TWI226316B - A filter material - Google Patents

Abstract

A filter material is disclosed. The filter material includes: 15-25 weight % P2O5; 40-60 weight % Al2O3; 3-8 weight % B2O3; 5-10 weight % Li2O; 0-3 weight % SiO2; 0-3.5 weight % Ho2O3; 2-5 weight % CaO; 0-1 weight % Er2O3; 0-1 weight % FeO; 0-1.5 weight % Fe2O3; 0-0.5 weight % CuO; 3-7 weight % ZnO; 0-2.5 weight % TiO2; and 0-2.5 weight % Na2O; wherein the total weight of said filter material is 1. The filter material is useful in cooperating with digital image collecting system for its excellent transmittance characteristics and IR-filtered capability.

Description

1226316 A7 ^ ------ B7___ V. Description of the invention (I) [Field of the invention] The present invention relates to a filter material, in particular, a filter having a high calendering function and absorbing near infrared light. Materials are suitable for optical elements that generally meet the digital image expansion and extraction system, system (CCD, CM0S) light requirements and infrared erasing functions, and the optoelectronic industry of other imaging systems. [Background of the present invention] The digital image acquisition system (CCD, C M 0 S) is highly sensitive to infrared rays, and their most sensitive wavelength range varies with manufacturing equipment, but it is generally about 65. 〇11111 to 11001 ^, roughly belong to the infrared light domain. Therefore, light sources such as sunlight, electric lights, projection lights, lighters, etc., will generate a large number of infrared light sources, which will interfere with the visual effect of digital image capture devices on image colors. Therefore, these digital image capture devices must be installed at the incident light source. Set up a filter lens that absorbs or reflects infrared rays to prevent the infrared rays and avoid the interference of infrared rays. The manufacturing method of the filter wafer is based on glass, adding various micro-rhenium elements to make the filter wafer produce the required crystal structure to absorb or reflect light with different wavelengths, so its transmittance and reflectance It is extremely important to consider factors. At present, reflective < bell film optical materials are generally used in low-end products in the industry, but although its cost is low, its imaging color is poor, the process conditions are severe and difficult to grasp, and it has more water marks and peeling film in processing quality. And other disadvantages' applications are more limited. Absorption filter lenses are generally acidic materials. Most of them are boric acid or silicic acid-based filter lenses, which have poor environmental resistance. They have a short service life and are easily attached to hydrides or sulfides in the air. Standards, Wealth, and Miscellaneous Standards (Su 2497 Public Love) (Please read the precautions on the back before filling in the blocks on this page)

Binding -------- ^ Thread I 1226316 V. Description of the Invention (2) Atomization will occur. Therefore, there is an urgent need for a long-lasting, environmentally-resistant filter lens for use in optical components and industries that require filter materials that absorb near-infrared light or infrared filtering functions. Because of this, the inventor, in the spirit of active invention, is thinking about a "filter crystal material" that can solve the above problems. After several research experiments, he has completed this invention that benefits the world. [Summary of the present invention] The main purpose of the present invention is to provide a filter and optical material that can provide good penetrability to light from 400nm to 6 to 10nm, and effectively absorb light from 800nm to 1100nm. Near infrared to provide good infrared isolation characteristics. Another object of the present invention is to provide a filter material which can have optical characteristics that meet the light transmission requirements and infrared filter function of a digital image capture system. In order to achieve the above object, the filter material of the present invention mainly includes the following components: 15 to 25% by weight of P205; 40 to 60% by weight of Al2O3; 3 to 8% by weight of B2O3 5 to 10% by weight of Li20; 0 to 3% by weight of Si02; 0 to 3.5% by weight of Ho203; 2 to 5% by weight of CaO; 0 to 1% by weight of Er203; 0 to 1% FeO by weight; 0 to 1.5% by weight of Fe203; 0 to 0.5% by weight of CuO; 3 to 7% by weight of ZnO; 0 to 2.5% by weight of Ti02; Chinese national standards apply to this paper scale ( CNS) A4 size (210X297 mm) (Please read the precautions on the back before filling in the blocks on this page) Install --------- Order -------- Line! 1226316

And 0 to 2.5% by weight of Na2O; wherein the above-mentioned% is 0% by weight. Because the present invention does have an enhanced effect, an invention patent is applied in accordance with the law. [Brief description of the drawings] FIG. 1 is a transmission curve of a lens manufactured according to an embodiment of the present invention. [Detailed description of the preferred embodiment] The filter material of the present invention is sintered with alumina 820, phosphoric acid p205 series and some metal materials, which can be adjusted by adjusting the composition percentage and changing additives. Change the optical color and other physical properties of the filter lens, or add other transition metal oxides, so that the filter lens produces different colors to suit the needs of various different pickup systems. The method for forming a lens by the filter material of the present invention can be any conventional method for manufacturing lens glass. The filter material of the present invention can be applied to any application field of the filter material, preferably used as a filter, and most preferably used as a filter for an imaging device. The filter material of the present invention mainly includes the following components: 15 to 25% by weight of P205; 40 to 60% by weight of Al203; 3 to 8% by weight of 6203; 5 to 10% by weight 1% to 20%; 0 to 3% by weight of Si02; 0 to 3.5% by weight of 2ο203; 2 to 5% by weight of CaO; 0 to 1% by weight of Er203; 〇 To 0% by weight Fe0; 0 to 15% by weight Fe2O3; 0 to 0.5% by weight CuO; 3 to 7% by weight 2110; 0 to 2.5% by weight Ding丨 〇2; and 0 to 2.5% This paper size is applicable to China National Standard (CNS) A4 specifications (210X297). (Please read the precautions on the back before filling in the blocks on this page.) ------line! A7 B7 1226316 5. Description of the invention (today) Na20 by weight. The filter material of the present invention can be modified to include 0 to 0.5% by weight of BaO, 0 to 0.1% by weight of K20, 0 to 2% by weight (: 0, 0 to 3.5% by weight) NiO, 0 to 3% by weight Cr203, 0 to 0.1% by weight SnO, 0 to 1.2% by weight Dy203, 0 to 1.2% by weight Nd203, 0 to 0.15% by weight 813203 Or 0 to 0.2% by weight of Ce02. In the filter material of the present invention, P205, A1203, BaO, B2O3, K20, Li2O, Si02, Ho2O3, and CaO are the main bodies forming the glass structure, and some of them are individual The content is not limited, as long as it is in the above range; preferably P205, Al203, BaO, B203, κ20,

The total weight percentage of Li20, Si02, Ho203, and CaO to the total weight is 85-95%. In the filter material of the present invention, the ratio of the total weight percentage of p205 and A1203 to the total weight is between 55-85%, and preferably between 65-57.5%, to make the material more transparent. . Among them, the ratio of P 2 0 5 and A 12 0 3 is not limited, and it is preferably 2: 1. In the filter material of the present invention, B a 〇 is a balanced substance that makes the structure transparent, b 2 〇 3, κ 2 〇,

LhO, Si02, H02 and CaO are stable compounds that need to be added during high temperature bonding. At the same time, they can destroy the colored structure of A1203 and make the glass structure transparent. BaO, B203, K2O, Li2O The total weight percentage of Si02, SiO2, and CaO is preferably 15-20% of the total weight. CoO, Er2O3, NiO, Fe0, Fe203, Cm2 0, Cr2 03, and Z η 0 in the filter material of the present invention are components that affect optical properties, and the individual content thereof is not limited as long as it is within the foregoing range It can be, preferably, (Please read the precautions on the back before filling in the blocks on this page) Install --------- Order ------- line ·.

1226316 V. Description of the invention (5)

The total weight percentage of Em Ni〇, Fe〇, Fe203, CuO, and Cr is 6-10% of the total weight. If coo, Er2h,

The total weight percentage of NiO, Fe0, Fe203, Cu0, and Cr is too large, and capitalization will occur as a whole. In this way, once it is made small, it cannot be used as an optical material. Among them, Eγ2 03 mainly controls the absorption in the ultraviolet range, Fe2 03 and CuO mainly control the absorption in the infrared range, and Fe 0 is used for son-in-law Fe 2 03 and CuO, and the remaining components can destroy the basic structure of the crystal. Er2O3, Fe0, Fe2O3, and Cu0 were inserted into the basic structure. The filter materials of the present invention are Ti02, Sn0, Dy2 03, Nd2 03,

SbA3, CeO2, and NaW are components that affect the crystalline composition, and the individual content is not limited, as long as it is within the aforementioned range, and its total weight percentage is preferably 2-3% of the total weight, so that The crystal can maintain the uniformity and the structural density of the crystal particles during crystallization. The filter material of the present invention is preferably used in filters and optical mirrors. In order to make your reviewing committee better understand the technical content of the present invention, the preferred embodiments are described below. Example 1 The manufacturing process of this example is to fully mix all the ingredients in Table 1 below (please read the precautions on the back before filling in the blocks on this page). ---------- Order ---- ---- ® Line 丨 Table 1 Composition P2〇5 ai2o3 BaO B2O3 K20 U20 Si02 H〇2〇3 CaO ratio 29.37 45.60 0.13 4 * 21 0.03 5.25 1.13 1.24 3.35 Composition CoO Er2 03 NiO FeO Fe203 cub Cr203 ZnO ratio 0.50 0.23 0.85 0.55 0.45 0.47 0.52 4.10 Composition Ti02 SnO Dy203 Nd203 Sb203 Ce02 Na20 Area ratio 0.70 0.03 0.25 0.25 0.04 0.05 0.70--8 This paper size applies to China National Standard (CNS) A4 size (210X297 mm) 1226316 A7 _______B7_____ 5. Invention After the description (ii), put it in a crucible with a capacity of about 100 ml, and melt the mixture for 3 hours at a temperature of i 3 501, and then cool it down to 5 0 ° C in 2 hours, and then The molten crystal liquid was taken out and injected into a phantom which had been preheated to a temperature of 5 5 °. It is then annealed in an annealing furnace at 480 ° C for 16 hours, and then naturally cooled down for 4-5 hours to room temperature. Next, the original coarse crystal embryo obtained as described above is leveled for subsequent processing, and then the crystal embryo is subjected to procedures such as slicing, grinding, precision polishing, and shape cleaning to form lenses. Then, a protective film of oxidized silicon or silicon oxide is plated by a general evaporation method as an anti-environment protection layer to prevent the hydride or sulfide in the air from adhering to cause surface fogging. Finally, the lens is made Precision cutting.眚 Example 2 The manufacturing method of this embodiment is the same as that of Example 1 except that the manufacturing method and the subsequent processing operations are the same as those of Example 1. The components are shown in Table 2. Table 2 Composition P2〇5 ai2o3 BaO B2O3 K20 Li20 Si02 H〇2〇3 CaO ratio 23.37 48.87 0.13 5.21 0.03 7.25 1.13 1.24 3.35 Composition CoO Er203 NiO FeO Fe2 03 CuO Cr203 ZnO _ ratio 0.50 0.23 0.85 0.50 0.40 0.17 0.82 4.10 Ti〇2 SnO Dy203 Nd203 Sb203 Ce02 Na20 • Proportion 0.70 0.03 0.25 0.25 0.04 0.05 0.70 _-Example 3 9 This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) --------- ---- ^ Install --------- Order -------- AW (Please read the notes on the back before filling in the columns on this page) 1226316 A7 B7 V. Description of the invention (7) The manufacturing method of this embodiment is different from that of the embodiment 丨 except that the manufacturing process and subsequent processing operations are the same as those of the embodiment 1, and the components are shown in Table 3. Table 3 Composition P2〇5 AI2O3 BaO B2O3 K20 U2〇Si02 H〇2〇3 CaO ratio 22.37 55.70 0.13 4.20 0.03 5.10 1.13 1.24 2.35 Composition CoO Er203 NiO FeO Fe203 CuO Cr203 ZnO Ratio 0.38 0.23 0.65 0.40 0.28 0.17 0.52 3.40 Component Ti02 SnO Dy203 Nd203 Sb2 03 Ce02 Na20 ratio 0.70 0.03 0.23 0.25 0.04 0.05 0.70 The transmission curves of the lenses obtained in Examples 1 to 3 were obtained, and curves 1, 2 and 3 of Figure 1 were obtained respectively. From this figure, we can know that the lens of the present invention The crystal structure has a high light transmittance between 400nm and 6100nm, and has a strong absorption of near infrared rays between 800nm and 100nm. The test sample can be tested with a lens with a thickness of 0.6mm ~ 0.7mm. This characteristic is similar to that of the ordinary SiO2 series silica sand or the lens using the B203 borax system. The thickness must be 1.0mm ~ 1.2mm to check the phase. Compared with the general use of SiO2 series of silica sand or the use of B203 borax series lenses. In addition, the filter material of this article is a weak acid system, and the environmental test is performed under the same environment as the currently available light-emitting wafers. The results show that the furnace light material of the present invention is not easy to react with hydride or sulfide in the air, Strong environmental damage ability and long service life. In summary, the present invention, no matter in terms of purpose, means and effect, shows its characteristics that are very different from the conventional technology, & one of "filter crystal materials" ---------- --- # 装 .1 (Please read the precautions on the back before filling in the blocks on this page)

1226316 A7 _B7_ V. Description of the invention (2) Great breakthrough. However, it should be noted that the above-mentioned embodiments are merely examples for the convenience of description. The scope of the rights claimed in the present invention should be based on the scope of the patent application, rather than being limited to the above-mentioned embodiments. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) ------------- installed --------- order -------- ^ Line — (Please read the notes on the back before filling in the blocks on this page)

Claims (1)

1226316 :) _ ". i A8, 'Yiyikoubi, ....] C8 __j D8 VI. Application for patent scope 1. A filter material, mainly containing the following components: 15 to 25% by weight of P205; 40 to 60% by weight of Al203; 3 to 8% by weight of B203; 5 to 10% by weight of Li20; 0 to 3% by weight of Si02; 0 to 3.5% by weight of Ho203; 2 CaO to 5% by weight; Er203 from 0 to 1% by weight; FeO from 0 to 1% by weight; Fe203 from 0 to 1.5% by weight; CuO from 0 to 0.5% by weight; 3 to 7% ZnO by weight percentage; Ti02 by 0 to 2.5% by weight; and Na2O by 0 to 2.5% by weight; wherein the above-mentioned percentages are by weight. 2. The filter material according to item 丨 of the patent application scope, further comprising 8% to 0.5% by weight. 3. The filter material according to item 1 of the patent application scope, further comprising 0 to 0.1 ° /. Weight percent ruler 20. 4. The filter material according to item 丨 of the patent application scope, further comprising 0 to 2% by weight of c00. 5. The filter material according to item 丨 of the patent application scope, further comprising 0 to 3.5 ° /. ≫ ^ 〇 by weight. 12 This paper size applies to China National Standard (CNS) A4 specifications (210X297 praise) '' (Please read the notes on the back before filling in the columns on this page) 1226316 6 · The filter material described in the first paragraph of the patent application range to 3% by weight (: 1> 20.3). The scope of the patent application includes ο 7 · The filter described in the first scope of the patent application 80.1% of light material to 0.1% by weight. 8. Filter material as described in item 1 of the patent application range to 1.2% by weight of Dy203. 9 • Filter as described in item 1 of the scope of patent application. Light material to 1.2% by weight of Nd203. 10. The filter material according to item 1 of the patent application park, which further contains 81) 203 of 0 to 0.15% by weight. 11_ The filter material according to item 1 of the scope of patent application, further comprising Ce02 in an amount of 0 to 0.2% by weight. 12. The filter material according to item 1 of the scope of the patent application, wherein the total weight percentage of P2O5, Al2O3, BaO, B2O3, K20, Li20, Si02, H2O3, and CaO is between 85 to 95%. 13. The filter material described in item 1 of the scope of the patent application, wherein the total weight percentage of? 205 and 80? 203 is in the range of 65 to 75%. 14. The filter material according to item 1 of the patent application park, wherein the total weight percentage of BaO, B203, K20, Li20, Si02, Ho203, and CaO is in the range of 15 to 20%. 15. The filter material according to item 1 of the scope of patent application, wherein the total weight percentage of CoO, Er2O3, NiO, FeO, Fe2O3, CuO, Cr203, and ZnO is in the range of 6 to 10%. It contains more ο It contains more 0 It contains more 0 (Please read the precautions on the back before filling in the blocks on this page) L · ·· Install ----- Order ------- line, 13 papers Standards are applicable to China National Standard (CNS) A4 specifications (210X297 mm) 1226316 A8 · B8 C8 __ ____D8 VI. Patent application scope 16 · Filter materials as described in item 1 of the patent application scope, of which T102, Sn The total weight percentage of 〇, Dy203, Nd203, Sb203, Ce02, and NazO is in the range of 2 to 3%. 17. The filter material according to item 1 of the scope of patent application, which is used for a filter. (Please read the notes on the back before filling out the columns on this page) Install ----- Order ------- Line! This paper size applies to China National Standard (CNS) A4 (210X297 mm)