及一 發光模組。該光學模組建構出一光路徑，供光線依循該光 路徑行進。該投影物設置在該光路徑上。該發光模組具有 一主發光件與一背景發光件’該主發光件與該背景發光件春 分別相對前述光路徑產生不同色系的光線，使該投射物的 影像投影於該眼睛的視網膜。 本新型的有益效果在於：配合該投射物的形狀，在不 需要更換投射物的情形下，以同時產生作用的背景光，及. 改變背景光顏色的方式，大幅提升驗光時的準確性。 【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個較佳實施例的詳細說明中，將可鲁 清楚的呈現。 參閱圖2 ’本新型可變式視網膜驗光系統的一較佳實施 例包含一光學模組2、一投影物3、一發光模組4，及一影 像擷取模組5。 該光學模組2建構出一光路徑，具有供光線通過的數 聚光鏡21、反射光線的數反光鏡22〜26、入射光線的二入 光側27、28 ’及出射光線的一出光側29。該反光鏡23可 4 旋動而調整光線的反射角度β 該投影物3設置在該光路徑上。 該發光模組4具有一主發光件41與一背景發光件42。 該主發光件41與該背景發光件42在本較佳實施例分別為 發光二極體’而分別由前述入光側27、28相對前述光路徑 產生不同色系的光線。 δ玄衫像搁取彳吴組5用於操取光訊號’在_本較佳實施例 為感光耦合元件（Charge-Coupled Device)。 當該主發光件41的光線由該入光側2 7沿光路徑發射 光線且通過該投影物3，該投影物3的影像會依循前述光路 徑經該反光鏡22、23、24通過該聚光鏡21 ,最後經該反光 鏡25且朝該出光側29投射至人眼的視網膜，同時，該背 景發光件42的光線也會由該入光側28依循前述路徑朝該 出光側29投射至視網膜，藉此，改變前述影像的色系。 此時’該反光鏡26會反射人眼的光影動態至該影像擷 取模組5，使該影像擷取模組5擷取光訊號後，由—顯示幕 (圖未不）顯不前述光影動態的遠點位置是在視網膜前，供驗 光師判斷前述影像在不同背景色系下的清晰程度，決定最 後配鏡度數。 據上所述可知，本新型之可變式視網膜驗光系統具有 下列優點及功效： 本新型能夠在不需要更換投射物3的情形下，以改變 背景光的方式，判斷影像在不同背景色系下的清晰程度， 決定最後配鏡度數’不但構造精簡、成本低、使用操：相 M431690 當方便，且能夠大幅提升驗光時的準確性。 惟以上所述者，僅為本新型之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本新型申請專利 範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。 t圖式簡單說明】 圖1是一示意圖，說明一般的驗光儀；及 圖2是一不意圖，說明本新型一可變式視網膜驗光系 统0 M431690 【主要元件符號說明】 2 ........ …光學模組 3…… ••…投影物 21....... • · 1光鏡 4…… …··發光模組 22〜26… ••反光鏡 41 ·.... .....主發光件 27....... …入光側 42 •…背景發光件 28....... ••入光側 5…… …··影像擷取模組 29....... …出光側M431690 V. New Description: [New Technology Field] The present invention relates to a retinal optometry system, and more particularly to a variable retinal optometry system capable of changing background light. [Prior Art] Clinical fluoroscopy (commonly known as optometry) has two methods: the subjective test and the other test. The subjective examination method is based on the clarity of the visual acuity of the examinee, and the degree of clarity of the observation pattern in different background colors, or the astigmatism of the astigmatism meter to determine the condition of the refractive system. The inspection depends on the observer's observation ability, cooperation level and adjustment function status, so the result is not very reliable. He senses that the inspection method is based on the principle that the light emitted by the retina is imaged at a distant point. The position of the far point of the eye is dynamically determined by observing the light and shadow in the pupil area, thereby calculating the diopter required to move the far point to infinity. Referring to the drawings, various types of automatic refractometers have appeared in recent years, mainly including a light-emitting element 11 that generates light, a lens 汇 that travels toward the human eye, and one that is disposed on the light-in path. The projector 13 has an optical signal receiving benefit 14 for receiving the optical signal, and a reflected mirror 15 is reflected to the optical signal receiver 14. Thereby, it is judged that the aforementioned far point position is in front of or behind the retina. The correct correct vision wall is not only the measurement degree, but also the main optometry test, the clarity of the picture in different background colors, in order to determine the final degree of optics, and the current optometry on the market can only be exchanged projection Object 13 can change the background color, which is more complicated in the use procedure, and is not convenient for 3 M431690. [New content] Therefore, the object of the present invention is to provide a variable retinal optometry system capable of improving the optometry and convenience of optometry. Thus, the novel variable retinal optometry system for projecting light to the retina of an eye comprises an optical module 'a projection, and a light emitting module. The optical module constructs a light path for the light to travel along the light path. The projection is disposed on the light path. The illuminating module has a main illuminating member and a background illuminating member. The main illuminating member and the background illuminating member respectively generate light of different color systems with respect to the light path, so that the image of the projecting object is projected on the retina of the eye. The utility model has the beneficial effects that the shape of the projectile is matched, and the background light which acts at the same time and the color of the background light are changed without any need to replace the projectile, thereby greatly improving the accuracy of the optometry. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of a preferred embodiment of the drawings. Referring to Figure 2, a preferred embodiment of the variable retinal optometry system of the present invention comprises an optical module 2, a projection 3, a lighting module 4, and an image capturing module 5. The optical module 2 constructs a light path having a plurality of condensing mirrors 21 for passing light, a number of mirrors 22 to 26 for reflecting light, two light incident sides 27, 28' for incident light, and a light exiting side 29 for emitting light. The mirror 23 can be rotated to adjust the reflection angle β of the light. The projection 3 is disposed on the light path. The light emitting module 4 has a main light emitting member 41 and a background light emitting member 42. The main illuminating member 41 and the background illuminating member 42 are respectively light-emitting diodes in the preferred embodiment, and the light-introducing sides 27 and 28 respectively generate light of different color systems with respect to the light path. The δ Xuan shirt is used to take the optical signal. The preferred embodiment is a Charge-Coupled Device. When the light of the main illuminating member 41 emits light along the light path through the light incident side 27 and passes through the projecting object 3, the image of the projecting object 3 passes through the illuminating mirror through the mirrors 22, 23, 24 according to the light path. 21 . Finally, the mirror 25 is projected toward the light exiting side 29 to the retina of the human eye. At the same time, the light of the background illuminating member 42 is also projected by the light incident side 28 toward the light exiting side 29 to the retina according to the aforementioned path. Thereby, the color system of the aforementioned image is changed. At this time, the mirror 26 reflects the light and shadow of the human eye to the image capturing module 5, so that the image capturing module 5 captures the light signal, and the display screen (not shown) displays the light and shadow. The dynamic far point position is in front of the retina, and the optometrist determines the clarity of the image in different background colors and determines the final degree of optician. According to the above description, the variable retinal optometry system of the present invention has the following advantages and effects: The present invention can determine the image under different background colors by changing the background light without changing the projectile 3 The clarity of the decision, the final degree of optician's not only simple structure, low cost, the use of operation: phase M431690 is convenient, and can greatly improve the accuracy of optometry. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the novel patent application scope and the novel description content, All remain within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a general refractometer; and Fig. 2 is a schematic view showing a variable retinal optometry system of the present invention 0 M431690 [Major component symbol description] 2 ..... ...optical module 3... ••...projector 21....... • 1 light mirror 4... ...··light module 22~26... ••reflector 41 ·... ..... main illuminating member 27.........lighting side 42 •...background illuminating member 28.... ••lighting side 5............··Image capturing dies Group 29..........lighting side