1328667 九、發明說明： ' 【發明所屬之技術領域】 本發明關於一種防眩光柵板’運用光學反射、折射與臨界角等原 理設計，使各種燈具在亮度損失最少情況下光線變柔和、不刺眼，適 於居家'辦公、工廠與道路等照明場所避免眼睛產生眩光現象。 【先前技術】 照明燈具一般分為室内與室外用二種，室内用燈具以半罩式為主 # (請參第一 A圖），主要在發光體（102)上方裝設一半罩式不透光罩 體（101)，罩體内侧表面（103)具反光效果，此類燈具為避免發光體 對眼睛產生刺眼與眩光情況，通常在發光體表面做霧化處理降低前述 現象。 而室外用照明燈具則因考慮環境因素，皆以全罩式燈罩（請參第 一B圖）為主，其下方透光燈罩（1〇4)也是一樣做霧化處理避免眼睛 直視發光體的眩光現象。此二者皆有共同缺點，會因為霧化處理而損 癱 失很多亮度。 【發明内容】 為改善習用燈具在發光體表面或透光燈罩表面以霧化處理避免眼 睛眩光而造成亮度損失問題，本發明提供了__獅眩光栅板，其運用 光學反射、折射與臨界角等原理設計，可應用於各種照明燈具中，可 避免眼睛會直接制燈具内的發光體亮光產生眩光縣，又可在亮度 知失最小的情況下將光線變得更柔和。藉此，使得照具在亮度損 5 1328667 失最少情況下光線變柔和、不刺眼，適於居家、辦公、工廠與道路等 照明場所避免眼睛產生眩光現象。 本發明所提供的一種防眩光柵板，其係為一透光板材，至少在其 底面包括有多數凸透鏡光栅部份及多數楔形光柵部份。多數凸透鏡光 桃部份’被設在該發光體所產生光線較亮的正下方，而光線穿過每一 該些凸透鏡光柵的弧形面時發生折射；而多數楔形光柵部份，被設在 該多數凸透鏡光柵部份的週邊，每一該些楔形光柵將入射角大於該透 光板材物性之光學臨界角之入射光線成全反射而不直接穿透該透光板 材’且將入射角小於該臨界角之入射光線直接穿透該透光板材。 本發明所提供的一種防眩光柵板，在透光板材頂面相對底面多數 凸透鏡光柵而設有九十度交又方式排列之該多數凸透鏡光柵。 進者’本發明所提供的一種防眩光柵板，其中多數楔形光柵可被 設計成直條狀、圓形環狀或橢圓形環狀排於多數凸透鏡光柵部份週 圍’以形成方形、圓形或橢圓形防眩光柵板，以配合不同形狀照明燈 具使用。 以下’將依據圖面所示之各種實施例而詳加說明本發明之結構及 原理。 【實施方式】 請參考第二圖、第二A圖及第二B圖，係為本發明防眩光柵板的 第一種實施例，其係為一方形透光板材（201)，其頂面為一平整面 (202)，底面中間區域成形多數條狀凸透鏡光栅（2〇4)以形成多數凸 6 1328667 .· (601)的臨界角而直接穿透防眩光柵板（601)。 光線（608)通過防眩光柵板（601)的平整面（61〇)時產生折射， 再到另一面的楔形光柵（611)時，其入射角c (609)小於防眩光柵板 (601)的臨界角而直接穿透防眩光柵板（6〇1)。由此可知，本實施例 使得照明燈具在亮度損失最少情況下光線變柔和。 请參考第三圖、第三A圖及第三B圖，係為本發明防眩光柵板的 第一種貫施例，其係為一方形透光板材（3〇1)，其底面成形同第二圖 • 之多數條狀楔形光柵（303)及多數條狀凸透鏡光柵（3〇4)。而透光板 材（301)頂面兩旁區域為平整面（302)，中間區域成形多數條狀凸透 鏡光拇（305)，此多數凸透鏡光拇方向與另一表面之多數凸透鏡光栅 (304)方向成九十度交又排列，這可使發光體正下方光線最亮區域的 亮度損失最小又可將刺眼強光變成格狀的柔和光線，達到防眩光及節 能效果。 在第九圖中所示’係將第三圖之防眩光栅板應用於具有發光體 Φ (丨02)的照明燈具（105)中。在燈具主體之下方照明面活動裝置一 防眩光拇板（701)’防眩光棚·板（701)頂面兩旁為平整面（710)中 間區域成形多數凸透鏡光柵（711)，另底面的兩旁為多數楔形光拇 (712) ，中間區域為多數凸透鏡光柵（713)且與另一表面之多數巴透 鏡光栅（711)成九十度交叉方向排列， 從發光體（102)照射出的光線（702)與（703)通過防眩光棚板 (701)的凸透鏡光栅（711)時產生折射，再經另一面的凸透鏡光栖 (713) 時又一次折射出照明區域。 8 1328667 光線（704)通過防眩光柵板（701)的平整面（710)時產生折射， 再到另一面的楔形光柵（712)時’其入射角a (705)大羚防眩光柵板 (701)的臨界角呈全反射而不穿透防眩光柵板（701)。 光線（706)通過防眩光柵板（701)的平整面（71〇)時產生折射， 再到另一面的楔形光柵（712)時，其入射角b (707)小於防眩光柵板 (701)的臨界角而直接穿透防眩光柵板（701)。 光線（708)通過防眩光柵板（701)的平整面（710)時產生折射， 鲁 再到另一面的楔形光柵（712)時’其入射角c (709)小於防眩光栅板 (701)的臨界角而直接穿透防眩光桃板（701)。由此可知，本實施例 使得照明燈具在亮度損失最少情況下光線變柔和。 請參考第四圖、第四A圖及第四B圖，係為本發明防眩光柵板的 第二種實施例，其係為一方形透光板材（3〇la)，其底面成形同第三圖 之多數條狀楔形光栅（303a)及多數條狀凸透鏡光柵（3〇4a)，頂面全 部成形多數條狀凸透鏡光柵（3〇5a)，此多數凸透鏡光栅方向與另一表 % 面之多數凸透鏡光栅（304)方向成九十度交又排列，這可使發光體正 下方光線最亮區域的亮度損失最小又可將刺眼強光變成片狀的柔和光 線，達到防眩光及節能效果，且可避免穿透出透光板材（3〇la)多數 條狀模形光柵（3〇3a)的光線產生小區塊特別明亮之光斑現象。 在第十圖中所示，係將第四圖之防眩光柵板應用於具有發光體 〇〇2)的照明燈具（1〇5)中.在燈具主體之下方照明面活動裝置一 防眩光柵板（801)’防眩光柵板頂面全部成形多數凸透鏡光栅（81〇)， 而底面的兩旁為多數楔形光柵（811)，中間區域為多數凸透鏡光柵 9 (812)且與另一表面之多數凸透鏡光柵（810)成九十度交叉方向排 列。 從發光體（102)照射出的光線（802)與（803)通過防眩光栅板 (801)的凸透鏡光栅（81〇)時產生折射，再經另一面的凸透鏡光柵 (812)時又一次折射出照明區域。 光線（804)通過防眩光柵板（8〇1)的凸透鏡光柵（810)時產生 折射’再到另一面的楔形光柵（8H)時，其入射角a (805)大於防眩 光柵板（801)的臨界角呈全反射而不穿透防眩光柵板（8〇1)。 光線（806)通過防眩光栅板（801)的凸透鏡光栅（810)時產生 折射’再到另一面的楔形光柵（811)時，其入射角b (8〇7)小於防眩 光柵板（801)的臨界角而直接穿透防眩光柵板（801)。 光線（808)通過防眩光栅板（701)的凸透鏡（810)時產生折射， 再到另一面的楔形光柵（811)時，其入射角c (809)小於防眩光柵板 (801)的臨界角而直接穿透防眩光柵板（8〇1)。由此可知，本實施例 使得照明燈具在亮度損失最少情況下光線變柔和。 請參考第五圖、第五A圖及第五B圖，係為本發明防眩光柵板的 第四種實施例，其係為一圓形透光板材（401)，頂面為一平整面（402)， 底面外圍區域成形多數環狀楔形光柵（403)，這些光柵可控制光線通 過此透光板材時某些特定角度射入的光線入射角恆大於該透光板材物 性的臨界角’使該光線呈全反射而不直接穿透板材’這能避免在任何 角度眼睛會直視到發光體亮點產生炫光現象；底面中間區域成形多數 條狀凸透鏡光柵（4〇4)，光線通過透光板材平整面及凸透鏡到照明區 域％會經過二次折射，這可使發光體正下方光線最亮區域的亮度損失 最小又可將刺眼強光變成片狀的柔和光線，達到防眩光及節能效果。 請參考第六圖、第六A圖及第六B圖，係為本發明防眩光柵板的 第五種貫施例，其係為一圓形透光板材（5〇1)，其底面成形同第四圖 之多數環狀楔形光栅（503)及多數條狀凸透鏡光柵（5〇4)，頂面外圍 區域為平整面（502)，中間區域成形多數條狀凸透鏡光栅（5〇5)，此 多數條狀凸透鏡光柵方向與另一表面之多數條狀凸透鏡光柵（5〇4)方 向成九十度交又排列，這可使發光體正下方光線最亮區域的亮度損失 最小又可將刺眼強光變成格狀的柔和光線，達到防眩光及節能效果。 請參考第七圖、第七A圖及第七B圖，係為本發明防眩光柵板的 第六種實施例，其係為一圓形透光板材（5〇ia) ’其底面成形同第五圖 之多數環狀楔形光柵（503a)及多數條狀凸透鏡光柵（5〇4a)，頂面全 部成形多數條狀凸透鏡光柵（505a)，此多數條狀凸透鏡光柵方向與另 一表面之多數條狀凸透鏡光柵（5〇4a)方向成九十度交叉排列，這可 使發光體正下方光線最亮區域的亮度損失最小又可將刺眼強光變成格 狀的柔和光線，達到防眩光及節能效果，且可避免穿透出透光板材 (501a)多數條狀模形光栅（5〇3a)的光線產生小區塊特別明亮之光 斑現象。 當然’以上圖面所示僅為本發明的較佳實施例，但依據本發明技 術思想所作之簡易或等效變化，例如多數楔形光栅以橢圓形環狀排於 該多數凸透鏡光柵部份週圍以形成一橢圓形防眩光栅板，仍屬本發明 專利保護範圍之中。 13286671328667 IX. Description of the invention: 'Technical field of the invention>> The invention relates to an anti-glare grating plate using the principles of optical reflection, refraction and critical angle to make the lamps soften and not glare in the case of minimum brightness loss. It is suitable for homes, factories, factories and roads to avoid glare in the eyes. [Prior Art] Lighting fixtures are generally divided into indoor and outdoor use, and indoor lighting is mainly semi-hood type # (please refer to Figure A), which is mainly installed above the illuminant (102). The mask body (101) and the inner side surface (103) of the cover body have a reflective effect. In order to prevent the illuminating body from causing glare and glare to the eyes, such a luminaire usually performs atomization treatment on the surface of the illuminant to reduce the foregoing phenomenon. For outdoor lighting, due to environmental considerations, the full-cover lampshade (please refer to Figure B) is mainly used, and the light-transmitting lampshade (1〇4) below is also atomized to avoid direct eye-illuminating. Glare phenomenon. Both of these have common shortcomings, and they lose a lot of brightness due to atomization. SUMMARY OF THE INVENTION In order to improve the brightness loss caused by the atomization treatment of the conventional luminaire on the surface of the illuminant or the surface of the transparent hood to avoid eye glare, the present invention provides a __ lion ray grating plate, which uses optical reflection, refraction and critical angle. The principle design can be applied to various lighting fixtures, which can avoid the glare of the illuminator in the luminaire directly in the luminaire, and the glare county can be softened with the minimum brightness. In this way, the light is softened and not glare when the brightness loss 5 1328667 is minimized, and is suitable for lighting, such as home, office, factory and road, to avoid glare of the eyes. An anti-glare grating plate provided by the present invention is a light-transmitting plate comprising at least a plurality of convex lens grating portions and a plurality of wedge-shaped grating portions on a bottom surface thereof. Most of the convex lens peaches are disposed directly below the light generated by the illuminator, and the light refracts when passing through the curved faces of each of the convex lens gratings; and most of the wedge grating portions are disposed at The periphery of the majority of the convex lens grating portions, each of the wedge gratings totally reflecting the incident light having an incident angle larger than the optical critical angle of the physical properties of the transparent plate material without directly penetrating the light transmitting plate' and the incident angle is less than the critical The incident light of the corner directly penetrates the light transmissive plate. The anti-glare grating plate provided by the invention has a plurality of convex lens gratings on the top surface of the transparent plate opposite to the bottom surface, and is provided with a plurality of convex lens gratings arranged in a ninety degree manner. The invention provides an anti-glare grating plate, wherein most of the wedge gratings can be designed as straight strips, circular rings or elliptical rings arranged around the majority of the convex lens grating portions to form a square and a circle. Or elliptical anti-glare grating plates for use with different shapes of lighting fixtures. The structure and principle of the present invention will be described in detail below with reference to various embodiments shown in the drawings. [Embodiment] Please refer to the second figure, the second A figure and the second B figure, which is a first embodiment of the anti-glare grating plate of the present invention, which is a square transparent plate (201), the top surface thereof For a flat surface (202), a plurality of strip-shaped convex lens gratings (2〇4) are formed in the middle portion of the bottom surface to form a critical angle of a plurality of protrusions 6 1328667 (601) and directly penetrate the anti-glare grating plate (601). The light (608) is refracted by the flat surface (61〇) of the anti-glare grating plate (601), and the incident angle c (609) is smaller than the anti-glare grating plate (601) when the wedge grating (611) of the other side is applied. The critical angle directly penetrates the anti-glare grating plate (6〇1). It can be seen from this that the present embodiment makes the lighting fixture softer with minimal loss of brightness. Please refer to the third figure, the third A figure and the third B figure, which is the first embodiment of the anti-glare grating plate of the present invention, which is a square transparent plate (3〇1), and the bottom surface thereof is formed. The second figure • The majority of the strip wedge grating (303) and the majority of the strip lens grating (3〇4). The light-emitting plate (301) has a flat surface (302) on both sides of the top surface, and a plurality of strip-shaped convex lens light fingers (305) are formed in the middle portion, and the light direction of the plurality of convex lenses is opposite to the direction of the majority of the convex lens gratings (304) of the other surface. Ninety degrees are arranged and arranged, which can minimize the brightness loss of the brightest area under the illuminant and turn the glare into a grid of soft light to achieve anti-glare and energy saving effects. The anti-glare grating plate of the third figure is applied to the lighting fixture (105) having the illuminant Φ (丨02) as shown in the ninth figure. Under the main body of the lamp, an anti-glare flip-flop (701)' anti-glare shed plate (701) has a plurality of convex lens gratings (711) formed on the top surface of the flat surface (710) on both sides of the top surface, and the other sides of the bottom surface are Most of the wedge-shaped optical fingers (712) have a plurality of convex lens gratings (713) in the middle and are arranged in a ninety-degree crossing direction with a plurality of bar lens gratings (711) on the other surface, and the light emitted from the luminous body (102) (702) And (703) refraction occurs when passing through the convex lens grating (711) of the anti-glare panel (701), and the illumination region is again reflected by the convex lens of the other surface (713). 8 1328667 Light (704) is refracted by the flat surface (710) of the anti-glare grating plate (701), and then to the other side of the wedge grating (712) 'the angle of incidence a (705) of the gazelle anti-glare grating plate ( The critical angle of 701) is totally reflected without penetrating the anti-glare grating plate (701). The light (706) is refracted by the flat surface (71〇) of the anti-glare grating plate (701), and the incident angle b (707) is smaller than the anti-glare grating plate (701) when the wedge grating (712) of the other surface is passed. The critical angle directly penetrates the anti-glare grating plate (701). When the light (708) passes through the flat surface (710) of the anti-glare grating plate (701), the refraction is generated, and when the wedge grating (712) is applied to the other side, the incident angle c (709) is smaller than the anti-glare grating plate (701). The critical angle directly penetrates the anti-glare peach plate (701). It can be seen from this that the present embodiment makes the lighting fixture softer with minimal loss of brightness. Please refer to FIG. 4, FIG. 4A and FIG. 4B, which are a second embodiment of the anti-glare grating plate of the present invention, which is a square transparent plate (3〇la), and the bottom surface thereof is formed by the same The plurality of strip-shaped wedge gratings (303a) and the plurality of strip-shaped convex lens gratings (3〇4a) of the three figures are all formed with a plurality of strip-shaped convex lens gratings (3〇5a), and the direction of the majority of the convex lens gratings is opposite to that of the other surface. Most of the convex lens gratings (304) are arranged at ninety degrees and arranged, which can minimize the brightness loss of the brightest area under the illuminating body and turn the glare glare into a sheet-like soft light to achieve anti-glare and energy saving effects. Moreover, it is possible to avoid the light that is transmitted through the transparent strip (3〇la) and the strip-shaped pattern grating (3〇3a) to produce a particularly bright spot phenomenon of the block. As shown in the tenth figure, the anti-glare grating plate of the fourth figure is applied to a lighting fixture (1〇5) having an illuminant 〇〇2). Under the illuminating body, an illuminating surface movable device and an anti-glare grating are provided. The top surface of the plate (801)' anti-glare grating plate is formed with a plurality of convex lens gratings (81 turns), and the bottom surface is a plurality of wedge-shaped gratings (811) on both sides, and the middle portion is a plurality of convex lens gratings 9 (812) and a majority of the other surface The lenticular lens gratings (810) are arranged in a ninety degree crossing direction. The light (802) and (803) emitted from the illuminator (102) are refracted by the convex lens grating (81 〇) of the anti-glare grating plate (801), and are again refracted by the convex lens grating (812) of the other surface. Out of the illuminated area. When the light (804) passes through the convex lens grating (810) of the anti-glare grating plate (8〇1), the refractive index 'reverses to the other side of the wedge grating (8H), the incident angle a (805) is larger than the anti-glare grating plate (801). The critical angle is totally reflected without penetrating the anti-glare grating plate (8〇1). When the light (806) passes through the convex lens grating (810) of the anti-glare grating plate (801) to generate a refractive grating 'reverse to the other side of the wedge grating (811), its incident angle b (8〇7) is smaller than the anti-glare grating plate (801). The critical angle directly penetrates the anti-glare grating plate (801). The light (808) is refracted by the convex lens (810) of the anti-glare grating plate (701), and the incident angle c (809) is smaller than the critical value of the anti-glare grating plate (801) when the wedge grating (811) of the other side is applied. The angle directly penetrates the anti-glare grating plate (8〇1). It can be seen from this that the present embodiment makes the lighting fixture softer with minimal loss of brightness. Please refer to FIG. 5, FIG. 5A and FIG. 5B, which are a fourth embodiment of the anti-glare grating plate of the present invention, which is a circular transparent plate (401), and the top surface is a flat surface. (402), a peripheral annular region is formed with a plurality of annular wedge gratings (403), which control the incident angle of light incident at a certain angle when the light passes through the transparent plate is always greater than the critical angle of the physical properties of the transparent plate. The light is totally reflected without directly penetrating the sheet. This avoids the glare of the bright spot of the illuminator at any angle. The strip is formed by a strip of convex lens grating (4〇4) in the middle of the bottom surface. The flat surface and the convex lens to the illumination area% will undergo secondary refraction, which can minimize the brightness loss of the brightest area under the illuminant and turn the glare glare into a sheet-like soft light to achieve anti-glare and energy saving effects. Please refer to FIG. 6 , FIG. 6A and FIG. 6B , which are the fifth embodiment of the anti-glare grating plate of the present invention, which is a circular transparent plate (5〇1), and the bottom surface thereof is formed. Like the majority of the annular wedge grating (503) and the plurality of strip convex lens gratings (5〇4) of the fourth figure, the peripheral surface of the top surface is a flat surface (502), and a plurality of strip-shaped convex lens gratings (5〇5) are formed in the middle portion. The direction of the plurality of strip-shaped convex lens gratings is arranged at ninety degrees with the direction of the plurality of strip-shaped convex lens gratings (5〇4) of the other surface, which can minimize the brightness loss of the brightest area directly under the illuminating body and can be glare The glare turns into a grid of soft light that achieves anti-glare and energy savings. Please refer to the seventh, seventh and seventh B drawings, which are a sixth embodiment of the anti-glare grating plate of the present invention, which is a circular transparent plate (5〇ia) In the fifth figure, a plurality of annular wedge gratings (503a) and a plurality of strip-shaped convex lens gratings (5〇4a) are formed on the top surface of a plurality of strip-shaped convex lens gratings (505a), and the majority of the strip-shaped convex lens gratings are aligned with the other surface. The strip-shaped convex lens grating (5〇4a) direction is arranged at ninety degrees, which can minimize the brightness loss of the brightest area under the illuminant and can turn the glare glare into a lattice-like soft light to achieve anti-glare and energy saving. The effect is that the light that penetrates the strip-shaped pattern grating (5〇3a) of the light-transmitting sheet (501a) can be prevented from causing a particularly bright spot phenomenon of the block. Of course, the above figures are only preferred embodiments of the present invention, but simple or equivalent changes made according to the technical idea of the present invention, for example, most wedge gratings are arranged in an elliptical annular shape around the portion of the majority of the convex lens gratings. Forming an elliptical anti-glare grating plate is still within the scope of the patent protection of the present invention. 1328667
【圖式簡單說明】 第一A圖為一種習知半罩式照明燈具示意圖， 第一B圖為一種習知全罩式照明燈具示意圖， 第一圖係為本發明第一種實施例之底面視圖， 第二A圖係為第二圖之正面視圖， 第一B圖係為第二圖之側面視圖， 第三圖係為本發明第二種實施例之底面視圖， 第二A圖係為第三圖之正面視圖，BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a schematic view of a conventional half-hood type lighting fixture, and FIG. 1B is a schematic view of a conventional full-cover type lighting fixture. The first figure is a bottom view of the first embodiment of the present invention. The second view is a front view of the second figure, the first B is a side view of the second figure, the third view is the bottom view of the second embodiment of the present invention, and the second A is the third view. Front view of the figure,
第二B圖係為第三圖之側面視圖， 第四圖係為本發明第三種實關之底面視圖， 第四A圖係為第四圖之正面視圖， 第四B圖係為第四圖之側面視圖， 第五圖係為本發明第四種實施例之底面視圖， 第五A圖係為第五圖之正面視圖， 第五B圖係為第五圖之側面視圖，The second B is a side view of the third figure, the fourth figure is the bottom view of the third type of the present invention, the fourth A is the front view of the fourth figure, and the fourth B is the fourth view. 5 is a bottom view of a fourth embodiment of the present invention, a fifth view is a front view of the fifth figure, and a fifth B is a side view of the fifth figure.
第六圖係為本發明第五種實補之底面視圖， 第A圖係為第六圖之正面視圖， 第六B圖係為第六圖之側面視圖， 第七圖係為本發明第六種實施例之底面視圖， 第七A圖係為第七圖之正面視圖， 第七B圖係為第七圖之側面視圖， 第_係為本發明第二圖所示第一種實施例應用於照明燈具之示 意圖及其光線路徑圖， 圖所不第二種實施例應用於照明燈具之示 第九圖係為本發明第三 思圖及其光線路獲圖， 12 1328667 • · 第十圖係為本發明第四圖所示第三種實施例應用於照明燈具之示 意圖及其光線路徑圖。 【主要元件符號說明】 半罩式不透光罩體（101) 發光體（102) 罩體内側表面（103) 透光燈罩（104) • 照明燈具（105) 透光板材（201 ) (301 ) (301a) (401 ) (501 ) (501a) 平整面（202) (302) (402) (502) 條狀楔形光柵（203) (303) (303a) (403) (503) (503a) 條狀凸透鏡光栅（204) (304) (304a) (404) (504) (504a) 條狀凸透鏡光柵（305) (305a) (505) (505a) 防眩光柵板（601) (701) (801) 平整面（610) (710) • 楔形光栅（611) (Ή2) (811) 凸透鏡光柵（612) (711) (810) (812) 凸透鏡光柵（713) 光線（602) (603) (604) (606) (608) (702) (703) (704) (706) (708) (802) (803) (804) (806) (808) 入射角 a (605) (705) (805) 入射角 b (607) (707) (807) 入射角 c (609) (709) (809) 13The sixth figure is a bottom view of the fifth practical compensation of the present invention, the first figure is the front view of the sixth figure, the sixth B is the side view of the sixth figure, and the seventh figure is the sixth figure of the present invention. The bottom view of the embodiment, the seventh view is the front view of the seventh figure, and the seventh B is the side view of the seventh figure, the first embodiment is the application of the first embodiment shown in the second figure of the present invention. The schematic diagram of the lighting fixture and its light path diagram, the second embodiment of the diagram is applied to the illumination fixture. The ninth diagram is the third diagram of the invention and the optical circuit diagram thereof, 12 1328667 • · It is a schematic diagram of a third embodiment shown in the fourth figure of the present invention applied to a lighting fixture and a light path diagram thereof. [Description of main component symbols] Half-cover type opaque cover (101) Illuminant (102) Inside surface of cover (103) Translucent cover (104) • Lighting (105) Translucent plate (201) (301) (301a) (401) (501) (501a) Flat surface (202) (302) (402) (502) Strip wedge grating (203) (303) (303a) (403) (503) (503a) Strip Convex Lens Gratings (204) (304) (304a) (404) (504) (504a) Strip Lens Gratings (305) (305a) (505) (505a) Anti-Grimmer Grating Plates (601) (701) (801) Leveling Face (610) (710) • Wedge Grating (611) (Ή2) (811) Convex Lens Grating (612) (711) (810) (812) Convex Lens Grating (713) Light (602) (603) (604) (606 (608) (702) (703) (704) (706) (708) (802) (803) (804) (806) (808) Incident angle a (605) (705) (805) Incident angle b ( 607) (707) (807) Incidence angle c (609) (709) (809) 13