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1. 发明专利

JPS60140165A POSITION DETECTOR 失效
公开(公告)号：JPS60140165A
公开(公告)日：1985-07-25
申请号：JP24891883
申请日：1983-12-28
申请人： NIPPON ELECTRIC CO , KUMAGAI GUMI CO LTD
发明人： HATSUDA YOSHIO , NAKAJIMA KAZUMITSU , HIRANO MASAKI
IPC分类号： G01S3/78 , G01S3/782 , G01S17/74 , G01S17/88 , G01S17/89
摘要： PURPOSE:To enable the detection of the position of a moving object accurately up to a long distance by arranging a light wave distance measuring apparatus and a laser unit to make beam parallel while a corner reflector separated by the interval between the two apparatuses from the center of a screen. CONSTITUTION:A light wave distance measuring device 1 adapted to project light for measuring distance on a corner reflector 6 to measure the distance by the reflected light and a laser oscillator 2 adpapted to emit light limited in the wide angle to be projected on a screen 5 provided on a moving object 4 as laser pattern 11 are placed in a precision automatic tracking apparatus 3 in such a manner as to make lightwave and laser light parallel. A corner reflector 6 is mounted on the screen 5 separated by the center-to-center interval between the device 1 and the oscillator 2 from the center thereof 5. Then, the apparatus 3 is directed to the screen 5 to take a picture with a TV camera 7 and then, moved to align the center. Thus, the position of the object 4 is calculated from the measured distance data.

2. 发明专利

JP2518062B2 失效
公开(公告)号：JP2518062B2
公开(公告)日：1996-07-24
申请号：JP26810489
申请日：1989-10-17
申请人： NIPPON ELECTRIC CO
发明人： HATSUDA YOSHIO
IPC分类号： G01C1/02 , G01S17/10

3. 发明专利

JPS5539689A LASER GYRO 失效
公开(公告)号：JPS5539689A
公开(公告)日：1980-03-19
申请号：JP11394678
申请日：1978-09-14
申请人： NIPPON ELECTRIC CO
发明人： TSUCHIYA TAKASHI , HATSUDA YOSHIO
IPC分类号： G01C19/64 , G01C19/66 , H01S3/032 , H01S3/083
摘要： PURPOSE:To highten the measuring accuracy by effecting the photographical blackening adacent to at least one capillary of the laser plasma capillary tube installed in the ring resonance device inside and then by reducing the backward dispersing light and reducing the width of lock-in area. CONSTITUTION:Ring laser is consists in the following reflecting mirror 5, 6 and 7 placed respectively in the peak of the triangle and a laser tube 1 installed in a light pathway 12 in light pathway 10, 11 and 12 which are produced among the abovementioned mirrors. According to the layout, the laser tube 1 is composed of a laser tube 13 made of a glass in which a laser plasma capillary tube 2 is penetrated through. At this time, said blackening is effected in tube end 14 and 15 of the tube 2 to decrease light reflection and dispersing and then to reduce the backward light scattering therein. By doing so, the width of lock-in area can be remarkably reduced and that measuring accuracy using laser gyro can be improved.

4. 发明专利

JPS54151457A FORMING METHOD OF REFLECTION REDUCING COATING 失效
公开(公告)号：JPS54151457A
公开(公告)日：1979-11-28
申请号：JP6027478
申请日：1978-05-19
申请人： NIPPON ELECTRIC CO
发明人： HATSUDA YOSHIO , ISOBE KANICHI
IPC分类号： G02B1/04 , G02B1/10 , G02B1/11 , G02B1/111
摘要： PURPOSE:To reduce the surface reflection of optical material by holding a transparent sheet of a specified thickness having a refractive index smaller than the refractive index of the optical material being a target in close contact with the surface of the optical material. CONSTITUTION:In a reduced pressure vacuum chamber, a film 22 [e.g., polyethylene sheet of thickness 33mu (optical thickness 50mu), refractive index 1.518] is compression-bonded and fixed on the surface of an optical material 21 (e.g., crystal quartz, refractive index 2.117 at wavelength 200mu), after which air is introduced into the chamber to let the film 22 be compression-bonded and held on the surface of the optical material 21. The provision of the abovementioned reflection reducing film enables the surface reflection at a wavelength 200mu to be made nearly zero. In case light other than the wavelength 200mu is a target, it is only required to make the optical thickness of the film 22 at 1/4 the target wavelength. The abovementioned method is particularly effective for far infrared region where thick film is required as a reflection reducing film.

5. 发明专利

JPS5369682A APPARATUS FOR MEASURING TRAVELLING SPEED AND POSITION OF TRAVELLING BODY 失效
公开(公告)号：JPS5369682A
公开(公告)日：1978-06-21
申请号：JP14530876
申请日：1976-12-02
申请人： NIPPON ELECTRIC CO
发明人： HATSUDA YOSHIO , ISOBE KANICHI
IPC分类号： G01D5/36 , G01B11/14 , G01D5/30 , G01P3/68
摘要： PURPOSE:To detect speed and position of a travelling body simultaneously, by receiving light reflected off from parallel reflectors arranged on the travelling body with a predetermined interval and from a reflector gruoup arranged in a plurality of vertically spaced rows, which involve different number of reflector elements.

6. 发明专利

JPS54115262A PRECISION LENGTH MEASURING APPARATUS 失效
公开(公告)号：JPS54115262A
公开(公告)日：1979-09-07
申请号：JP2311178
申请日：1978-02-28
申请人： NIPPON ELECTRIC CO
发明人： TSUCHIYA TAKASHI , HATSUDA YOSHIO
IPC分类号： G01B9/02
摘要： PURPOSE:To achieve the reduction in measurement time and the improvement in measurement accuracy by using a ring laser oscillator. CONSTITUTION:A photo detector 12 and a prism 21 which is mounted with a reflecting film 23 for making the quantities of laser light 19 and reflected light 20 equal and gives a slight angle theta between the laser light 19 and reflected light 20 are combined to a ring laser oscillator consisting of total reflecting mirrors 14, 15, an output side mirror 16 drawing out laser light and a laser medium 17. As a result, the two laser lights 18, 19 of the same frequency are drawn out from the ring laser oscillator and the laser light 18 of the one side is reflected by the reflector 9 installed to the moving object under measurement to become reflected light 20 and is further reflected by the prism 21 to become reflected light 22. This reflected light 22 and the laser light 19 are then superposed and are radiated to the photo detector 12, by which the moving distance and direction of the moving object are measured. Hence, the highly accurate measurement is accomplished without requiring warm-up time.

7. 发明专利

JPS54112580A ELECTROLESS DISCHARGE LAMP 失效
公开(公告)号：JPS54112580A
公开(公告)日：1979-09-03
申请号：JP2044278
申请日：1978-02-23
申请人： NIPPON ELECTRIC CO
发明人： HATSUDA YOSHIO , TSUCHIYA TAKASHI
IPC分类号： G01R33/00 , G01R23/00 , H01J65/04
摘要： PURPOSE:To enable to easily set suitably temperature necessary for an enclosure and high frequency input power in balance by providing a projection for containing small amount of alkali metal at the end at the enclosure. CONSTITUTION:A slender projection 14 of longer length than the radius of an enclosure sphere 1 is provided at the spherical enclosure 1 for containing small amount of alkali metal 3 at the end thereof. Since the metal 3 is thus located at the projection 14 at the lowest temperature in the enclosure 1, the alkali metal vapor pressure in a lamp is determined by the temperature at the end of the projection 14. Since magnetic line of force in high frequency magnetic field produced by an inductance coil 7 merely slightly crosses the end of the projection 14, it hardly heat directly the metal 3 to thus render the temperature of the metal 3 to be determined by the temperature at the end of the projection 14 of a lamp 15. Accordingly the metal vapor pressure can be easily set to suitable value by selecting the length of the projection 14.

8. 发明专利

JPS5552281A RING LASER 失效
公开(公告)号：JPS5552281A
公开(公告)日：1980-04-16
申请号：JP12654978
申请日：1978-10-13
申请人： NIPPON ELECTRIC CO
发明人： TSUCHIYA TAKASHI , HATSUDA YOSHIO
IPC分类号： H01S3/083
摘要： PURPOSE:To reduce the width of a lock-in region and improve the measuring accuracy of a laser gyro by providing lenses near both end faces of a single mode light fibre turned more than once and providing a reflecting mirror and a laser active medium between the lenses. CONSTITUTION:Near both end faces of a single mode light fibre 10 turned more than once, two sets of lenses 11 and 12 are provided, and between them, a translucent reflecting mirror 3 and a laser active medium are placed. For instance, a ring laser is formed of a single mode light fibre 10 turned several times, coupling lenses 11 and 12, a laser plasma tube 4 and a reflecting mirror 3. And light beats are produced by superposing laser beams 5 and 6 with a prism or the like, and by detecting the beats, revolution speeds around the axis 13 of a laser resonator are measured. By doing so, the width of a lock-in region can be reduced and the measuring accuracy of a laser gyro can be improved, because the width of the lock-in region in this case is inversely proportionate to the area surrounded by the light passage of the ring laser.

9. 发明专利

JPS5377488A ATOMIC BEAM GENERATOR 失效
公开(公告)号：JPS5377488A
公开(公告)日：1978-07-08
申请号：JP15459776
申请日：1976-12-21
申请人： NIPPON ELECTRIC CO
发明人： HATSUDA YOSHIO , TSUCHIYA TAKASHI
IPC分类号： H01S1/00 , G21K1/00 , H03L7/26
摘要： PURPOSE:To stabilize operation by making fixing part where an atomic beam generator is fixed to an atomic beam vessel adiabatic and keeping a slip part at a higher temperature than the generator main mody and making the part between the slit and the main body adibatic by a knife edge.

10. 发明专利

JPS5354069A LASER DOPPLER SPEEDMETER 失效
公开(公告)号：JPS5354069A
公开(公告)日：1978-05-17
申请号：JP12921876
申请日：1976-10-26
申请人： NIPPON ELECTRIC CO
发明人： TSUCHIYA TAKASHI , HATSUDA YOSHIO
IPC分类号： A61B5/0285 , G01S17/58
摘要： PURPOSE:To enable variable operating the cross angle of two luminous fluxes and rotating of the fluxes necessary for the measurement of a speed by using a beam splitter composed of parallel plane permeable block and two equilateral prisms as a luminous flux splitting unit.

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