![]() Optoelectronic reader for line reading of images of chromatic originals
专利摘要:
FIELD: electronic reproduction technique. The purpose of the invention is to achieve a high intensity and uniform illumination of a color original. An optoelectronic reader for progressive reading of images of color originals contains a color original 1, a flat lens 2, a macroobject 3, a row of photodiodes 4, a light source 5, a condenser 6, a rotating wheel with filters 7, a collimator 8, a fiber-optic converter 9, input and output 10 and 11 surfaces, a cylindrical lens 12, color separation filters 13. The light flux from the light source enters the rotating wheel with filters, having several filters for (color) decomposition of light into ko colors, the fiber-optic cross-section transducer, the output cross-section of which 公开号:SU1743377A3 申请号:SU874202495 申请日:1987-04-30 公开日:1992-06-23 发明作者:Гебхардт Аксель 申请人:Др. -Инж. Рудольф Хелль Гмбх (Фирма); IPC主号:
专利说明:
The invention relates to an optoelectric-1 device for progressive scanning of color originals in the reproduction technique by a light source, the light of which through a filter wheel enters a fiber-optic transducer cross section. The purpose of the invention is to achieve a high intensity and uniformity of illumination of a color original, as well as reading opaque color originals. FIG. 1 and 2 shows a functional diagram of the device, options; in fig. 3 - the same section; in fig. 4 - the same, top view; in fig. 5 and 6 - the same options; in fig. 7 - scanning device, cross section; in fig. 8 and 9 - rotating wheel with filters; in fig. 10 and 11 show a modification of the device for illuminating a transparent material with a two-stage image; in fig. 12 and 13 is a variant of the ray path of the scanning device upon insertion of a cylindrical lens; in fig. 14 is a graph of spectral sensitivity curves for R, G, B. An optoelectronic reader for progressive reading of images of color originals contains a color original 1, a flat lens 2, a macro lens 3, an optoelectronic converter containing a series of photodiodes 4, a light source 5, a condenser 6, a rotating wheel with filters 7, a collimator 8, a fiber optic converter 9 with input 10 and output 11 surfaces; cylindrical lens 12, color separation filters 13. The device (Fig. 3) contains cylindrical lenses 14 and 15, fiber line 16-18. The device (Fig. 5) contains light source 5, condenser 6, rotating wheel with filters 7, cylindrical lens 12, color original 1. The device in FIG. 10 and 11 contains fiber line 18, a cylindrical lens 12, a translucent screen 19, a second cylindrical lens 20. FIG. 12 shows a variant of the device for inserting an additional Fresnel lens 21, comprising a beam of rays 22, a fiber line 18, a separate beam 23, a diffusing screen 24, a secondary beam 25. The light source 5 in the form of a halogen lamp, for example, 0.5 A, 12 V, 50 W, creates White light. Condenser 6 focuses the image of the helix on a rotating filter wheel with filters containing an interference filter, as well as a fitted mass filter to obtain primary colors (R, G, B). This image of the helix on the filter is particularly rational, since this achieves a high efficiency of the filter wheel. Light is collimated by a lens and fed to a round cross-section of a fiber-optic cross-section converter (line circumference). The outputs of the fibers formed to the cross section converter line are depicted with using a cylindrical lens (PMMA) on the illuminated original, a line of light appears in the form of a light strip, due to which cyclical occurs due to a rotating filter wheel with filters Illumination of the original primary colors. Possible opaque and transparent lighting (Fig. 10). In the invention, xenon lamps can be used as a light source, and instead of a filter wheel, an adjustable acoustic-optical filter. AT A scanner for a high resolution scanner uses one-dimensional lines of photodiodes. Linear lines of photodiodes provide up to 5,000 image elements in length, while two-dimensional photodiode complexes (ODS — Arrays are consistent with the television standard (for example, Fairchlld SSD 211, 488x3800 images). For the proposed device, the use of a fiber optic transducer of the cross section, since taking into account a point source of light (halogen lamp, xenon arc lamp), a light line can be obtained with a linear shape. The light of a point source of light can simply cyclically switch with the color filters, and thus, when scanning a color image, it is bypassed with only one line of photodiodes. The optical efficiency is significantly higher with progressive illumination than with illumination on a plane, the signal-to-noise ratio (the effect of light scattering) is improved compared to illumination on a plane, and the correction of lighting irregularities depending on the image location, such as marginal light attenuation, scanning vignetting lens, less expensive than a two-dimensional device. The lighting device (Fig. 7) may consist of a lamp unit with a light source, a condenser b, an infrared barrier filter, a rotating wheel 7 with filters, a collimator 8 that gives light to the input cross section of the transducer 9 of the cross section, whose input cross section is matched with diameter of the light beam. For reasons of optimal use of light, the lamp housing can be mirrored to the light source 5 in order to simultaneously illuminate two fiber optic transducers 9 of the cross section. Due to the condenser 6 with a diaphragm number of about one in between the intermediate image, the lamp coil is increased approximately three times on the rotating wheel with filters 7. The collimator 8 collimates the light beam so that the beam has a uniform density of light and easily fills the input of the cross section converter. The surface 11 of the input transducer cross-section varies in size, depending on the length of the scanned line (opaque / transparent). By choosing the focal length of the collimator 8 the beam diameter is matched with the diameter of the transducer cross section. Rotating wheel 7 with filters (Fig. 8 and 9) consists of three sectors at 120 ° minus the edges of the filter holders. The filter wheel sectors contain color separation filters 13 (red, green, blue), and additional mass filters, i.e. colored glasses that are common spectral absorption is consistent with those known on the original. FIG. 12 and 13 show another rational design of the device, consisting in the insertion of a field lens. With large field angles of view (in the space of the inventions) decrease the image brightness due to the vignetting of the scanning lens and the illumination. Using a field lens, i.e. Frenel's cylindrical lens 21 can compensate for this decrease in luminance at the edges of the image. The course of the rays makes it obvious by the example of a beam of 22 rays, which comes out of the fiber line 18, this principle of operation. A separate beam 29 from the beam 22 is scattered on the diffusing screen 24 into the secondary beam 25. This beam is focused by a cylindrical lens 12 on the original 1 and at the same time cylindrical lens 2 Fresnel deflected to the pupil of the scanning optical system. A separate beam 22 without lens 21 does not fall on the pupil of the scanning optical system, which does not occur dimming at the edge of the image. In addition, a wide band of the original is highlighted by a separate light guide, due to which overlap is obtained in the original, the averaging is also obtained the luminance of a large number of light guides, which leads to a more uniform display inside the scanned line. FIG. 14 shows the v (A) filter characteristics for obtaining spectral portions of red, green, blue from white light. At the same time, the characteristics of the filter were matched with the sensitivity characteristics of the row of photodiodes. For red, green, blue, dichroic filters are used during color scanning, to which filter filters are connected in parallel to correct the filter characteristics. colored glass. To correct the amplitudes of red, green, blue to the same height, if necessary, a neutral filter is additionally connected in parallel, for which conventional neutral glasses are used. When reproducing a color original in black and white, a single filter with a characteristic corresponding to the sensitivity of the eye is used instead of color filters. This characteristic is also called the V (I) -characteristics and is presented as a function. This allows for the correct transmission of tones in black and white reproduction. The advantage of an optoelectronic reading device is that it bypasses one line of photodiodes, and also that other optical nodes, other than the filter wheel, should not move. In addition, the device provides uniform illumination of the line at the edges of the lines with significant light output, t . high efficiency is provided. Both color reproduction and black and white are possible, as well as both opaque and transparent scanning of large originals. You can use the same optical unit for these different purposes during production. Instead of a macro lens, a GRIN is used — a fiber-optic system in combination with a row of photodiodes that has the length of the scanned string. Thanks to this device, an extremely compact design is possible. When using rows of photodiodes that already decompose the color, there may be no filter wheel. With these lines of photodiodes, several photodiodes are matched with each image element, which, due to the anticipation of the corresponding dichroic filters, provides the desired color signals.
权利要求:
Claims (9) [1] Claim 1. Optoelectronic reader for progressive reading of images of color originals, containing optoelectronic converter located on one optical axis, consisting of a row of photodiodes for receiving light transmitted or reflected by a color original, light source, color separation filters, fiber-optic converter cross section, located between the light source and the color original, the output surface of the cross section converter being ene in a color original, and fiber cross-section converter exit surface oriented in a linear optic device, characterized in that, in order to achieve high intensity and uniformity of illumination on the color original traveling path of the light flux from light source to the row of photodiodes; a condenser, a collimator, a cylindrical lens, a macro lens are introduced, and color separation filters are made in as a rotating wheel with filters, a condenser is located between the light source and filters for separating colors, a collimator between a rotating wheel with filters and the entrance surface of the cross section former, a cylindrical lens between the entrance surface of the cross section converter and a color original, a macro lens between the color original and 5 by an optoelectronic converter made as a series of photodiodes, a color original between a cylindrical lens and a macro lens, the cross section of the input surface of the transducer matching with the cross section of the beam of light coming out of the collimator, the cylindrical lens extending along the entire length of the output surface of the transducer of the cross section , but 5 color separation filters of the rotating wheel with filters are spectrally matched with photodiodes with white and transparent originals. [2] 2, An optoelectronic reading device for progressively reading images of color originals, containing an optoelectronic converter located on the same optical axis, consisting of a series of photodiodes for receiving the light transmitted by or transmitted by the color original, a light source, color separation filters, a fiber optic transducer located between the light source and the color 0, the output surface of the cross section converter is directed to the color original, and the fiber optic cross section converter in the output surface is oriented to a linear fiber device, characterized in that, in order to achieve high color and uniform illumination of the color original along the path light 0 from the light source to the photodiode row, a condenser, collimator, cylindrical lens, macro lens are inserted, the condenser and collimator being located between the light source and the output surface 5 fiber optic transducer cross section, a cylindrical lens - between the output surface of the fiber optic transducer cross section and a color original, macro lens and color separation filters - between a color original and a series of photodiodes of an optoelectronic converter, and a color original between a cylindrical lens and a macro lens, the cross section of the input surface of the fiber optic converter matched with the cross section of the light rays emanating from the collimator, the cylindrical lens is located throughout the entire length of the output surface fiber optic transducer cross section, color separation filters are located directly in front of a row of photodiodes an electronic converter and combined with them, and the color separation filters are spectrally matched with photodiodes with white and transparent originals. [3] 3. Reader according to paragraphs. 1 and 2, characterized in that the light source is in the form of a white point source of a halogen or xenon lamp. [4] 4. Device on PP. 1 and 2, characterized in that for a black-and-white reproduction of a color original, a filter with a characteristic v (A) is introduced, where A is the wavelength of transmitted light. [5] 5. Device on PP. 1 and 2, characterized by that, in order to read opaque color originals, two lighting devices were introduced, the optical axes of which are oriented at an angle of 45 ° to the reading line. [6] 6. A device according to claim 1, characterized in that the color separation filters of the rotating wheels with filters consist each of one dichroic filter, one or several colored glass plates and one neutral filter. [7] 7. The device according to paragraphs. 1 and 2, characterized in that the photodiode series of the optoelectric converter has a read line length. [8] 8. Device on PP. 1 and 2, characterized in that a strip-shaped diffusion plate and the next cylindrical lens are arranged between the cylindrical lens and the color original for reading transparent color originals. [9] 9. The device according to paragraphs. 1 and 2, characterized in that a Fresnel lens is located between the scattering plate and the second cylindrical lens. FIG. 2 zt ff-gff uppf Ј Matt 81 91 iieem FIG. b 7 in | / # w Fig.i Phie. 7 YU FIG. 9 at Fig.12 300 400 FIG. M
类似技术:
公开号 | 公开日 | 专利标题 SU1743377A3|1992-06-23|Optoelectronic reader for line reading of images of chromatic originals US4663657A|1987-05-05|Image pickup apparatus for endoscopes US4807026A|1989-02-21|Electronic image pickup device for endoscopes US5012346A|1991-04-30|Illumination system for a film scanner US4797711A|1989-01-10|Image scanning apparatus USRE34411E|1993-10-19|Electronic image pickup device for endoscopes US5414489A|1995-05-09|Light pipe spectral filter EP0448708A1|1991-10-02|A beam splitter for color imaging apparatus. US3916184A|1975-10-28|Optical scanner in modular form JPS59224970A|1984-12-17|Phototelegraphy equipment US4085419A|1978-04-18|Color television camera JPH07193685A|1995-07-28|Line lighting device and line reader CA1151455A|1983-08-09|Device for projecting colour picturesonto a screen and display system incorporatingsuch a device EP0099625B1|1986-12-30|Image transmission devices US4566766A|1986-01-28|Image transmission devices US1798963A|1931-03-31|Optical device for distant vision SU1116560A1|1984-09-30|Television device JPH05136942A|1993-06-01|Color correction structure for color picture reader SU1167570A1|1985-07-15|Two-channel projection device JPH02168767A|1990-06-28|Picture reader JPH05260256A|1993-10-08|Lamp unit for irradiation of color image JP2546319Y2|1997-08-27|Optical character reader JPS6253567A|1987-03-09|Picture input device JPS577675A|1982-01-14|Original lighting device JPS58115976A|1983-07-09|Picture discriminator
同族专利:
公开号 | 公开日 DE3614888A1|1987-11-05| CA1277605C|1990-12-11| DE3783804D1|1993-03-11| AT85176T|1993-02-15| CN1010271B|1990-10-31| US4821114A|1989-04-11| AU7226287A|1987-11-05| JPS62263761A|1987-11-16| AU591275B2|1989-11-30| EP0248204A3|1990-05-09| CN87103566A|1988-03-09| EP0248204A2|1987-12-09| EP0248204B1|1993-01-27|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题 GB1008337A|1963-04-10|1965-10-27|Muirhead & Co Ltd|Improvements in or relating to facsimile telegraph apparatus| CH494510A|1968-07-31|1970-07-31|Setalec S A|Method and apparatus for decomposing color images for television| US3717531A|1971-03-31|1973-02-20|American Optical Corp|Method and apparatus for making fused bundles of energy-conducting fibers| DE2141364C3|1971-08-18|1981-02-19|Sulzer Morat Gmbh, 7024 Filderstadt|Method and device for recognizing the color of an original| US3721828A|1971-10-29|1973-03-20|Us Army|Optical image scanner utilizing variable index of refraction fiber optics| JPS52123625A|1976-04-09|1977-10-18|Ricoh Co Ltd|Focusing optical system for electrophotographic copier| US4220978A|1977-07-08|1980-09-02|Burroughs Corporation|Electro-optical document reader| JPS5482644U|1977-11-22|1979-06-12| US4278995A|1979-08-20|1981-07-14|Eastman Kodak Company|Color line sensor for use in film scanning apparatus| DE2952209C2|1979-12-22|1984-03-15|Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel|Arrangement for point-by-point and line-by-line recording of image information| DD157286A1|1980-02-01|1982-10-27|Udo Brandt|ARRANGEMENT FOR COLOR IDENTIFICATION WHEN CHECKING GRAPHICAL TEMPLATES| DE3004717C2|1980-02-08|1986-03-27|Agfa-Gevaert Ag, 5090 Leverkusen|Device for the electronic scanning of objects to be recorded| JPS57143683A|1981-03-02|1982-09-04|Toshiba Corp|Drop-out color detecting device| DE3118458C2|1981-05-09|1984-11-22|Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel|Light receiving device| US4409477A|1981-06-22|1983-10-11|Sanders Associates, Inc.|Scanning optical system| JPS5830271A|1981-08-18|1983-02-22|Fuji Xerox Co Ltd|Multicolor lighting device for original| JPS5830272A|1981-08-18|1983-02-22|Fuji Xerox Co Ltd|Fixed platen type original multicolor reader| US4560235A|1982-09-22|1985-12-24|Honeywell Inc.|Fiber optic condenser for an optical imaging system| DE3266409D1|1982-10-09|1985-10-24|Hell Rudolf Dr Ing Gmbh|Electrically controlled scanning apparatus and method for the moire-free scanning of raster copies| DE3239492C2|1982-10-26|1986-06-12|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München|Scanning device for image processing equipment, in particular facsimile machines| DE3533590A1|1985-09-20|1987-04-02|Hell Rudolf Dr Ing Gmbh|SCANNING DEVICE FOR HALF-TONE TRANSPARENCIES|KR920005856B1|1988-04-25|1992-07-23|소니 가부시기가이샤|Color picture reading device| US5058982A|1989-06-21|1991-10-22|Orbot Systems Ltd.|Illumination system and inspection apparatus including same| US5003189A|1989-10-10|1991-03-26|Unisys Corp.|Document-imaging illumination with fibre-optic intensity-adjust| US5109469A|1990-11-01|1992-04-28|Itt Corporation|Phosphor screen for correcting luminous non-uniformity and method for making same| US5268977A|1992-07-06|1993-12-07|Miller Jack V|Fiber optic zoom-and-dim pin-spot luminaire| US5515182A|1992-08-31|1996-05-07|Howtek, Inc.|Rotary scanner| US5513291A|1993-10-08|1996-04-30|Origin Medsystems, Inc.|Light source modifications for plastic light fibre compatibility| US5619373A|1995-06-07|1997-04-08|Hasbro, Inc.|Optical system for a head mounted display| US5777694A|1995-06-13|1998-07-07|Texas Instruments Incorporated|Color wheel with plastic film filters| DE29614692U1|1996-04-30|1996-10-24|Balzers Prozess Systeme Vertri|Color wheel and imaging device with a color wheel| US5798849A|1996-11-05|1998-08-25|Mustek Systems Inc.|Multilevel light source device| US6069714A|1996-12-05|2000-05-30|Applied Science Fiction, Inc.|Method and apparatus for reducing noise in electronic film development| US6017688A|1997-01-30|2000-01-25|Applied Science Fiction, Inc.|System and method for latent film recovery in electronic film development| WO1999043149A1|1998-02-23|1999-08-26|Applied Science Fiction, Inc.|Progressive area scan in electronic film development| IL140248D0|1998-06-16|2002-02-10|Orbotech Ltd|Illuminator for inspecting substantially flat surfaces| US6594041B1|1998-11-20|2003-07-15|Applied Science Fiction, Inc.|Log time processing and stitching system| US6781620B1|1999-03-16|2004-08-24|Eastman Kodak Company|Mixed-element stitching and noise reduction system| US6288815B1|1999-03-31|2001-09-11|Philips Electronics North America Corporation|Light scanner with cylindrical lenses| WO2001001197A1|1999-06-29|2001-01-04|Applied Science Fiction, Inc.|Slot coating device for electronic film development| IL131284A|1999-08-05|2003-05-29|Orbotech Ltd|Illumination for inspecting surfaces of articles| DE60014956T2|1999-08-17|2006-02-09|Eastman Kodak Co.|Method and system for the use of calibration zones in electronic film development| US6614946B1|1999-10-08|2003-09-02|Eastman Kodak Company|System and method for correcting defects in digital images through selective fill-in from surrounding areas| AU1077101A|1999-10-08|2001-04-23|Applied Science Fiction, Inc.|Method and apparatus for differential illumination image-capturing and defect handling| WO2001045042A1|1999-12-17|2001-06-21|Applied Science Fiction, Inc.|Method and system for selective enhancement of image data| US20060182337A1|2000-06-28|2006-08-17|Ford Benjamin C|Method and apparatus for improving the quality of reconstructed information| US6707557B2|1999-12-30|2004-03-16|Eastman Kodak Company|Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities| JP2003519410A|1999-12-30|2003-06-17|アプライド、サイエンス、フィクシャン、インク|Improved system and method for developing digital film using visible light| US6554504B2|1999-12-30|2003-04-29|Applied Science Fiction, Inc.|Distributed digital film processing system and method| US6965692B1|1999-12-30|2005-11-15|Eastman Kodak Company|Method and apparatus for improving the quality of reconstructed information| AU2743701A|1999-12-30|2001-07-16|Applied Science Fiction, Inc.|System and method for digital film development using visible light| US20020051215A1|1999-12-30|2002-05-02|Thering Michael R.|Methods and apparatus for transporting and positioning film in a digital film processing system| US20010030685A1|1999-12-30|2001-10-18|Darbin Stephen P.|Method and apparatus for digital film processing using a scanning station having a single sensor| US6447178B2|1999-12-30|2002-09-10|Applied Science Fiction, Inc.|System, method, and apparatus for providing multiple extrusion widths| US6864973B2|1999-12-30|2005-03-08|Eastman Kodak Company|Method and apparatus to pre-scan and pre-treat film for improved digital film processing handling| US6888997B2|2000-12-05|2005-05-03|Eastman Kodak Company|Waveguide device and optical transfer system for directing light to an image plane| WO2001050197A1|1999-12-30|2001-07-12|Applied Science Fiction, Inc.|System and method for digital color dye film processing| US6813392B2|1999-12-30|2004-11-02|Eastman Kodak Company|Method and apparatus for aligning multiple scans of the same area of a medium using mathematical correlation| US6788335B2|1999-12-30|2004-09-07|Eastman Kodak Company|Pulsed illumination signal modulation control & adjustment method and system| US6475711B1|1999-12-31|2002-11-05|Applied Science Fiction, Inc.|Photographic element and digital film processing method using same| US6664034B2|1999-12-31|2003-12-16|Eastman Kodak Company|Digital film processing method| US6943920B2|2000-02-03|2005-09-13|Eastman Kodak Company|Method, system, and software for signal processing using pyramidal decomposition| AU3803901A|2000-02-03|2001-08-14|Applied Science Fiction|Method, system, and software for signal processing using sheep and shepard artifacts| WO2001057798A2|2000-02-03|2001-08-09|Applied Science Fiction|Match blur system and method| AU3669401A|2000-02-03|2001-12-17|Applied Science Fiction|Method and system for self-service film processing| US20010040701A1|2000-02-03|2001-11-15|Edgar Albert D.|Photographic film having time resolved sensitivity distinction| US6619863B2|2000-02-03|2003-09-16|Eastman Kodak Company|Method and system for capturing film images| EP1252549A2|2000-02-03|2002-10-30|Applied Science Fiction|Film processing solution cartridge and method for developing and digitizing film| US20020118402A1|2000-09-19|2002-08-29|Shaw Timothy C.|Film bridge for digital film scanning system| US7016080B2|2000-09-21|2006-03-21|Eastman Kodak Company|Method and system for improving scanned image detail| US20020146171A1|2000-10-01|2002-10-10|Applied Science Fiction, Inc.|Method, apparatus and system for black segment detection| AU2002240344A1|2001-02-09|2002-08-28|Eastman Kodak Company|Digital film processing solutions and method of digital film processing| DE10126510A1|2001-05-30|2002-12-19|Knut Schwedler|Radiative energy converter e.g. for conversion into electrical signals, uses continually generated matrix of filters| US6805501B2|2001-07-16|2004-10-19|Eastman Kodak Company|System and method for digital film development using visible light| US7263240B2|2002-01-14|2007-08-28|Eastman Kodak Company|Method, system, and software for improving signal quality using pyramidal decomposition| DE10323193A1|2003-05-22|2004-12-23|Océ Document Technologies GmbH|Device and method for multispectral scanning of a color image template| KR20060119707A|2004-02-13|2006-11-24|소니 가부시끼 가이샤|Image processing device, image processing method, and program| US7530710B2|2006-05-24|2009-05-12|Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH|Color-tunable illumination system for imaging illumination| US7695164B2|2006-05-24|2010-04-13|Osram Gesellschaft Mit Beschraenkter Haftung|Illumination system for imaging illumination with a high level of homogeneity| DE102007022606B4|2006-05-24|2016-09-22|Osram Gmbh|Illumination system for imaging illumination with high homogeneity| DE102007022605B4|2006-05-24|2018-06-21|Osram Gmbh|Color-adjustable illumination system for imaging illumination| DE102007015063B4|2007-03-29|2019-10-17|Carl Zeiss Microscopy Gmbh|Optical arrangement for generating a light sheet| USRE45575E1|2007-03-29|2015-06-23|Carl Zeiss Microscopy Gmbh|Optical arrangement for the production of a light-sheet| DE102007063274B4|2007-12-20|2022-03-10|Albert-Ludwigs-Universität Freiburg|microscope| CN102066835B|2008-04-30|2014-10-22|卡尔斯特里姆保健公司|Variable condenser for delivery of illumination| CN103511924B|2013-09-12|2016-03-30|北京理工大学|A kind of LED even light source for linear CCD imaging|
法律状态:
优先权:
[返回顶部]
申请号 | 申请日 | 专利标题 DE19863614888|DE3614888A1|1986-05-02|1986-05-02|OPTICAL ARRANGEMENT FOR LINEAR LIGHTING OF SCAN TEMPLATES| 相关专利
Sulfonates, polymers, resist compositions and patterning process
Washing machine
Washing machine
Device for fixture finishing and tension adjusting of membrane
Structure for Equipping Band in a Plane Cathode Ray Tube
Process for preparation of 7 alpha-carboxyl 9, 11-epoxy steroids and intermediates useful therein an
国家/地区
|