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1. 发明专利

JPS58137371A SOLID-STATE IMAGE PICKUP DEVICE 失效
公开(公告)号：JPS58137371A
公开(公告)日：1983-08-15
申请号：JP1879382
申请日：1982-02-10
申请人： HITACHI LTD , HITACHI ELECTRONICS
发明人： TAKAHASHI KENJI , NAGAHARA SHIYUUSAKU , OZAWA NAOKI , KUDOU KOUJI , HIRANO MUTSUFUSA
IPC分类号： H04N5/335 , H04N5/341 , H04N5/372 , H04N5/374
摘要： PURPOSE:To obtain a vertical contour signal without using a 1H (one horizontal scanning period) delay circuit, by summing up addition and subtraction outputs of signals for two lines, and thus generating a video signal. CONSTITUTION:The solid-state image pickup element constituted by arraying plural photodetecting elements in two dimensions is read by two lines at a time through a vertical shift register 51, horizontal shift register 52, horizontal switching transistors 53 and 54, and horizontal scanning line selecting circuit 58. Signals for two lines are supplied to an adding circuit 61 for addition and to a subtracting circuit 62 for subtraction. The outputs of the adding circuit 61 and subtracting circuit 62 after being level-set by a level setter 59 are summed up by an adding circuit 63.

2. 发明专利

JPS57101809A AUTOMATIC FOCUSING SYSTEM 失效
公开(公告)号：JPS57101809A
公开(公告)日：1982-06-24
申请号：JP17819580
申请日：1980-12-17
申请人： HITACHI ELECTRONICS
发明人： TANAKA SHIYUUHEI , YAMAMOTO MANABU , HIRANO MUTSUFUSA
IPC分类号： G02B7/28 , H04N5/232
摘要： PURPOSE:To focus the main image pickup plane automatically with simple and inexpensive constitution by providing the main and subimage pickup planes on the optical path of an image optical system, and controlling the image forming optical system by the output corresponding to the sharpness on the subimage pickup plane. CONSTITUTION:The video of an object is projected to the main image pickup plane disposed on the same plane and the subimage pickup planes 8a, 8b disposed at the front focus and the rear focus by means of a beam splitter inserted into the optical path of an image forming optical system. The outputs from the planes 8a, 8b are separated by a gate circuit 21 operated synchronously with scanning. The signals (a), (b) thereof are inputted to a comparator 2a via differentiating circuits 22a, 22b, integral networks 23a, 23b, and peak holding circuits 24a, 24b. Both inputs are compared in a comparator 25, and a motor 26 driving an image pickup lens is controlled by the differential output corresponding to the deviation from the focusing. Thereby, the main image pickup plane is automatically focused with the simple and inexpensive constitution.

3. 发明专利

JPS5860708A IMAGE PICKUP DEVICE FOR AUTOFOCUSING MICROSCOPE 失效
公开(公告)号：JPS5860708A
公开(公告)日：1983-04-11
申请号：JP15879281
申请日：1981-10-07
申请人： HITACHI ELECTRONICS
发明人： YAMAMOTO MANABU , TANAKA SHIYUUHEI , HIRANO MUTSUFUSA
IPC分类号： G03B13/36 , G02B7/36 , G02B21/00 , G02B21/24 , H04N5/232
摘要： PURPOSE:To automate the focusing operation and to focus a microscope image pickup device quickly and accurately, by comparing image definition signals in different positions of a barrel to control the movement of the barrel relative to a sample supporting table. CONSTITUTION:A microscope barrel 4 which falls up to the lowermost position for a sample supporting table 2 is allowed to rise by a barrel driving device 13. Current and just preceding definition detection signals due to a TV camera 7 for image pickup and a definition detector 8 which are mounted on the barrel 4 are stored in storage devices 9 and 10 in accordance with this rise, and they are compared in a comparator 11. The barrel 4 is allowed to rise till the time point when the comparison result is inverted through a controller 12 which is operated in accordance with the comparison result, and thus, autofocusing is performed. By this automatic focusing operation, the microscope image pickup device is focused guickly and accurately.

4. 发明专利

JPS55109234A PRODUCTION OF GLASS TUBING 失效
公开(公告)号：JPS55109234A
公开(公告)日：1980-08-22
申请号：JP1334479
申请日：1979-02-09
申请人： HITACHI LTD
发明人： IMOTO KATSUYUKI , TANAKA MITSUO , HIRANO MUTSUFUSA
IPC分类号： C03B15/14
摘要： PURPOSE:To produce a glass tubing having excellent shape dimension, by inserting a hollow glass tubing into a glass melt and withdrawing the tubing while passing a gas along both the inside and outside peripheries of the formed tubing. CONSTITUTION:A hollow glass tubing 4 is moved downward in the direction of an arrow 5' and inserted into a glass melt 2 contained in a crucible 1. While passing a gas from a gas supply device 6 through the tubing 4 in the direction of arrows 16, 16', and at the same time, passing a gas via a gas flow controller 13 along the outside periphery of the tubing 4 from the direction of an arrow 7 to directions of 7', 7'', the tubing 4 is withdrawn in the direction of an arrow 5, forming a glass tubing 9 at the lowest end 8 of the tubing 4. The outside and inside diameters of the tubing 9 are controlled by detecting the outside diameter (OD) of the tubing 9 in the course of withdrawal by a non-contact type OD detector 11, displaying the detected value on an OD measuring device 12, and at the same time, transmitting the value to a control circuit 14 as an input, comparing the input with a signal 20 corresponding to a predetermined level of OD value, and transmitting a difference signal as feedbacks to a controller 15 which controls the withdrawal velocity of the tubing 4 and to the controller 13 which controls a gas flow rate.

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