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31. 发明专利

JPH0327082B2 失效
公开(公告)号：JPH0327082B2
公开(公告)日：1991-04-12
申请号：JP22261083
申请日：1983-11-25
申请人： CANON KK
发明人： BABA TAKESHI , SERIZAWA TAKASHI , USUI MASAYUKI , IMATAKI HIROYUKI , NOSE HIROYASU
IPC分类号： G02B3/12 , G02B3/00 , G02B3/14 , G02B26/08 , G02B27/40

32. 发明专利

JPH02219658A LIQUID FIXED QUANTITY DISCHARGER 失效
公开(公告)号：JPH02219658A
公开(公告)日：1990-09-03
申请号：JP4129489
申请日：1989-02-21
申请人： CANON KK , CANON PRECISION INC
发明人： KONNO SHIGEO , BABA TAKESHI
IPC分类号： B41J2/175
摘要： PURPOSE:To enable clogging of a filter to be easily removed by a method wherein a change-over valve is attached to each of a path supplying liquid to a sub tank, a path feeding washing liquid, a path feeding the washing liquid through a liquid discharging means, and a path connecting a drainage part. CONSTITUTION:In the case where an apparatus is washed, a first path 1 is intercepted by closing a change-over valve 5 to make washing liquid be not mixed in a main tank 13. Then, change-over valve 6, 7 on a washing liquid tank 15 interconnecting side are opened, and lastly a change-over valve 8 on a drainage pump 14 interconnecting side is opened to suck the washing liquid into a sub tank 9 with a suction pump through a second path 2 and a third path 3. Consequently the washing liquid from the second path 2 flows to a downstream side of the sub tank 9, and flows to an upstream side through a filter 10. Besides the washing liquid from the third path 3 flows into a nozzle 11 via adhesion pad 16 and further flows to the upstream side from the downstream side of the sub tank 9 through the filter 10. Therefore, a lamp or the like of ink being the principal cause for clogging by sticking to the upstream side of the filter 10 can be effectively removed and the apparatus can be easily washed.

33. 发明专利

JPS63127217A FOCUS DETECTING DEVICE 失效
公开(公告)号：JPS63127217A
公开(公告)日：1988-05-31
申请号：JP27298086
申请日：1986-11-18
申请人： CANON KK
发明人： BABA TAKESHI , YOSHII MINORU , NIWA YUKICHI
IPC分类号： G02B7/36 , H04N5/232
摘要： PURPOSE:To execute focusing at a high speed and with high accuracy to any object, irrespective of the brightness and the contrast, by calculating a non-focusing quantity from a ratio of detected high frequency components at the time of a different image forming state. CONSTITUTION:The intensity p(epsilon) of a high frequency component of an image of an object is detected through an image pickup element 2, a gate 3, a BPF 4, a detecting circuit 5, an A/D converter 6, etc., and stored in a register of a microprocessor 10, and the processor 10 calculates a high frequency component intensity ratio p(epsilon1)/p(epsilon2) based on an equation I which depends on only an image forming state of a different image forming state. Simultaneously, the processor 10 determines a difference DELTA of blur circle diameters epsilon1, epsilon2 of an optical system based on an equation II from a lens position and an F-number in each coupling state from a photographing optical system. Subsequently, from the equation I, II, the circle diameters epsilon1, epsilon2 are derived and a non-focusing quantity delta is calculated, based on an equation III, and while evaluating the non-focusing quantity delta, the focusing adjustment is executed at a high speed and with high accuracy to any object, irrespective of the brightness and the contrast. In the equation, M(kx, ky) denotes a known MTF function of the photographing optical system.

34. 发明专利

JPS6394213A AUTOMATIC FOCUSING DEVICE 失效
公开(公告)号：JPS6394213A
公开(公告)日：1988-04-25
申请号：JP23978686
申请日：1986-10-08
申请人： CANON KK
发明人： BABA TAKESHI , NIWA YUKICHI
IPC分类号： G02B7/28 , G03B13/36 , H04N5/232
摘要： PURPOSE:To accurately focus a photographing optical system on an object by detecting the position of an image forming element detecting the peak value of a high frequency component of an image signal and changing a detecting area in accordance with the detected position. CONSTITUTION:A peak position detecting circuit 46 latches a value held in a counter 45 at the time of detecting a peak based on a peak detecting signal 39 generated by a peak detecting circuit 38 at the time of the detection and sends the latched value to a microprocessor 42. The microprocessor 42 reads a peak value P (the output of an A/D converter 40) and a peak position A (the output of the circuit 46) at the time of ending vertical scanning in each screen, controls a motor driving circuit 49 in a peak value increasing direction and commands a gate control circuit to change the passage period, i.e. the detecting area, of a gate circuit 32 in accordance with the positional change of the peak position A. Since the detecting area is tracked in accordance with the movement of the peak position, the succeeding detecting area can be limited to a narrow area and operation for the decision of focusing and focusing control can be rapidly executed.

35. 发明专利

JPS62267713A FOCUSING DETECTING DEVICE 失效
公开(公告)号：JPS62267713A
公开(公告)日：1987-11-20
申请号：JP11054486
申请日：1986-05-16
申请人： CANON KK
发明人： YOSHII MINORU , BABA TAKESHI , NIWA YUKICHI
IPC分类号： H04N5/232 , G02B7/28 , G02B7/36 , G03B3/00 , G03B13/36
摘要： PURPOSE:To prevent malfunctions in the lens driving direction in a state of severe out-of-focus, by judging the driving direction of a lens by using the degree of focusing of the outside of a distance measuring area. CONSTITUTION:A microcomputer 7 detects the degree of focusing PF in a distance measuring area in accordance with the output of a peak detecting circuit 61 and decides whether or not the degree of focusing PF is smaller than a prescribed lower-limit threshold q2. In a largely out-of-focus state, the computer 7 detects the degree of focusing PE of the outside of the distance measuring area in accordance with the output of another peak detecting circuit 62 and compares the detected values PF and PE with each other. When PE>PF, the microcomputer 7 moves a lens 1 in its extension direction through a driving circuit 8 and actuator 9. In cases other than PE>PF, the lens 1 is moved in its drawing-in direction. In the other state, the microcomputer 7 performs direction discrimination and drive by utilizing slight vibration of the lens.

36. 发明专利

JPS62223722A LIGHT MODULATION ELEMENT MATERIAL 失效
公开(公告)号：JPS62223722A
公开(公告)日：1987-10-01
申请号：JP6698386
申请日：1986-03-25
申请人： CANON KK
发明人： OKUDA MASAHIRO , KUSHIBIKI NOBUO , BABA TAKESHI
IPC分类号： C08L83/04 , G02F1/01
摘要： PURPOSE:To obtain the titled material capable of changing the transmission strength of light due to a temp. change by mixing transparent fine particles to polysiloxane. CONSTITUTION:The titled material is composed of a composite material mixed with the transparent fine particles to the polysiloxane. A polymer shown by the formula or a copolymer composed of >=2 kinds of constituting units shown by the formula is preferably used as the polysiloxane. In the formula, R1 and R2 are each phenyl or methyl group or hydrogen atom, (n) is an integer of >=40. The transparent fine particle is preferably exemplified with SiO2, glass, alumina or a fine particle of a polymer. Thus, the titled element capable of changing the transmission strength of the light due to the temp. change and usable for the inexpensive light modulation element having a large area is obtd.

37. 发明专利

JPS61196215A FOCUS DETECTING DEVICE 失效
公开(公告)号：JPS61196215A
公开(公告)日：1986-08-30
申请号：JP3676985
申请日：1985-02-26
申请人： CANON KK
发明人： BABA TAKESHI , SUDA SHIGEYUKI
IPC分类号： G02B7/36 , G03B3/00 , G03B13/36 , H04N5/232
摘要： PURPOSE:To prevent variation in focus when a body passes in front of an object by providing a means which varying an image forming state for a time (t) shorter than a time T at intervals of the time T and holding the image forming state constant for a time T-t. CONSTITUTION:The container 15 made of a ring-shaped piezoelectric element contracts in right-left paper surface directions according to a voltage outputted by a voltage generating circuit 8, and elastic bodies 3 and 4 deform by being pressed to vary the shape of the surface of the elastic body 3 in the opening plate 5, so that a variable refracting power element 2 varies in refracting power and its extent of variation in refracting power is controlled with a control signal Q supplied to the voltage generating circuit 8. For the purpose, the refract ing power of the variable refracting power element 2 is varied with the control signal Q to vary the image forming state of an object image on an image pickup element 9. In this case, the image forming state is varied for the time (t) shorter than the time T at intervals of the time T, thereby holding the image forming state constant for the time T-t.

38. 发明专利

JPS60151610A OPTICAL ELEMENT 失效
公开(公告)号：JPS60151610A
公开(公告)日：1985-08-09
申请号：JP794984
申请日：1984-01-19
申请人： CANON KK
发明人： USUI MASAYUKI , BABA TAKESHI , MATSUOKA KAZUHIKO , MINOURA KAZUO , SOMEYA ATSUSHI
IPC分类号： G02B27/09 , G02B27/28
摘要： PURPOSE:To obtain projection luminous flux having a necessary intensity distribution by splitting incident luminous flux in its oscillation surface, and then superposing split pieces of luminous flux spatially. CONSTITUTION:When linear or circular polarized incident luminous flux 9 is incident, for example, only the S-polarized component is reflected upward vertically through the operation of a polarization beam splitter 1 and the reflected luminous flux 10 is converted into circular polarized light when passing through a quarter-wavelength plate 3 and incident on a right-angled prism 4. The incident luminous flux is directed downward vertically in the right-angled prism 4. The circular polarized luminous flux directed downward vertically is converted by the quarter-wavelength plate 3 into linear polarized light, which is converged by a cylindrical lens 8 and projected linearly on a surface 12. Horizontal luminous flux passed through a cemented surface 2 as to the incident luminous flux 9 passes through a quarter-wavelength plate 5 and a right-angled prism 7 with a ridge line 6, and then the quarter-wavelength plate 5 again, and is all reflected downward vertically by the cemented surface 2 and converged linearly on the surface 12 by the cylindrical lens 8.

39. 发明专利

JPS60120330A OPTICAL MODULATING ELEMENT 失效
公开(公告)号：JPS60120330A
公开(公告)日：1985-06-27
申请号：JP22838883
申请日：1983-12-05
申请人： CANON KK
发明人： MATSUOKA KAZUHIKO , MINOURA KAZUO , USUI MASAYUKI , SOMEYA ATSUSHI , BABA TAKESHI , NISHIMURA YUKIO , MOCHIZUKI YUUKO
IPC分类号： G02F1/05 , G02F1/01 , G02F1/03 , G02F1/19
摘要： PURPOSE:To perform modulation with good S/N by providing a medium which causes a physical change by contacting closely one of reflecting films of two reflecting surfaces arranged at some angle and a medium which causes a physical change at least one place on the other surface. CONSTITUTION:Insulating layers 21a and 21b provided with heating resistors 22a and 22b, metallic reflecting films 23a and 23b, heat-effect media 24a and 24b, and transparent protection films 25a and 25b are laminated to constitute optical modulation parts 30a and 30b which are controllable independently of each other. The modulation parts 30a and 30b are supported on a support base 20 at an angle theta. Incident light 32 shown by an arrow is reflected twice by the surfaces 23b and 23a when not modulated to obtain projection light 33, and the angle phi between the light 32 and light 33 is 2theta. When at least one of the heating bodies 22a and 22b is heated, the heat-effect media vary in refractive index corresponding to the heating part and the projection light 33 changes the direction. Consequently, unmodulated light and modulated light are separated easily to improve the S/N. The physical change is made by utilizing electric field application, the generation of air bubbles, etc., in addition to the heating.

40. 发明专利

JPS60120302A OPTICAL ELEMENT 失效
公开(公告)号：JPS60120302A
公开(公告)日：1985-06-27
申请号：JP22869383
申请日：1983-12-02
申请人： CANON KK
发明人： SERIZAWA TAKASHI , IMATAKI HIROYUKI , USUI MASAYUKI , BABA TAKESHI , NOSE HIROYASU
IPC分类号： G02B3/12 , G02B3/00 , G02B3/14 , G02B26/08
摘要： PURPOSE:To obtain a variable focus lens of simple constitution which varies in focal length greatly by composing the lens of an elastic body and a member with an opening which deforms the optical surface by projecting or sinking the elastic body and varies in opening shape. CONSTITUTION:The optical element consists of a cylindrical container 1 having the circular opening part 2, the transparent elastic body 3, and an optically transparent parallel flat plate 4 which is a movable part for applying pressure to the elastic body. Whe pressure is applied to the elastic body 3 through the movable part 4, part of the elastic body projects from the opening part 2 in a convex lens shape according to the applied pressure. When negative pressure is applied to the elastic body 3 through the movable part 4, the elastic body 3 forms a concave lens at the opening part 2. Further, the opening plate 2' having the opening part 2 varies the shape of the opening part 2, aso constitution similar to stops for cameras is obtained.

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