Glass, glass elements, and filters

Abstract

The present invention provides a glass, the glass comprising the following cationic components in mole percent: 5+ : 51-72%, Al 3+ : 0~10%, Cu 2+ : 5~25%, Rn + : 5-25%, R 2+ : 1-18%, Ln 3+ : 0 to 8%, and the Rn + Li + , Na + , K + One or more of R 2+ is Mg 2+ , Ca 2+ , Sr 2+ , B.A. 2+ One or more of Ln 3+ La 3+ , Gd 3+ , Y 3+ The anion component is one or more of O 2- and F - Including O 2- and F - The total content of O 2- +F - By rationally designing the components, the glass obtained by the present invention has excellent intrinsic quality, excellent transmission characteristics in the visible range, and excellent absorption characteristics in the near infrared range.

Description

[Technical Field]

[0001] This invention relates to glass, and more particularly to near-infrared absorbing glass. [Background technology]

[0002] In recent years, the spectral sensitivity of semiconductor image sensors such as CCDs and CMOS used in digital cameras, camera phones, and VTR cameras has spread from the visible region to the near-infrared region, and by using filters that absorb light in the near-infrared region, visibility close to that of humans can be obtained. Generally, the wavelength of visible light perceived by the human eye is 400-700 nm, and by using filters that absorb near-infrared light, images with a brightness coefficient close to that of the human eye can be obtained. As the demand for filters for correcting human color sensitivity increases, the demand for near-infrared absorbing glass used in the manufacture of such filters also increases, and this type of glass is required to have excellent transmittance in the visible region and excellent absorption characteristics in the near-infrared region. Conventional near-infrared absorbing glass usually contains a large amount of fluorine (F - ) contains. For example, in Chinese Patent Application Publication No. 102656125, it is stated that when a large amount of fluorine is included, fluorine volatilizes during the glass melting process, making it easy for defects such as stripes and internal unevenness to occur in the glass, and making it difficult for the intrinsic quality of the glass to meet the requirements. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Chinese Patent Application Publication No. 102656125 Specification [Overview of the project] [Problems that the invention aims to solve]

[0004] As described above, the technical problem that the present invention aims to solve is to provide glass that has excellent intrinsic quality, excellent transmission characteristics in the visible region, and excellent absorption characteristics in the near-infrared region.

Means for Solving the Problem

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows. (1) Glass containing the following cation components in mol%: P 5+ : 51 - 72%, Al 3+ : 0 - 10%, Cu 2+ : 5 - 25%, Rn + : 5 - 25%, R 2+ : 1 - 18%, Ln 3+ : 0 - 8%, and the above Rn + is one or more of Li + , Na + , K + , and R 2+ is one or more of Mg 2+ , Ca 2+ , Sr 2+ , Ba 2+ , and Ln 3+ is one or more of La 3+ , Gd 3+ , Y 3+ , and the anion component contains O 2- and F - , and the total content of O 2- and F - is 98% or more.

[0006] (2) The glass according to (1), further containing the following cation components in mol%: Zn 2+ : 0 - 10%, and / or Si 4+ : 0 - 5%, and / or B 3+ : 0 - 5%, and / or Zr 4+ : 0 - 5%, and / or Sb 3+ +Sn 4+ +Ce 4+ : 0 - 1%.

[0007] (3) Glass composed of the following cation components in mol%: P 5+ : 51 - 72%, Al 3+ : 0 - 10%, Cu 2+ ​​​: 5~25%, Rn + : 5~25%, R 2+ :1~18%, Ln 3+ : 0-8%, Zn 2+ : 0~10%, Si 4+ : 0-5%, B 3+ : 0~5%, Zr 4+ : 0-5%, Sb 3+ +Sn 4+ +Ce 4+ : 0~1%, and the aforementioned Rn + is Li + na + , K + It is one or more types of R 2+ is Mg 2+ Ca 2+ Sr 2+ Ba 2+ It is one or more species, Ln 3+ is La 3+ , Gd 3+ , Y 3+ It is one or more types, and the anionic component is O 2- and F - That is the case.

[0008] (4) Glass containing the following components in mol% as described in any one of (1) to (3): Al 3+ / Ln 3+ is 0.2 or higher, preferably Al 3+ / Ln 3+ is 0.2 to 20.0, more preferably Al 3+ / Ln 3+ is 0.5 to 15.0, more preferably Al 3+ / Ln 3+ is 1.0 to 10.0, more preferably Al 3+ / Ln 3+ The range is 1.5 to 8.0.

[0009] (5) Glass containing the following components in mol% as described in any one of (1) to (4): Li + / ( Mg 2+ +Al 3+ ) is 0.4 to 10.0, preferably Li + / ( Mg 2+ +Al 3+) is 0.6 to 7.0, more preferably Li + / (Mg 2+ +Al 3+ ) is 1.0 to 5.0, more preferably Li + / (Mg 2+ +Al 3+ ) is 1.2 to 3.0.

[0010] (6) Glass according to any one of (1) to (5), containing the following components in mol%: Cu 2+ / Al 3+ is 1.0 to 15.0, preferably Cu 2+ / Al 3+ is 2.0 to 10.0, more preferably Cu 2+ / Al 3+ is 3.0 to 8.0, more preferably Cu 2+ / Al 3+ is 4.0 to 7.0.

[0011] (7) Glass according to any one of (1) to (6), containing the following components in mol%: (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ ) is 0.3 to 6.0, preferably (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ ) is 0.5 to 5.0, more preferably (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ ) is 0.7 to 3.0, more preferably (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ ) is 0.8 to 2.0.

[0012] (8) Glass according to any one of (1) to (7), containing the following components in mol%: Ln 3+ / R 2+ is 0.01 or more, preferably Ln 3+ / R 2+ is 0.01 to 3.0, more preferably Ln<2+ is 0.03 to 1.0, more preferably Ln 3+ / R 2+ is 0.05 to 0.8, more preferably Ln 3+ / R 2+ The range is 0.07 to 0.5.

[0013] (9) Glass containing the following components in mol% as described in any one of (1) to (8): Ln 3+ / ( Ba 2+ +Al 3+ ) is 0.02 or higher, preferably Ln 3+ / ( Ba 2+ +Al 3+ ) is 0.02 to 2.0, more preferably Ln 3+ / ( Ba 2+ +Al 3+ ) is 0.05 to 1.0, more preferably Ln 3+ / ( Ba 2+ +Al 3+ ) is 0.08 to 0.8, more preferably Ln 3+ / ( Ba 2+ +Al 3+ ) is between 0.1 and 0.5.

[0014] (10) Glass containing any one of (1) to (9) in mol% of the following components: P 5+ / (Al 3+ +Ln 3+ ) is 5.0 to 50.0, preferably P 5+ / (Al 3+ +Ln 3+ ) is 10.0 to 35.0, more preferably P 5+ / (Al 3+ +Ln 3+ ) is 12.0 to 30.0, more preferably P 5+ / (Al 3+ +Ln 3+ ) is between 15.0 and 25.0.

[0015] (11) Glass containing any one of (1) to (10) in mol% of the following components: Cu 2+ / Ln 3+ is 2.0 or higher, preferably Cu 2+ / Ln3+ is 2.0 to 40.0, more preferably Cu 2+ / Ln 3+ 5.0 to 30.0, more preferably Cu 2+ / Ln 3+ is 8.0 to 20.0, more preferably Cu 2+ / Ln 3+ The range is 10.0 to 15.0.

[0016] (12) Glass containing any one of (1) to (11) in mol% of the following components: P 5+ / R 2+ The value is 3.0 to 30.0, preferably P 5+ / R 2+ The range is 3.5 to 25.0, more preferably P 5+ / R 2+ 4.0 to 20.0, more preferably P 5+ / R 2+ The range is 5.0 to 10.0.

[0017] (13) Glass containing the following components in mol% as described in any one of (1) to (12): Ln 3+ / F - is 0.01 or greater, preferably Ln 3+ / F - is 0.02 to 10.0, more preferably Ln 3+ / F - is 0.05 to 5.0, more preferably Ln 3+ / F - is 0.05 to 2.0, more preferably Ln 3+ / F - The range is 0.1 to 1.0.

[0018] (14) Glass containing any one of (1) to (13) in mol% of the following components: F - / Cu 2+ is 0.05 to 2.0, preferably F - / Cu 2+ is 0.1 to 1.5, more preferably F - / Cu 2+ is 0.2 to 1.0, more preferably F - / Cu 2+ The range is 0.3 to 0.8.

[0019] (15) Glass containing any one of (1) to (14) in mol% of the following components: P 5+ : 56-68%, preferably P 5+ : 60-65%, and / or Al 3+ : 0.5~8%, preferably Al 3+ : 1-5%, and / or Cu 2+ : 6-20%, preferably Cu 2+ : 8-15%, and / or Rn + : 7-20%, preferably Rn + :10-17%, and / or R 2+ : 3-16%, preferably R 2+ : 5-14%, and / or Ln 3+ : 0.1~6%, preferably Ln 3+ : 0.5-4%, and / or Zn 2+ : 0-5%, preferably Zn 2+ : 0-2%, and / or Si 4+ : 0-2%, preferably Si 4+ : 0-1%, and / or B 3+ : 0-2%, preferably B 3+ : 0-1%, and / or Zr 4+ : 0-2%, preferably Zr 4+ : 0-1%, and / or Sb 3+ +Sn 4+ +Ce 4+ : 0-0.5%, preferably Sb 3+ +Sn 4+ +Ce 4+ : 0~0.1%, and the aforementioned Rn + is Li + na + , K + It is one or more species. 2+ is Mg 2+ Ca 2+ Sr 2+ Ba 2+ It is one or more species. 3+ is La 3+ , Gd 3+ , Y 3+ It is one or more species of [something].

[0020] (16) Glass containing the following components in mol% as described in any one of (1) to (15): Li + : 5-25%, preferably Li + : 8-20%, more preferably Li + : 10-16%, and / or Na + : 0-10%, preferably Na + : 0-5%, more preferably Na + : 0-2%, and / or K + : 0-10%, preferably K + : 0~5%, comfortable K + : 0-2%, and / or Mg 2+ : 0-15%, preferably Mg 2+ : 0.5~10%, more preferably Mg 2+ :2-8%, and / or Ca 2+ : 0-10%, preferably Ca 2+ : 0~5%, Comfortable Ca 2+ : 0-2%, and / or Sr 2+ : 0-10%, preferably Sr 2+ : 0-5%, more preferably Sr 2+ : 0-2%, and / or Ba 2+ : 0-10%, preferably Ba 2+ : 0.5~8%, more preferably Ba 2+ : 1-6%, and / or La 3+ : 0-5%, preferably La 3+ : 0~3%, more comfortably La 3+ : 0-2%, and / or Gd 3+ : 0-5%, preferably Gd 3+ :0~3%, more comfortable Gd 3+ : 0-2%, and / or Y 3+ : 0-6%, preferably Y 3+ : 0.1~5%, more comfortable 3+ The percentage is 0.5-3%.

[0021] (17) The glass according to (1) or (2), further comprising the following anionic components in mol%: Cl - +Br - +I -: 0-2%, preferably Cl - +Br - +I - : 0~1%, more comfortable Cl - +Br - +I - The percentage is 0-0.5%.

[0022] (18) Glass containing any one of (1) to (17) in mol% of the following components: O 2- : 85-99.5%, preferably 0 2- : 88-99%, more preferably 0 2- : 91-98%, and / or F - : 0.5~15%, preferably F - : 1-12%, more preferably F - The percentage is 2-9%.

[0023] (19) Transition temperature T of the glass g The temperature is 410°C or lower, preferably 400°C or lower, more preferably 390°C or lower, even more preferably 370-390°C, and / or the density ρ is 3.3 g / cm³. 3 Preferably, 3.2 g / cm³ 3 More preferably, 3.1 g / cm³ 3 More preferably, 3.0 g / cm³ 3 The following and / or the coefficient of thermal expansion α 20-120℃ is 110×10 -7 / K or less, preferably 100 × 10 -7 / K or less, more preferably 95×10 -7 / K or less, and / or hardness H v It is 380 kgf / mm 2 Preferably 390 kgf / mm² 2 More preferably 400 kgf / mm 2 More preferably 410 kgf / mm² 2 Therefore, Young's modulus E is 5500 × 10⁻⁶ 7 ~8500×10 7 Pa, preferably 6000 × 10 7 ~8000×10 7 Pa, ffer6500×10 7 ~7500×107 A glass described in any one of (1) to (18), which is Pa.

[0024] (20) When the glass thickness is 0.5 mm or less, the wavelength λ corresponding to the wavelength when the transmittance reaches 50% among the wavelength range of 500 to 700 nm 50 The glass according to any one of (1) to (19), wherein the wavelength is 635 nm or less, preferably 600 to 630 nm, and more preferably 610 to 625 nm.

[0025] (21) When the glass thickness is 0.5 mm or less, the transmittance τ at 400 nm 400 The transmittance τ at 500 nm is 80.0% or more, preferably 82.0% or more, more preferably 84.0% or more. 500 The transmittance τ at 1100 nm is 83.0% or higher, preferably 85.0% or higher, more preferably 88.0% or higher. 1100 The glass according to any one of (1) to (20), wherein the content is 10.0% or less, preferably 7.0% or less, more preferably 5.0% or less, and even more preferably 3.0% or less.

[0026] (22) The glass according to (20) or (21), wherein the thickness of the glass is 0.05 to 0.4 mm, preferably 0.1 to 0.3 mm, more preferably 0.1 mm, 0.15 mm, 0.2 mm, or 0.25 mm.

[0027] (23) A glass element containing the glass described in any one of (1) to (21).

[0028] (24) A filter comprising the glass described in any one of (1) to (21), or the glass element described in (23).

[0029] (25) Equipment including glass as described in any one of (1) to (21), or glass element as described in (23), or filter as described in (24). [Effects of the Invention]

[0030] The beneficial effects of the present invention are as follows: Due to a rational composition design, the glass obtained by the present invention has excellent intrinsic quality, excellent transmission properties in the visible region, and excellent absorption properties in the near-infrared region. [Modes for carrying out the invention]

[0031] The embodiments of the present invention will be described in detail below, but the present invention is not limited to the embodiments described below and can be implemented by modifying them as appropriate within the scope of the object of the present invention. Furthermore, although there may be omissions as appropriate, the gist of the present invention is not limited by repetition of the description.

[0032] [glass] The range of each component constituting the glass of the present invention is described below. In this specification, unless otherwise specified, the content of a cationic component is expressed as the mole percent (mol%) of the cation relative to the total content of the cationic component, the content of an anionic component is expressed as the mole percent (mol%) of the anion relative to the total content of the anionic component, the ratio between the contents of cationic components is the ratio of the mole percent content of each cationic component, the ratio between the contents of anionic components is the ratio of the mole percent content of each anionic component, and the ratio between the contents of anionic and cationic components is the ratio of the mole percent content of the cationic component in the total content of the cationic component to the mole percent content of the anionic component in the total content of the anionic component.

[0033] Specifically, the numerical ranges described herein include upper and lower limits, and “greater than or equal to” and “less than or equal to” include endpoint values, as well as all integers and fractions included in the range, and are not limited to the specific values ​​described where the range is limited. The terms “and / or” used herein are inclusive; for example, “A and / or B” means A only, B only, or both A and B.

[0034] The ionic values ​​of each component described below are representative values ​​used for convenience and are not distinguishable from other ionic values. The ionic values ​​of each component of glass may be other than the representative values. For example, since phosphorus (P) usually exists in glass with an ionic value of +5, this patent refers to "P 5+ While this value is used as a representative value, other ionic valence states may exist, and these are also covered by this patent.

[0035] <Cational components> P 5+ P is an essential component for forming the glass framework of the present invention, promotes glass formation, and is advantageous for improving the near-infrared absorption performance of the glass, 5+ If the content is less than 51%, the above effect is insufficient, and the near-infrared absorption function of the glass cannot meet the design requirements. 5+ When the content exceeds 72%, the tendency of the glass to crystallize increases, and its weather resistance decreases. Therefore, in the present invention, P 5+ The content is 51-72%, preferably 56-68%, more preferably 60-65%. In some embodiments, P is present in amounts of approximately 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, and 72%. 5+ It can include.

[0036] Al 3+ While it is advantageous for improving the stability of glass, increasing its strength, and improving its weather resistance, if its content exceeds 10%, the tendency for glass crystallization increases and the melting performance of the glass deteriorates. Therefore, in this invention, Al 3+ The content is 0-10%, preferably 0.5-8%, more preferably 1-5%. In some embodiments, the Al content is approximately 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, and 10%. 3+ It can include.

[0037] Cu 2+ Cu is a component necessary for the glass of the present invention to obtain near-infrared absorption performance, and if its content is less than 5%, it is difficult for the glass's near-infrared absorption performance to meet the design requirements. 2+ When the content exceeds 25%, the transmittance of the glass in the visible range decreases, the valence state of Cu in the glass changes, making it difficult to obtain the expected light absorption performance, and the devitrification resistance of the glass decreases. Therefore, in the present invention, Cu 2+ The content is 5-25%, preferably 6-20%, more preferably 8-15%. In some embodiments, the Cu content is approximately 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, 20.5%, 21%, 21.5%, 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, and 25%. 2+ It can include.

[0038] In some embodiments, Cu 2+ Al content and 3+ Ratio of Cu content 2+ / Al 3+ By controlling this within the range of 1.0 to 15.0, the glass can have excellent transmittance in the visible range, improve the near-infrared absorption performance of the glass, and obtain an appropriate Young's modulus. Therefore, Cu is preferable. 2+ / Al 3+ 1.0~15.0, ferCu 2+ / Al 3+ is 2.0 to 10.0, more preferably Cu 2+ / Al 3+ is 3.0 to 8.0, more preferably Cu 2+ / Al 3+ The value is 4.0 to 7.0. In some embodiments, Cu 2+ / Al 3+The possible values ​​are 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, and 15.0.

[0039] Ln 3+ (Ln 3+ is La 3+ , Gd 3+ , Y 3+ One or more of these substances are beneficial in increasing the visible light transmittance and near-infrared absorption performance of glass, and in improving the chemical stability and hardness of glass, but if their content exceeds 8%, the crystallinity resistance of the glass deteriorates. Therefore, Ln 3+ The content is 8% or less, preferably 0.1-6%, more preferably 0.5-4%. In some embodiments, Ln is about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, and 8%. 3+ It can include.

[0040] Y 3+ La in glass 3+ and Gd 3+ This is more advantageous for obtaining the spectral characteristics expected by the present invention. Therefore, Y 3+ The content is preferably 0-6%, more preferably 0.1-5%, and even more preferably 0.5-3%, La 3+ The content of is preferably 0-5%, more preferably 0-3%, even more preferably 0-2%, Gd 3+The content is preferably 0-5%, more preferably 0-3%, and even more preferably 0-2%. In some embodiments, Y is about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, and 6%. 3+ It can include. In some embodiments, it can include about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.5%, 4%, 4.5%, and 5% of La 3+ It can include. In some embodiments, Gd of about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.5%, 4%, 4.5%, and 5%. 3+ It can include.

[0041] In some embodiments, Al 3+ Content and Ln 3+ Ratio of Al content 3+ / Ln 3+ Controlling this to 0.2 or higher is advantageous for the glass to obtain an appropriate Young's modulus and degree of abrasion. Therefore, Al is preferred. 3+ / Ln 3+ is 0.2 or higher, more preferably Al 3+ / Ln 3+ The value is 0.2 to 20.0, more preferably Al 3+ / Ln3+ The range is 0.5 to 15.0. Furthermore, Al 3+ / Ln 3+ By controlling the value within the range of 1.0 to 10.0, it is advantageous to obtain high hardness in the glass while simultaneously preventing an increase in the transition temperature of the glass. Therefore, Al is more preferably used. 3+ / Ln 3+ The value is 1.0 to 10.0, and very preferably Al 3+ / Ln 3+ The range is 1.5 to 8.0. In some embodiments, Al 3+ / Ln 3+ The values ​​are 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4 0.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, 15.0, 15.5, 16.0, 16.5, 17.0, 17.5, 18.0, 18.5, 19.0, 19.5, 20.0 are possible.

[0042] In some embodiments, P 5+ / (Al 3+ +Ln 3+ By controlling the value within the range of 5.0 to 50.0, the hardness of the glass can be increased and the increase in glass density can be prevented. Therefore, P is preferable. 5+ / (Al 3+ +Ln 3+ ) is 5.0 to 50.0, more preferably P 5+ / (Al 3+ +Ln 3+ ) is 10.0 to 35.0. Furthermore, P 5+ / (Al 3+ +Ln 3+ By controlling the value within the range of 12.0 to 30.0, the visible light transmittance of the glass can be further increased. Therefore, P is even more preferable.5+ / (Al 3+ +Ln 3+ ) is 12.0 to 30.0, more preferably P 5+ / (Al 3+ +Ln 3+ ) is 15.0 to 25.0. In some embodiments, P 5+ / (Al 3+ +Ln 3+ The possible values ​​for ) are 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 25.0, 26.0, 27.0, 28.0, 29.0, 30.0, 31.0, 32.0, 33.0, 34.0, 35.0, 36.0, 37.0, 38.0, 39.0, 40.0, 41.0, 42.0, 43.0, 44.0, 45.0, 46.0, 47.0, 48.0, 49.0, and 50.0.

[0043] In some embodiments, Cu 2+ / Ln 3+ Controlling this to 2.0 or higher is advantageous for improving the near-infrared absorption performance of the glass. Therefore, Cu is preferred. 2+ / Ln 3+ is 2.0 or higher, more preferably Cu 2+ / Ln 3+ The range is 2.0 to 40.0. Furthermore, Cu 2+ / Ln 3+ By controlling the value within the range of 5.0 to 30.0, it is advantageous to increase the hardness of the glass and lower the transition temperature. Therefore, Cu is even more preferable. 2+ / Ln 3+ is 5.0 to 30.0, more preferably Cu 2+ / Ln 3+ The value is 8.0 to 20.0, and very preferably Cu 2+ / Ln 3+ The value is 10.0 to 15.0. In some embodiments, Cu 2+ / Ln 3+The possible values ​​are 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 25.0, 26.0, 27.0, 28.0, 29.0, 30.0, 31.0, 32.0, 33.0, 34.0, 35.0, 36.0, 37.0, 38.0, 39.0, and 40.0.

[0044] Rn + (Rn + is Li + na + , K + One or more types of these reduce the melting temperature and viscosity of glass, Cu 2+ The presence of Cu in this state can be promoted, but Rn + As Rn increases, the chemical stability of the glass deteriorates. In this invention, 5% or more Rn + The above performance is obtained by adding Rn + When the content exceeds 25%, the devitrification resistance of the glass decreases, the moldability of the glass deteriorates, and the coefficient of thermal expansion increases. Therefore, in the present invention, Rn + The content is 5-25%, preferably 7-20%, more preferably 10-17%. In some embodiments, Rn is about 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, 20.5%, 21%, 21.5%, 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, and 25%. + It can include.

[0045] Li + Na can lower the melting temperature and viscosity of glass, improve the visible light transmittance of glass, and at the same time contribute to chemical stability. + and K + It is superior to the present invention, and preferably contains 5% or more Li+ It includes Li + When the content exceeds 25%, the glass's resistance to devitrification and moldability deteriorates. Therefore, Li + The lower limit of the content is preferably 5%, more preferably 8%, and even more preferably 10%, Li + The upper limit of the content is preferably 25%, more preferably 20%, and even more preferably 16%. In some embodiments, about 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, 20.5%, 21%, 21.5%, 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, and 25% Li + It can include.

[0046] Na + Na is a component that improves the meltability of glass. In this invention, Na + By controlling the content to 10% or less, the chemical stability of the glass can be improved, and a decrease in weather resistance and processability can be prevented. Preferably, Na + The content of Na is 5% or less, more preferably Na + The content is 2% or less. In some embodiments, the Na content is approximately 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, and 10%. + It can include.

[0047] K + It can increase the transmittance of glass in the visible range, but if its content exceeds 10%, the stability of the glass decreases. Therefore, K +The content of is limited to 10% or less, preferably 5% or less, more preferably 2% or less. In some embodiments, the K content is about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, and 10%. + It can include.

[0048] R 2+ (R 2+ is Mg 2+ Ca 2+ Sr 2+ Ba 2+ One or more of these can be used to lower the melting temperature and thermal expansion coefficient of glass, thereby improving the formation stability and strength of the glass, but R 2+ If the content exceeds 18%, the devitrification resistance of the glass decreases. In this invention, R 2+ The content is 1-18%, preferably 3-16%, more preferably 5-14%. In some embodiments, the R content is approximately 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, and 18%. 2+ It can include.

[0049] In some embodiments, Ln 3+ / R 2+ By controlling Ln to 0.01 or higher, the crystallinity resistance of the glass can be optimized, which is advantageous for reducing the thermal expansion coefficient of the glass. Therefore, Ln is preferred. 3+ / R 2+ If it is 0.01 or higher, more preferably Ln 3+ / R 2+ The range is 0.01 to 3.0. Furthermore, Ln 3+ / R 2+By controlling the value within the range of 0.03 to 1.0, it is also advantageous to improve the near-infrared absorption performance of the glass. Therefore, Ln is more preferably used. 3+ / R 2+ is 0.03 to 1.0, more preferably Ln 3+ / R 2+ The value is 0.05 to 0.8, and very preferably Ln 3+ / R 2+ The value is 0.07 to 0.5. In some embodiments, Ln 3+ / R 2+ The values ​​are 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3 Possible values ​​include 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, and 3.0.

[0050] In some embodiments, P 5+ / R 2+ Controlling the value within the range of 3.0 to 30.0 is advantageous in improving the chemical stability of the glass and reducing its density and thermal expansion coefficient. Therefore, P is preferable. 5+ / R 2+ The value is 3.0 to 30.0, more preferably P 5+ / R 2+ The value is 3.5 to 25.0, more preferably P 5+ / R 2+ The range is 4.0 to 20.0, and more preferably P 5+ / R 2+ The value is 5.0 to 10.0. In some embodiments, P 5+ / R 2+The values ​​are 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, 15.0, 15.5, 16.0, 16.5, 17.0, Possible values ​​include 17.5, 18.0, 18.5, 19.0, 19.5, 20.0, 20.5, 21.0, 21.5, 22.0, 22.5, 23.0, 23.5, 24.0, 24.5, 25.0, 25.5, 26.0, 26.5, 27.0, 27.5, 28.0, 28.5, 29.0, 29.5, and 30.0.

[0051] Mg 2+ While it can lower the melting temperature of glass and improve its processing performance, if its content exceeds 15%, the crystallinity resistance of the glass decreases. Therefore, Mg 2+ The content should be 15% or less, preferably Mg 2+ The content is 0.5-10%, more preferably Mg 2+ The content is 2-8%. In some embodiments, the Mg content is approximately 0%, 0% or more, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, and 15%. 2+ It can include.

[0052] In some embodiments, Li + / ( Mg 2+ +Al 3+ By controlling the value of ) within the range of 0.4 to 10.0, the glass can be made to have excellent transmittance in the visible range, the near-infrared absorption of the glass can be increased, and an increase in glass density and thermal expansion coefficient can be prevented. Therefore, Li is preferably + / ( Mg 2+ +Al 3+ ) is 0.4 to 10.0, more preferably Li + / ( Mg 2+ +Al 3+) is 0.6 to 7.0, more preferably Li + / ( Mg 2+ +Al 3+ ) is 1.0 to 5.0, more preferably Li + / ( Mg 2+ +Al 3+ ) is 1.2 to 3.0. In some embodiments, Li + / ( Mg 2+ +Al 3+ The values ​​of ) are 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3. Possible values ​​include 7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.3, 5.5, 5.7, 6.0, 6.3, 6.5, 6.7, 7.0, 7.3, 7.5, 7.7, 8.0, 8.3, 8.5, 8.7, 9.0, 9.3, 9.5, 9.7, and 10.0.

[0053] In some embodiments, (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ By controlling the value of (Cu) within the range of 0.3 to 6.0, the glass can have an appropriate Young's modulus while simultaneously increasing its hardness. Therefore, preferably (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ ) is 0.3 to 6.0, more preferably (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ ) is 0.5 to 5.0, more preferably (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ ) is 0.7 to 3.0, more preferably (Cu 2+ +Mg 2+ ) / (Li + +Al 3+) is 0.8 to 2.0. In some embodiments, (Cu 2+ +Mg 2+ ) / (Li + +Al 3+ The possible values ​​for ) are 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, and 6.0.

[0054] Less than 10% Ca 2+ By adding this, the high-temperature viscosity of the glass can be reduced while simultaneously preventing a decrease in crystallinity, preferably Ca 2+ The content is 5% or less, more preferably 2% or less. In some embodiments, the Ca content is about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, and 10%. 2+ It can include.

[0055] Sr less than 10% 2+ By adding this, a decrease in the chemical stability and crystallinity resistance of the glass can be prevented, preferably Sr 2+ The content of is 5% or less, more preferably 2% or less. In some embodiments, the Sr content is about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, and 10%. 2+ It can include.

[0056] Ba 2+Ba can increase the transmittance of glass in the visible range and improve the formation stability and strength of the glass, but if its content exceeds 10%, the density of the glass increases. In some embodiments of the present invention, Ba 2+ By controlling the content to 0.5% or more, the chemical stability of the glass can be improved and the coefficient of thermal expansion of the glass can be lowered. Therefore, Ba 2+ The content of is 10% or less, preferably 0.5-8%, more preferably 1-6%. In some embodiments, the content of Ba is about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, and 10%. 2+ It can include.

[0057] In some embodiments, Ln 3+ / ( Ba 2+ +Al 3+ By controlling Ln to 0.02 or higher, it is advantageous to lower the thermal expansion coefficient of the glass while simultaneously preventing an increase in the transition temperature. Therefore, Ln is preferably used. 3+ / ( Ba 2+ +Al 3+ ) is 0.02 or higher, more preferably Ln 3+ / ( Ba 2+ +Al 3+ ) is 0.02 to 2.0, more preferably Ln 3+ / ( Ba 2+ +Al 3+ ) is between 0.05 and 1.0. Furthermore, Ln 3+ / ( Ba 2+ +Al 3+ By controlling ) within the range of 0.08 to 0.8, it is also advantageous for optimizing the hardness of the glass. Therefore, Ln is more preferably used. 3+ / ( Ba 2+ +Al 3+ ) is 0.08 to 0.8, and very preferably Ln 3+ / ( Ba 2+ +Al 3+ ) is between 0.1 and 0.5.

[0058] B3+ While it can lower the melting temperature of glass, if its content exceeds 5%, the near-infrared absorption properties decrease. Therefore, B 3+ The content of is 0-5%, preferably 0-2%, more preferably 0-1%, and even more preferably B 3+ This means not including B. In some embodiments, B is approximately 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, and 5%. 3+ It can include.

[0059] Si 4+ While Si can promote glass formation and improve the chemical stability of glass, if its content exceeds 5%, the melting properties of the glass deteriorate, making it easier for unmelted impurities to form in the glass, and simultaneously reducing the near-infrared absorption properties of the glass. Therefore, Si 4+ The content of is 0-5%, preferably 0-2%, more preferably 0-1%, and even more preferably Si 4+ It does not contain. In some embodiments, it contains about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, and 5% Si. 4+ It can include.

[0060] Zn 2+ While Zn can lower the transition temperature of glass and improve its thermal stability, if its content exceeds 10%, the glass's resistance to devitrification decreases. Therefore, 2+ The content is limited to 10% or less, preferably 5% or less, and more preferably 2% or less. In some embodiments, Zn is even more preferably. 2+ It does not contain Zn. In some embodiments, it contains about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, and 5% Zn. 2+ It can include.

[0061] Zr 4+While Zr can improve the chemical stability of glass, if its content exceeds 5%, the glass's dissolving performance and crystallinity deteriorate significantly. Therefore, Zr 4+ The content of is 0-5%, preferably 0-2%, more preferably 0-1%, and even more preferably Zr 4+ It does not contain Zr. In some embodiments, it contains about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, and 5% Zr. 4+ It can include.

[0062] S 3+ Sn 4+ Ce 4+ One or more of these components can be used as a clarifying agent to enhance the clarifying effect of glass and improve the bubble density grade of glass, Sb 3+ Sn 4+ Ce 4+ The content of Sb alone or in total is 0-1%, preferably 0-0.5%, more preferably 0-0.1%. In some embodiments, the content is about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, and 1%. 3+ and / or Sn 4+ and / or Ce 4+ It can include.

[0063] <Anionic components> The anionic component of the glass of this invention is mainly O 2- and F - The present invention contains O to provide excellent stability and resistance to devitrification. 2- and F - Total content O 2- +F - It is 98% or more, preferably 99% or more, more preferably 99.5% or more. In some embodiments, O 2- +F -It can be 98%, 98.1%, 98.2%, 98.3%, 98.4%, 98.5%, 98.6%, 98.7%, 98.8%, 98.9%, 99%, 99.1%, 99.2%, 99.3%, 99.4%, 99.5%, 99.6%, 99.7%, 99.8%, 99.9%, or 100%.

[0064] O 2- Cu ions are an important anionic component in the glass of the present invention. In addition to stabilizing the network structure and forming a stable glass, Cu ions in the glass are Cu 2+ It exists in this form, and furthermore, it can guarantee the light absorption characteristics of the glass in the near-infrared region. 2- If the content is too low, it is difficult to form stable glass, and Cu 2+ ga Cu + It is easily reduced to, and it is difficult to achieve light absorption effects in the near-infrared region, however, O 2- If the content of is too high, the melting temperature of the glass will rise, and the light transmittance in the visible range will decrease significantly. Therefore, 2- The content of is limited to 85-99.5%, preferably 88-99%, and more preferably 91-98%. In some embodiments, the content of is about 85%, 85.5%, 86%, 86.5%, 87%, 87.5%, 88%, 88.5%, 89%, 89.5%, 90%, 90.5%, 91%, 91.5%, 92%, 92.5%, 93%, 93.5%, 94%, 94.5%, 95%, 95.5%, 96%, 96.5%, 97%, 97.5%, 98%, 98.5%, 99%, 99.5% of O 2- It can include.

[0065] F - It can lower the melting temperature of glass, increase the transmittance of glass in the visible range, and lower the viscosity of glass, and is advantageous in improving the crystallinity of glass when added in appropriate amounts. - If the content exceeds 15%, the stability of the glass decreases, it becomes more volatile when the glass melts, pollutes the environment, and is prone to developing stripes on the glass. Therefore, F -The content is limited to 0.5-15%, preferably 1-12%, more preferably 2-9%. In some embodiments, F is present in amounts of about 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, and 15%. - It can include.

[0066] In some embodiments, Ln 3+ / F - By controlling this to 0.01 or higher, the near-infrared absorption performance of the glass can be improved, and the rise in glass transition temperature can be prevented. Therefore, Ln is preferable. 3+ / F - If it is 0.01 or higher, more preferably Ln 3+ / F - The value is 0.02 to 10.0, and more preferably Ln 3+ / F - It is between 0.05 and 5.0. Furthermore, Ln 3+ / F - By controlling Ln within the range of 0.05 to 2.0, the glass can also obtain an appropriate Young's modulus. Therefore, Ln is even more preferable. 3+ / F - is 0.05 to 2.0, and very preferably Ln 3+ / F - Ln is 0.1 to 1.0. In some embodiments, Ln 3+ / F -The values ​​are 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, Possible values ​​include 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, and 10.0.

[0067] In some embodiments, F - / Cu 2+ By controlling F within the range of 0.05 to 2.0, the glass can obtain an appropriate Young's modulus and a low coefficient of thermal expansion. Therefore, F is preferable. - / Cu 2+ The range is 0.05 to 2.0, more preferably F - / Cu 2+ The value is 0.1 to 1.5, more preferably F - / Cu 2+ The value is 0.2 to 1.0, and more preferably F - / Cu 2+ It is 0.3 to 0.8. In some embodiments, F - / Cu 2+ The possible values ​​are 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2.0.

[0068] Cl - , Br - , I - One or more of these components can be used as a clarifying agent to enhance the clarifying effect of glass and improve the bubble degree grade of glass, Cl - , Br - , I - The content of each component alone or in total is 0-2%, preferably 0-1%, more preferably 0-0.5%. In some embodiments, the content is about 0%, 0% or more, 0.01%, 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, and 2% of Cl - and / or Br - and / or I - It can include.

[0069] <Ingredients not included> Components such as V, Cr, Mn, Fe, Co, Ni, Ag, and Mo, even when present individually or in combination in small amounts, interfere with the spectral transmittance of the glass, which is unfavorable for the formation of the glass of the present invention. Therefore, it is preferable that the above components are not present.

[0070] As, Pb, Th, Cd, Tl, Os, Be, and Se components have recently been increasingly avoided as hazardous chemical substances, and environmental protection efforts are necessary not only in the glass manufacturing process but also in the processing and post-production handling. Therefore, when prioritizing environmental impact, it is preferable to exclude these components except for unavoidable inclusions. As a result, the glass will not actually contain substances that pollute the environment. Consequently, the glass of the present invention can be manufactured, processed, and disposed of without the need for special environmental measures.

[0071] The terms "not containing" and "0%" described in this specification mean that this component was not intentionally added as a raw material of the present invention. However, as raw materials and / or equipment for manufacturing glass, impurities and components that were not intentionally added may be present in small or trace amounts in the final glass, and these are also the subject of the patent of the present invention.

[0072] [Manufacturing Method] The manufacturing method of the glass of the present invention is as follows: The glass of the present invention is manufactured by conventional raw materials and conventional processes such as carbonates, nitrates, sulfates, phosphates, metaphosphates, sulfates, hydroxides, oxides, fluorides, etc., and after being formulated by a conventional method, the prepared furnace charge is put into a melting furnace at 700 - 1000 °C and melted. Then, it is clarified, stirred, and homogenized to obtain a homogeneous molten glass without bubbles or undissolved substances, and this molten glass is put into a mold for casting and annealing. A person skilled in the art can appropriately select raw materials, manufacturing methods, and process parameters according to actual needs.

[0073] The glass of the present invention can also be formed by well-known methods. In some embodiments, the glass described in this specification can be manufactured into a molded body through various processes, and the molded body includes but is not limited to sheets, and the processes include but are not limited to drawdown, float, roll press, and other sheet forming processes known in the art. Alternatively, the glass is manufactured by a float or roll press method known in the art.

[0074] The glass of the present invention can manufacture a sheet-like glass molded body by methods such as grinding and polishing, but the method for manufacturing the glass molded body is not limited to these methods.

[0075] The glass and glass molded body described in the present invention can have any reasonable and useful thickness.

[0076] Hereinafter, the characteristics of the glass of the present invention will be described.

[0077] <Transition temperature> The glass transition temperature (T g ) is tested according to the method specified in GB / T7962.16-2010.

[0078] In some embodiments, the glass transition temperature (T g ) of the present invention is 410 °C or less, preferably 400 °C or less, more preferably 390 °C or less, and still more preferably 370 - 390 °C.

[0079] <Density> The density (ρ) of the glass is tested according to the method specified in 'GB / T7962.20-2010'.

[0080] In some embodiments, the density (ρ) of the glass of the present invention is 3.3 g / cm 3 or less, preferably 3.2 g / cm 3 or less, more preferably 3.1 g / cm 3 or less, and still more preferably 3.0 g / cm 3 or less.

[0081] <Coefficient of thermal expansion> The coefficient of thermal expansion (α 20-120°C ) of the glass is tested according to the method specified in GB / T7962.16-2010.

[0082] In some embodiments, the coefficient of thermal expansion (α 20-120℃ ) of the glass of the present invention is 110×10 -7 / K or less, preferably 100×10 -7 / K or less, and more preferably 95×10 -7 / K or less.

[0083] <Hardness> The hardness (H v ) of the glass is tested according to the following method. When a diamond square pyramid indenter with an angle of 136° formed on the opposite surface is used to press a pyramid-shaped depression into the test surface, the load (N) is calculated by the length of the depression, and the surface area (mm 2It is expressed as the value obtained by dividing by (). The test is performed with a test load of 100 (N) and a holding time of 15 (seconds).

[0084] In some embodiments, the glass hardness (H) of the present invention is determined by the glass hardness (H v ) is 380 kgf / mm 2 Preferably 390 kgf / mm² 2 More preferably 400 kgf / mm 2 More preferably 410 kgf / mm² 2 That's all.

[0085] Young's modulus The Young's modulus (E) of glass is calculated by measuring the longitudinal and transverse wave velocities using ultrasound and following the formula below.

number

[0086] In some embodiments, the lower limit of the Young's modulus (E) of the glass of the present invention is 5500 × 10⁻¹⁰. 7 / Pa, preferably with a lower limit of 6000 × 10 7 / Pa, a more favorable lower limit is 6500 × 10 7 The upper limit of Young's modulus (E) is 8500 × 10⁻¹⁰ / Pa. 7 / Pa, preferably with an upper limit of 8000 × 10 7 / Pa, a more preferable upper limit is 7500 × 10 7 It is / Pa.

[0087] <Spectral transmittance> The spectral transmittance of the glass in this invention refers to the value obtained using a spectrophotometer by the following method: Assume that the glass sample has two parallel, optically polished planes, and that light is incident perpendicularly from one parallel plane and exits from the other parallel plane. The value obtained by dividing the intensity of this exiting light by the intensity of the incident light is the transmittance, and this transmittance is also called the external transmittance.

[0088] In some embodiments, when the glass thickness is 0.5 mm or less, the spectral transmittance has the following characteristics.

[0089] Spectral transmittance at a wavelength of 400 nm (τ 400 The percentage is 80.0% or more, preferably 82.0% or more, and more preferably 84.0% or more.

[0090] In some embodiments, τ 400The percentages are 80.0%, 80.1%, 80.2%, 80.3%, 80.4%, 80.5%, 80.6%, 80.7%, 80.8%, 80.9%, 81.0%, 81.1%, 81.2%, 81.3%, 81.4%, 81.5%, 81.6%, 81.7%, 81.8%, 81.9%, 82.0%, 82.1%, 82.2%, 82.3%, and 8 2.4%, 82.5%, 82.6%, 82.7%, 82.8%, 82.9%, 83.0%, 83.1%, 83.2%, 83.3%, 83.4%, 83.5%, 83.6%, 83.7%, 83.8%, 83.9%, 84.0%, 84.1%, 84.2%, 84.3%, 84.4%, 84.5%, 84.6%, 84.7%, 84.8 %, 84.9%, 85.0%, 85.1%, 85.2%, 85.3%, 85.4%, 85.5%, 85.6%, 85.7%, 85.8%, 85.9%, 86.0%, 86.1%, 86.2%, 86.3%, 86.4%, 86.5%, 86.6%, 86.7%, 86.8%, 86.9%, 87.0%, 87.1%, 87.2%, 8 The possible percentages are 7.3%, 87.4%, 87.5%, 87.6%, 87.7%, 87.8%, 87.9%, 88.0%, 88.1%, 88.2%, 88.3%, 88.4%, 88.5%, 88.6%, 88.7%, 88.8%, 88.9%, 89.0%, 89.5%, 90.0%, 90.5%, 91.0%, 91.5%, and 92.0%.

[0091] Spectral transmittance at a wavelength of 500 nm (τ 500 The percentage is 83.0% or more, preferably 85.0% or more, and more preferably 88.0% or more.

[0092] In some embodiments, τ 500It can be 83.0%, 83.1%, 83.2%, 83.3%, 83.4%, 83.5%, 83.6%, 83.7%, 83.8%, 83.9%, 84.0%, 84.1%, 84.2%, 84.3%, 84.4%, 84.5%, 84.6%, 84.7%, 84.8%, 84.9%, 85.0%, 85.1%, 85.2%, 85.3%, 85.4%, 85.5%, 85.6%, 85.7%, 85.8%, 85.9%, 86.0%, 86.1%, 86.2%, 86.3%, 86.4%, 86.5%, 86.6%, 86.7%, 86.8%, 86.9%, 87.0%, 87.1%, 87.2%, 87.3%, 87.4%, 87.5%, 87.6%, 87.7%, 87.8%, 87.9%, 88.0%, 88.1%, 88.2%, 88.3%, 88.4%, 88.5%, 88.6%, 88.7%, 88.8%, 88.9%, 89.0%, 89.1%, 89.2%, 89.3%, 89.4%, 89.5%, 89.6%, 89.7%, 89.8%, 89.9%, 90.0%, 90.1%, 90.2%, 90.3%, 90.4%, 90.5%, 90.6%, 90.7%, 90.8%, 90.9%, 91.0%, 91.1%, 91.2%, 91.3%, 91.4%, 91.5%, 91.6%, 91.7%, 91.8%, 91.9%, 92.0%, 92.5%, 93.0%, 93.5%, 94.0%, 94.5%, 95.0%.

[0093] Spectral transmittance (τ 1100 ) at a wavelength of 1100 nm is 10.0% or less, preferably 7.0% or less, more preferably 5.0% or less, and still more preferably 3.0% or less.

[0094] In some embodiments, τ 1100 can be 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, 10.0%.

[0095] In some embodiments, when the glass thickness is 0.5 mm or less, the spectral transmittance within the wavelength range of 500 to 700 nm is calculated as the wavelength at which the transmittance reaches 50% (λ 50 The wavelength is 635 nm or less, preferably 600 to 630 nm, more preferably 610 to 625 nm.

[0096] In some embodiments, λ 50 These may be 600nm, 601nm, 602nm, 603nm, 604nm, 605nm, 606nm, 607nm, 608nm, 609nm, 610nm, 611nm, 612nm, 613nm, 614nm, 615nm, 616nm, 617nm, 618nm, 619nm, 620nm, 621nm, 622nm, 623nm, 624nm, 625nm, 626nm, 627nm, 628nm, 629nm, 630nm, 631nm, 632nm, 633nm, 634nm, and 635nm.

[0097] In the spectral transmittance test described above, the thickness of the glass is preferably 0.05 to 0.4 mm, more preferably 0.1 to 0.3 mm, and even more preferably 0.1 mm, 0.15 mm, 0.2 mm, or 0.25 mm.

[0098] [Glass element] The glass element according to the present invention includes the glass and includes thin plate-shaped glass elements and lenses used in near-infrared absorption filters, and is suitable for color correction applications of solid-state image sensors and possesses various excellent properties of the glass. The thickness of the glass element (distance between the incident surface and the exit surface of transmitted light) is determined by the transmission characteristics of the element, and is preferably 0.05 to 0.4 mm, more preferably 0.1 to 0.3 mm, and even more preferably 0.1 mm, 0.15 mm, 0.2 mm, or 0.25 mm, and the spectral transmittance within the wavelength range of 500 to 700 nm is the wavelength (λ) at which the transmittance reaches 50%. 50The spectral characteristics are 635 nm or less, preferably 600 to 630 nm, and more preferably 610 to 625 nm. To obtain such a glass element, the glass composition is adjusted and processed into an element having the above spectral characteristics and thickness.

[0099] [Filter] The filter according to the present invention is a near-infrared filter and comprises a near-infrared absorbing element made of glass or near-infrared absorbing glass with both sides, including the glass element, optically polished. This element provides the filter with a color correction function, and also provides the various excellent properties of the glass.

[0100] [Equipment] The glass, glass element, or filter of the present invention can be used to manufacture devices such as mobile communication devices like mobile phones, smart wearable devices, imaging devices, display devices, and monitoring devices by well-known methods.

[0101] Examples <Examples of glass applications> To further clarify the technical solutions of the present invention, the following non-limiting embodiments are provided. In this embodiment, glass containing the components shown in Tables 1 to 3 is obtained by employing the glass manufacturing method described above. Furthermore, the properties of each glass were measured using the test method described in the present invention, and the results are shown in Tables 1 to 3.

[0102] [Table 1]

[0103] [Table 2]

[0104] [Table 3]

[0105] [Table 4]

[0106] [Table 5]

[0107] [Table 6]

[0108] The glass produced in the examples described in Tables 1 to 3 above was processed into 0.2 mm thick glass sheets, and the spectral transmittance of each example glass was measured according to the test method described above. The results are shown in Tables 4 to 6 below.

[0109] [Table 7]

[0110] [Table 8]

[0111] [Table 9]

[0112] <Examples of glass element implementations> Examples of glass elements made from the glass of Examples 1 to 24 above using methods known in the art include thin glass elements and lenses used in near-infrared absorption filters, which are suitable for color correction applications in solid-state image sensors and possess the various excellent properties of the glass described above.

[0113] <Example of a filter> The glass and / or glass elements of the above Examples 1 to 24# are used to make a filter by a method known in the art, and the filter of the present invention has a color correction function as well as possesses the various excellent properties of the above glass.

[0114] <Examples of equipment installations> The glass and / or glass elements and / or filters of the present invention can be used to manufacture devices such as mobile communication devices like mobile phones, smart wearable devices, imaging devices, display devices, and monitoring devices by well-known methods. Furthermore, they can also be used in imaging devices and devices in imaging devices, sensors, microscopes, pharmaceutical technology, digital projection, optical communication technology / information transmission, or in-vehicle fields.

Claims

1. A glass containing the following cation components in mol%: P ５＋ : 51 - 72%, Al ３＋ : 0.01 - 10%, Cu ２＋ : 5 - 25%, Rn ＋ : 5 - 25%, R ２＋ : 1 - 18%, Ln ３＋ : 0.01 - 8%, Y³⁺: 0 - 3%, Al³⁺ / Ln³⁺ is 0.2 - 10.0, and the said Rn ＋ is Li ＋ , Na ＋ , K ＋ and is one or more of them, R ２＋ is Mg ２＋ , Ca ２＋ , Sr ２＋ , Ba ２＋ and is one or more of them, Ln ３＋ is La ３＋ , Gd ３＋ , Y ３＋ and is one or more of them, The anionic component is O ２－ and F － It contains, O ２－ and F － Total content O ２－ +F － The percentage is over 98%.

2. The glass according to claim 1, further comprising the following cation component in mol%: Zn ２＋ : 0-10%, and / or Si ４＋ : 0-5%, and / or B ３＋ : 0-5%, and / or Zr ４＋ : 0-5%, and / or Sb ３＋ +Sn ４＋ +Ce ４＋ : 0-1%.

3. Glass consisting of the following cation components in mol%: P ５＋ :51-72%, Al ３＋ :0.01~10%, Cu ２＋ : 5-25%, Rn ＋ : 5-25%, R ２＋ : 1-18%, Ln ３＋ :0.01~8%, Zn ２＋ : 0-10%, Si ４＋ : 0-5%, B ３＋ : 0-5%, Zr ４＋ : 0-5%, Sb ３＋ +Sn ４＋ +Ce ４＋ : 0-1%, Y³⁺: 0-3%, Al³⁺ / Ln³⁺ is 0.2-10.0, and the Rn ＋ Li ＋ Na ＋、 K ＋ It is one or more types of R ２＋ is Mg ２＋、 Ca ２＋、 Sr ２＋、 Ba ２＋の One or more types, Ln ３＋ La ３＋ , Gd ３＋ , Y ３＋ It is one or more types, and the anionic component is O ２－ and F － That is the case.

4. The glass according to any one of claims 1 to 3, comprising the following components in mol% and satisfying one or more of the following 10 conditions: 1)Li ＋ / (Mg ２＋ +Al ３＋ )は0.4~10.0; 2) Cu ２＋ / Al ３＋ は1.0~15.0; 3) (3) ２＋ ｭg ２＋ / (i ＋ +｡l ３＋ )は003566.00; 4) Ln ３＋ / R ２＋ is 0.01 or greater; 5) Ln ３＋ / (Ba ２＋ +Al ３＋ ) is 0.02 or higher; 6) P ５＋ / (Al ３＋ +Ln ３＋ ) is 5.0 to 50.0; 7) Cu ２＋ / Ln ３＋ is 2.0 or higher; 8) P ５＋ / R ２＋ 3.0 to 30.0; 9) Ln ３＋ / F － is 0.01 or greater; 10) F － / Cu ２＋ The range is 0.05 to 2.

0.

5. The glass according to any one of claims 1 to 3, comprising the following components in mol% and satisfying one or more of the following 11 conditions: 1) Al ３＋ / Ln ３＋ is 0.5 to 10.0; 2)Li ＋ / (Mg ２＋ +Al ３＋ )は0.6~7.0; 3)Cu ２＋ / Al ３＋ は2.0~10.0; 4) (3) ２＋ ｭg ２＋ / (i ＋ +｡l ３＋ )は0.5~5.00; 5) Ln ３＋ / R ２＋ is 0.03 to 1.0; 6) Ln ３＋ / (Ba ２＋ +Al ３＋ ) is 0.05 to 1.0; 7) P ５＋ / (Al ３＋ +Ln ３＋ ) is 10.0 to 35.0; 8) 3u ２＋ / n ３＋ は5.00~3000; 9) P ５＋ / R ２＋ 3.5 to 25.0; 10) Ln ３＋ / F － is 0.05 to 5.0; 11) F － / Cu ２＋ The range is 0.1 to 1.

5.

6. The glass according to any one of claims 1 to 3, comprising the following components in mol% and satisfying one or more of the following 11 conditions: 1) Al ３＋ / Ln ３＋ is 1.5 to 8.0; 2)Li ＋ / (Mg ２＋ +Al ３＋ )は1.2~3.0; 3)Cu ２＋ / Al ３＋ は4.0~7.0; 4) (3) ２＋ ｭg ２＋ / (i ＋ +｡l ３＋ )は0.8~2.00; 5) Ln ３＋ / R ２＋ is 0.07 to 0.5; 6) Ln ３＋ / (Ba ２＋ +Al ３＋ ) is 0.1 to 0.5; 7) P ５＋ / (Al ３＋ +Ln ３＋ ) is 15.0-25.0; 8) 3u ２＋ / n ３＋ は1000~15.00; 9) P ５＋ / R ２＋ is 5.0 to 10.0; 10) Ln ３＋ / F － is 0.1 to 1.0; 11) F － / Cu ２＋ The range is 0.3 to 0.

8.

7. Glass according to any one of claims 1 to 3, comprising the following components in mol%: P ５＋ : 56-68%, and / or Al ３＋ : 0.5-8%, and / or Cu ２＋ : 6-20%, and / or Rn ＋ : 7-20%, and / or R ２＋ : 3-16%, and / or Ln ３＋ : 0.1–6%, and / or Zn ２＋ : 0-5%, and / or Si ４＋ : 0-2%, and / or B ３＋ : 0-2%, and / or Zr ４＋ : 0-2%, and / or Sb ３＋ +Sn ４＋ +Ce ４＋ : 0 to 0.5%, and the Rn ＋ Li ＋ Na ＋ _K ＋ It is one or more of the following. ２＋ is Mg ２＋ Ca ２＋ , Sr ２＋ Ba ２＋ It is one or more of the following: Ln ３＋ La ３＋ , Gd ３＋ , Y ３＋ It is one or more species of [something].

8. Glass according to any one of claims 1 to 3, comprising the following components in mol%: P ５＋ : 60-65%, and / or Al ３＋ : 1-5%, and / or Cu ２＋ : 8-15%, and / or Rn ＋ : 10-17%, and / or R ２＋ : 5-14%, and / or Ln ３＋ : 0.5–4%, and / or Zn ２＋ : 0-2%, and / or Si ４＋ : 0-1%, and / or B ３＋ : 0-1%, and / or Zr ４＋ : 0-1%, and / or Sb ３＋ +Sn ４＋ +Ce ４＋ : 0 to 0.1%, and the Rn ＋ Li ＋ Na ＋ _K ＋ It is one or more of the following. ２＋ is Mg ２＋ Ca ２＋ , Sr ２＋ Ba ２＋ It is one or more of the following: Ln ３＋ La ３＋ , Gd ３＋ , Y ３＋ It is one or more species of [something].

9. The glass according to any one of claims 1 to 3, comprising the following components in mol%: Li ＋ : 5-25%, and / or Na ＋ : 0-10%, and / or K ＋ : 0-10%, and / or Mg ２＋ : 0-15%, and / or Ca ２＋ : 0-10%, and / or Sr ２＋ : 0-10%, and / or Ba ２＋ : 0-10%, and / or La ３＋ : 0-5%, and / or Gd ３＋ The percentage is 0-5%.

10. The glass according to any one of claims 1 to 3, comprising the following components in mol%: Li ＋ : 10-16%, and / or Na ＋ : 0-2%, and / or K ＋ : 0-2%, and / or Mg ２＋ : 2-8%, and / or Ca ２＋ : 0-2%, and / or Sr ２＋ : 0-2%, and / or Ba ２＋ : 1-6%, and / or La ３＋ : 0-2%, and / or Gd ３＋ : 0-2%, and / or Y ３＋ The percentage is 0.5-3%.

11. The glass according to claim 1 or 2, further comprising the following anionic components in mol%: Cl － +Br － +I － The percentage is 0-2%.

12. The glass according to any one of claims 1 to 3, comprising the following components in mol%: O ２－ : 85-99.5%, and / or F － The percentage is 0.5-15%.

13. The glass according to any one of claims 1 to 3, comprising the following components in mol%: O ２－ : 91-98%, and / or F － The percentage is 2-9%.

14. The transition temperature T of the glass ｇ The temperature should be 410°C or below, and / or the density ρ should be 3.3 g / cm³. ３ The following and / or the coefficient of thermal expansion α ２０－１２０℃ is 110 x 10 －７ / K or less, and / or hardness H ｖ It is 380 kgf / mm ２ Therefore, and / or Young's modulus E is 5500 × 10 ７ ~8500 x 10 ７ The glass according to any one of claims 1 to 3, wherein the material is Pa.

15. The transition temperature T of the glass ｇ The temperature is 370-390°C, and / or the density ρ is 3.0 g / cm³. ３ The following and / or the coefficient of thermal expansion α ２０－１２０℃ is 95 x 10 －７ / K or less, and / or hardness H ｖ It is 410 kgf / mm ２ Therefore, and / or Young's modulus E is 6500 × 10⁻⁶ ７ ~7500 x 10 ７ The glass according to any one of claims 1 to 3, wherein the material is Pa.

16. When the glass thickness is 0.1 to 0.5 mm, the wavelength λ corresponding to the wavelength when the transmittance reaches 50% within the wavelength range of 500 to 700 nm is... ５０ The transmittance τ at 635 nm or less and / or 400 nm is ４００ The transmittance is 80.0% or higher, and / or the transmittance τ at 500 nm. ５００ The transmittance is 83.0% or higher, and / or the transmittance τ at 1100 nm. １１００ The glass according to any one of claims 1 to 3, wherein the content is 10.0% or less.

17. When the glass thickness is 0.1 to 0.5 mm, the wavelength λ corresponding to the wavelength when the transmittance reaches 50% within the wavelength range of 500 to 700 nm is... ５０ The transmittance τ at 610-625 nm and / or 400 nm is ４００ The transmittance is 84.0% or higher, and / or the transmittance τ at 500 nm. ５００ The transmittance is 88.0% or higher, and / or the transmittance τ at 1100 nm. １１００ glass according to any one of claims 1 to 3, wherein the content is 3.0% or less.

18. The glass according to claim 16, wherein the thickness of the glass is 0.1 to 0.3 mm.

19. A glass element comprising the glass described in any one of claims 1 to 3.

20. A filter comprising glass according to any one of claims 1 to 3.

21. Equipment including glass as described in any one of claims 1 to 3.

22. A filter comprising the glass element according to claim 19.

23. Apparatus comprising the glass element described in claim 19.

24. Apparatus comprising the filter described in claim 20.

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