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1. 发明专利

JP2001337308A LIQUID CRYSTAL PROJECTOR 失效
公开(公告)号：JP2001337308A
公开(公告)日：2001-12-07
申请号：JP2000159840
申请日：2000-05-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO , AONO SHOZO , HASHIMUKAI MASASHIGE
IPC分类号： G02F1/13 , G02F1/1333 , G02F1/1335 , G02F1/13357 , G03B21/00 , G03B21/14 , H04N5/74 , H04N9/31
摘要： PROBLEM TO BE SOLVED: To provide a device with film construction which prevents deviation of the liquid crystal pixels of a liquid crystal projector after adjusting convergence and which makes hardware simply exchangeable in market. SOLUTION: In the structure of the liquid crystal projector, a polarizing plate and a liquid crystal panel of the liquid crystal projector are constituted as a unit of hardware and also holding hardware moved for adjusting the convergence separated from hardware for mounting the liquid crystal. Furthermore, the structure enables to exchange them in market only by exchanging the hardware for mounting the liquid crystal and to easily move the position of the hardware in market without disassembling the set. Also, the holding hardware is structured so as to be firmly held with the same joint bases on the upper and lower sides of a combined prism.

2. 发明专利

JP2001318359A LIQUID CRYSTAL PROJECTOR 失效
公开(公告)号：JP2001318359A
公开(公告)日：2001-11-16
申请号：JP2000134586
申请日：2000-05-08
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO
IPC分类号： G02B5/30 , G02F1/13 , G02F1/1335 , G02F1/13357 , G02F1/13363 , G03B21/16 , G03B33/12
摘要： PROBLEM TO BE SOLVED: To naturally cool a polarized light converting element and a phase difference film. SOLUTION: Sapphire glass with high heat emissivity is used as glass sticking together the polarized light converting element 13 of a liquid crystal projector and the phase-difference film 41 used for it.

3. 发明专利

JPH1090811A FRONT PROJECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH1090811A
公开(公告)日：1998-04-10
申请号：JP24176096
申请日：1996-09-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HASHIMUKAI MASASHIGE , OKADA TAKEHIRO , AONO SHOZO , HOSHINO MAKOTO , TANIYAMA TAKANOBU
IPC分类号： G03B33/12 , G03B21/00 , G03B21/16 , G03B21/20 , G03B21/22 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To reduce an influence of light leaked from a light source lamp part and an influence of hot exhaust air from a cooling ventilation fan and a noise of a fan by installing an outlet of a cooling ventilation fan and the projection port of a projecting lens part on the same surface side. SOLUTION: By inserting a reflection mirror 7 between the light source lamp part 1 and a spectroscopic part 2 and forming an optical block part 10 to a U-shape, the rear direction of the light source lamp part 1 is coincident with the projecting direction of the projection lens part 6. As for the optical block part 10, the cooling ventilation fan 8 is arranged behind the light source lamp part 1, and the exhaust hole 9 is arranged on the main body package 20. It is necessary for the light source lamp part 1 to be controlled to have a hot heat and a stable temperature, then, the air is forcibly exhausted outside the set main body 30 through the cooling exhaust hole 9 by the fan 8. The light emitted from the light source lamp part 1 is condensed by a reflection mirror 11, and the light is enlarged and projected on a screen 12 through the projecting lens 6. The light of the light source lamp part 1 is partly discharged with the hot air outside the main body through the hole 9 as leak light.

4. 发明专利

JPH0678254A PROJECTION TELEVISION RECEIVER 失效
公开(公告)号：JPH0678254A
公开(公告)日：1994-03-18
申请号：JP22961992
申请日：1992-08-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO
IPC分类号： G03B21/10 , H04N5/64 , H04N5/74
摘要： PURPOSE:To provide a projection television receiver for which a distance between a reflection mirror and a projection lens is minimized, the reflection mirror and the projection lens are constituted in one fixture and the fixing accuracy of the reflection mirror is improved. CONSTITUTION:The projection lens 1 is integrally constituted with a CRT 2 and is fixed to an attaching fitting 3, the attanching fitting 3 is supported by a fixing fitting 4 and the reflection mirror 5 is integrally constituted with the fixing fitting 4 simultaneously as well. In such a manner, the reflection mirror 5 and the projection lens 1 are constituted in the shortest distance, the accuracy of the attachment angle of the reflection mirror 5 is held and a screen is not affected even when a force is added from the outside of a main body or a back cover receives temperature change or secular change. Also, since the distance from the tip of the projection lens 1 to the reflection mirror 5 is as short as 100-120mm, the size of the fixing fitting 4 can be minimized as well.

5. 发明专利

JPH0566480A LIQUID CRYSTAL MULTIPROJECTION DEVICE 失效
公开(公告)号：JPH0566480A
公开(公告)日：1993-03-19
申请号：JP22997191
申请日：1991-09-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO
IPC分类号： G03B21/62 , G03B33/12 , H04N5/74 , H04N9/31
摘要： PURPOSE:To solve a problem that a video is dark (peripheral light quantity is small) at a peripheral part on the screen of a multiscreen which is constituted of plural screens or a video is difficult to view when it is viewed from a short distance because a light quantity from the screens on the periphery is insufficient. CONSTITUTION:This is a liquid crystal multiprojection device where the screens on the periphery out of the plural screens are constructed so that the center of the ruggedness 29a of a Fresnel lens sheet 29 may be somewhat deviated toward the central part of the screen (the deviation of the center of the ruggedness 29a is variable according to purposes) to condense the light on the center part of the entire screen, and the uniformity of brightness for the video which is formed as one screen is enhanced.

6. 发明专利

JPH04140784A LIQUID CRYSTAL PROJECTOR 失效
公开(公告)号：JPH04140784A
公开(公告)日：1992-05-14
申请号：JP26403990
申请日：1990-10-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO
IPC分类号： H04N5/74 , G09F9/00 , H04N9/31
摘要： PURPOSE:To eliminate the need for a light, etc., in the vicinity of an operation part and to operate the operation part even in a dark room by providing transfer parts such as a fiber which transfers a part of light quantity from a light source to the vicinity of the operation part. CONSTITUTION:The light source 1 provided with a cold mirror 2 which separates an infrared ray from a visible light beam is held by a box-like light source supporting body 3 and the operation part 4 is fixed inside a door 6 which is attached to the main body 5 of a set and is reversely rotated. Since one part of the light is carried from the light source 1 to the vicinity of the operation part 4, the transfer parts 7 such as the fiber, etc., is fixed on the attaching part of a supporting body 3. Thus, the excess light from the light source is transferred to the operation part so that the operation of the operation part can be performed even in the dark room, and it is unnecessary to install the light, etc., in the vicinity of the operation part. By branching the fiber, the light from the light source is freely transmitted whatever part the operation part exists in.

7. 发明专利

JPH04131834A LIQUID CRYSTAL PROJECTOR 失效
公开(公告)号：JPH04131834A
公开(公告)日：1992-05-06
申请号：JP25324490
申请日：1990-09-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO
IPC分类号： G02F1/133 , G03B21/14
摘要： PURPOSE:To eliminate a decrease in brightness balance and a color shade phenomenon by providing a right-left adjusting mechanism which moves a light source box in the right-left direction along the optical axis and an inclination adjusting mechanism which adjusts the inclination direction of the light source box to the optical axis. CONSTITUTION:The light source box 3 is supported by one right-left adjusting screw and two inclination adjusting screws 8. The screw part 7a of the right-left adjusting screw 7 is inserted into the female screw part 3a of the light source box 3 and held by an E ring 5 to constitute the right-left adjusting mechanism, and the inclination adjusting screws 8 consist of eccentric shafts 8a and 8b and are inserted into fitting parts 3b and 3c of the light source box 3 respectively to constitute the inclination adjusting mechanism. The light source box 3 is moved right and left by rotating the right-left adjusting screw 7 and moved up and down by rotating the inclination adjusting screws 8. Consequently, the optical axes of a light source and an optical system can freely be adjusted to eliminate the decrease in brightness balance and color shade phenomenon.

8. 发明专利

JPH0468689A LIQUID CRYSTAL PROJECTOR 失效
公开(公告)号：JPH0468689A
公开(公告)日：1992-03-04
申请号：JP17602790
申请日：1990-07-03
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO , MAEDA KAZUKI
IPC分类号： G03B21/00 , G09F9/00 , H04N5/74 , H04N9/31
摘要： PURPOSE:To avoid the deterioration of performance caused by the heat source conduction from a light source by fixing a light source enclosure holding the light source an a cold mirror to an optical supporting member only in the vicinity of an installation part and constructing this projector so as to be through an air layer with non-connection other than the vicinity of the installation part. CONSTITUTION:A light source 1 and a cold mirror 2 separating infrared rays and visible rays are held by a light source box 3. An optical supporting member 4 holding a panel an a dichroic mirror pinches the light source box 3 with a part in construction, and is connected to the light source box 3 through the air layer by integrally provided plural connection members 5A-5F. Thus, since the member 4 and the box 3 are fixed with the minimum space by the connection members 5A-5F, the heat conduction from the light source 1 to the member 4 is extremely small, the heat from the light source 1 is smoothly discharged by a fan 8, and the increase of the temperature in the entire set can be avoided.

9. 发明专利

JPH03107115A LENS FOCUS LOCKING DEVICE 失效
公开(公告)号：JPH03107115A
公开(公告)日：1991-05-07
申请号：JP24383489
申请日：1989-09-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO , IKEDA KENICHI
IPC分类号： G02B7/02 , G02B3/02 , G03B3/02 , G03B13/32 , H04N5/74
摘要： PURPOSE:To facilitate assembly and to contrive a cost reduction as well by forming 1st and 2nd fixing plates and 1st and 2nd revolving shafts of parts respectively having the same shapes. CONSTITUTION:A middle lens barrel 1 is moved forward and backward in order to focus the lens, but two pieces of lock bolts 9 are engaged with cam holes 3a, 3b of an outer lens barrel 3 and, therefore, the middle lens barrel 1 turns along the cam holes 3a, 3b and move in an optical axis direction in conformity with the curves of the cam. The same holds true of a front lens barrel 2. The outer lens barrel 3 and the middle lens barrel 1 as well as the front lens barrel 2 and the middle lens barrel 1 clatter less in the fitting parts and are, therefore, free from the inclination of the optical axis. The bolts 9 are turned to the last upon ending of the focusing. Lock nuts 10 are then raised and the outer wall of the outer lens barrel 3 is fastened by means of the bolts 9 and the nuts 10 to prevent the middle lens barrel 1 from moving on the side where a spacer 11 is inserted. The bolt 9 engages with the cam hole 3b and acts as the guide for sliding and rotating on the side where the spacer 11 is not inserted. While the nuts 10 and the bolts 9 of the same parts are used at the top and bottom of the centrally split middle lens barrel 1, one thereof plays the role of stopping the rotation and the other the role of a guide.

10. 发明专利

JPH0143374B2 失效
公开(公告)号：JPH0143374B2
公开(公告)日：1989-09-20
申请号：JP25135883
申请日：1983-12-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA TAKEHIRO , HASHIMOTO MASAAKI
IPC分类号： G11B17/049 , G11B17/02 , G11B17/04

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