JPH04104918A - Near infrared absorbing glass - Google Patents
Near infrared absorbing glassInfo
- Publication number
- JPH04104918A JPH04104918A JP22005790A JP22005790A JPH04104918A JP H04104918 A JPH04104918 A JP H04104918A JP 22005790 A JP22005790 A JP 22005790A JP 22005790 A JP22005790 A JP 22005790A JP H04104918 A JPH04104918 A JP H04104918A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- total amount
- infrared absorbing
- near infrared
- li2o
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 42
- 238000002834 transmittance Methods 0.000 abstract description 16
- 239000000126 substance Substances 0.000 abstract description 13
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract description 5
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 abstract description 5
- 239000005365 phosphate glass Substances 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 abstract 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 abstract 1
- NOTVAPJNGZMVSD-UHFFFAOYSA-N potassium monoxide Inorganic materials [K]O[K] NOTVAPJNGZMVSD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000004031 devitrification Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 101100348017 Drosophila melanogaster Nazo gene Proteins 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
- C03C3/17—Silica-free oxide glass compositions containing phosphorus containing aluminium or beryllium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は一般のカメラおよびＶＴＲカメラ等の色補正用
フィルターガラスとして使用される近赤外吸収ガラスに
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a near-infrared absorbing glass used as a color correction filter glass for general cameras and VTR cameras.
［従来の技術］
一般のカメラおよびＶＴＲカメラ等に使用されている撮
像管あるいは撮像素子は、４００ ｎｍから１１０００
ｎ付近までの波長の光に対して分光感度を持っており、
しかも、その感度が可視域よりも近赤外域のほうが高い
という特徴を有している。従って、自然光がそのまま撮
像管や撮像素子に入射すると、画像が赤みを帯びてしま
い、良好な色再現を得ることができないので、近赤外域
の光を吸収するフィルターガラスを用いて撮像管や撮像
素子への入射光の色補正をする必要がある。[Prior Art] Image pickup tubes or image pickup elements used in general cameras and VTR cameras have wavelengths ranging from 400 nm to 11,000 nm.
It has spectral sensitivity to light with wavelengths up to around n.
Moreover, it has a characteristic that its sensitivity is higher in the near-infrared region than in the visible region. Therefore, if natural light directly enters the image pickup tube or image sensor, the image will have a reddish tinge, making it impossible to obtain good color reproduction. Therefore, filter glass that absorbs light in the near-infrared region is used to It is necessary to perform color correction on the light incident on the element.
従来より、上記色補正用フィルターとして、リン酸塩ガ
ラスにＣｕＯを添加したガラスが用いられている。この
フィルターガラスは、６００ｎｍから７００ｎｍの波長
域でシャープに光を吸収し、且つ、７００ｎｍ以上の波
長の光を透過させないことが必要であるが、そのような
シャープカット性を発現させるためにガラス中のＣｕＯ
含有量を多くすると、高い透過率が必要とされる４００
−５００ｎｍの波長域の透過率が下がってしまう傾向に
あった。また、リン酸を多量に含むガラスであるため、
化学的耐久性が不十分であり、長期にわたって使用する
場合の信頼性に欠けるという欠点を持っていた。Conventionally, glass obtained by adding CuO to phosphate glass has been used as the color correction filter. This filter glass needs to sharply absorb light in the wavelength range from 600 nm to 700 nm and not transmit light with a wavelength of 700 nm or more. of CuO
Higher content requires higher transmittance of 400
The transmittance in the -500 nm wavelength range tended to decrease. In addition, since the glass contains a large amount of phosphoric acid,
It had the drawback of insufficient chemical durability and lack of reliability when used over a long period of time.
［発明の解決しようとする課題］
本発明は、化学的耐久性に優れ、且つ、４００−５００
ｎｍの波長の光をよく透過し、しかも６００−７００ｎ
ｍの波長域で光をシャープに吸収するフィルターガラス
を提供することを目的とする。[Problems to be solved by the invention] The present invention has excellent chemical durability and
Transmits light with a wavelength of nm well, and also has a wavelength of 600-700n
The purpose of the present invention is to provide a filter glass that sharply absorbs light in the m wavelength range.
［課題を解決するための手段］
本発明は上記問題点を解決するためになされたものであ
り、重量百分率で実質的にＰ２Ｏ５６０−８０％、 Ａ
１．０．３−１１％、 ＢａＯ３−９，５％、 ＭｇＯ
＋ＣａＯ＋ＢａＯ＋ＳｒＯ３−２０％ Ｌｉ２０１−５
．５％、 ＬｉｚＯ＋ＮａｚＯ＋ＫｔＯ１−１０％、
５ｉｏ２＋ Ｂａ５ｓ Ｏ−５％、 ＺｒＣｈ＋ＴｉＯ
□＋ＹｚＯｓ＋ＬａｚＯｓＯ−５％、 Ｃｕ００．２−
１０％からなる近赤外吸収ガラスを提供するものである
。[Means for Solving the Problems] The present invention has been made to solve the above problems, and includes P2O560-80% by weight percentage, A
1.0.3-11%, BaO3-9.5%, MgO
+CaO+BaO+SrO3-20% Li201-5
．． 5%, LizO+NazO+KtO1-10%,
5io2+ Ba5s O-5%, ZrCh+TiO
□+YzOs+LazOsO-5%, Cu00.2-
10% of near-infrared absorbing glass.
本発明のガラス組成の限定理由を以下に述べる。The reasons for limiting the glass composition of the present invention will be described below.
Ｐ２Ｏ，は本ガラスにおいて網目を形成する主成分であ
るが、６０％以下では６００−７００ｎｍの波長域での
シャープな吸収が得られず、８０％以上ではガラスが失
透しやすくなり製造が著しく困難になるのでいづれも好
ましくない。ＡｌｚＯｓはガラスの化学的耐久性を向上
させるために、３％以上含有することが好ましいが、１
１％を越えると失透しやすくなるので好ましくない。Ｂ
ａＯとＬｉ２Ｏは、適切な量を共存させることによって
、４００−５００ｎｍ域での高い透過率と６００−７０
０ｒ＋ｍ域でのシャープな吸収を実現し、且つ、化学的
耐久性の優れたガラスを得ることができる。ＢａＯは３
％以下でも９．５％以上でも６００−７００ ｎｍの波
長域でのシャープな吸収が得られ難（なるので好ましく
ない。Ｌｉ２Ｏは溶解性を向上させ、且つ、シャープな
吸収特性を維持するために有効な成分であり、かかる効
果を発現させるために１％以上を含有することが好まし
い。一方、５，５％を越えると化学的耐久性が低下して
しまうので好ましくない。ＭｇＯ，Ｃａｂ、 ＳｒＯの
アルカリ土類金属酸化物は、ガラスの粘性調整並びに失
透抑制のためにＢａＯとの含量は５％以上が好ましいが
、その含量が２０％を越えるとシャープな吸収特性が損
なわれるので好ましくない。Ｎａ２１． Ｋ２Ｏのアル
カリ金属酸化物は、ガラスの溶解性を向上させ、且つ、
４００−５００ｎ−ｍ域の透過率を向上させるためにＬ
ｉＪとの含量が１％以上が好ましいが、１０％を越える
と化学的耐久性が低下してしまうので好ましくない。Ｓ
ｉＯ□およびＢ＊Ｏｓは化学的耐久性を一層向上させる
ために含有してもよいが、その含量が５％を越えるとシ
ャープな吸収特性が損なわれてしまうので好ましくない
。ＺｒＯ□、 ＴｉＯ□、ＹＪ３、Ｌａ２０ｇはガラス
の化学的耐久性を向上させるために含有させ得るが、そ
の含量が５％を越えると失透しやす（なるので好ましく
ない。ＣｕＯは近赤外光を吸収する成分として必須であ
り、０．２％以上含有させることによりその効果を発揮
することができるが、１０％を越えると４００−５００
ｎｍ域の透過率が低下してしまうので好ましくない。Ｃ
ｕＯの最適な含有量は、使用するフィルターガラスの厚
さによって異なるが、通常の０、５−３．０ｍｍ程度の
厚さの場合においては、０．５−５．０％程度の含有が
好ましい。P2O is the main component that forms the network in this glass, but if it is less than 60%, sharp absorption in the wavelength range of 600-700 nm cannot be obtained, and if it is more than 80%, the glass tends to devitrify, making it difficult to manufacture. Neither of these options is desirable as it will be difficult. AlzOs is preferably contained in an amount of 3% or more in order to improve the chemical durability of the glass.
If it exceeds 1%, devitrification tends to occur, which is not preferable. B
By coexisting appropriate amounts of aO and Li2O, high transmittance in the 400-500 nm region and 600-70 nm can be achieved.
Glass that achieves sharp absorption in the 0r+m region and has excellent chemical durability can be obtained. BaO is 3
If it is less than 9.5% or more than 9.5%, it is difficult to obtain sharp absorption in the wavelength range of 600-700 nm, so it is not preferable.Li2O is used to improve solubility and maintain sharp absorption characteristics. It is an effective component, and it is preferable to contain it in an amount of 1% or more in order to exhibit such an effect.On the other hand, if it exceeds 5.5%, it is not preferable because chemical durability decreases.MgO, Cab, SrO The content of the alkaline earth metal oxide with BaO is preferably 5% or more in order to adjust the viscosity of the glass and suppress devitrification, but if the content exceeds 20%, the sharp absorption characteristics will be impaired, so it is not preferable. The alkali metal oxide of Na21.K2O improves the solubility of glass and
L to improve transmittance in the 400-500nm range
It is preferable that the content with iJ is 1% or more, but if it exceeds 10%, it is not preferable because chemical durability will decrease. S
Although iO□ and B*Os may be contained in order to further improve chemical durability, if their content exceeds 5%, the sharp absorption characteristics will be impaired, which is not preferable. ZrO□, TiO□, YJ3, and 20 g of La can be included to improve the chemical durability of the glass, but if their content exceeds 5%, it tends to devitrify (this is not preferable.CuO is not suitable for near-infrared light) It is essential as a component that absorbs
This is not preferable because the transmittance in the nm range decreases. C
The optimal content of uO varies depending on the thickness of the filter glass used, but in the case of a normal thickness of about 0.5-3.0 mm, the content is preferably about 0.5-5.0%. .
［実施例］
目標組成のガラスが得られるように所定の原料を調合し
、白金坩堝で１１００−１４００℃の温度で２−５時間
溶解後、金型に鋳込み、徐冷することによって、次表に
示した実施例の各ガラスを得た。徐冷後のガラスブロッ
クを切断、研磨し、厚さ１ 、０ｍｍのガラス板を調整
し、分光透過率を測定した。また、上記ガラスブロック
の一部を粉砕して得た粉末ガラスを用い、日本光学硝子
工業会規格に規定された「光学ガラスの化学的耐久性の
測定方法（粉末法）」に準拠して耐水性試験行った。次
表には、このようにして測定した分光透過率の代表値、
および重量減少率（％）で表わした化学的耐久性試験結
果を、ガラス組成と共に記載した。尚、表中に記載した
全てのガラスについて、それらの５００ｎｍにおける分
光透過率は９０±０．５％であった。従って、７００ｎ
ｍにおける分光透過率の大小を近赤外域のシャープカッ
ト性の尺度とすることができる。[Example] Predetermined raw materials were prepared so as to obtain a glass having the target composition, melted in a platinum crucible at a temperature of 1100-1400°C for 2-5 hours, then poured into a mold and slowly cooled to obtain the glass with the following table. Each glass of the example shown in was obtained. The glass block after slow cooling was cut and polished to prepare a glass plate with a thickness of 1.0 mm, and the spectral transmittance was measured. In addition, using powdered glass obtained by crushing a part of the glass block mentioned above, we have made it water resistant in accordance with the "Method for Measuring Chemical Durability of Optical Glass (Powder Method)" stipulated in the standards of the Japan Optical Glass Industry Association. I did a sex test. The following table shows typical values of spectral transmittance measured in this way,
The chemical durability test results expressed in weight loss rate (%) are also listed together with the glass composition. In addition, the spectral transmittance at 500 nm of all the glasses listed in the table was 90±0.5%. Therefore, 700n
The magnitude of the spectral transmittance at m can be used as a measure of the sharp cut property in the near-infrared region.
−例として、実施例Ｎｏ、１並びに比較例Ｎｏ、１１の
分光透過率曲線を第１図に示す。５００ｎｍにおける透
過率は同等であるが、Ｎｏ、１１ガラスは７００ｎｍで
１１％の透過率を持っているのに対して、Ｎｏ、 ｌガ
ラスではわずか２％の透過率しか示さない。すなわち、
Ｎｏ、１ガラスの近赤外域でのシャープカット性がＮｏ
、１１ガラスよりも優れていることが分かる。表より、
本発明によるガラスがいづれも近赤外域での優れたシャ
ープな吸収特性を示し、且つ、化学的耐久性にも優れて
いることが分かる。- As an example, the spectral transmittance curves of Example No. 1 and Comparative Example No. 11 are shown in FIG. Although the transmittance at 500 nm is comparable, the No.11 glass has a transmittance of 11% at 700 nm, whereas the No.1 glass exhibits only a transmittance of 2%. That is,
No. 1 Glass has No. 1 sharp cut properties in the near-infrared region
, 11 glass. From the table,
It can be seen that all the glasses according to the present invention exhibit excellent sharp absorption characteristics in the near-infrared region and also have excellent chemical durability.
［発明の効果］
以上のように、本発明によればＣｕＯを含有したリン酸
塩ガラスにおいて、特定の含有量の範囲でＢａＯとＬｉ
ｘＯとを共存させることによって、４００−５００ｎｍ
域での高い透過率と６００−７００ｎｍ域でのシャープ
な吸収特性を実現し、且つ、化学的耐久性の優れたガラ
スを得ることができる効果がある。[Effects of the Invention] As described above, according to the present invention, in a phosphate glass containing CuO, BaO and Li can be contained within a specific content range.
By coexisting with xO, 400-500nm
This has the effect of realizing high transmittance in the wavelength range and sharp absorption characteristics in the 600-700 nm range, and also making it possible to obtain a glass with excellent chemical durability.
本発明によるガラスは、一般のカメラおよびＶＴＲカメ
ラ等に使用されている撮像管あるいは撮像素子の色補正
用フィルターとして最適なガラスである。The glass according to the present invention is optimal as a color correction filter for image pickup tubes or image pickup devices used in general cameras, VTR cameras, and the like.
第１図は、本発明のガラスおよび比較例のガラスの分光
透過率曲線を示す図である。
■・・・本発明のガラス（実施例Ｎｏ２．１ ）■・・
・比較例のガラス（比較例Ｎｏ、１１ ）１１コFIG. 1 is a diagram showing spectral transmittance curves of the glass of the present invention and the glass of a comparative example. ■... Glass of the present invention (Example No. 2.1) ■...
・11 glasses of comparative example (comparative example No. 11)
Claims (1)
＿２Ｏ＿３３−１１％、ＢａＯ３−９．５％、ＭｇＯ＋
ＣａＯ＋ＢａＯ＋ＳｒＯ３−２０％、Ｌｉ＿２Ｏ１−５
．５％、Ｌｉ＿２Ｏ＋Ｎａ＿２Ｏ＋Ｋ＿２Ｏ１−１０％
、ＳｉＯ＿２＋Ｂ＿２Ｏ＿３０−５％、ＺｒＯ＿２＋Ｔ
ｉＯ＿２＋Ｙ＿２Ｏ＿３＋Ｌａ＿２Ｏ＿３０−５％、Ｃ
ｕＯ０．２−１０％からなる近赤外吸収ガラス。Substantially P_2O_560-80% by weight percentage, Al
_2O_33-11%, BaO3-9.5%, MgO+
CaO+BaO+SrO3-20%, Li_2O1-5
．． 5%, Li_2O+Na_2O+K_2O1-10%
, SiO_2+B_2O_30-5%, ZrO_2+T
iO_2+Y_2O_3+La_2O_30-5%, C
Near-infrared absorbing glass consisting of 0.2-10% uO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22005790A JPH04104918A (en) | 1990-08-23 | 1990-08-23 | Near infrared absorbing glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22005790A JPH04104918A (en) | 1990-08-23 | 1990-08-23 | Near infrared absorbing glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04104918A true JPH04104918A (en) | 1992-04-07 |
Family
ID=16745262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22005790A Pending JPH04104918A (en) | 1990-08-23 | 1990-08-23 | Near infrared absorbing glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04104918A (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0753945A (en) * | 1993-06-08 | 1995-02-28 | Asahi Glass Co Ltd | Near-infrared absorber |
| EP0779253A1 (en) * | 1995-12-12 | 1997-06-18 | Schott Glaswerke | Copper(II) oxide containing aluminophosphate glasses |
| US6225244B1 (en) | 1998-01-21 | 2001-05-01 | Hoya Corporation | Glass for near absorption filter and near infrared absorption filter to which the glass is applied |
| JP2006016293A (en) * | 2004-06-02 | 2006-01-19 | Ohara Inc | Optical glass |
| US7280145B2 (en) | 2002-07-30 | 2007-10-09 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit having an optical member that is vibrated to remove dust |
| US7324148B2 (en) | 2002-04-26 | 2008-01-29 | Olympus Optical Co., Ltd. | Camera and image pickup device unit used therefor having a sealing structure between a dust proofing member and an image pick up device |
| US7324149B2 (en) | 2002-05-20 | 2008-01-29 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit having an optical member that is vibrated to remove dust |
| US7339623B2 (en) | 2002-05-27 | 2008-03-04 | Olympus Optical Co., Ltd. | Camera and image pickup device unit which reduce influence of dust image quality |
| US7618909B2 (en) | 2003-09-04 | 2009-11-17 | Hoya Corporation | Precision press-molding preform, process for the production thereof, optical element and process for the production of the optical element |
| JP2011057554A (en) * | 2004-06-02 | 2011-03-24 | Ohara Inc | Optical glass |
| WO2011046155A1 (en) * | 2009-10-16 | 2011-04-21 | 旭硝子株式会社 | Near-infrared ray cut filter glass |
| JP2012224491A (en) * | 2011-04-18 | 2012-11-15 | Asahi Glass Co Ltd | Near-infrared ray cut filter glass |
| US20130222894A1 (en) * | 2012-02-29 | 2013-08-29 | Hon Hai Precision Industry Co., Ltd. | Infrared absorbing filter and lens module having same |
| CN104788019A (en) * | 2014-01-16 | 2015-07-22 | 成都光明光电股份有限公司 | Glass composition |
| WO2017154560A1 (en) * | 2016-03-09 | 2017-09-14 | 日本電気硝子株式会社 | Near-infrared absorption filter glass |
| JP2017165641A (en) * | 2016-03-09 | 2017-09-21 | 日本電気硝子株式会社 | Near-infrared absorption filter glass |
| WO2019044563A1 (en) * | 2017-08-31 | 2019-03-07 | Ａｇｃ株式会社 | Glass |
| JP2019038719A (en) * | 2017-08-25 | 2019-03-14 | 日本電気硝子株式会社 | Near-infrared radiation absorption glass |
| CN110194592A (en) * | 2019-06-25 | 2019-09-03 | 成都光明光电股份有限公司 | A kind of glass, glass elements and optical filter |
| CN110194589A (en) * | 2019-06-25 | 2019-09-03 | 成都光明光电股份有限公司 | Near-infrared absorption glass, glassware, element and optical filter |
| CN110255886A (en) * | 2019-06-25 | 2019-09-20 | 成都光明光电股份有限公司 | A kind of glass, glassware and its manufacturing method |
-
1990
- 1990-08-23 JP JP22005790A patent/JPH04104918A/en active Pending
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0753945A (en) * | 1993-06-08 | 1995-02-28 | Asahi Glass Co Ltd | Near-infrared absorber |
| EP0779253A1 (en) * | 1995-12-12 | 1997-06-18 | Schott Glaswerke | Copper(II) oxide containing aluminophosphate glasses |
| US5750448A (en) * | 1995-12-12 | 1998-05-12 | Schott Glaswerke | Copper(II) oxide-containing aluminophosphate glasses |
| US6225244B1 (en) | 1998-01-21 | 2001-05-01 | Hoya Corporation | Glass for near absorption filter and near infrared absorption filter to which the glass is applied |
| US7589780B2 (en) | 2002-04-26 | 2009-09-15 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit used therefor having a sealing structure between a dust-proofing member and an image pick-up device |
| US7324148B2 (en) | 2002-04-26 | 2008-01-29 | Olympus Optical Co., Ltd. | Camera and image pickup device unit used therefor having a sealing structure between a dust proofing member and an image pick up device |
| US7324149B2 (en) | 2002-05-20 | 2008-01-29 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit having an optical member that is vibrated to remove dust |
| US7339623B2 (en) | 2002-05-27 | 2008-03-04 | Olympus Optical Co., Ltd. | Camera and image pickup device unit which reduce influence of dust image quality |
| US7686524B2 (en) | 2002-07-30 | 2010-03-30 | Olympus Optical Co., Ltd. | Image pick-up device unit having a dust-proofing member that is vibrated to remove dust, the dust-proofing member being pressed by a spring pressing member toward a sealing structure that seals an interval between the dust-proofing member and an image pick-up device |
| US7280145B2 (en) | 2002-07-30 | 2007-10-09 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit having an optical member that is vibrated to remove dust |
| US7591598B2 (en) | 2002-07-30 | 2009-09-22 | Olympus Optical Co., Ltd. | Camera having a dust-proofing member that is vibrated to remove dust, the dust-proofing member being pressed by a spring pressing member toward a sealing part that seals a space between the dust-proofing member and an image pickup-device |
| US7618909B2 (en) | 2003-09-04 | 2009-11-17 | Hoya Corporation | Precision press-molding preform, process for the production thereof, optical element and process for the production of the optical element |
| US8466075B2 (en) | 2004-02-06 | 2013-06-18 | Kabushiki Kaisha Ohara | Optical glass |
| JP2011057554A (en) * | 2004-06-02 | 2011-03-24 | Ohara Inc | Optical glass |
| US8163665B2 (en) | 2004-06-02 | 2012-04-24 | Ohara, Inc. | Optical glass |
| JP2006016293A (en) * | 2004-06-02 | 2006-01-19 | Ohara Inc | Optical glass |
| JP5842613B2 (en) * | 2009-10-16 | 2016-01-13 | 旭硝子株式会社 | Near-infrared cut filter glass |
| WO2011046155A1 (en) * | 2009-10-16 | 2011-04-21 | 旭硝子株式会社 | Near-infrared ray cut filter glass |
| JP2012224491A (en) * | 2011-04-18 | 2012-11-15 | Asahi Glass Co Ltd | Near-infrared ray cut filter glass |
| US8623775B2 (en) * | 2012-02-29 | 2014-01-07 | Hon Hai Precision Industry Co., Ltd. | Infrared absorbing filter and lens module having same |
| US20130222894A1 (en) * | 2012-02-29 | 2013-08-29 | Hon Hai Precision Industry Co., Ltd. | Infrared absorbing filter and lens module having same |
| CN104788019A (en) * | 2014-01-16 | 2015-07-22 | 成都光明光电股份有限公司 | Glass composition |
| WO2017154560A1 (en) * | 2016-03-09 | 2017-09-14 | 日本電気硝子株式会社 | Near-infrared absorption filter glass |
| JP2017165641A (en) * | 2016-03-09 | 2017-09-21 | 日本電気硝子株式会社 | Near-infrared absorption filter glass |
| JP2019038719A (en) * | 2017-08-25 | 2019-03-14 | 日本電気硝子株式会社 | Near-infrared radiation absorption glass |
| WO2019044563A1 (en) * | 2017-08-31 | 2019-03-07 | Ａｇｃ株式会社 | Glass |
| JPWO2019044563A1 (en) * | 2017-08-31 | 2020-10-15 | Ａｇｃ株式会社 | Glass |
| CN110194592A (en) * | 2019-06-25 | 2019-09-03 | 成都光明光电股份有限公司 | A kind of glass, glass elements and optical filter |
| CN110194589A (en) * | 2019-06-25 | 2019-09-03 | 成都光明光电股份有限公司 | Near-infrared absorption glass, glassware, element and optical filter |
| CN110255886A (en) * | 2019-06-25 | 2019-09-20 | 成都光明光电股份有限公司 | A kind of glass, glassware and its manufacturing method |
| CN110194589B (en) * | 2019-06-25 | 2022-02-01 | 成都光明光电股份有限公司 | Near-infrared light absorbing glass, glass product, element and optical filter |
| CN110194592B (en) * | 2019-06-25 | 2022-04-15 | 成都光明光电股份有限公司 | Glass, glass element and optical filter |
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