Near infra red cut filter, and device comprising the same

A cut-off filter and near-infrared technology, which is applied in the direction of photographic filters, instruments, filters, etc., can solve the problem of not being able to obtain sufficient viewing angle values, and achieve the effect of small incidence angle dependence and wide viewing angle

Active Publication Date: 2014-07-02
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The near-infrared cut filter described in Patent Document 2 is excellent in near-infrared cut performance, moisture absorption resistance, and impact resistance, but cannot obtain a sufficient viewing angle value.

Method used

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Examples

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Embodiment

[0259] Hereinafter, although an Example demonstrates this invention, this invention is not limited at all by these Examples. In addition, "part" and "%" mean "part by weight" and "% by weight" unless otherwise indicated.

[0260] First, the measurement method of each physical property value and the evaluation method of a physical property are demonstrated.

[0261] (1) Molecular weight:

[0262] Using a Gel Permeation Chromatography (GPC) device (Model 150C) manufactured by WATERS Corporation equipped with an H-type column manufactured by TOSOH, under the conditions of o-dichlorobenzene solvent and 120°C, the weight in terms of standard polystyrene was measured. Average molecular weight (Mw) and number average molecular weight (Mn).

[0263] (2) Glass transition temperature (Tg):

[0264] Using a differential scanning calorimeter (DSC6200) manufactured by Seiko Instruments, the measurement was performed at a rate of temperature increase: 20° C. per minute, under a nitrogen ...

Synthetic example 1

[0273] The 8-methyl-8-methoxycarbonyltetracyclo[4.4.0.1 shown in the following formula (2) 2，5 .1 7，10 ] 100 parts of dode-3-ene (hereinafter also referred to as "DNM"), 18 parts of 1-hexene (molecular weight modifier), and 300 parts of toluene (solvent for ring-opening polymerization reaction) were charged to the nitrogen-substituted reaction In a container, the solution was heated to 80°C. Next, 0.2 parts of a toluene solution (0.6 mol / L) of triethylaluminum as a polymerization catalyst and 0.9 parts of a toluene solution (concentration 0.025 mol / L) of methanol-modified tungsten hexachloride were added to the solution in the reaction vessel. The ring-opening polymerization reaction was performed by heating and stirring the solution at 80° C. for 3 hours to obtain a ring-opening polymer solution. The polymerization conversion rate of this polymerization reaction was 97%.

[0274]

[0275] 1000 parts of the ring-opening polymer solution obtained in this way are packed in...

Synthetic example 2

[0278] Sufficiently carry out drying, and in the 1L stainless steel reaction vessel that is replaced with nitrogen, the water content of 6ppm dehydrated cyclohexane 420.4g, p-xylene 180.2g, 5-trimethoxysilyl-bicyclo[2.2. 1] 48.75 mmol (10.43 g) of hept-2-ene, 1425 mmol (134.1 g) of bicyclo[2.2.1] hept-2-ene, and charged with gaseous ethylene so that the internal pressure of the reactor reached 0.1 MPa.

[0279] The reactor was heated to 75°C, and 0.003 milligram atoms of 2-ethylhexanoic acid palladium (as Pd atom) and 0.0015 mmol of tricyclohexylphosphine were reacted in 10 ml of toluene at 25° C. for 1 hour as a catalyst component to obtain a solution. The entire amount of the obtained solution and 0.00315 mmol of triphenylcarbenium pentafluorophenylborate were added in this order to start polymerization.

[0280] 90 minutes after the start of polymerization, 11.25 mmol (2.41 g) of 5-trimethoxysilyl-bicyclo [2.2.1] hept-2-ene was added, and then 7.5 mmol (1.61 g), 3.75 mmol (...

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Abstract

The present invention relates to a near-infrared cut filter and a device using the near-infrared cut filter. The object is to obtain a near-infrared cut filter having a wide viewing angle, excellent near-infrared cut ability, low hygroscopicity, and no foreign matter or warp. The near-infrared cut filter is characterized in that the transmittance satisfies the following (A) to (D): (A) in the range of wavelength 430-580nm, the average value of the transmittance is 75% or more; (B) at the wavelength In 800-1000nm, the average transmittance is 20% or less; (C) the longest wavelength at which the transmittance is 70% in the wavelength region below 800nm, and the longest wavelength at which the transmittance is 30% in the wavelength region above 580nm The absolute value of the difference in the shortest wavelength is less than 75nm; (D) In ​​the range of wavelength 560-800nm, the wavelength value at which the transmittance is 50% when measured from the vertical direction, and measured from an angle of 30° relative to the vertical direction The absolute value of the difference of the wavelength values ​​at which the transmittance is 50% is less than 15 nm.

Description

technical field [0001] The present invention relates to a near-infrared cut filter. More specifically, the present invention relates to a near-infrared cut filter having a sufficient viewing angle and particularly suitably used as a visibility correction filter for solid-state imaging devices such as CCDs and CMOSs. Background technique [0002] In recent years, televisions equipped with plasma display panels (PDPs) have been commercialized and widely used in ordinary households. This PDP is known as a display that operates by plasma discharge, and generates near-infrared rays (wavelength: 800 to 1000 nm) during plasma discharge. [0003] On the other hand, in the home, near-infrared rays are often used in the remote controls of home appliances such as TVs, stereos, and air conditioners, and in the information exchange of personal computers. It is often pointed out that the near-infrared rays generated by PDPs are the cause of misoperation of these devices. The possibility...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/20
CPCB32B7/02G02B5/22G02B5/26G03B11/00
Inventor 浅野贵之坪内孝史
Owner JSR CORPORATIOON
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