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121. 发明专利

JPH05249449A 失效
公开(公告)号：JPH05249449A
公开(公告)日：1993-09-28
申请号：JP4988992
申请日：1992-03-06
申请人： SEIKO EPSON CORP
发明人： AMAKO ATSUSHI , SONEHARA TOMIO
IPC分类号： G02F1/1335
摘要： PURPOSE:To make the toughness and defect of picture elements in a display body inconspicuous with a simple means by disposing a member forming a phase type grating at the back of a display body having picture element groups. CONSTITUTION:A lighting source 101 irradiates the display body 102. The light transmitting the display body 102 is reflected by a light path bending mirror 103 and comes into an observer 107 through a lens 105. The phase type grating 104 is formed on the surface of the light path bending mirror 103. By the light dividing action of the phase type grating 104, plural duplicated images corresponding to the respective picture elements are obtained. The distance Z between the display body 102 and the grating 104 and the pattern and the sectional shape of the grating 104 are decided so that the duplicated images are just between the picture elements. The distance Z is selected so that the contrast of Moire fringes generated between the picture periodic structure of the display body 102 and the picture periodic structure of the grating 104 is inconspicuous.

122. 发明专利

JPH05127139A OPTICAL DEVICE 失效
公开(公告)号：JPH05127139A
公开(公告)日：1993-05-25
申请号：JP24147291
申请日：1991-09-20
申请人： SEIKO EPSON CORP
发明人： AMAKO ATSUSHI , SONEHARA TOMIO , MIURA HIROTSUNA
IPC分类号： G02B5/32 , G02F1/01 , G02F1/13
摘要： PURPOSE:To control the phase and phase of light at the same time by providing a spatial optical modulating element for amplitude modulation and an optical spatial modulating element for phase modulation, and a means which spatially connects those two elements in series. CONSTITUTION:A spatial light modulating element(SLM) consists of the SLM for amplitude modulation 101 (amplitude SLM) and the SLM 102 for phase modulation (phase SLM) almost in one body. The amplitude SLM 101 and phase SLM 102 have corresponding picture elements 103 and are spatially connected in series. The corresponding picture elements need to be put one over the other to optical length shorter than the coherence length of a light source in use while depending upon the coherence length so that modulation points of the amplitude and modulation almost match each other. For the purpose, at least one SLM is preferably an electric address type SLM in thin structure. Consequently, real-time performance is utilized to record a computer hologram, which is applicable to a three-dimensional moving picture display.

123. 发明专利

JPH0519224A OPTICAL DEVICE 失效
公开(公告)号：JPH0519224A
公开(公告)日：1993-01-29
申请号：JP17111991
申请日：1991-07-11
申请人： SEIKO EPSON CORP
发明人： AMAKO ATSUSHI , MIURA HIROTSUNA , SONEHARA TOMIO
IPC分类号： G01B11/24 , G01B9/021 , G02F1/13 , G02F1/137
摘要： PURPOSE:To obtain the optical device which can measure the change of an object shape with a high accuracy and at a high speed by using a liquid crystal element as a recording medium of interference fringes. CONSTITUTION:Interference fringes having a feature of an object shape is formed on the image pickup screen of a camera (1) 106 by a laser light source 100 and a Michelson type interferometer. In this case, the tilt of a mirror 104 is adjusted so that a space frequency of a carrier of an interference fringe does not exceed a half of a spatial resolution of a liquid crystal element 108. An output of the camera (1) 106 is A/D-converted by a circuit 107 and inputted to the liquid crystal element 108. According to this constitution, interference fringes obtained as an intensity distribution of alight can be converted to interference fringes consisting of a phase distribution. When a reference wave and an object wave are made incident on the interference fringes of a phase distribution type displayed on the liquid crystal element 108, an interference fringe is formed between the object wave for showing an object surface shape before deformation reproduced by the reference wave, and the object wave in its subsequent state. The interference fringes is inputted to a camera (2) 111 and displayed on a monitor 112.

124. 发明专利

JPH04316017A LIQUID CRYSTAL LIGHT VALVE 失效
公开(公告)号：JPH04316017A
公开(公告)日：1992-11-06
申请号：JP8374891
申请日：1991-04-16
申请人： SEIKO EPSON CORP
发明人： WATANABE YOSHIO , SONEHARA TOMIO
IPC分类号： G02F1/1333 , G02F1/1337 , G02F1/135
摘要： PURPOSE:To simplify the element constitution of the optical write type liquid crystal light valve and to realize a high-definition display. CONSTITUTION:The light valve consists basically of a display body layer and a photoconductor layer 8 sandwiched between two opposite substrates 1. The display body layer is formed of a layer wherein liquid crystal 5 and macromolecules 4 are mutually dispersed and oriented in one direction by an orienting film 3. The display body layer and photoconductor layer can be installed closely to each other, so the diffusion of carriers can be minimized and the high-definition display can be made. Although a conventional liquid crystal light valve needs to have two optical systems for write light and read light, a display device whose write light functions as a read light source can be constituted.

125. 发明专利

JPH04267283A HOLOGRAM RECORDER 失效
公开(公告)号：JPH04267283A
公开(公告)日：1992-09-22
申请号：JP2843291
申请日：1991-02-22
申请人： SEIKO EPSON CORP
发明人： AMAKO ATSUSHI , MIURA HIROTSUNA , SONEHARA TOMIO
IPC分类号： G02F1/13 , G03H1/02 , G03H1/04
摘要： PURPOSE:To remarkably improve the recording density of information in a hologram recorder. CONSTITUTION:In a hologram recorder, a phase modulation type liquid-crystal space light modulator 104 is set up in a reference wave optical path 102, and an amplitude modulation type liquid-crystal space light modulator 103 is set up in an object wave optical path 101. The phase modulation type liquid-crystal space light modulator 104 is used for generating a specified phase distribution and encoding a reference wave surface. On the other hand, the amplitude modulation type liquid-crystal space light modulator 103 is used for displaying an image to be recorded. Using the reference wave surface encoded at each image, plural images are superposed on an electro-optic material 105 and recorded. Since the encoded reference wave surfaces are orthogonalized with one another, a desired image alone is reproducible by selecting the reference wave surfaces. The maximum number of images recordable in pile is equal to a picture element number of the liquid crystal space light modulator being used, thus an amount of more than 10 is easily achieved.

126. 发明专利

JPH04172305A POLARIZER ELEMENT 失效
公开(公告)号：JPH04172305A
公开(公告)日：1992-06-19
申请号：JP29918190
申请日：1990-11-05
申请人： SEIKO EPSON CORP
发明人： UCHIYAMA SHOICHI , ITO YOSHITAKA , JINJIEIUU , SONEHARA TOMIO
IPC分类号： G02B5/30 , G02F1/13
摘要： PURPOSE:To convert the incident light having the random polarized light component to the outgoing light having only the polarized light component in one direction free from loss by preparing the cyclic structure by using an isotropic material and a birefringent material so that the condition that the pitch of the repetitive unit is smaller than the wave length of the light wave is satisfied. CONSTITUTION:A polarizer element is constituted of a cyclic structure consisting of the mutual repetition of isotropic layers 101 and birefringence material layers 102. When the thickness of one material 101 is t1, the thickness of the other is t2, and the wave length of incident light is lambda, the following relationship is satisfied; t1 + t2 lambda. The other material possesses the birefringence performance. Further, the optical axis of the material 102 having birefringence performance is preferably oriented in 45 deg. for the direction of repetition of the cyclic structures. Accordingly, the compact polarizer element which is essentially free from light absorption can be obtained at a low cost.

127. 发明专利

JPH0419557B2 失效
公开(公告)号：JPH0419557B2
公开(公告)日：1992-03-30
申请号：JP5434382
申请日：1982-04-01
申请人： SEIKO EPSON CORP
发明人： SONEHARA TOMIO
IPC分类号： G09G3/18 , G02F1/133 , G02F1/136 , G02F1/1365 , G09F9/30 , G09F9/35 , H01L49/02

128. 发明专利

JPH03241858A MANUFACTURE OF SEMICONDUCTOR SUBSTRATE 失效
公开(公告)号：JPH03241858A
公开(公告)日：1991-10-29
申请号：JP3874590
申请日：1990-02-20
申请人： SEIKO EPSON CORP
发明人： WATANABE YOSHIO , SONEHARA TOMIO
IPC分类号： H01L21/768 , H01L23/522
摘要： PURPOSE:Not only to flatten the irregularities formed on the surface of a semiconductor substrate but also to make all the surface of it uniformly smooth through a simple manufacturing process by a method wherein a resin layer is formed on the semiconductor substrate, which is pre-burned to be semi-hardened, and a squeegee to which a prescribed pressure is applied is made to sweep over the burned resin layer. CONSTITUTION:A method, where a resin layer is formed on a semiconductor substrate 102 to flatten the irregularities and the waves formed on the surface of the substrate 102, is composed of a first process in which a resin layer 104 is formed on the semiconductor substrate 102, a second process in which the resin layer 104 is pre-burned to be semi-hardened, and a third process in which a squeegee to which a prescribed pressure is applied is made to run over the burned resin layer 104 coming in close contact with it to flatten the surface of the resin layer 104. For instance, a polyimide 104 is applied as uniformly as possible onto the semiconductor substrate 102 provided with steps 4mum in height through a spin coater. Then, the substrate 102 is burned at a temperature of 100-130 deg.C for 15 minutes or so so as to prevent the polyimide 104 from being fully hardened. In succession, a squeegee to which a prescribed pressure is applied is made to sweep over the polyimide layer 104 in contact with it.

129. 发明专利

JPH0364875B2 失效
公开(公告)号：JPH0364875B2
公开(公告)日：1991-10-08
申请号：JP12111281
申请日：1981-07-31
申请人： SEIKO EPSON CORP
发明人： SONEHARA TOMIO , MURATA MASAMI , OOTA SUNAO
IPC分类号： G02F1/133 , G09G3/36

130. 发明专利

JPH02292971A WRITING METHOD FOR IMAGE FORMING DEVICE 失效
公开(公告)号：JPH02292971A
公开(公告)日：1990-12-04
申请号：JP11460789
申请日：1989-05-08
申请人： SEIKO EPSON CORP
发明人： SONEHARA TOMIO , ITO CHIHARU
IPC分类号： G02F1/13 , G02F1/135 , G09F9/30 , H04N5/74
摘要： PURPOSE:To attain the even display of images and at the same time to simplify a driving circuit by halving the driving frequency of an electric field application means in comparison with the scan frequency of a light beam. CONSTITUTION:A modulated light beam 109 emitted from a light beam generation/modulation means 101 undergoes the raster scan via a scan means 102. At the same time, the laser light is turned into a minute beam by a crystal optical system and irradiates a liquid crystal light valve 103. An image formed on the valve 103 is outputted as the picture information light 110 via the read light 111 and a read optical system 104. The frequency which scans the light beam in the scanning direction is well-definedly decided by the scan frequency of the image to be displayed. Then the light beam scanning frequency is set at a level double as high as the frequency of an AC electric field which drives the valve 103. Furthermore the polarity of the electric field is inverted at the horizontal flyback time. The light beam modulated by a laser modulating signal irradiates the valve 103 to form an image. In such a way, the variance of display is never produced on a screen and at the same time the generation of a driving circuit is easily executed.

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