Abstract:
PURPOSE:To enable the use both for measuring general samples and light source characteristic with a simple switch operation by retaining a light diffuser on a holder the same in the construction as a light source holder to form an exchange unit for measuring a spectroscopic radiation characteristic of any light source so as to be exchangeable for the light source holder unit. CONSTITUTION:A light diffuser holder unit is mounted in place of a light holder unit in such a manner that the emission port Eo of an integrating sphere I is positioned as the luminous section of a tungsten lamp W when the light source holder unit is place there. Therefore, an emitted light emitted from the integrating sphere I enters a spectroscope when the mirror M is at the position as illustrated. A light source Q to be measured is set above the integrating sphere I and light of the light source to be measured is focused at the incident port Ei at the apex to enter the integrating sphere I. Under such a condition, as the mirror M is retreated in the direction of the arrow, light of a heavy hydrogen lamp D2 enters the spectroscope. Thus, switching is done over to the ultraviolet range measuring mode for the general sample whether or not the light diffuser holder unit is mounted.
Abstract:
PURPOSE:To enable accurate measurement of both mirror reflection and transmission light without restriction of the sample by completely averaging and eliminating effect of uneven sensitivity in the photo detecting surface of a photo detecting element employing a photometry through a integrating sphere. CONSTITUTION:The measurement of a mirror reflectance is done as follows: A mirror sample is set at the position B while a standard white plate at the position D. Mirrors M1 and M2 are positioned as illustrated, a monocolor light emitted from spectroscope 1 enters an integrating sphere I via the optical path of the solid line in the drawing passing through mirrors M1, M2, M3 and M4 and measured with a photo detector 2. The measured value thus obtained corresponds to 100% of the reflectance. Then, the mirrors M1 and M2 are moved to the dotted lines M1' and M2' respectively. At this point, the incident light of the spectroscope 1 enters the integrating sphere I via M1', M2', M3 and M4 and the optical path indicated by the dotted line and measured with a light detection circuit 2. This also enables the measurement of parallel transmission light, all transmission light combining parallel light and diffusion transmission light, diffusion reflection excluding mirror reflection and relative reflection by replacing the mirror 2 with a reference reflection sample and a measurement sample.
Abstract:
PROBLEM TO BE SOLVED: To prevent decline of a reflectance or a transmittance in an optical system, and to prevent decline of analysis sensitivity, caused by adhesion of various substances in exhaust gas in a semiconductor manufacturing process onto a reflecting mirror or a window in a cell of a moisture meter. SOLUTION: This absorption spectrometric apparatus for the semiconductor manufacturing process includes: a channel switching mechanism 50 connected to an exhaust channel of a processing chamber 39 in the semiconductor manufacturing process; and an absorption spectrometric apparatus 51 for multiple reflection type moisture concentration measurement for detecting an absorbance change caused by gas by multiple reflection in the cell of laser light from a laser light source, and measuring the moisture concentration in process gas. The channel switching mechanism 50 switches an exhausting channel after passing the analyzer 51 to/from an exhausting bypass channel without passing the analyzer 51. In this case, a particle measurement result acquired by measuring particles in the process gas can be used as a determination reference for switching the channel. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To simply correct the distance between mirrors so as to adjust the error of the radius of curvature of the mirror. SOLUTION: The mirror is preliminarily subjected to machining so as to become slightly large in its radius of curvature and, after the surface of the mirror is subjected to polishing processing, three-dimensional surface measurement is performed to calculate real mirror curvature. Next, two kinds of gaskets, that is, a gasket 16 for vacuum sealing and a gasket 17 for adjusting the distance between the mirrors are used between a selfbody 13 and flange mirrors 1 and 3 corresponding to the real mirror curvature to adjust the distance between the mirrors 1a and 3a. A non-deformable hard SUS plate is used as the gasket 17. The gasket 16 is formed using a soft material into which a knife edge 18 bites. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To reduce the influence on a measurement result due to waterdrops formed from a condensed water vapor and attached to a surface of an optical element facing a gas duct, after driving over a long time. SOLUTION: A photocatalyst TiO 2 layer 23 is applied to a surface, exposed to a space which is connected to the gas duct of a collimating lens 8, a reflection plate 14 and a reflecting mirror 10. Light sources 24a, 24b, 26, 28a, 28b are provided in the vicinity of the collimating lens 8, the reflecting plate 14 and the reflecting mirror 10 and turned to the surfaces of these, so as to irradiate an ultraviolet light. Water vapor, attached to the surfaces on the gas duct side of the collimating lens 8, the reflecting plate 14 and the reflecting mirror 10, will not turn into waterdrops, but will turn into a thin film by the action of the photocatalyst layer 23. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus for producing electrolytic water which generates an alarm signal to a user and prohibits the use of the electrolytic water when effective chlorine concentration falls than a predetermined value. SOLUTION: When the effective chlorine concentration measured by a data processing unit 38 of a measuring part 30a becomes under a fixed level, a control part 40 shuts off the switches 14a and 14b of a DC voltage supply 14 for an electrolysis vessel 11, closes the valves 23 and 24 of the intakes of an acidic water tank 86a and an alkaline water tank 86b provided outside, and then the user cannot use the electrolytic water. A blinking on the effective chlorine concentration at that time is displayed on the concentration display 39a of an output part 39 so that the user realizes the state, and a buzzer 39b sounds. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an absorbance measuring device capable of proper data processing even if there is no operator capable of determining abnormal data attributable to a bubble or the like produced by accident. SOLUTION: Data a1, a2,..., a15 for the past one minute is obtained by measuring absorbance of a sample liquid at an interval of 15 seconds. Abnormal data in this one minute are a5 due to an air bubble or the like and a10 due to a foreign substance or the like. In the case of a large air bubble, light is easily transmitted and in the case of a small air bubble, light is inflected, so that it may be decreased by sensitivity irregularity or the like of a light receiving surface of a detector. When there is a foreign substance, light is hard to transmit, so that the absorbance is lowered. This is a very rare phenomenon, and in date processing, the output is displayed by including the measurement data a15 up to the present time, by removing the maximum value a5 and the minimum value a10 up to a past certain time and by calculating the average value of the residual data. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To monitor a hypochlorous acid concn. in the produced strongly acidic water without using a color reagent and also to increase its measuring accuracy. SOLUTION: The strongly acidic water and the strongly alkaline water produced at an electrolytic cell 11 are conducted respectively to each individual liq. tank 62 and 63 of an air open type first liq. tank 61, then each liq. is sent to an air open type second liq. tank 67 by suction tubes 64 and 65 and shear pumps 73 and 74, and the liq. is forcively agitated by a stirrer 71 to sufficiently mix both liquids, and the mixture is sent to a flow cell 31 by a suction tube 68 and a shear pump 75. The flow cell 31 is irradiated with a light from a light source 32, and transmitted light is bisected by a beam slitter 33, and one side is conducted to a photocell 36 via an optical filter 34 transmitting near 292 nm wave length and the other side is conducted to a photocell 37 via an optical filter 35 transmitting >=400 nm wave length respectively, and the hypochlorous acid concn. is obtained from their detected output.
Abstract:
PROBLEM TO BE SOLVED: To produce a strong acidic water always containing a specified concentration of hypochlorous acid in spite of switching polarity in order to protect the electrode. SOLUTION: The concentration of hypochlorous acid in a strong acidic water is measured with a concentration sensor 24, and the pattern of deviations of concentration changing in a saw teeth state in accordance with switching to the polarities of anode 22 and cathode 23 in an electrolytic bath 21, is inputted in a control device 31, and the control device 31 calculates a control pattern inversely corresponding to it, and the electrolytic current flowing to the electrodes 22, 23 and the voltage are controlled with the control pattern, or the feed quantity of raw water or a chloride solution 16 is controlled with a flow rate control valve 13 and a metering pump 17.
Abstract:
PROBLEM TO BE SOLVED: To improve usability in actual usage. SOLUTION: Strong acid water preliminarily stored in a separate container 51 is lifted by a pump 52 to be forcedly supplied into a supply port reaching a pressure reducing valve 11 instead of raw water. At this time, a maintenance switch 32 is pushed, so a control device 31 sets a solenoid switching valve 12 in an open condition, an electrolytic voltage supply power source to an electrolysis vessel 21 in an off condition, and a quantitative pump 16 in an off condition. Cleaning liquid flowing from the electrolysis vessel 21 through guide tubes 25, 26 is returned to the separate container 51 to form a circulation loop. A sort of agitation action is provided by force of forcedly supplied strong acid water, thereby a flow passage line including the electrolysis vessel 21 can be efficiently cleaned.