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11. 发明专利

JPH0330202A LIGHTING DEVICE 失效
公开(公告)号：JPH0330202A
公开(公告)日：1991-02-08
申请号：JP16605089
申请日：1989-06-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOBAYASHI SHUNKAI , KANO MASAO , MUROTA SUMIE , MYODO SHIGERU
IPC分类号： F21S2/00
摘要： PURPOSE:To restrict a difference between the luminance of a display scope and the luminance of the surrounding of the display scope by locating a projection limiting plate at the intermediate place between a collimation optical system and a projection optical system. CONSTITUTION:A lighting system comprises a collimation optical system C and a projection optical system P, and a projection limiting plate 4 for shading the center of a projected surface to form a non-projected part 8 is located at the intermediate place between the collimation optical system C and the projection optical system P. The diffuse reflectance luminance on a display scope of a projected surface 12 is thereby restricted, and a difference between the luminance of the display scope and the luminance of the surrounding of the display scope can be restricted, for example fatigue of an observer's eyes caused by an increase in the difference between the luminance of a television faceplate and the luminance of the surrounding of the television faceplate is reduced and a headache of the observer is prevented.

12. 发明专利

JPH02114207A LIQUID CRYSTAL DISPLAY DEVICE WITH OPTICAL FIBER 失效
公开(公告)号：JPH02114207A
公开(公告)日：1990-04-26
申请号：JP26878888
申请日：1988-10-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： ONISHI KEITA , OTA MAKOTO , IMAMURA MUNETATSU , KANO MASAO , MYODO SHIGERU
IPC分类号： G02B6/00 , G02B6/04
摘要： PURPOSE:To sufficiently mix colors even in a short distance and, at the same time, to prevent the occurrence of differences between the colors of the light made incident on an optical fiber and the colors of the light appearing at the outgoing end of the fiber by providing composite picture elements respectively composed of plural picture elements of each color of R, G, and B on the incident ends of optical fibers. CONSTITUTION:Each composite picture element 7 is composed of R, G, and B picture elements 9, 10, and 11 uniformly distributed within the outline 8 of an optical fiber. This composite optical fiber 7 is constituted in such a way that the area ratio of R, G, B included therein is almost the same as the ratio of respective totalized areas of all R, G, B picture elements in the optical fiber even when any part of the optical fiber is segmented with a circle having the area by three picture elements. Light emitted from a light source 5 and passed through the composite picture element is made incident on the optical fiber 4 after the light is adjusted in light quantity and rays of light of three colors are emitted from the outgoing end of the fiber 4 in an arbitrary ratio. Therefore, all colors can be displayed by one optical fiber and, at the same time, a change in color caused by the watching angle or a bend of the fiber can be prevented.

13. 发明专利

JPH01309485A VIDEO TELEPHONE SET 失效
公开(公告)号：JPH01309485A
公开(公告)日：1989-12-13
申请号：JP13992088
申请日：1988-06-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： KANO MASAO , MUROTA SUMIE , KOBAYASHI SHUNKAI , MYODO SHIGERU
IPC分类号： H04N7/14 , H04M1/02
摘要： PURPOSE:To radiate sufficient lighting to an object opposed to a television camera and to pick up an excellent stereoscopic video image by providing a lighting device radiating an object from two directions at pickup and able to regulate the lightness in each direction to a telephone set main body. CONSTITUTION:A video telephone set is provided with the 1st and 2nd lighting sources apart from each other at two positions on the device upper part, the 1st lighting light source 6a is connected to a power supply 14 via a dimmer 7 provided with a dimmer operating section 8, the 2nd lighting light source 6b is connected directly to the power supply 14 and the maximum illuminance of the lighting source 6a is set brighter than the illuminance of the lighting source 6B. The dimmer operating section 8 is operated toward light diminishing direction to make the lighting dark and operated toward light increasing direction to made the lighting bright. Moreover, the lighting source 6b is always provided with a prescribed illuminance and the maximum illuminance of the lighting source 6a is set brighter than the illuminance of the lighting source 6b, then the brightness of the object is regulated optionally by operating the dimmer operating section 8 and the lightness of the object in the horizontal direction is varied optionally to pick up a video image with a stereoscopic sense.

14. 发明专利

JPH01300784A VIDEO TELEPHONE SET 失效
公开(公告)号：JPH01300784A
公开(公告)日：1989-12-05
申请号：JP13204488
申请日：1988-05-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOBAYASHI SHUNKAI , MUROTA SUMIE , MYODO SHIGERU , KANO MASAO
IPC分类号： H04N7/14 , H04M1/22
摘要： PURPOSE:To obtain a more satisfactory image by providing a lighting equipment consisting of a surface light source which can be contained in a telephone set body, so that it can be contained easily and it is not too dazzling. CONSTITUTION:As for a lighting equipment 6, a surface light source is used, and said equipment is provided on a telephone set body, and can be contained in a containing space 7, when it is not used. In such a way, since the surface light source is used for an illumination source of the lighting equipment 6, it is prevented that it becomes too dazzling, comparing with an illumination by a point light source, and a display of the display becomes indistinct, and also, since the surface light source is used, a shadow part is not made on an object to be photographed, a more satisfactory image can be obtained, and moreover, said equipment can be contained easily in the containing space 7 of the telephone set body.

15. 发明专利

JPH01300783A VIDEO TELEPHONE SET 失效
公开(公告)号：JPH01300783A
公开(公告)日：1989-12-05
申请号：JP13204388
申请日：1988-05-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： ANZAI YOSHINORI , KANO MASAO , MYODO SHIGERU , MUROTA SUMIE , KOBAYASHI SHUNKAI
IPC分类号： H04N7/14 , H04M1/22
摘要： PURPOSE:To irradiate an object to be photographed by an illumination being enough for an image pickup without giving dazzle to the object to be photographed by providing a lighting equipment for irradiating near infrared rays, and a television camera having an image pickup characteristic for covering from a visible light region to a near infrared-ray region, on a telephone set main body. CONSTITUTION:When a telephone receiver 5 is picked up, a near infrared-ray light equipment 6 provided on a telephone set main body is lighted, a caller's face being an object to be photographed is irradiated by near infrared rays, a reflected illuminating light is brought to image pickup with high sensitivity by a television camera 1A, and it is brought to monitor display on a display 4. Subsequently, this image is sent as a video signal to a transmitting/receiving part 2, transferred to a telephone set of the other party being a called party side, and brought to monitor display as a distinct image on the display 4 of the telephone set of the other party. That is, according to this inversion, a caller's face being an object to be photographed is illuminated by near infrared rays by which eyes scarcely sense brightness, therefore, a sufficient illumination irradiates without giving dazzle to the object to be photographed, and a distinct and satisfactory image can be obtained.

16. 发明专利

JPS61239823A PLANT GROWING APPARATUS 失效
公开(公告)号：JPS61239823A
公开(公告)日：1986-10-25
申请号：JP8172185
申请日：1985-04-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMANOSHITA MARI , KANO MASAO , MYODO SHIGERU , YAMAZAKI HIROYOSHI , ANZAI YOSHINORI
IPC分类号： A01G9/00

17. 发明专利

JPH097415A COLOR TEMPERATURE VARIABLE LIGHT PROJECTOR 失效
公开(公告)号：JPH097415A
公开(公告)日：1997-01-10
申请号：JP15032995
申请日：1995-06-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： MURAI TAKUO , MYODO SHIGERU
IPC分类号： F21V7/22 , F21V9/40 , H05B35/00 , F21V9/10
摘要： PURPOSE: To attain size reduction, simplify the constitution, and inexpensively vary a color temperature by projecting the separated transmitted light and reflected light respectively different in a light color through a light quantity adjusting part, a color mixing part and a light projecting part. CONSTITUTION: The light source light from a main light source 1 is separated into two parts of the yellow light in the transmitting direction and the blue light in the reflecting direction (the vertical direction) on a blue reflecting type dichroic mirror 4. A light quantity adjusting part 5 adjusts a quantity of light of the yellow light and the blue light. A color mixing part 6 mixes the yellow light and the blue light with each other. A light projecting part 7 projects the color mixed light. When directivity and color mixing performance of the radiated light are highly valued, it is desirable that, for example, optical paths of two light of the blue light and the yellow light are made almost parallel to each other by devising the constitution of the light projecting part 7.

18. 发明专利

JPH0831324A METHOD AND DEVICE FOR INSPECTION OF SHADOW MASK 失效
公开(公告)号：JPH0831324A
公开(公告)日：1996-02-02
申请号：JP16401794
申请日：1994-07-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： MYODO SHIGERU , KISHI TOSHINOBU , NISHIGUCHI KENICHI , TAKEOKA KUNIO
IPC分类号： H01J9/42 , H01J9/14
摘要： PURPOSE:To inspect unevenness of a shadow mask easily by producing an electric signal complying with the light quantity passing through holes provided in a measuring region on a shadow mask, and determining the change in the light transmittance while the measuring region is shifted. CONSTITUTION:Among incident beams which are emitted from a light source 1 and put incident to a shadow mask 4, the light 6 which has penetrated holes 8 provided in a great number in the measuring region 10 is received by a light receiving means 2. The distribution of the transmittance over the shadow mask 4 is measured while it is moved by a moving means 7 in the direction of Arrow 9. In a small region containing a plurality of holes 8, the change in the mean brightness of the holes 8 and other parts is compared by a calculating means 3 with the change in the brightness resulting from unevenness of the shadow mask 4. Unevenness can be sensed by enlarging the latter brightness change resulting from unevenness.

19. 发明专利

JPH06148601A DIPLAY DEVICE 失效
公开(公告)号：JPH06148601A
公开(公告)日：1994-05-27
申请号：JP29570292
申请日：1992-11-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： ASHIZAKI YOSHIHIRO , TEJIMA AKIRA , MYODO SHIGERU
IPC分类号： G02F1/1333 , G02B27/02 , G02F1/1335 , G09F9/00
摘要： PURPOSE:To improve luminance in the inside of a casing and to improve picture quality by using a shielding plate with diffusivity as the shielding part of a shielding plate which covers the outside of the effective screen of a display means. CONSTITUTION:The virtual image of a video displayed on the effective screen 2 by illuminating the effective screen 2 of an LCD unit 1 by a back light 4 and inputting it from a video signal input terminal 14 to the LCD unit 1 is recognized by the human eyes 9 by using an ocular 5. At this time, the shielding plate 30 Is seen as a background with arbitrary luminance for the human eyes 9 by forming the screen limiting window 8 of a translucent and gray shielding plate 30 in the same size as that of the effective screen 2, and illuminating the shielding plate 30 with the light of the back light 4 transmitting a glass substrate 3. Also, the irregular reflection of the light emitted from the effective screen 2 of the LCD unit 1 can be suppressed by applying delustering inner coating to the inside of a black cabinet 6 and the shielding plate 30 and shielding external light, and the luminance of the shielding plate 30 can be set at arbitrary luminance between the maximum and minimum luminance of a video signal waveform.

20. 发明专利

JPH05205513A LIGHTING SYSTEM 失效
公开(公告)号：JPH05205513A
公开(公告)日：1993-08-13
申请号：JP1317292
申请日：1992-01-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAWADA SHUNKAI , MYODO SHIGERU , SUZUKI KENJI
IPC分类号： F21S2/00 , F21V8/00 , G02B6/00
摘要： PURPOSE:To provide a lighting system capable of preventing deterioration of efficiency due to dust or the like and securing strength as a single unit of a light conductor, where fine pitches of a light emitting end are freely set in the case of combination with a diffusing plate so that nonuniformity of luminance at a light emitting surface can be eliminated so as to obtain uniform end emitting light, while pitches of the light emitting end are arbitrarily set in the case of absence of a diffusing plate so that light having orientation which can be freely set can be realized. CONSTITUTION:A lighting system comprises a light conductor 2A; a linear light source L arranged in parallel to a light incident side 3A of the light conductor 2A; and a reflector 5A for reflecting light penetrating the light conductor 2A. The light conductor 2A is constituted of a piece of transparent plate, where the upper surface and one side surface are finished into a flat shape while the lower surface is formed in at least two steps or more toward the other side surface so as to form light emitting sides.

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