WO2008072368A1 - 可視光用ガラス偏光子 - Google Patents
可視光用ガラス偏光子 Download PDFInfo
- Publication number
- WO2008072368A1 WO2008072368A1 PCT/JP2007/001366 JP2007001366W WO2008072368A1 WO 2008072368 A1 WO2008072368 A1 WO 2008072368A1 JP 2007001366 W JP2007001366 W JP 2007001366W WO 2008072368 A1 WO2008072368 A1 WO 2008072368A1
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- WO
- WIPO (PCT)
- Prior art keywords
- glass
- light
- polarizer
- visible light
- silver
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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- 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
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
- C03C14/006—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/008—Surface plasmon devices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2073—Polarisers in the lamp house
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3144—Cooling systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3167—Modulator illumination systems for polarizing the light beam
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- 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
- C03C2214/00—Nature of the non-vitreous component
- C03C2214/30—Methods of making the composites
Definitions
- the present invention relates to a glass polarizer having polarization characteristics that can be industrially used for light in the visible light region.
- the present invention relates to a glass polarizer for visible light having excellent heat resistance and light resistance that can be used as a polarizer for a projection type liquid crystal display device.
- projection liquid crystal display devices have been widely used as video display devices that display large screens.
- the rear projection type liquid crystal display device is mainly used for presentation of personal computer data
- the front projection type liquid crystal display device is mainly used for presentation of personal computer data.
- the projection type liquid crystal display device has a configuration in which an image on a small liquid crystal element is enlarged and projected on a large screen using a projection optical system.
- Non-Patent Document 1 large screen display
- FIG. 1 shows a configuration diagram of a typical projection type liquid crystal display device.
- the light from the light source 4 is separated into blue (B), green (G) and red (R) components by optical components 5 to 16, and the liquid crystal elements 2 B, 2 G and 2 R corresponding to the respective components.
- Each liquid crystal display element 2R, 2G and 2B has an incident side polarizer 1R, 1G and 1B on the incident side and an output side polarizer 3R, 3G and 3B on the output side.
- a pair of polarizers composed of an entrance-side polarizer and an exit-side polarizer, corresponding to red, green, and blue, has a function of selectively passing light having a predetermined polarization direction that has passed through the liquid crystal element.
- the light of the three primary colors that has passed through the liquid crystal elements 2R, 2G, and 2B becomes a light intensity modulated image signal.
- These three primary colors are further synthesized by a synthesis prism 17 and further projected onto a screen 19 through an enlarged projection lens system 18.
- the polarization characteristic required for the polarizing element is to transmit an optical signal having a desired polarization plane and to block an unnecessary optical signal having a polarization plane orthogonal to the optical signal.
- the ratio of these transmittances is called an extinction ratio, and is widely used by those skilled in the art as a figure of merit that expresses the performance of a polarizing element. If this index is used, the performance required for a polarizing element applied to a projection type liquid crystal display device is expressed as having a large transmittance and a large extinction ratio for an optical signal. It is said that an industrially available polarizer preferably has a transmittance of 70 ⁇ 1 ⁇ 2 or more with respect to light of a wavelength to be used and an extinction ratio of 10: 1, preferably 30: 00: 1. (Patent Document 1)
- a social demand for a projection-type liquid crystal display device is to realize a larger and clearer image with a smaller device.
- the application of a light source with a larger amount of light and the use of a liquid crystal element with a smaller area are recent technological trends.
- high energy density light is introduced not only into the liquid crystal element but also into the polarizer placed before and after the liquid crystal element.
- a polarizer having a function of absorbing unnecessary light is required to have particularly high heat resistance and light resistance.
- dichroic polarizers and non-dichroic polarizers (such as Brewster polarizers) that selectively absorb light depending on the plane of polarization (Patent Document 2). See).
- the dichroic polarizer is a desirable element for a projection type liquid crystal display device that is particularly required to be miniaturized because the element is thin and does not require a special device that absorbs unnecessary light.
- a polarizing film made of an organic resin is used by being bonded to a sapphire substrate having high thermal conductivity (Patent Document 3).
- Patent Document 3 polarizers bonded with sapphire with excellent thermal conductivity are also in line with technical demands for higher brightness in recent years.
- Projection-type liquid crystal display to protect the organic resin film from heat without satisfying the requirement that the polarizer function does not deteriorate due to heat generation
- the equipment is equipped with a cooling device including a cooling fan. Cooling devices not only contradict the social need for miniaturization, but also create another problem of noise.
- Patent Document 1 As a method for solving this technical problem, an idea of applying polarized glass applied to an element for optical communication has been proposed (Patent Document 1).
- the optical wavelength used for optical communication is in the far-infrared region and is significantly different from visible light. Therefore, the technology of glass polarizer for optical communication immediately controls the light of the projection type liquid crystal display device. Is not immediately applicable.
- the invention disclosed in Patent Document 1 does not disclose a technique for imparting an effective characteristic to light in the visible light region to a glass polarizing element. It is difficult to realize a projection type liquid crystal display device using a child.
- Polarized glass is characterized in that it contains fine metal particles with shape anisotropy oriented and dispersed in an optically transparent glass substrate, and is an anisotropic surface plasmon present on the surface of fine metal particles.
- the polarization characteristic is realized by using a unique resonance absorption phenomenon (see Patent Document 4 and Non-Patent Document 2).
- FIG. 2 shows the surface plasmon resonance absorption characteristics of the metal fine particles cited from Patent Document 4.
- Graph A in Fig. 2 corresponds to surface plasmon resonance absorption by spherical metal particles.
- the resonance absorption of rod-shaped metal particles having shape anisotropy exhibits different characteristics depending on the correlation between the polarization plane of incident light and metal particles having shape anisotropy.
- light having a polarization plane parallel to the longitudinal direction of the metal particles has a small transmittance due to strong absorption.
- the transmittance for light having a polarization plane parallel to the longitudinal direction of the metal particles is expressed as T
- the light having a polarization plane perpendicular to the longitudinal direction of the metal particles has a small absorption, and therefore shows a higher transmittance.
- the transmittance for light having a polarization plane perpendicular to the longitudinal direction of the metal particles is expressed as just%. With this mechanism, polarization characteristics are realized. The characteristics disclosed in FIG.
- the characteristics required for the projection type liquid crystal display device that is, the ratio between the parallel absorption curve ⁇ and the vertical absorption curve C between 500 nm and 600 nm, In other words, it has not realized that the extinction ratio is sufficiently large and that the parallel absorptivity value is sufficiently large.
- Patent Document 7 is a technology that provides a polarizing element effective for light in the visible light region by utilizing the characteristics of copper fine particles having shape anisotropy (the disclosed characteristics are applied to FIG. 3). As shown in Fig. 3, it is not possible to achieve a large extinction ratio, especially for wavelengths below 600 nm, ie parallel transmission with respect to the transmission curves C and E perpendicular to the stretching axis. It is concluded that there is no practical characteristic that the ratio (extinction ratio) of the D and F values of the rate curves is small and the transmittance C is only 10 to 60%.
- the ratio (extinction ratio) of the D and F values of the rate curves is small and the transmittance C is only 10 to 60%.
- Patent Document 8 discloses a technique that realizes dichroic absorption with respect to wavelengths in the visible light region.
- the characteristics applicable to the projection type liquid crystal display device to which the present invention is intended that is, Since there is no specific and quantitative description of achieving high transmittance and high extinction ratio, it cannot be realized as a polarizer.
- Patent Document 9 proposes a technique for obtaining an effective extinction ratio in the visible light region, and does not disclose a technique for realizing high transmittance.
- CODIXX is a manufacturing technology that introduces silver ions by diffusing from the glass surface, deposits silver fine particles by heat treatment, and then stretches them to impart shape anisotropy to the silver fine particles.
- Is used to sell polarizing glass that is effective in the visible light region Non-patent Document 3
- the ion diffusion process is generally unstable, and the concentration distribution of silver ions in the glass thickness direction tends to cause nonuniformity in the size of the silver particles produced. As a result, there is a weak point that the characteristic variation of the polarizer occurs.
- the stretching particles are solid metallic silver particles, they cannot be stretched unless the stretching tension is larger than the silver halide grains that are stretched in a droplet state, so that there is a problem that the glass tends to break during stretching. .
- a communication infrared light glass polarizer widely used in industry uses a different manufacturing method. That is, as disclosed in Patent Document 4 and Patent Document 5, a production method is adopted in which silver fine particles are produced by once precipitating silver halide and then reducing the silver halide. However, a polarizer produced by this production method does not exhibit practical performance that can be used in the visible range (Patent Document 5).
- FIG. 1 of Patent Document 5 (cited as FIG. 4 in this specification) and paragraph “0 0 2 2” of the specification state as follows. “ ⁇ ⁇ Silver halide glass is unsatisfactory to produce an effective optical polarizer over the entire range of 4 0 0 ⁇ ⁇ _ 7 0 0 nm.”
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-7 7 8 50
- Patent Document 2 Special Table 2 0 0 2— 5 1 9 7 4 3
- Patent Document 3 Japanese Patent Application Laid-Open No. 2 0 00 _ 2 0 6 5 0 7
- Patent Document 4 U.S. Pat.No. 4,479,8 1 9
- Patent Document 5 Japanese Patent No. 1 6 1 8477
- Patent Document 6 Japanese Patent No. 274060 1
- Patent Document 7 Japanese Patent No. 2885655
- Patent Document 8 Special Table 2004-523804
- Patent Document 9 Japanese Patent Publication No. 2-406 19
- Patent Document 10 Japanese Patent No. 26280 14
- Patent Document 11 Japanese Patent No. 3549 1 98
- Non-Patent Literature 1 Nobuo Nishida, Large Screen Display (Series Advanced Display Technology 7), Kyoritsu Publishing, Tokyo, 2002
- Non-Patent Document 2 S. L ink and M. A. E I _S ay ed, J. P h y s. Ch em. B 1 03 (1 999) 84 1 0-8426
- Non-Patent Literature 3 Takuichi Suzuki, Industrial Materials Vol.52, No.12, pp. 102-107
- the present invention is applicable to a projection-type liquid crystal display device, etc., starting from silver halide-containing glass, and has excellent transmittance and quenching for light in the visible light region (500 nm to 600 nm). It is an object to provide a technique for realizing a glass polarizer having a ratio.
- the glass polarizing element of the present invention utilizes surface plasmon resonance of metal fine particles having shape anisotropy oriented and dispersed in glass. While using the same principle, the prior art shown in Fig. 4 has not realized the performance that a polarizer applicable to a projection-type liquid crystal display device should have. The reason for this will be described with reference to FIG.
- Curve C in Fig. 2 shows that surface plasmon resonance absorption for light having a polarization plane orthogonal to the longitudinal direction of the metal fine particles having shape anisotropy exists around 380 nm.
- curve C in Figure 2 shows that the effect extends from 500 nm to 600 nm. This effect is the polarization plane to pass It shows that it has the effect of transmitting light having a higher transmittance.
- the curve B shows the absorption of light with a polarization plane parallel to the longitudinal direction, which indicates that the difference in polarization plane causes a large difference in the absorptivity, that is, the transmittance near 600 nm.
- the inventors have found that the transmittance in the vicinity of 500 nm can be improved by reducing the size of the silver particles. That is, by using silver particles prepared from silver halide having a particle size of 40 nm or less, the transmittance T ⁇ % for light having a polarization plane perpendicular to the longitudinal direction of the metal fine particles is increased. Found that it would be possible.
- the use of silver halide having a small particle size is achieved by the transmittance T II of light blocked by a polarizer, that is, light having a polarization plane parallel to the longitudinal direction of metal fine particles having shape anisotropy. It produced another effect of suppressing 0/0 to a small value close to 500 nm. As a result, by using silver halide with a small grain size, it is possible not only to increase the transmittance of light to be transmitted, but also to increase the extinction ratio. It became possible to keep.
- the present invention is based on the conventional technology in that the starting material is a glass material in which silver halide is dispersed and precipitated. In order to realize an effective function for light in the visible light region, Need to add technology.
- the conventional polarizing glass technology using silver halide for optical communication used in the near infrared region of 1.3 to 1.5 m is a mixed crystal of silver chloride and silver bromide and Polarizing glass has been produced by stretching particles having a particle size of 50 nm or more. For this reason, the technique regarding the polarizing glass for visible regions by this invention is not disclosed at all.
- a mercury lamp is used as the light source, and the visible light source often includes an ultraviolet light component.
- Glass with silver halide fine particles deposited has an absorption band that extends from the visible to the near-infrared when irradiated with ultraviolet light, and the glass is colored.When the ultraviolet light is blocked, the glass returns to its pre-irradiation state. And is widely known by the name of photochromic glass.
- Patent Document 9 As prior art related to a polarizing glass that does not exhibit photo-irregularity, Cu O is hardly contained or the mother glass composition is limited (in molar ratio (R 2 0_A I 2 0 3 ): B 2 0 3 ⁇ 0 25) technology (Patent Document 9), a technology that substantially does not contain CuO and adds an effective amount of C e 0 2 to keep silver in the glass in an oxidized state (Patent Document 10) and substantially free of C u O, K 2 0 and contains many and B a O was prevented reduction is limited to compositions strengthened basic pressure forte glass to metallic silver silver technique (Patent Document 1 1) [0034] In the present invention, an alkali oxide of 0.
- Nonfotoku port Mick glass By adding 5 to 5 wt% of nitrate, silver was dissolved as ions in the glass, and a non-photochromic glass could be obtained. That is, without the addition of C u O and C e 0 2 used as a silver oxidizing agent in a conventional technology, and, without limiting the composition of the base glass, could be obtained Nonfotoku port Mick glass.
- a glass polarizer having a transmittance of 75% or more and an extinction ratio of 25 dB or more in the wavelength region from 500 nm to 600 nm. can do.
- the projection-type liquid crystal display device to which the glass polarizer having such performance and heat resistance and light resistance (particularly UV resistance) is applied enables the use of a light source with higher energy, and as a result, A small and brighter display device can be realized.
- the power of conventional resin polarizing films has been observed to deteriorate due to heat and light.
- the image quality of the projection-type LCD can be maintained at a high level.
- FIG. 1 is a conceptual diagram of an optical engine of a liquid crystal projector (Patent Document 1).
- FIG. 2 is a graph showing absorption spectra (Patent Document 4) of stretch-oriented silver particles and non-oriented silver particles.
- FIG. 3 is a graph showing a transmittance curve (Patent Document 7) of light polarized by visible light by stretching of copper particles.
- FIG. 4 is a graph showing a visible light polarized light transmittance curve (Patent Document 7) by stretching of silver particles.
- FIG. 5 is a graph showing light transmittance and extinction ratio curves of Example 1 in the range of 4800 nm to 620 nm.
- FIG. 6 is a graph showing light transmittance and extinction ratio curves of Example 2 in the wavelength range from 4800 nm to 620 nm.
- FIG. 7 is a graph showing light transmittance and extinction ratio curves in the wavelength range of 4 80 nm to 6 20 nm in Example 3.
- FIG. 8 is a graph showing light transmittance and extinction ratio curves of Example 4 in the range of 4800 nm to 620 nm.
- FIG. 9 is a graph showing light transmittance and extinction ratio curves of Example 5 in the wavelength range from 4800 nm to 620 nm.
- FIG. 10 is a graph showing light transmittance and extinction ratio curves of Example 6 in the wavelength range of 4800 nm to 620 nm.
- FIG. 11 is a graph showing the light transmittance and extinction ratio curve of Comparative Example 1 in the wavelength range of 4800 nm to 620 nm.
- FIG. 12 is a graph showing light transmittance and extinction ratio curves in the wavelength range of 4 80 nm to 6 20 nm of Comparative Example 2.
- Manufacturing technology for carrying out the present invention is based on the technology for manufacturing known infrared polarizing glass, and technology for refining silver halide precipitated grains and technology for preventing the realization of photoguchimism are added. It is realized by doing.
- a glass batch having a predetermined composition is prepared.
- the glass applied to the polarizer used in the visible light region must be selected from glass that does not have so-called photochromic properties, whose transmittance deteriorates when irradiated with light.
- glass materials must be devised to strictly avoid copper oxide impurities.
- the composition of the amount of silver halide introduced is finally selected to be a value that can achieve both transmittance and extinction ratio.
- a glass batch having a predetermined composition is melted and poured into a mold to produce a plate-like glass.
- metal halide particles are deposited in the mother glass by heat treatment. In general, the lower the heat treatment temperature and the shorter the heat treatment time, the smaller the particle size.
- the heat treatment conditions are optimized depending on the glass type and composition.
- the mother glass in which metal halide particles having an average particle diameter of 40 nm or less are dispersed is subjected to a predetermined processing to become a plate-like preform and is transferred to a stretching process.
- the viscosity of the glass directly the heating temperature
- the stretched glass is subjected to a reduction treatment so that part or all of the stretched silver halide grains become silver particles.
- the time and temperature of the reduction treatment and the atmosphere determine the depth of the reduced metal particle layer present near the surface and must be carefully determined to achieve the final properties. Thereafter, an antireflection film is formed to complete the polarizing element of the present invention.
- Table 1 shows examples and comparative examples.
- the technical scope of the present invention is not limited to the following examples.
- This raw material batch was melted in a platinum crucible with a capacity of 3 OO cc at 1 430 ° C for 4 hours, then poured into a mold and pressed with a roller, approximately 250 x 60 x 2.5 mm thick sheet glass Got.
- This plate glass was heat-treated to precipitate silver chloride particles.
- the grain size of silver chloride grains was controlled by the heat treatment temperature and heat treatment time shown in Table 1.
- Table 1 also shows the results of measuring the average particle size of silver chloride grains using an electron microscope.
- the obtained glass preform is set vertically in a stretching furnace, and the preform is fed at a constant speed and the stretching is performed while the preform feeding speed and the take-up speed are balanced, and stretching is performed. It was.
- Table 1 shows the viscosity and stretching tension of the glass during stretching (load per unit area on the glass). The stretching tension was controlled mainly by the glass heating temperature. (These speed settings are also shown in Table 1.)
- Table 1 shows the polarization characteristics of the polarizing glass thus produced. Also, the examples "! ⁇ 6 and comparative examples"! The transmittance spectrum (T ⁇ %) of light having a polarization plane perpendicular to the longitudinal direction of the metallic silver particles in the wavelength range of 500 nm to 600 nm (actually 480 nm to 62 O nm) of Figures 5 to 10 and Figures 11 and 12 show the extinction ratio data in the wavelength range.
- the extinction ratio is 500 ⁇ in the transmission spectrum measured using a spectrophotometer.
- Calculated from% by the following formula.
- Table 1 shows the minimum extinction ratio in the wavelength region of 500 nm to 600 nm.
- CI in glass composition 0.1% and 0.2% of 0.3% by weight of glass were dissolved with equimolar amounts of Br: 0.23% and 0.45%, and then halogenated.
- Polarized glass was prepared using the same method and conditions as in Example 1 for glass preforms that had been heat-treated so that the average particle diameter of silver particles was 18 nm, which was the same as in Example 1, and the polarization characteristics were compared. As a result, both the spectra of the light of the polarization plane perpendicular to the major axis and minor axis direction of the metallic silver particles are shifted to the longer wavelength as the amount of Br increases, and at 500-60 Onm. The average transmittance and minimum extinction ratio decreased from 82% and 25 dB of Example 1 with CI only to 76%, 25 dB, 68%, and 8 dB, respectively.
- the glass polarizers obtained in Examples 1 to 6 and Comparative Examples 1 and 2 were irradiated with a 500 W xenon lamp at a distance of 40 cm for 15 minutes. The change in transmittance was visually observed and the change in transmittance at 650 nm before and after irradiation was measured to determine the presence or absence of photochromic properties. As a result, in any of the polarizers obtained in Examples 1 to 6 and Comparative Examples 1 and 2, no change was observed before and after irradiation, and it was confirmed that no photochromic characteristics were exhibited. This means that the glass polarizer according to the present invention does not cause deterioration of polarization characteristics or transmittance characteristics even when irradiated with light of ultraviolet and visible short wavelengths.
- the glass component is substantially free of a copper compound, and a glass raw material corresponding to 0.5 to 5 wt% of the glass oxide composition is introduced with nitrate to melt.
- a polarizer that does not exhibit photochromic characteristics, that is, does not cause deterioration of polarization characteristics or transmittance characteristics even when irradiated with light of ultraviolet and visible short wavelengths.
- an excellent transmittance having an average transmittance of 75% or more (Tl% 500 to 600 nm ) and an extinction ratio of 25 dB or more is obtained.
- a polarizer can be provided. This can be used for a liquid crystal display device such as a liquid crystal projector with sufficient performance. Also follow Considering that conventional polarizers are used by attaching a resin-made polarizing film that is sensitive to heat and ultraviolet rays to sapphire, quartz glass, or glass substrates, the mother glass has high heat resistance and thermal shock resistance.
- the optical engine of the projector itself can be simplified, for example, cooling measures including the installation of a cooling fan can be reduced or unnecessary. Conceivable. Furthermore, the glass polarizer according to the present invention does not exhibit photochromic characteristics, and other performance is hardly deteriorated, so that the image quality of the liquid crystal projector is maintained high, and as a result, the life of the liquid crystal projector itself is extended. Be expected.
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Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008549195A JP4928564B2 (ja) | 2006-12-15 | 2007-12-06 | 可視光用ガラス偏光子 |
ES07849799T ES2404064T3 (es) | 2006-12-15 | 2007-12-06 | Polarizador de vidrio y proceso para producir el mismo |
EP07849799A EP2093595B1 (en) | 2006-12-15 | 2007-12-06 | Glass polarizer for visible light |
CN2007800146247A CN101427165B (zh) | 2006-12-15 | 2007-12-06 | 可见光用玻璃偏振器 |
US12/226,815 US8077389B2 (en) | 2006-12-15 | 2007-12-06 | Glass polarizer for visible light |
HK09110194.4A HK1132333A1 (en) | 2006-12-15 | 2009-11-02 | Glass polarizer for visible light |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006337871 | 2006-12-15 | ||
JP2006-337871 | 2006-12-15 |
Publications (1)
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WO2008072368A1 true WO2008072368A1 (ja) | 2008-06-19 |
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PCT/JP2007/001366 WO2008072368A1 (ja) | 2006-12-15 | 2007-12-06 | 可視光用ガラス偏光子 |
Country Status (7)
Country | Link |
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US (1) | US8077389B2 (ja) |
EP (1) | EP2093595B1 (ja) |
JP (1) | JP4928564B2 (ja) |
CN (1) | CN101427165B (ja) |
ES (1) | ES2404064T3 (ja) |
HK (1) | HK1132333A1 (ja) |
WO (1) | WO2008072368A1 (ja) |
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JP2011059593A (ja) * | 2009-09-14 | 2011-03-24 | Okamoto Glass Co Ltd | ガラス偏光素子及びその製造方法 |
WO2012105413A1 (ja) * | 2011-02-02 | 2012-08-09 | 日東電工株式会社 | ガラス用保護シート |
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JP5708095B2 (ja) * | 2011-03-18 | 2015-04-30 | セイコーエプソン株式会社 | 偏光素子の製造方法 |
JP5708096B2 (ja) * | 2011-03-18 | 2015-04-30 | セイコーエプソン株式会社 | 偏光素子の製造方法 |
CN108051932A (zh) * | 2018-01-16 | 2018-05-18 | 苏州千层茧农业科技有限公司 | 一种防汽车眩光的眼镜 |
US10897602B2 (en) * | 2018-07-27 | 2021-01-19 | Fujifilm Corporation | Projection display device for performing projection and imaging comprising optical image emitting light valve and imaging optical system |
JP2020016857A (ja) * | 2018-07-27 | 2020-01-30 | 富士フイルム株式会社 | 投写型表示装置 |
JP6804168B2 (ja) * | 2018-10-15 | 2020-12-23 | 日東電工株式会社 | 位相差層付偏光板およびそれを用いた画像表示装置 |
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JPS56169140A (en) * | 1980-04-28 | 1981-12-25 | Corning Glass Works | Manufacture of polarizing glass |
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JPH0240619B2 (ja) | 1982-09-29 | 1990-09-12 | Corning Glass Works | |
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JP2740601B2 (ja) | 1991-10-14 | 1998-04-15 | ホーヤ株式会社 | 銅含有偏光ガラス及びその製造方法 |
JP2885655B2 (ja) | 1993-12-15 | 1999-04-26 | コーニング インコーポレイテッド | ガラス製の偏光子およびその製造方法 |
JP2000206507A (ja) | 1998-03-27 | 2000-07-28 | Kyocera Corp | 液晶プロジェクタ装置用透明体及び偏光板 |
JP2002519743A (ja) | 1998-07-04 | 2002-07-02 | エフ.オー.ベー. ゲーエムベーハー ゲゼルシャフト ツァ フェアティグンク ファルビゲァ オプトエレクトロニシャー バウエレメンテ | 紫外線偏光体の製造方法 |
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- 2007-12-06 CN CN2007800146247A patent/CN101427165B/zh active Active
- 2007-12-06 ES ES07849799T patent/ES2404064T3/es active Active
- 2007-12-06 US US12/226,815 patent/US8077389B2/en active Active
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011059593A (ja) * | 2009-09-14 | 2011-03-24 | Okamoto Glass Co Ltd | ガラス偏光素子及びその製造方法 |
WO2012105413A1 (ja) * | 2011-02-02 | 2012-08-09 | 日東電工株式会社 | ガラス用保護シート |
CN103339078A (zh) * | 2011-02-02 | 2013-10-02 | 日东电工株式会社 | 玻璃用保护片 |
Also Published As
Publication number | Publication date |
---|---|
HK1132333A1 (en) | 2010-02-19 |
CN101427165B (zh) | 2010-06-02 |
JPWO2008072368A1 (ja) | 2010-03-25 |
EP2093595B1 (en) | 2013-03-13 |
EP2093595A1 (en) | 2009-08-26 |
US20090168172A1 (en) | 2009-07-02 |
US8077389B2 (en) | 2011-12-13 |
JP4928564B2 (ja) | 2012-05-09 |
ES2404064T3 (es) | 2013-05-23 |
CN101427165A (zh) | 2009-05-06 |
EP2093595A4 (en) | 2010-01-20 |
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