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1. 发明申请

WO9843225A3 A POLARIZED-LIGHT CONVERTING OPTICAL SYSTEM, A POLARIZED-LIGHT CONVERTING ELEMENTAL DEVICE, A POLARIZED-LIGHT CONVERTING ELEMENTAL DEVICE ARRAY AND A PROJECTION-TYPE DISPLAY DEVICE USING ANY ONE OF THOSE COMPONENTS 审中-公开
标题翻译：偏振光转换光学系统，偏光转换元件，偏光转换元件阵列和使用任何一个组件的投影型显示器件
公开(公告)号：WO9843225A3
公开(公告)日：1999-02-25
申请号：PCT/JP9801136
申请日：1998-03-18
申请人： SHARP KK
发明人： SAKAI YOSHIHARU , INOKO KAZUHIRO
IPC分类号： G02B5/30 , G09F
CPC分类号： G02B5/3016
摘要： A polarized-light converting elemental device comprises a mirror glass portion consisting of an array of glass mirror blocks (7) each having a first reflecting optical element (8) and a second reflecting optical element (9) and a cholesteric-liquid-crystal glass portion (1) including a cholesteric liquid crystal layer (3) for reflecting either clockwise circularly polarized component or anticlockwise circularly polarized component and transmitting the other. The device produces outgoing circularly polarized light beams having the same rotation direction and propagating in two different directions. A projection-type display device is also described.
摘要翻译：提供一种可以产生具有最小化光损失的精确单向和圆偏振光并使用所述单向偏振光转换元件的投射型显示装置的偏振光转换元件装置。偏振光转换元件包括由玻璃镜阵列组成的镜玻璃部分，每个镜玻璃块具有第一反射光学元件和第二反射光学元件，胆甾型液晶玻璃部分包括用于反射的胆甾型液晶层顺时针圆偏振分量或逆时针圆偏振分量，并传输另一个。通过第一反射光学元件将来自左侧的自然光分成两个方向。从胆甾型液晶反射的光被第二反射光学元件反射，以改变其旋转方向，然后透过胆甾型液晶。元件的构造可以获得具有相同旋转方向的出射光束并且在两个离开的方向上传播。还提供了使用单向偏振光产生元件的投影型显示装置（未示出）。

2. 发明专利

AU6418398A A polarized-light converting optical system, a polarized-light converting elemental device, polarized-light converting elemental device array and projection-type display device using any one of those components 未知
公开(公告)号：AU6418398A
公开(公告)日：1998-10-20
申请号：AU6418398
申请日：1998-03-18
申请人： SHARP KK
发明人： SAKAI YOSHIHARU , INOKO KAZUHIRO
IPC分类号： G02B5/30 , G09F13/00
摘要： A polarized-light converting elemental device which can produce an accurately unidirectionally and circularly polarized light with a minimized loss of light and a projection-type display device using said unidirectionally-polarized-light converting elemental device are provided. A polarized-light converting elemental device comprises a mirror glass portion consisting of an array of mirror glass blocks each having a first reflecting optical element and a second reflecting optical element and a cholesteric-liquid-crystal glass portion including a cholesteric liquid crystal layer for reflecting either clockwise circularly polarized component or anticlockwise circularly polarized component and transmitting the other. Natural light from the left side is split into two directions by the first reflecting optical element. Light reflected from the cholesteric liquid crystal is reflected by the second reflecting optical element to alter its rotation direction and then transmitted through the cholesteric liquid crystal. The construction of the element can obtain outgoing light beams having the same rotation direction and propagate in two departing directions. A projection-type display device using the unidirectionally polarized light producing element is also provided (not shown).

3. 发明专利

MY120730A A POLARIZED- LIGHT CONVERTING OPTICAL SYSTEM, A POLARIZED- LIGHT CONVERTING ELEMENTAL DEVICE, A POLARIZED- LIGHT CONVERTING ELEMENTAL DEVICE ARRAY AND A PROJECTION- TYPE DISPLAY DEVICE USING ANY ONE OF THOSE COMPONENTS 未知
公开(公告)号：MY120730A
公开(公告)日：2005-11-30
申请号：MYPI9801278
申请日：1998-03-24
申请人： SHARP KK
发明人： INOKO KAZUHIRO , SAKAI YOSHIHARU
IPC分类号： G02F1/03 , G02B5/30
摘要： A POLARIZED-LIGHT CONVERTING ELEMENTAL DEVICE WHICH CAN PRODUCE AN ACCURATELY UNIDIRECTIONALLY AND CIRCULARLY POLARIZED LIGHT WITH A MINIMIZED LOSS OF LIGHT AND A PROJECTION-TYPE DISPLAY DEVICE USING SAID UNIDIRECTIONALLY-POLARIZED-LIGHT CONVERTING ELEMENTAL DEVICE ARE PROVIDED. A POLARIZED LIGHT CONVERTING ELEMENTAL DEVICE COMPRISES A MIRROR GLASS PORTION CONSISTING OF AN ARRAY OF MIRROR GLASS BLOCKS (7) EACH HAVING A FIRST REFLECTING OPTICAL ELEMENT (8) AND A SECOND REFLECTING OPTICAL ELEMENT (9) AND A CHOLESTERIC-LIQUID-CRYSTAL GLASS PORTION (1) INCLUDING A CHOLESTERIC LIQUID CRYSTAL LAYER (3) FOR REFLECTING EITHER CLOCKWISE CIRCULARLY POLARIZED COMPONENT OR ANTICLOCKWISE CIRCULARLY POLARIZED COMPONENT AND TRANSMITTING THE OTHER. NATURAL LIGHT FROM THE LEFT SIDE IS SPLIT INTO TWO DIRECTIONS BY THE FIRST REFLECTING OPTICAL ELEMENT (8). LIGHT REFLECTED FROM THE CHOLESTERIC LIQUID CRYSTAL (3) IS REFLECTED BY THE SECOND REFLECTING OPTICAL ELEMENT (9) TO ALTER ITS ROTATION DIRECTION AND THEN TRANSMITTED THROUGH THE CHOLESTERIC LIQUID CRYSTAL. THE CONSTRUCTION OF THE ELEMENT CAN OBTAIN OUTGOING LIGHT BEAMS HAVING THE SAME ROTATION DIRECTION AND PROPAGATE IN TWO DEPARTING DIRECTIONS. A PROJECTION-TYPE DISPLAY DEVICE USING THE UNIDIRECTIONALLY POLARIZED LIGHT PRODUCING ELEMENT IS ALSO PROVIDED (NOT SHOWN).

4. 发明专利

JPH10186508A PROJECTION DISPLAY DEVICE 失效
公开(公告)号：JPH10186508A
公开(公告)日：1998-07-14
申请号：JP34343596
申请日：1996-12-24
申请人： SHARP KK
发明人： SAKAI YOSHIHARU
IPC分类号： G03B33/12 , G03B21/00
摘要： PROBLEM TO BE SOLVED: To provide a projection display device dissolving a problem of heat generation due to light absorption in incident side and emission side polarizing plates. SOLUTION: Emission light from a light source 1 is reflected in a red color component in the either rotational direction of left/right by a cholesteric liquid crystal 2, and is converted to linear polarization by a λ/4 phase difference plate 11, and a polarization degree is enhanced by the incident side polarizing plate 12. This light is modulated by an image signal of an image forming liquid crystal panel 13 to be made circular polarization by the λ/4 phase difference plate 14 again. In a selectively transmitting cholesteric liquid crystal 4, transmission light of one directional rotation component is obtained by a selective transmission characteristic in the rotational direction. The transmission light is made the linear polarization by the λ/4 phase difference plate 15, and the polarization degree is enhanced by the emission side polarizing plate 16. A blue color component is separated/modulated also in the similar form. Further, a green color component whose either circular polarization component of left/right is taken out by a dichroic filter 8 and the cholesteric liquid crystal 9, and so on, the modulation similar to the red color, blue color is performed. Respective light synthesized by a dichroic mirror 7 are projected by a projection lens 10.

5. 发明专利

JPH09304772A POLARIZATION LIGHTING SYSTEM AND PROJECTION DISPLAY DEVICE USING RELEVANT LIGHTING SYSTEM 失效
公开(公告)号：JPH09304772A
公开(公告)日：1997-11-28
申请号：JP15678796
申请日：1996-06-18
申请人： SHARP KK
发明人： TOMINAGA RYUICHI , SAKAI YOSHIHARU
IPC分类号： G02B5/30 , F21V13/04 , G02F1/13 , G02F1/1335 , G02F1/13357 , G09F9/00 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To provide a polarization lighting system improving an angular characteristic or an intensity distribution of irradiation light on a surface to be irradiated and a projection display device using this lighting system. SOLUTION: A leftward turn circular polarization part of light of a light source transmits through a cholesteric liquid crystal layer 3 through an elliptic mirror 2 to become parallel light L3 by a flat concave lens 4. The reflected rightward turn circular polarization is reflected by a paraboloidal surface mirror 5 making a point folding back the second focal point of the elliptic mirror 2 by the plane of the liquid crystal layer 3 the focal point F3 to become the light L7, L8 parallel to an optical axis AX. Since the rotational direction of the polarization becomes an opposite leftward turn at a reflection time, The light transmit through the liquid crystal layer 3 this time to transmit through the flat part with a radius r of the flat concave lens 4. The sum of the transmitting whole light L3, L4, L7, L8 becomes the parallel light with the intensity nearly equal to the same of the light source 1 and with the same rotational direction of the circular polarization. Thereafter, a display image is projected through a λ/4 plate, a liquid crystal panel and a projection optical system.

6. 发明专利

JPH06110079A REFLECTION TYPE LIQUID CRYSTAL PROJECTOR 失效
公开(公告)号：JPH06110079A
公开(公告)日：1994-04-22
申请号：JP25949692
申请日：1992-09-29
申请人： SHARP KK
发明人： SAKAI YOSHIHARU
IPC分类号： G02F1/13 , G02B27/28 , G02F1/1335 , G02F1/135
摘要： PURPOSE:To emit read light and write light by one light source and to prolong the life of the brightness of a projected image. CONSTITUTION:The reflection type liquid crystal projector, equipped with a photoconductor which varies in impedance with the write light and reflection type liquid crystal 11 having twisted nematic liquid crystal changing the polarized state of the read light by changing in its twist structure by the variation in the impedance of the photoconductor, is equipped with a spectral diffracting means which separates the light emitted by the light source 21 into light waves of mutually orthogonal components and uses one light wave as the read light and the other as the write light and an adjusting means 22 which adjusts the quantity of the write light to a constant value.

7. 发明专利

JPS622792A VIDEO CONVERTER 失效
公开(公告)号：JPS622792A
公开(公告)日：1987-01-08
申请号：JP14234785
申请日：1985-06-27
申请人： SHARP KK
发明人： ABUMI TAKAO , SAKAI YOSHIHARU , NAKAYAMA YUKIO
IPC分类号： H04N9/74 , G09G5/04 , G09G5/12 , G09G5/18 , H04N5/278
摘要： PURPOSE:To obtain the picture without the turbulence of the color synchronization by selecting automatically the external synchronization even when the computer selects the synchronization with a CPU mode, the video converter selects the synchronization with the CPU mode and the computer is changed over to the superimposing mode. CONSTITUTION:When a computer 3 is made into a superimposed mode, the RGB signal outputted from the computer 3 is necessary to be outputted matching to the synchronization of an NTSC signal, and therefore, matching to the synchronizing signal of the NTSC signal from a monitor television 2 side, a horizontal synchronizing signal signal HD and a vertical synchronizing signal VD are supplied to the computer 3. the computer 3 obtains the synchronization with the horizontal synchronizing signal HD and the vertical synchronizing signal VD, outputs the RGB signal and reflects the video signal and the RGB signal on the same screen. For such a reason, the horizontal synchronizing signal HD is inputted even to a mode detecting circuit 13, passes through an integration circuit 15, conducts a transistor Q1, regardless of the changeover condition of a changeover switch 5, a changeover switch signal line comes to be an 'L' level and automatically comes to be an external synchronizing mode.

8. 发明专利

JPS61283297A COMPOUND VIDEO SIGNAL PROCESSOR 失效
公开(公告)号：JPS61283297A
公开(公告)日：1986-12-13
申请号：JP12486885
申请日：1985-06-07
申请人： SHARP KK
发明人： ABUMI TAKAO , SAKAI YOSHIHARU , NAKAYAMA YUKIO
IPC分类号： H04N9/77 , H04N9/68
摘要： PURPOSE:To secure picture quality of good and of less deteriorated even when the color adjustment or the outline compensation of a compound video signal is applied by processing simultaneously and in parallel both signals for the color adjustment and the outline compensation. CONSTITUTION:For the first, a compound video signal P is inputted to a Y/C separation circuit 4 and at the Y/C separation circuit 4, the compound video signal P is separated to a chroma signal C and a luminance signal Y. The separated chroma signal C is inputted to a color correcter circuit 8 in a color correcter part 6 and the luminance signal Y to an enhancer circuit 12 in an enhancer part 10 respectively. The chroma signal C inputted to the color corrector circuit 8, after the color adjustment is applied on it with setting a subcarrier L, is inputted to a mixing circuit 20 through a color correcter changeover switch 16. On the other hand, the luminance signal Y inputted to the enhancer circuit 12, after the outline compensation is applied on it, is inputted to a Y/C mixing circuit 20 through an enhancer change-over switch 18.

9. 发明专利

JPS61264884A IMAGE CONVERTER 失效
公开(公告)号：JPS61264884A
公开(公告)日：1986-11-22
申请号：JP10637385
申请日：1985-05-17
申请人： SHARP KK
发明人： ABUMI TAKAO , SAKAI YOSHIHARU , NAKAYAMA YUKIO
IPC分类号： G09G5/04 , H04N9/74
摘要： PURPOSE:To obtain a signal necessary for the conversion of an RGB signal from a computer to a video signal by converting an internal synchronism signal etc. from a synchronization generating circuit to a composite video signal at a conversion circuit and inputting it in place of an outside video signal. CONSTITUTION:Each of the internal synchronizing signal, a burst signal and a Y signal generated at a synchronization generating circuit 4 is inputted to a black burst circuit 9 and is converted to an internal generating signal S2 in the state of the composite video signal. A change-over switch 10 selects either one of an outside video signal S1 or the internal generating signal S2. With connecting the change-over switch 10 to a terminal (b) side, the internal generating signal S2. With connecting the change- over switch 10 to a terminal (b) side, the internal generating signal S2 is inputted and the signal is separated again to three signals; a Y signal 7, a chroma signal 8 and a synchronizing signal 11 through a Y-C separating circuit 5 and a synchronizing/ separating circuit 6 and they are inputted to a superimpose circuit 3. Thus, the RGB signal from a computer 1 is converted to the composite video signal by an internal synchronization. Based upon the system, it is possible to simplify a circuit so that the switching of the internal synchronization and an external synchronization is performed with one change-over switch.

10. 发明专利

JPS61264870A SYNCHRONIZATION CHANGING DEVICE IN VIDEO CONVERTER 失效
公开(公告)号：JPS61264870A
公开(公告)日：1986-11-22
申请号：JP10637585
申请日：1985-05-17
申请人： SHARP KK
发明人： ABUMI TAKAO , SAKAI YOSHIHARU , NAKAYAMA YUKIO
IPC分类号： H04N9/475 , H04N5/04 , H04N5/073 , H04N5/265 , H04N5/278 , H04N5/445
摘要： PURPOSE:To prevent a malfunction in synchronization change by providing a means which detects whether an outside video signal is inputted or not, a means which detects the state of a synchronization change switch and a means which detects the state of a mode change switch. CONSTITUTION:A signal PIN which represents the presence/absence of the input of the outside video signal is detected by a PIN input detection circuit 9 and a signal INT which represents the changing state of a synchronization change switch 3 is detected by a change logical operation circuit 8. Also, a signal CPU which represents the state of the mode change switch is detected by a mode change signal detection circuit 10. In other words, it is an internal synchronization when it is detected that the outside video signal is not inputted by the circuit 8 and when the inputting of the signal is recognized, it is an external synchronization with the recognition of the selection of the external synchronization at the circuit 9. Also, when a mode except an RGB signal output mode is selected by the circuit 10, it is the external synchronization. Thus, by an automatic synchronization change, the malfunction in the synchronization change can be prevented.

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