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31. 发明专利

JPH0511831B2 失效
公开(公告)号：JPH0511831B2
公开(公告)日：1993-02-16
申请号：JP30950086
申请日：1986-12-25
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO , MIZUNO SEIICHIRO
IPC分类号： H01L27/14 , H01L27/146 , H04N5/335 , H04N5/359 , H04N5/361 , H04N5/365 , H04N5/369 , H04N5/374 , H04N5/3745

32. 发明专利

JPH0511830B2 失效
公开(公告)号：JPH0511830B2
公开(公告)日：1993-02-16
申请号：JP30949986
申请日：1986-12-25
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO , MIZUNO SEIICHIRO
IPC分类号： H01L27/14 , H01L27/146 , H04N5/335 , H04N5/359 , H04N5/361 , H04N5/369 , H04N5/374 , H04N5/3745

33. 发明专利

JPH0412736A BIOMEASURING INSTRUMENT 失效
公开(公告)号：JPH0412736A
公开(公告)日：1992-01-17
申请号：JP11653390
申请日：1990-05-02
申请人： HAMAMATSU PHOTONICS KK
发明人： YAMASHITA YUTAKA , OTA KAZUYOSHI , ODA MOTOKI , ITO TOSHIAKI , KYOMASU MIKIO
IPC分类号： A61B5/145 , A61B5/1455
摘要： PURPOSE:To decrease the errors by a difference in reflected light measuring parts and the errors by the color, etc., of the skin by providing the measuring parts at the plural points varying in the distance from a light source and computing the change rate of an exponent part by regarding the attenuation of the intensity of the reflected light with the distance from a light incident position as an exponential function. CONSTITUTION:This instrument is disposed with a 1st light receiving part 22 and a 2nd light receiving part 24 at the two points varying in the distance from the light source 20 provided with two pieces of light emitting diodes 20A, 20B which generate the light of different wavelengths in a housing 12 for housing main constituting parts. The quantity of the reflected light received by the two light receiving parts 22, 24 is considered to attenuate exponential-functionally in accordance with Lambert-Beer law with the distance and the change rate of the exponential part thereof is computed by a microcomputer 28. The errors by the movement of the measuring parts 22, 24 and the contact state of the light source 20 and the detector with the measuring parts 22, 24 are, therefore, decreased. Since the measurement is made by selectively making >=2 kinds of the light rays of the different wavelengths incident on a living body, the errors by the difference in, for example, the color of the skin, etc., are prevented.

34. 发明专利

JPH03232279A PHOTOSENSOR 失效
公开(公告)号：JPH03232279A
公开(公告)日：1991-10-16
申请号：JP30722589
申请日：1989-11-27
申请人： HAMAMATSU PHOTONICS KK
发明人： NAKAYAMA MASAO , TSUJIMURA TAKERU , KYOMASU MIKIO
IPC分类号： H01L31/10 , H01L31/0264 , H01L31/04
摘要： PURPOSE:To prevent a photosensor from deteriorating in characteristics by a method wherein a reflective section comparatively excellent in reflectivity to an optical signal is formed on a side opposite to a photodetective surface interposing a photoelectric conversion region between them. CONSTITUTION:A PIN photodiode is formed in such a manner that an Si film is epitaxially grown on a sapphire substrate 4, N-type impurity is implanted into the film concerned high in concentration, implanted impurities are diffused to form an N layer 5, an I layer 6 is epitaxially grown, P-type impurities are injected into the upper part of the layer 6, and the implanted impurities are diffused to form a P layer 7. Signal lead-out electrodes 8 and 9 are formed so as to be connected to the N layer 5 and the P layer 7 respectively, and then a metal film 10 is attached to the rear side of the sapphire substrate 4, light incident on the P layer 7 passes through the I layer 6 and the N layer 5, attenuating in energy, reaches the metal film 10 penetrating through the sapphire substrate 4 without being attenuated, the reflected light is made to penetrate through the sapphire substrate 4 again and to advance toward the N layer 5, the I layer 6, and the P layer 7 attenuating in energy. In result, an photosensor of this design can be elongated in absorption length without changing a photoelectric conversion region in physical length and prevented from deteriorating in characteristics.

35. 发明专利

JPH0373081A BAR CODE SCANNER 失效
公开(公告)号：JPH0373081A
公开(公告)日：1991-03-28
申请号：JP20975389
申请日：1989-08-14
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO
IPC分类号： G06K7/00 , G06K7/10
摘要： PURPOSE:To accurately recognize a bar code even in a manual scan in which scanning speed is unstable by detecting the edge part of a bar code element by performing scan, and detecting the bar code synchronizing with an edge signal outputted at that time. CONSTITUTION:A sensor part 1 is provided with five photodiodes 2-6. The photodiodes 2-6 detect reflected light at different points when the bar code is scanned. The mutual position relation of respective detecting point in the photodiodes 2-6 is fixed, and the bar code 27 is scanned as holding the position relation. thereby, it is possible to prevent the recognition error of the bar code element at the stage of the post-processing of scan output due to the change of the scanning speed at every scan or that of the speed in one time of scan, or the change of the scan output according to the flaw or the bleeding of the bar code, etc., recognized accidentally as the bar code element.

36. 发明专利

JPH02210209A TILT SENSOR 失效
公开(公告)号：JPH02210209A
公开(公告)日：1990-08-21
申请号：JP3185189
申请日：1989-02-10
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO , INOUE HITOSHI
IPC分类号： G01B11/26
摘要： PURPOSE:To remove the influence of a reflection factor by irradiating a rotary disk with slit light in a radial direction of the rotary disk and photodetecting the reflected light of the slit light by a position detecting element which has a photodetection surface extended in a tangential direction of the rotary disk. CONSTITUTION:The light emitted by a slit light source 5 irradiates one surface of the disk 7 in the radial direction of the rotary disk 7 and is projected on the photodetection surface 6a of the position detecting element 6. Therefore, the surface is irradiated with the light at a tilt angle theta2 to a perpendicular to the plane of the disk 7. For example, when the disk 7 tilts by theta1 based upon the position of the slit light projected on the photodetection surface 6a, for example, while the disk 7 does not tilt, the quantity of the position shifting of the photodetection surface 6a is DELTAX and DELTAX=L.tan2theta1 holds, where L is the distance from the light source 5 to the disk 7. Here, when the voltage value obtained by converting all the photocurrent into the voltage, V1=V0(0.5-DELTAX/C) and V1=V0(0.5-L.tan2theta/C), thereby calculating the tilt angle theta1 from the voltage value V1 corresponding to the projection position of the slit light.

37. 发明专利

JPH02201189A OBJECT PASSAGE DETECTING SENSOR 失效
公开(公告)号：JPH02201189A
公开(公告)日：1990-08-09
申请号：JP2056989
申请日：1989-01-30
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO
IPC分类号： G01V8/20
摘要： PURPOSE:To eliminate a need of exact adjustment of the light intensity of a light source by detecting passage of an object to be measured based on the deviation of the phase of a signal which is obtained at the time when this object intercepts the light to each photodetector. CONSTITUTION:When an object 13 to be measured passes in front of plural light receiving elements, each light receiving element outputs a signal by light interception due to the object 13. Phases of signals from these light receiving elements are deviated because positions of photodetectors are shifted. A phase comparator 20 detects this phase deviation. Consequently, a user accurately detects passage of the object in accordance with the output of the phase comparator 20. Since the phase deviation is used, it is scarecely necessary to adjust the light intensity of the light source.

38. 发明专利

JPH02158214A LOGIC CIRCUIT DEVICE 失效
公开(公告)号：JPH02158214A
公开(公告)日：1990-06-18
申请号：JP31318488
申请日：1988-12-12
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO
IPC分类号： G06F7/00 , H03K19/177
摘要： PURPOSE:To eliminate the wiring region occupying a wide area such as an LCA and to attain high density and high circuit integration by programming a data required for a readout string designation means, a gate circuit selection means and a write cell designation means in advance, and applying a desired logic circuit processing. CONSTITUTION:The circuit has constituents of a gate matrix 1 and a node data matrix 2. The gate matrix 1 is a 4 row and 4 column matrix comprising an AND gate circuit and a NAND gate circuit, and a node data matrix 2 is a RAM in which lots of memory cells each capable of writing and reading out of 1-bit information are formed as a matrix. When a combination circuit comprising gate circuits arranged in n-stage is formed, a data in response to the attained combination circuit is stored to the read string designation means, the gate circuit selection means and the write cell designation means. Thus, the wide area in the wiring region like a logic cell array(LCA) is not required and high density and high circuit integration are attained.

39. 发明专利

JPH01212914A SIGNAL PROCESSING CIRCUIT 失效
公开(公告)号：JPH01212914A
公开(公告)日：1989-08-25
申请号：JP3840088
申请日：1988-02-19
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO , SHIMIZU HIROMITSU , YAMADA KOZO
IPC分类号： H01L31/12 , H03K5/01 , H03K5/1252 , H03K17/78
摘要： PURPOSE:To detect an object even when the time of an open signal is very short by outputting a signal representing the object detecting state when an interruption signal obtained from a photodetection section of an optical modulation type photo interrupter is inputted consecutively for n-time and returning an output signal into the non-detection state when the open signal is inputted from the photodetection section. CONSTITUTION:When two objects are accessed to a degree of in contact with each other as shown in periods b, c, Q outputs of D flip-flop circuits 1-3 all go to a high level at a point of time when a low level of 3-pulse is inputted from a time t3 as to the object shown in the period (b). Thus, an output of a NAND circuit 5 goes to a low level and an output of a latch circuit 8 goes to a high level to obtain a detection output (f) corresponding to the period (b). Furthermore, the period of the clock pulse is set to a time equal to the minimum time or a gas when two objects pass continuously or shorter than that thereby causing a clock pulse without fail in a period (e). Thus, even when the time of the open signal generated between the objects is very short, mis- detection of the object is not caused.

40. 发明专利

JPH01205564A OPTICAL SEMICONDUCTOR DEVICE AND ITS MANUFACTURE 失效
公开(公告)号：JPH01205564A
公开(公告)日：1989-08-17
申请号：JP3046288
申请日：1988-02-12
申请人： HAMAMATSU PHOTONICS KK
发明人： TERADA YOSHITAKA , KYOMASU MIKIO
IPC分类号： H01L27/06 , H01L21/8222 , H01L27/14 , H01L27/146 , H01L31/10
摘要： PURPOSE:To eliminate a parasitic transistor effect by a method wherein a photodiode and a peripheral signal processing circuit part are isolated by a deeply formed isolation region so that a depletion region can be spread largely in a semiconductor crystal growth layer. CONSTITUTION:When a bias is impressed on a photodetecting-face electrode part 34 and an opposite-face electrode part 10 via an ohmic electrode, the p type semiconductor substrate 10, a p type semiconductor crystal growth layer 20 and an n-type semiconductor crystal growth layer 30 are used in a reverse- biased state. At this stage, the upper part of the growth layer 20 (a part other than an autodoped layer 21) is a low-concentration impurity region (a p type region); accordingly, a depletion layer of a p-n junction by the growth layer 20 and the growth layer 30 in a photodiode formation part 100 is spread largely in this growth layer 20. As a result, a junction capacitance value can be reduced; a high-speed response is realized.

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