B7 五、發明説明（， .制塗—塗層㈣’特別是針對高效能日光控 '射時曰均光不控會制呈玻現璃明的需求持續增加’尤其是在反射及透 . 月』色彩的高效能日光控制塗層玻璃的需 蚀古°、們所指的「高效能」日光控制塗層玻璃係指能夠 问比例的入射光而非高比例的總入射輻射能（總曰光 經濟部中央標準局員工消費合作社印製 月透過的玻璃。加了鐵的膚色玻璃能夠提供高的日光控 制=能、’但是鐵會使玻璃變得較綠，而且這種綠色調往往 不受歡迎。加入額外的添加物，例如將石西及一種金屬氧化 物如氧化銘-起混入，可使這種綠色調轉變為較不顯著的 色調，但也得付出效能變差的代價，也就是會提高入射熱 /入射光比值。塗層中加了銀金屬層配上適合的非傳導層 的多層堆疊可供作為高效能日光控制產品，其在反射及透 射時均不會呈現明顯色彩，但其亦有顯著的缺點。首先， 適當的銀金屬層不能夠以線上沉殿作業方式，亦即在玻璃 生產線尚未被切割下來之前呈帶狀、高溫的玻璃上進行塗 層，而必須以離線的低壓技術，例如磁控管濺鍍法來塗 、層。再者，以上述方式塗層的製品很容易遭受物理性破 壞，所以在製程中及產品完成後都需要小心地保護，例如 以覆罩物保護且維持塗層面不為其他東西所接觸。 因此需提供一種塗層，其能夠提供高效能日光控制，而 沒有前述銀塗層製品的缺點’且其最好能夠在反射及透射 時均不會呈現明顯色彩’或至少能取代前述膚色玻璃在反 射及透射時呈現綠色之反射與透射的特性。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 經濟部中央標準局員工消費合作社印製 五、發明説明（ 本發明提供了由金屬化合物構成的低放射率層及一層吸 熱層組成的塗層及玻璃基材製成的高效能曰光控制塗層玻 璃。 本發明含下列圖式，但並不表示本發明僅限於該等圖 式： 第1圖顯示本發明中的一個塗層玻璃實施例之截面圖。 第2圖顯示本發明中的另一個塗層玻璃實施例之截面 圖。 第3圖顯示結合雙鑲窗單元與如第i圖的塗層玻璃之截 面圖。 參照第1圖，高效能日光控制塗層玻璃i由玻璃基材u (通4疋透明浮式玻璃）及塗層12組成，塗層12則包括 金屬化合物構成的低放射率層13及一層吸熱層14。 第2圖所示的實施例與第丨圖的實施例類似，塗層玻璃 2包括玻璃基材21 (通常是透明浮式玻璃）及塗層22。但 是塗層22和塗層12不同之處在於除了由金屬化合物構成 的低放射率層23及一層吸熱層24組成外，又加上一層虹 彩抑制層25，其在以下會進一步說明。 第3圖所示為一片第1圖之塗層玻璃1與另一片鑲窗材 料31 (通常是透明浮式玻璃）以平行間隔方式組合，它們 之間的間隔及密封由間隔密封系統32構成，成為内含空氣 間隙33的雙鑲窗單元3。而塗層12則面朝空氣間隙33。 為了增加效能，吸熱層的吸收波長在最好700奈米以 上’且最好實質不會吸收可見光譜。此吸熱層可以是一層 本紙張尺度適用中國國家標隼（CNS ) A4娜 ( 2丨〇><297公釐） ^, 0裝 —1T-------# (請先閱讀背面之注意事項再填寫本頁) A7 B7 經濟部中央標準局員工消費合作杜印製 五、發明説明（3 ) 幾乎透明且具傳導性的氧化物，其中尤以氧化鎢為佳，因 其吸收峰出現在9〇〇奈米附近。 氧化鎢以傳導性及非傳導性兩種狀態存在。化學計量氧 化鎢，w〇3是非傳導物質，並且大體上不會吸收近遠紅外 線。非化學計量的氧化鎢，W03_x,這裡的x通常不大於 0-03 (最佳範圍在0 005至0 025);以及含有雜質的氧化 鎢，含有適當之不同電價如氫、氟或驗金族金屬的雜質， 均具有傳導性且適合用在本發明中。 用來作為隔熱層的氧化鎢層可以是結晶或是不具固定形 狀的如果使用其結晶，通常最好避免使用太大的結晶.， 因為大的結晶會導致不透明。 其他可用來作為吸熱層的吸熱物質尚有其他的金屬氧化 物’如氧化鈷、氧化鉻、氧化鐵及氧化釩，或以上金屬氧 化物的混合物亦可。 吸熱層的厚度通常在50奈米至500奈米之間，而以 奈米至200奈米最常見。 低放射率層是_層金屬化合物，通常為金屬氧化物（因 低放射率的金屬氮化物或金屬矽化物會降低光線的透 =),以及一個透明之半導體如含雜質的銦、錫或鋅。通 常為雜有錫的氧化钢及雜有氟的氧化錫。低放射率層的厚 度通吊在1GG奈米i _奈米之間（因為過厚的低放射率 層會導致光線透射不必要的減少且不能降低放射率到足以 彌補透射減少的效果），而以奈米至則奈米最常 見。低放射率層的低放射率可小於〇4 (在此敛述與申請 專 —„-------裝— (讀先閱讀背面之注意事項再填寫本頁) -訂 I -- € -6- 民紙張尺度 1 -i !i - -- I Is— · .s A7 經濟部中央檩準局員工消費合作衽印製 五、發明説明（4 =範圍中之放射性數值—般放射率值，其係由肋 1’2:1994, Annex A _之標準低放料幻，不過通常 低放射率層的放射率低於〇 2。 塗層中的低放射率層通常是塗覆於吸熱層上的，而日光 ㈣玻璃之塗層面則_其鑲窗空間之内面而鑲裝（通常 疋建築物，但亦非必然如此）。 在本發明中使用之薄層可能會導致干擾色彩或缸彩的出 現。為了避免或減緩這種干擾現象，可以在結合吸孰層及 低放射率層到玻璃基材前先加入一層色彩抑制層（盆可被 硯為塗層之-）於前述兩層之下。此一色彩抑制層的成分 及結合方法已在先前公開之專利中描述（GB 2 〇31 7湖， 收211.5删以及Ep〇 275 662B)。因此根據本發明之 較佳態樣，可在吸制及低放料層構成的塗層下，混入 —色彩抑制層或其他薄層。 額外的薄層如一層抗反射層亦可加在塗層之上，但是這 種額外的塗層往往會造成低放射率性質之損失，即增加放 射性，所以往往不加此層。 本發明中的吸熱層及低放射率層可用已知之技術如雜 法（包括反應性濺鍍法）或化學氣相沉積來結合到玻璃基 材上。實際上，本發明提供了一項重要的優點，即上述兩 層均容許以化學氣相沉積來，故提供了在玻璃製造過程中 便可將塗層加到熱的帶狀玻璃的可能性。用以沉積吸熱層 的化學氣相沉積可見於EP 0 523 877 A1及EP 〇 546 669 B1 ’用以沉積金屬氧化物之低放射率層的化學氣相沉積法 讀 先 聞 讀 背 之 注 意B7 V. Description of the invention (, "Coating-coating ㈣ 'especially for high-efficiency daylight control', the demand for uniform light control will increase continuously when shooting, especially for reflection and transmission. The "high-efficiency" daylight-control coating glass of the color "month" needs to be eroded. What we mean by "high-performance" daylight-control coating glass refers to the ratio of incident light instead of a high proportion of total incident radiant energy (total Printed by the Consumers 'Cooperative of the Central Standards Bureau of the Ministry of Light Economy. Glass with iron color can provide high daylight control = Yes,' But iron will make the glass greener, and this green tone is often not affected by Welcome. Adding additional additives, such as mixing Shixi and a metal oxide such as oxide oxide, can turn this green tone into a less prominent hue, but at the cost of poor performance, that is, It will increase the incident heat / incident light ratio. The multilayer stack with silver metal layer and suitable non-conductive layer in the coating can be used as a high-performance daylight control product, which will not show obvious color during reflection and transmission, but There are also significant shortcomings. First, proper silver metal layers cannot be immersed online, that is, before the glass production line is cut, the glass is coated with a strip of high temperature and must be coated with offline low pressure. Techniques, such as magnetron sputtering, are used to coat and layer. In addition, the products coated in the above manner are vulnerable to physical damage, so they need to be carefully protected during the process and after the product is completed, such as by covering Protect and maintain the coating surface from being touched by other things. Therefore, it is necessary to provide a coating that can provide high-efficiency daylight control without the disadvantages of the aforementioned silver-coated products' and that it is best to be free of reflection and transmission. Will show obvious colors' or at least can replace the aforementioned characteristics of the skin-colored glass when it reflects and transmits green reflection and transmission characteristics. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) Employees of the Central Standards Bureau of the Ministry of Economy Printed by the cooperative V. Description of the invention (The present invention provides a low-emissivity layer composed of a metal compound and a heat-absorbing layer High-efficiency light-control coated glass made of coating and glass substrate. The present invention contains the following drawings, but it does not mean that the invention is limited to these drawings: Figure 1 shows a coated glass in the present invention Sectional view of the embodiment. Fig. 2 shows a cross-sectional view of another coated glass embodiment in the present invention. Fig. 3 shows a cross-sectional view of a combination of a double glazing unit and a coated glass as shown in Fig. I. As shown in the figure, the high-efficiency daylight-control coating glass i is composed of a glass substrate u (a transparent floating glass) and a coating 12. The coating 12 includes a low-emissivity layer 13 and a heat-absorbing layer 14 made of a metal compound. The embodiment shown in FIG. 2 is similar to the embodiment in FIG. 丨, and the coated glass 2 includes a glass substrate 21 (usually transparent floating glass) and a coating 22. However, the coating 22 is different from the coating 12 The reason is that in addition to the low-emissivity layer 23 and a heat-absorbing layer 24 composed of a metal compound, a layer of iridescence suppression layer 25 is added, which will be further described below. Figure 3 shows a piece of coated glass 1 from Figure 1 combined with another piece of window material 31 (usually transparent floating glass) in a parallel spaced manner. The space between them and the seal are formed by a spaced sealing system 32. It becomes a double glazing unit 3 including an air gap 33. The coating 12 faces the air gap 33. In order to increase the efficiency, the absorption wavelength of the endothermic layer is preferably at least 700 nm 'and it is preferable that it does not substantially absorb the visible spectrum. This heat-absorbing layer can be a layer of this paper. Applicable to China National Standards (CNS) A4 Na (2 丨 〇 > < 297 mm) ^, 0pack—1T ------- # (Please read the back first Please pay attention to this page, please fill in this page) A7 B7 Printed by the consumer cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs. 5. Description of the invention (3) Almost transparent and conductive oxides, of which tungsten oxide is the best, because of its absorption peak Appears near 900 nanometers. Tungsten oxide exists in both conductive and non-conductive states. Stoichiometric tungsten oxide, WO3 is a non-conductive substance and does not substantially absorb the near and far infrared rays. Non-stoichiometric tungsten oxide, W03_x, where x is usually not greater than 0-03 (preferably in the range of 0 005 to 0 025); and tungsten oxide containing impurities, which contains appropriate different electricity prices such as hydrogen, fluorine or metallurgical group Metal impurities are all conductive and suitable for use in the present invention. The tungsten oxide layer used as the heat insulation layer can be crystalline or has no fixed shape. If it is used, it is usually best to avoid using too large crystals, because large crystals will cause opacity. Other heat absorbing materials that can be used as the heat absorbing layer include other metal oxides' such as cobalt oxide, chromium oxide, iron oxide and vanadium oxide, or a mixture of the above metal oxides. The thickness of the endothermic layer is usually between 50 and 500 nanometers, with nanometers to 200 nanometers being the most common. The low-emissivity layer is a metal compound, usually a metal oxide (because low-emissivity metal nitrides or metal silicides will reduce light transmission), and a transparent semiconductor such as indium, tin, or zinc with impurities . It is usually tin-doped steel and fluorine-doped tin oxide. The thickness of the low emissivity layer is suspended between 1GG nanometers and nanometers (because an excessively thick low emissivity layer will cause an unnecessary reduction in light transmission and cannot reduce the emissivity to make up for the effect of reduced transmission), and Nanometers to nanometers are most common. The low emissivity of the low-emissivity layer can be less than 〇4 (herein, the application and application — “------- install— (read the precautions on the back before filling in this page)-Order I-€ -6- Civil paper scale 1 -i! I--I Is— · .s A7 Printed by the Consumers' Cooperative Bureau of the Ministry of Economic Affairs of the Central Government of the People's Republic of China. 5. Description of the invention (4 = radioactive value in the range-general emissivity value It is based on the standard low discharge material of rib 1'2: 1994, Annex A _, but the emissivity of the low emissivity layer is usually lower than 0. The low emissivity layer in the coating is usually coated on the endothermic layer. And the coating surface of sunlight glass is installed on the inner surface of the window space (usually a building, but not necessarily so). The thin layer used in the present invention may cause interference with color or cylinder The appearance of color. In order to avoid or mitigate this interference phenomenon, you can add a color suppression layer (the pot can be called a coating-) to the two layers before combining the absorption layer and low emissivity layer to the glass substrate. Below, the composition and combination method of this color suppressing layer have been described in the previously published patents (GB 2307, Receive 211.5 delete and Ep〇275 662B). Therefore, according to the preferred embodiment of the present invention, it can be mixed under the coating composed of the absorbing and low discharge layer-color suppression layer or other thin layers. The additional thin layers such as An anti-reflection layer can also be added on top of the coating, but this additional coating often results in loss of low emissivity properties, that is, increased radioactivity, so this layer is often not added. The heat-absorbing layer and low emission in the present invention The rate layer can be bonded to the glass substrate using known techniques such as hybrid (including reactive sputtering) or chemical vapor deposition. In fact, the present invention provides an important advantage that both of the above layers allow Chemical vapor deposition provides the possibility to add coatings to hot ribbon glass during the glass manufacturing process. Chemical vapor deposition to deposit endothermic layers can be found in EP 0 523 877 A1 and EP 〇 546 669 B1 'Chemical vapor deposition method for depositing low-emissivity layers of metal oxides
I 訂 © 本紙張尺度適用中國國家標準（CNS ) M規格（210X297公釐 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（5 ) 可見於 GB 2 026 454B 及 EP 0 365 239B。 本發明含下列實施例，但並不表示本發明僅限於這些實 施例而已。在實施例以及其後的說明及申請專利範圍中所 述之可見光透射測量值是以發光體C為光源。所述之總曰 光熱能透射值是與曰光光譜輻射函數（ASTM E87-891 )計 算而得，此函數代表在北緯37度之直射地表之正常入射輻 射值（大氣量1.5)。 實施例一 一厚3公釐之帶狀透明浮式玻璃上塗覆一層厚度為65 奈米，由石夕.、礙及氧組成之反射指數約1.7的虹彩抑制層， 方法如EP 0 275 662B所述。 自上述帶狀玻璃切下一塊玻璃板，並於上述虹彩抑制層 上以傳統直流電磁濺鍍法塗覆一層厚約100奈米，含氫之 氧化鎢吸熱層，此吸熱層在910奈米時有70%的吸收峰 (測量值得自僅含吸熱層之3毫米厚之透明浮式玻璃）。 一層厚約265奈米的氧化銦錫層以傳統直流電磁控管沉 積法被加在上述兩層上，沉積時作為標把的銦和錫中錫佔 10原子％，此層用來做為低放射率層，其電阻為4 X 1〇-4歐 姆·公分。 最後之塗層玻璃板具有下列性質： 可見光穿透率 70.4% 總曰光熱能穿透率 55.9% 將上述塗層玻璃組合到另一厚度為3毫米之無塗層透明 浮式玻璃，使之成為兩玻璃板距離12毫米，中間為含空氣 本紙張尺度適用中國國家標隼（CNS ) A4規格（210X297公釐） ---------------:--1:.-.衣-----—訂-------©. (請先鬩讀背面之注意事項再填寫本頁) 空間且塗層面朝向此空間的雙鑲窗單元後，此雙鑲窗單元 之可見光穿透率為64%，總曰光熱能穿透率為44%，而經 以發光體C進行色彩反射及透射測試後得到·· a* b* L* 反射 -5.2 -5.1 46 透射 -2.9 1.2 84 實施例二 69% 54% A7 B7 五、發明説明（6 ) 一片厚3毫米之帶狀透明浮式玻璃上覆一層厚25奈米 且不含其它物質的氧化錫再加上一層厚度亦為25奈米之矽 土組成虹彩抑制層。 自上述帶狀玻璃切下一塊玻璃板，並於上述虹彩抑制層 上以傳統直流電磁濺鍍塗覆一層厚約42〇奈米，雜有鋰之 氧化鎮吸熱層，此吸熱層在91G奈米時有7()%的吸收峰 (測量值得自僅含吸熱層之3毫米厚之透明浮式玻璃）。 -層厚約85奈米的氧化銦錫層以傳統直流電磁控管沉 積法被加在上述兩層上，沉積時作為標靶的銦和錫中錫佔 ίο原子％’此層絲做為低放射率層，其電阻功為4 χ ΐ〇4 歐姆·公分。 最後之塗層玻璃板具有下列性質： 可見光穿透率 總曰光熱能穿透率 將上述塗層玻璃與另-厚度為3毫米之無塗層透明 破璃鑲裝至雙鑲窗單元3，並使兩_板中有12毫米之空 氣間隙，且塗層面朝向此线間隙的雙鑲窗單元後，此$ -9- 本紙張尺度適财關家鮮（CNS ) A4· ( 21GX297公董} (請先聞讀背面之注意事項再填寫本頁}I order © This paper size applies to Chinese National Standard (CNS) M specifications (210X297 mm printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, printed A7 B7 V. Invention Description (5) can be found in GB 2 026 454B and EP 0 365 239B. The present invention includes the following examples, but it does not mean that the present invention is limited to these examples. The visible light transmission measurement values described in the examples and the subsequent description and the scope of the patent application are based on the illuminant C as the light source. The total light and heat energy transmission value is calculated from the light spectral radiation function (ASTM E87-891), which represents the normal incident radiation value (atmospheric quantity 1.5) at 37 degrees north latitude directly on the ground. Example 1 Thickness A 3 mm strip-shaped transparent floating glass is coated with an iridescent suppression layer with a thickness of 65 nm and a reflection index of about 1.7, which is composed of Shi Xi. It interferes with oxygen, as described in EP 0 275 662B. A glass plate is cut out from the glass, and a conventional DC electromagnetic sputtering method is applied on the iridescent suppression layer to coat a layer of about 100 nanometers thick and hydrogen-containing tungsten oxide heat-absorbing layer. The heat-absorbing layer is 70% at 910 nanometers. Suck Peak closing (measured from 3 mm thick transparent floating glass with only endothermic layer). A layer of indium tin oxide with a thickness of about 265 nanometers was added to the two layers by the traditional DC electromagnetic tube deposition method. As the target, indium and tin account for 10 atomic% of tin. This layer is used as a low-emissivity layer with a resistance of 4 X 10-4 ohm · cm. The final coated glass plate has the following properties: Visible light penetration Transmission rate 70.4% Total light and heat energy transmission rate 55.9% Combine the above-mentioned coated glass to another uncoated transparent floating glass with a thickness of 3 mm, making it a distance of 12 mm between the two glass plates, with the air containing the middle Paper size applies to China National Standard (CNS) A4 (210X297mm) ---------------:-1: .-. ----- ©. (Please read the precautions on the back before filling this page) After the double glazing unit with space and the coating side facing this space, the visible light transmittance of this double glazing unit is 64%, The total light and heat energy transmission rate is 44%, and it is obtained after the color reflection and transmission test with illuminant C. a * b * L * reflection -5.2 -5.1 46 transmission -2.9 1.2 84 Example 2 69% 54% A7 B7 V. Description of the invention (6) A piece of strip-shaped transparent floating glass with a thickness of 3 mm is coated with a layer of tin oxide with a thickness of 25 nanometers and no other substances, plus a layer of 25 Nano-silica constitutes an iridescent suppression layer. A glass plate is cut from the band glass, and a conventional DC electromagnetic sputtering coating is applied on the iridescent suppression layer to a thickness of about 42 nm, which is mixed with an oxidation town of lithium. An endothermic layer. This endothermic layer has an absorption peak of 7 ()% at 91G nanometers (measured from 3 mm thick transparent floating glass containing only the endothermic layer). -An indium tin oxide layer with a thickness of about 85 nanometers is added to the above two layers by the traditional DC electromagnetic tube deposition method. The indium and tin used as the target during the deposition account for the atomic%. This layer of wire is low. The emissivity layer has a resistance work of 4 χ ΐ04 ohm · cm. The final coated glass plate has the following properties: Visible light transmittance, total light and heat energy transmittance. The above-mentioned coated glass and another uncoated transparent broken glass with a thickness of 3 mm are mounted on the double glazing unit 3, and After making the 12 mm air gap in the two boards, and the coating side faces the double glazing unit with this line gap, this $ -9- this paper size is suitable for financial and family (CNS) A4 · (21GX297 公 董} (Please read the notes on the back before filling this page}
經濟部中央標準局員工消費合作社印製 ；Β^〇ϋβ Α7 ---------------Β7 五、發明説明（7 ) 鑲自單元之可見光穿透率為63%，總日光熱能穿透率為 41/。’而經以發光體c進行色彩反射及透射測試後得到： a* b* L* 反射 -3.6 -3.3 90 透射 -9.3 5.1 84 本發明之塗層比以往的發明提供了重要的優點。由於是 以熱分解方法製造的（使之附帶有可直接在線上製造的好 處），所以產物較為耐用，可減少在以往操作和加工時所 需的特別保護，並且可使得使用此種無直立鑲窗塗層時不 需額外增加鑲窗單元保護。與膚色玻璃相較，此種塗層的 盈處是可以較具變化性的技術製造（塗層），無須更改玻 璃熔缸中的成分，且可以避免在較高效能膚色玻璃上所產 生的明顯的綠光。 除此之外，此種塗層亦具有傑出的效能，與玻璃結合後. 有67%以上的可見光能透射而總日光熱能則僅有57%以下 能透射。一般來說，本發明中的曰光控制覆罩具有將總曰 光熱能透射比例降到至少低於可見光透射比例1〇%以上， 而鑲窗已可降低總日光熱能透射比例至少12%以下（當使 用雙鑲窗單元則至少15%以下）。 此發明中所述之塗層玻璃在塗層面有反射（由塗層面觀 看時）和透射色彩，其（a*2 + b*2)1/2小於12，尤其小於 1〇。更具體的來說，反射和透射色彩兩者各自的（a*2 + 〇 1/2 b* ) 都小於7。 -10- 本紙張尺度適用中國國家標準（CNS ) A4規格（21.0X297公釐） j---„--------^!:,μ衣-- -» (讀先聞讀背面之注意事項再填寫本頁) II 訂一------®- 0 n^— nn Β82ΰΰ6 五、發明説明（8 ) 元件標號對照表 1,2塗層玻璃 12,22塗層 14,24_吸熱層 31鑲窗材料 33空氣間隙 11，21玻璃基材 13,23低放射率層 25虹彩抑制層 3鑲窗單元 ..—ί---------- -. -f- (讀先閱讀背面之注意事項再填寫本頁) 訂. 經濟部中央標準局員工消費合作社印製 -11- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29'7公釐）Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs; B ^ 〇ϋβ Α7 --------------- B7 V. Description of the invention (7) The visible light penetration rate of the unit is 63% , The total solar thermal energy transmission rate is 41 /. ′ After the color reflection and transmission test with the luminous body c, we get: a * b * L * reflection -3.6 -3.3 90 transmission -9.3 5.1 84 The coating of the present invention provides important advantages over previous inventions. Because it is manufactured by a thermal decomposition method (with the added benefit of being directly in-line), the product is more durable, reduces the special protection required in previous operations and processing, and allows the use of this non-upright insert No additional window protection is required for window coating. Compared with skin-colored glass, the benefits of this coating can be made with more variable technology (coating), without changing the composition in the glass melting tank, and it can avoid the obvious Green light. In addition, this coating also has outstanding efficiency. When combined with glass, more than 67% of visible light energy is transmitted and only 57% of total solar thermal energy is transmitted. Generally speaking, the light control cover in the present invention has the total light and heat energy transmission ratio reduced to at least 10% lower than the visible light transmission ratio, and the glazing can reduce the total sunlight and heat energy transmission ratio by at least 12%. (At least 15% when using double glazed units). The coated glass described in this invention has reflection (when viewed from the coating surface) and transmission color on the coating surface, and (a * 2 + b * 2) 1/2 is less than 12, especially less than 10. More specifically, each of the reflected and transmitted colors (a * 2 + 〇 1/2 b *) is less than 7. -10- This paper size applies to the Chinese National Standard (CNS) A4 specification (21.0X297 mm) j --- „-------- ^!:, Μ 衣--» (Read first and read the back Please pay attention to this page and fill in this page again) II Order one ------ ®- 0 n ^ — nn Β82 五 6 V. Description of the invention (8) Component reference table 1,2 Coated glass 12, 22 Coated 14, 24 _Heat absorption layer 31 Window material 33 Air gap 11, 21 Glass substrate 13, 23 Low emissivity layer 25 Iridescent suppression layer 3 Window unit ..— ί -----------. -F- (Read the precautions on the back before you fill in this page.) Order. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs -11- This paper size applies to China National Standard (CNS) A4 (210X29'7 mm)