JPH0743526A - Ir reflecting body, bulb, and bulb with reflecting mirror - Google Patents
Ir reflecting body, bulb, and bulb with reflecting mirrorInfo
- Publication number
- JPH0743526A JPH0743526A JP19050493A JP19050493A JPH0743526A JP H0743526 A JPH0743526 A JP H0743526A JP 19050493 A JP19050493 A JP 19050493A JP 19050493 A JP19050493 A JP 19050493A JP H0743526 A JPH0743526 A JP H0743526A
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- Prior art keywords
- infrared
- film
- transmittance
- reflecting
- wavelength
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は可視光を透過し、赤外線
を反射する赤外線反射膜に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infrared reflecting film which transmits visible light and reflects infrared light.
【０００２】[0002]
【従来の技術】可視光を透過し、赤外線を反射する赤外
反射膜がシ−ルドビ−ムランプ、ハロゲン電球等の照明
器具やビルの窓ガラス等に使用されている。この赤外反
射膜の１つとして、誘電体を多層に亘って積層した誘電
体多層膜（Ｔａ2 Ｏ5 ，ＴｉＯ2 −ＳｉＯ2 ）、導電性
酸化物膜（Ｉn2Ｏ3 ：Ｓｂ，ＳｎＯ2 ：Ｓｂ）、誘電体
金属複合膜（ＴｉＯ2 −Ａｇ−ＴｉＯ2 ）、金属化合物
膜（ＴｉＮ，ＣｒＮ，ＬａＢ6 ）等が利用されている。2. Description of the Related Art Infrared reflecting films that transmit visible light and reflect infrared rays are used for lighting equipment such as shield beam lamps, halogen bulbs, and window glass of buildings. As one of the infrared reflection films, a dielectric multilayer film (Ta 2 O 5 , TiO 2 —SiO 2 ) in which dielectrics are stacked in multiple layers, a conductive oxide film (In 2 O 3 : Sb, SnO). 2 : Sb), a dielectric metal composite film (TiO 2 —Ag—TiO 2 ), a metal compound film (TiN, CrN, LaB 6 ) and the like are used.
【０００３】[0003]
【発明が解決しようとする課題】しかし、誘電体多層膜
は耐熱性は非常に高いが層数が８層以上必要であり、赤
外線のカット率は良好であるが、カット幅が狭いため、
全体として赤外線の反射率が低いとして問題がある。However, the dielectric multilayer film has a very high heat resistance, but the number of layers is required to be 8 or more, and the infrared cut rate is good, but the cut width is narrow, so
There is a problem because the reflectance of infrared rays is low as a whole.
【０００４】また、導電性酸化物膜は、１μm 付近から
なだらかに赤外線をカットするため、赤外線の反射率が
低い、耐熱性が低いという問題があり、また膜強度も弱
い。Further, since the conductive oxide film gently cuts infrared rays from around 1 μm, there are problems that the reflectance of infrared rays is low and the heat resistance is low, and the film strength is weak.
【０００５】さらに、誘電体金属複合膜は赤外線反射率
は高いが、可視光の透過率は80〜70％前後と低いという
問題があった。Further, the dielectric metal composite film has a high infrared reflectance, but has a problem that the visible light transmittance is low at around 80 to 70%.
【０００６】さらにまた、金属化合物は可視光域の透過
率が低く、着色して見えるという問題があった。Furthermore, there is a problem that the metal compound has a low transmittance in the visible light region and appears colored.
【０００７】そこで、これらの特性を鑑みて可視光の透
過率が低くても良い場合には、赤外反射膜として誘電体
金属複合膜、金属化合物膜が利用されている。Therefore, in view of these characteristics, when the visible light transmittance may be low, a dielectric metal composite film or a metal compound film is used as the infrared reflecting film.
【０００８】本発明は上記の点に鑑みてなされたもの
で、その目的は赤外線の反射率も良く、しかも可視光の
透過率も良く、耐熱性強度等の良好な赤外線反射膜を提
供することにある。The present invention has been made in view of the above points, and an object thereof is to provide an infrared reflective film having a good infrared reflectance, a good visible light transmittance, and a good heat resistance strength. It is in.
【０００９】[0009]
【課題を解決するための手段】請求項１に係わる赤外反
射構体は、基体と、この基体の表面に形成され、一辺が
赤外線カット波長の約１／２の長さである略正方形の穴
を複数有する金属化合物からなる赤外線反射体とを具備
することを特徴とする。An infrared reflecting structure according to a first aspect of the present invention comprises a base and a substantially square hole formed on the surface of the base, each side having a length of about ½ of the infrared cut wavelength. And an infrared reflector made of a metal compound having a plurality of.
【００１０】請求項２に係わる赤外線反射構体は、基体
と、この基体の表面に形成され、直径が赤外線カット波
長の約１／１．７１の長さである略円形の穴を複数有す
る金属化合物からなる赤外線反射体とを具備することを
特徴とする。An infrared reflecting structure according to a second aspect of the present invention is a metal compound having a base and a plurality of substantially circular holes formed on the surface of the base and having a diameter of about 1 / 1.71 of the infrared cut wavelength. And an infrared reflector consisting of.
【００１１】請求項３に係わる管球は、発光体が封装さ
れたガラスバルブと、このガラスバルブの表面に形成さ
れ、一辺が赤外線カット波長の約１／２の長さである略
正方形の穴を複数有する金属化合物からなる赤外線反射
体とを具備することを特徴とする。The tube according to claim 3 is a glass bulb in which a light emitting body is sealed, and a substantially square hole formed on the surface of the glass bulb and having one side having a length of about ½ of the infrared cut wavelength. And an infrared reflector made of a metal compound having a plurality of.
【００１２】請求項４に係わる反射鏡付管球は、発光体
が封装されてなる管球と、この管球から放射された光を
制御する反射鏡と、この反射鏡前面に配置されたカバ−
ガラスと、このカバ−ガラスの表面に形成され、一辺が
赤外線カット波長の約１／２の長さである略正方形の穴
を複数有する金属化合物からなる赤外線反射体とを具備
することを特徴とする。According to a fourth aspect of the present invention, there is provided a bulb with a reflecting mirror, wherein the luminous body is sealed, a reflecting mirror for controlling the light emitted from the bulb, and a cover arranged in front of the reflecting mirror. −
And an infrared reflector made of a metal compound, which is formed on the surface of the cover glass and has a plurality of substantially square holes each having a length of about ½ of the infrared cut wavelength. To do.
【００１３】請求項５に係わる管球の金属化合物からな
る赤外線反射体は薄膜であることを特徴とする。An infrared reflector made of a metal compound of a tube according to claim 5 is a thin film.
【００１４】[0014]
【作用】基体の表面に一辺が赤外線カット波長の約１／
２の長さである略正方形の穴を複数有する金属化合物か
らなる赤外線反射体を形成するようにしたので、可視光
を透過し、赤外線を効率良く反射することができる。[Function] One side of the surface of the substrate is about 1 / of the infrared cut wavelength
Since the infrared reflector made of a metal compound having a plurality of substantially square holes each having a length of 2 is formed, visible light can be transmitted and infrared rays can be efficiently reflected.
【００１５】[0015]
【実施例】以下図面を参照して本発明の一実施例に係わ
る赤外反射膜について説明する。図１は赤外反射膜の斜
視図、図２は１つ格子を示す斜視図、図３は本発明の赤
外反射膜の波長に対する透過率を示す図、図４及び図５
は導波管を伝わる電力を説明するための図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An infrared reflecting film according to an embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of an infrared reflecting film, FIG. 2 is a perspective view showing one grating, FIG. 3 is a diagram showing the transmittance of the infrared reflecting film of the present invention with respect to wavelength, FIGS. 4 and 5.
FIG. 4 is a diagram for explaining electric power transmitted through a waveguide.
【００１６】図１において、１はガラス基板である。こ
のガラス基板１上には赤外線の反射率の高く耐熱性、耐
久性の良好な金属化合物薄膜としてＴｉＮ膜２が格子状
に形成される。このＴｉＮ膜２は０．５μの厚さで形成
されており、ＴｉＮ膜２に囲まれるように一辺が０．４
μの正方形状の穴３が形成されている。ここで、ＴｉＮ
膜２の幅は０．１３μの幅を有する。In FIG. 1, reference numeral 1 is a glass substrate. On the glass substrate 1, a TiN film 2 is formed in a lattice shape as a metal compound thin film having a high infrared reflectance and good heat resistance and durability. The TiN film 2 is formed with a thickness of 0.5 μ, and one side is 0.4 so as to be surrounded by the TiN film 2.
A square hole 3 of μ is formed. Where TiN
The width of the membrane 2 has a width of 0.13μ.
【００１７】このように格子状にＴｉＮ膜２を形成する
方法としては、ガラス基板１上にＴｉＮ膜２をイオンプ
レ−ティング等で厚さ０．５μで形成し、その後フォト
エッチングにより格子状にＴｉＮ膜２を除去して穴３を
形成するようにしている。As a method of forming the TiN film 2 in a grid pattern as described above, the TiN film 2 is formed on the glass substrate 1 by ion plating to a thickness of 0.5 μ, and then the TiN film 2 is formed in a grid pattern by photoetching. The film 2 is removed to form the holes 3.
【００１８】ここで、上記導波管について一般的な説明
について説明する。導波管が図４（Ａ）、（Ｂ）及び図
５（Ａ）、（Ｂ）に示すような長方形の断面を持った中
空の管であるとすると、断面には図４（Ａ）、（Ｂ）及
び図５（Ａ）、（Ｂ）に電界、磁界を生じ、これらが管
内を進行し、エネルギ−は電界及び磁界により運ばれ、
電力が伝送される。このような場合には、導体に流れる
全電流を与えるだけでは、電磁界分布は定まらない。む
しろ、内部の電磁界分布に適合するように、導体表面の
電流あるいは電圧分布が定まるというべきで、エネルギ
−輸送の本体は全く空間の中に移ってしまう。Here, a general description of the above waveguide will be described. If the waveguide is a hollow tube having a rectangular cross section as shown in FIGS. 4 (A), (B) and FIGS. 5 (A), (B), the cross section shown in FIG. Electric fields and magnetic fields are generated in (B) and FIGS. 5 (A) and (B), and these travel in the tube, and energy is carried by the electric fields and magnetic fields.
Electric power is transmitted. In such a case, the electromagnetic field distribution cannot be determined only by giving the total current flowing through the conductor. Rather, the current or voltage distribution on the conductor surface should be determined so that it fits the electromagnetic field distribution inside, and the body of energy transport is completely transferred into space.
【００１９】しかし、この導波管に用いる周波数は波長
が管の大きさと同程度以下になる必要があり、周波数が
低ければ、静電界あるいは静磁界の分布状態になってし
まう。However, the frequency used for this waveguide must have a wavelength equal to or less than the size of the tube, and if the frequency is low, a static electric field or static magnetic field will be distributed.
【００２０】普通の電力工学に用いる周波数、あるいは
高周波数といってもそれ程波長の短くない周波数では、
やはり導体の電圧、電流によって定まる電界、磁界が発
生する。それゆえエネルギ−輸送の本体は電界、磁界に
あるけれども、それを導体の電圧、電流によって代表さ
せていると考えることができ、エネルギ−は線路の電
圧、電流によって運ばれるという考え方で一向さしつか
えがない。At a frequency used for ordinary power engineering, or at a high frequency, a wavelength whose wavelength is not so short,
After all, an electric field and a magnetic field are generated which are determined by the voltage and current of the conductor. Therefore, although the main body of energy transport is an electric field and a magnetic field, it can be considered that it is represented by the voltage and current of a conductor, and energy may be carried by the voltage and current of a line. Absent.
【００２１】ところで、光は電磁波であるため上述した
ようにしてエネルギ−が伝搬される。また、光が図２に
示すようにａ×ａの穴３に放射されると、Maxwell の電
磁方程式を境界条件（導体表面での電場及び磁場＝０）
の条件で解くと導波管として作用する。By the way, since light is an electromagnetic wave, energy is propagated as described above. In addition, when light is radiated into the axa hole 3 as shown in FIG. 2, Maxwell's electromagnetic equation is used as a boundary condition (electric field and magnetic field on the conductor surface = 0).
When it is solved under the condition of, it acts as a waveguide.
【００２２】ここで、Maxwell の電磁方程式には波数ｋ
＝角周波数／速度（波長に比例する）の制限条件があ
り、特定波長域は透過し、特定波長域はカットする。す
なわち、特定波長λ＝ａ／２を境にそれ以上は内面反射
して透過せず、それ以下は透過されることになる。Here, in Maxwell's electromagnetic equation, the wave number k
= There is a limit condition of angular frequency / velocity (proportional to wavelength), and the specific wavelength range is transmitted and the specific wavelength range is cut. That is, when the specific wavelength λ = a / 2 is used as a boundary, the inner wavelength is not reflected and transmitted beyond that, and the lower wavelength is transmitted.
【００２３】つまり、図３に示すように、赤外線カット
波長は０．８μであり、その波長の半分（つまり、０．
４μ）を穴３の一辺の長さａとすることにより、０．８
μ以上の波長の赤外線を反射し、０．８μ以下の可視光
を透過させることができる。図３はＴｉＮ膜２のみの透
過特性及び実施例の透過特性を示している。この実施例
では、可視透過率は８０％以上で、しかも赤外線をほぼ
カットし良好な特性が得られている。ここで、全体の透
過率は穴３からの透過光と金属化合物膜としてのＴｉＮ
膜２を通しての透過光の和となるので、金属化合物膜上
に可視光の反射を防止するためのＳｉＯ2 層を設けるよ
うにして、可視透過率を一層改善することができる。That is, as shown in FIG. 3, the infrared cut wavelength is 0.8 μ, which is half the wavelength (that is, 0 ..
4 μ) as the length a of one side of the hole 3
It can reflect infrared light having a wavelength of μ or more and transmit visible light of 0.8 μ or less. FIG. 3 shows the transmission characteristics of only the TiN film 2 and the transmission characteristics of the embodiment. In this embodiment, the visible transmittance is 80% or more, and the infrared rays are almost cut off, and good characteristics are obtained. Here, the total transmittance is the light transmitted through the hole 3 and TiN as the metal compound film.
Since it is the sum of the transmitted light through the film 2, the visible transmittance can be further improved by providing a SiO 2 layer for preventing the reflection of visible light on the metal compound film.
【００２４】ところで、金属化合物は、赤外線の反射率
が高いものであれば良いが、全体の透過率は金属化合物
の透過光の影響を受けるので、可視光をなるべく透過す
る量が多いほど良く、波長選択性を有するＴｉＮ，Ｃｒ
Ｎ等，ＬａＢ6 ，ＴｉＢ2 等のように可視光の一部を透
過させる材料が適しており、Ａｌ，Ａｇ等の金属を利用
するより全体の透過率が高く耐熱性及び強度が良好なも
のを得ることができる。By the way, the metal compound may have a high infrared reflectance, but since the overall transmittance is affected by the transmitted light of the metal compound, the larger the amount of visible light transmitted, the better. TiN, Cr with wavelength selectivity
Materials such as N, LaB 6 , TiB 2 etc. that transmit a part of visible light are suitable, and have higher overall transmittance and better heat resistance and strength than the use of metals such as Al and Ag. Can be obtained.
【００２５】また、本実施例の赤外線反射膜は図６及び
図７に示すようなハロゲン電球の前面ガラスの表面に形
成される。図６のハロゲン電球は、前述したようによう
素、臭素、塩素などのハロゲンと、アルゴン、窒素など
の希ガスが封入された石英バルブ１１、石英バルブ１１
の封止部１２、タングステン線などからなるコイルフィ
ラメント１３、タングステン線などからなる内部リ−ド
線１４、モリブデン箔などからなる金属箔導体１５、外
部リ−ド線１６、アンカ−線１７およびビ−ドガラス１
８、赤外線反射膜１９を有している。The infrared reflecting film of this embodiment is formed on the surface of the front glass of the halogen bulb as shown in FIGS. 6 and 7. As described above, the halogen bulb of FIG. 6 has a quartz bulb 11 and a quartz bulb 11 in which halogens such as iodine, bromine and chlorine and rare gases such as argon and nitrogen are enclosed.
, A coil filament 13 made of a tungsten wire, an internal lead wire 14 made of a tungsten wire, a metal foil conductor 15 made of a molybdenum foil, an external lead wire 16, an anchor wire 17 and a wire. -Douglas 1
8 has an infrared reflection film 19.
【００２６】また、図７のハロゲン電球は、ガラス基体
２１、ダイクロックミラ−２３、ハロゲン電球２４、フ
ィラメント２５、ダイロックミラ−２３の前面に配置す
るカバ−ガラス２６、このカバ−ガラス２６の表面に形
成された赤外線反射膜２７を有している。The halogen bulb shown in FIG. 7 has a glass substrate 21, a dichroic mirror 23, a halogen bulb 24, a filament 25, a cover glass 26 arranged in front of the die lock mirror 23, and a cover glass 26. It has an infrared reflection film 27 formed on the surface.
【００２７】なお、上記実施例ではガラス基板１上に正
方形の穴を有する金属窒化物の薄膜を形成するようにし
て、ガラス基板１上にマトリクス状に直径が０．４μの
穴を有する金属窒化膜の薄膜を形成ようにしても良く、
その穴は三角形であっても良い。In the above embodiment, a metal nitride thin film having square holes is formed on the glass substrate 1 to form a metal nitride film having 0.4 μm diameter holes on the glass substrate 1. A thin film may be formed,
The hole may be triangular.
【００２８】[0028]
【発明の効果】以上詳述したように本発明によれば、基
体と、この基体の表面に形成され、一辺が赤外線カット
波長の約１／２の長さである略正方形の穴を複数有する
金属化合物からなる赤外線反射体を備えているので、可
視透過率は８０％以上で、しかも赤外線をほぼカット
し、しかも耐熱性及び耐久性の良好な赤外線反射膜を提
供することができる。As described above in detail, according to the present invention, a substrate and a plurality of substantially square holes formed on the surface of the substrate, each side having a length of about 1/2 of the infrared cut wavelength, are provided. Since the infrared reflector made of a metal compound is provided, it is possible to provide an infrared reflective film having a visible transmittance of 80% or more, substantially blocking infrared rays, and having excellent heat resistance and durability.
【図１】本発明の一実施例に係わる赤外反射膜の斜視
図。FIG. 1 is a perspective view of an infrared reflective film according to an embodiment of the present invention.
【図２】１つ格子を示す斜視図。FIG. 2 is a perspective view showing one lattice.
【図３】本発明の赤外反射膜の波長に対する透過率を示
す図。FIG. 3 is a graph showing the transmittance of the infrared reflective film of the present invention with respect to wavelength.
【図４】導波管を伝わる電力を説明するための図。FIG. 4 is a diagram for explaining electric power transmitted through a waveguide.
【図５】導波管を伝わる電力を説明するための図。FIG. 5 is a diagram for explaining electric power transmitted through a waveguide.
【図６】ハロゲン電球の断面図。FIG. 6 is a sectional view of a halogen bulb.
【図７】ハロゲン電球の断面図。FIG. 7 is a sectional view of a halogen bulb.
１…ガラス基板、２…ＴｉＮ膜、３…穴 1 ... Glass substrate, 2 ... TiN film, 3 ... Hole
Claims (5)
約１／２の長さである略正方形の穴を複数有する金属化
合物からなる赤外線反射体と、を具備することを特徴と
する赤外線反射構体。1. An infrared reflector comprising a base and a metallic compound formed on the surface of the base and having a plurality of substantially square holes each having a length of about ½ of an infrared cut wavelength. Infrared reflecting structure characterized by that.
約１／１．７１の長さである略円形の穴を複数有する金
属化合物からなる赤外線反射体と、を具備することを特
徴とする赤外線反射構体。2. An infrared reflector comprising a metal compound, which is formed on the surface of the substrate and has a plurality of substantially circular holes each having a diameter of about 1 / 1.71 of an infrared cut wavelength. An infrared reflecting structure characterized by being provided.
ト波長の約１／２の長さである略正方形の穴を複数有す
る金属化合物からなる赤外線反射体と、を具備すること
を特徴とする管球。3. A glass bulb in which a light emitting body is sealed, and a metal compound formed on the surface of the glass bulb and having a plurality of substantially square holes each having a length of about 1/2 of an infrared cut wavelength. An infrared ray reflector, and a tube.
ト波長の約１／２の長さである略正方形の穴を複数有す
る金属化合物からなる赤外線反射体と、を具備すること
を特徴とする反射鏡付管球。4. A tube in which a luminous body is sealed, a reflecting mirror for controlling light emitted from the tube, a cover glass arranged in front of the reflecting mirror, and a surface of the cover glass. And an infrared reflector made of a metal compound having a plurality of substantially square holes each having a length of about ½ of an infrared cut wavelength, the infrared reflector having a mirror.
は、薄膜であることを特徴とする請求項３記載の管球。5. The tube according to claim 3, wherein the infrared reflector made of the metal compound is a thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19050493A JPH0743526A (en) | 1993-07-30 | 1993-07-30 | Ir reflecting body, bulb, and bulb with reflecting mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19050493A JPH0743526A (en) | 1993-07-30 | 1993-07-30 | Ir reflecting body, bulb, and bulb with reflecting mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0743526A true JPH0743526A (en) | 1995-02-14 |
Family
ID=16259196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19050493A Pending JPH0743526A (en) | 1993-07-30 | 1993-07-30 | Ir reflecting body, bulb, and bulb with reflecting mirror |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743526A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006515681A (en) * | 2002-10-10 | 2006-06-01 | グラヴルベル | Hydrophilic reflective article |
| WO2007023691A1 (en) * | 2005-08-26 | 2007-03-01 | Matsushita Electric Industrial Co., Ltd. | Reflector and device having the reflector |
| WO2008142208A1 (en) * | 2007-05-22 | 2008-11-27 | Beneq Oy | Infrared radiation reflecting glass |
| JP2010021543A (en) * | 2008-06-12 | 2010-01-28 | Komatsu Ltd | Extreme ultra violet light source apparatus |
| JP2010085917A (en) * | 2008-10-02 | 2010-04-15 | Asahi Kasei E-Materials Corp | Transparent heat-ray reflecting film and heat-ray shielding windowpane using the same |
| JP2010243981A (en) * | 2009-04-10 | 2010-10-28 | Asahi Kasei Corp | Transparent heat ray reflection sheet and heat ray shielding window glass using the same |
| JP2010539554A (en) * | 2007-09-19 | 2010-12-16 | レイブンブリック，エルエルシー | Low-emission film for windows incorporating nanoscale wire grids |
| US10247936B2 (en) | 2009-04-10 | 2019-04-02 | Ravenbrick Llc | Thermally switched optical filter incorporating a guest-host architecture |
-
1993
- 1993-07-30 JP JP19050493A patent/JPH0743526A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006515681A (en) * | 2002-10-10 | 2006-06-01 | グラヴルベル | Hydrophilic reflective article |
| WO2007023691A1 (en) * | 2005-08-26 | 2007-03-01 | Matsushita Electric Industrial Co., Ltd. | Reflector and device having the reflector |
| US8559101B2 (en) | 2005-08-26 | 2013-10-15 | Panasonic Corporation | Reflector and apparatus including the reflector |
| WO2008142208A1 (en) * | 2007-05-22 | 2008-11-27 | Beneq Oy | Infrared radiation reflecting glass |
| JP2010539554A (en) * | 2007-09-19 | 2010-12-16 | レイブンブリック，エルエルシー | Low-emission film for windows incorporating nanoscale wire grids |
| JP2010021543A (en) * | 2008-06-12 | 2010-01-28 | Komatsu Ltd | Extreme ultra violet light source apparatus |
| JP2010085917A (en) * | 2008-10-02 | 2010-04-15 | Asahi Kasei E-Materials Corp | Transparent heat-ray reflecting film and heat-ray shielding windowpane using the same |
| JP2010243981A (en) * | 2009-04-10 | 2010-10-28 | Asahi Kasei Corp | Transparent heat ray reflection sheet and heat ray shielding window glass using the same |
| US10247936B2 (en) | 2009-04-10 | 2019-04-02 | Ravenbrick Llc | Thermally switched optical filter incorporating a guest-host architecture |
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