公开(公告)号：DE69321425D1

公开(公告)日：1998-11-12

申请号：DE69321425

申请日：1993-07-30

Applicant: CANON KK

Inventor： MORISHIMA HIDEKI ,  MATSUMURA SUSUMU ,  TANIGUCHI NAOSATO ,  YOSHINAGA YOKO ,  KOBAYASHI SHIN ,  SUDO TOSHIYUKI ,  KANEKO TADASHI

IPC: G02B5/32 ,  G02B27/00 ,  G02B27/01 ,  G02B27/02

Abstract: This invention relates to an image display apparatus capable of displaying a high-definition image. An image display apparatus of this invention is characterized in that light beams from a plurality of image display elements (1) are displayed as continuous single image information via a hologram optical element (2). An image display apparatus of this invention is characterized by including a plurality of image display elements respectively assigned to different partial image information regions of an image to be displayed, and a hologram optical element for diffracting a plurality of light beams from the plurality of image display elements, and displaying the diffracted light beams as continuous single image information. An image display apparatus is also characterized by including a plurality of image display elements, each of the image display elements having a large number of pixels, and a hologram optical element for forming a synthesized image by diffracting a plurality of image light beams from the image display elements, wherein the hologram optical element diffracts the plurality of image light beams so as to display a synthesized image by interpolating information between pixels of a plurality of images to be synthesized.

公开(公告)号：DE69128067T2

公开(公告)日：1998-03-19

申请号：DE69128067

申请日：1991-11-26

Applicant: CANON KK

Inventor： YAMAGUCHI EIJI ,  MATSUMURA SUSUMU ,  HOSHI HIROAKI ,  YAMAMOTO MASAKUNI ,  MORISHIMA HIDEKI

IPC: G11B11/10 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/125 ,  G11B11/105

Abstract: An optical information recording/reproducing apparatus is disclosed. The apparatus is provided with a device for irradiating a preheating light beam onto an information track of an optical information recording medium. Simultaneously, a recording/reproducing light beam is irradiated onto a light spot of the preheating light beam on the recording medium. The light intensity of the preheating light beam is varied in accordance with a detection result regarding an environmental temperature of the apparatus obtained by the detector. By such the construction, the recording/reproducing condition of information is kept constant irrespective of the environmental temperature.

公开(公告)号：DE69126160T2

公开(公告)日：1997-10-09

申请号：DE69126160

申请日：1991-03-15

Applicant: CANON KK

Inventor： MATSUMURA SUSUMU ,  YAMAMOTO MASAKUNI ,  YAMAGUCHI EIJI ,  HOSHI HIROAKI ,  MORISHIMA HIDEKI

IPC: G11B7/005 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00 ,  G11B7/08 ,  G11B7/09 ,  G11B11/10

Abstract: An apparatus for recording and reproducing information on and from optical or opto-magnetic information recording media is disclosed. The apparatus comprises irradiation means (1) for irradiating a light beam polarized in a predetermined direction to an opto-magnetic recording medium (6,7), application means for applying a predetermined magnetic field to the recording medium, optical means for condensing the light beam obtained through the recording medium, and detection means (11) for detecting the light beam condensed by the optical means (10), the detection means having an effective light receiving surface almost equal to the airy disk size determined by resolving power of the optical means. The apparatus precisely detects edges of information magnetic domains by using the S-polarized component produced by the optomagnetic recording medium under the magnetic Kerr effect.

公开(公告)号：DE69214364T2

公开(公告)日：1997-04-03

申请号：DE69214364

申请日：1992-07-17

Applicant: CANON KK

Inventor： YOSHINAGA YOKO ,  KOBAYASHI SHIN ,  MATSUMURA SUSUMU ,  TANIGUCHI NAOSATO ,  SUDOH TOSHIYUKI ,  MORISHIMA HIDEKI

IPC: G03F7/00 ,  G03F7/029

公开(公告)号：JPH09318911A

公开(公告)日：1997-12-12

申请号：JP15496896

申请日：1996-05-27

Applicant: CANON KK

Inventor： INOGUCHI KAZUTAKA ,  MORISHIMA HIDEKI ,  NOSE HIROYASU

IPC: G02B27/22 ,  H04N13/04

Abstract: PROBLEM TO BE SOLVED: To switch and display a three-dimensional image and a two-dimensional image and to display without resolution deterioration at the time of two-dimensional image display by adjusting the interval of a light source means and a micro optical element in accordance with an image displayed on a display device. SOLUTION: A control part emits a changeover signal or the like for a mode so as to display the two-dimensional image to a lenticular moving circuit 7, and moves the second lenticular lens 32 of the micro optical element 3H from a position where it is closely stuck to a mask 2 to the position where it is separated by a specified distance in the optical axis direction of a cylindrical lens. Then, an image processing means 5 does not perform the synthetic processing of a stripe image, so that a normal two-dimensional image is displayed on the display device 4. Thus, light passing each picture element on an image display surface advances in both right and left directions toward scanning lines respectively displaying horizontal stripe picture elements Li and Ri at the time of three-dimensional image display, and is led to both eyes, so that all picture elements of the two-dimensional image are viewed.

公开(公告)号：JPH0973049A

公开(公告)日：1997-03-18

申请号：JP11571896

申请日：1996-04-12

Applicant: CANON KK

Inventor： INOGUCHI KAZUTAKA ,  TANIGUCHI TAKASATO ,  HOSHI HIROAKI ,  SUDO TOSHIYUKI ,  MORISHIMA HIDEKI

IPC: G02B27/22 ,  H04N13/00 ,  H04N13/04

Abstract: PROBLEM TO BE SOLVED: To make a brightness of each part of an image to be constant in the case of displaying when three dimensional partial image and two dimension partial image coexist, by controlling the brightness of each part of the image by a light quantity adjustment means according to the number of visual points. SOLUTION: A visual points detection part 8 detects, from the inputted or synthesized image data, whether a partial image is two dimensional (the number of visual points 1) or three dimensional, and how many number of visual points it has in the case of a three dimensional image. The visual points detection part 8 outputs detected each information on the number of visual points to a first image processing part 9 in parallel with each image data. Also, each information on the number of visual points is outputted to the light quantity adjustment circuit 6. The first image processing part 9 properly arranges two or more image data, and forms image information for one screen, and sends it to LCD1 driving circuit 5, and displays a synthesized image on a display for LCD1. Optical amount adjustment circuit 6 controls an emitted light quantity of each division area of a back light 3, based on window area designation information and information on the number of visual points.

公开(公告)号：JPH08240786A

公开(公告)日：1996-09-17

申请号：JP6695195

申请日：1995-03-01

Applicant: CANON KK

Inventor： NANBA NORIHIRO ,  MORISHIMA HIDEKI ,  AKIYAMA KENJI ,  TANAKA TSUNEFUMI

IPC: G02B23/04 ,  G02B27/00 ,  G02B27/01 ,  G02B27/02

Abstract: PURPOSE: To obtain more highly accurate display device despite the wide angle of view or the normal angle of view by connecting and synthesizing a display picture displayed on plural picture display means in an observation optical system. CONSTITUTION: As to the observation optical system concerning the picture display means 11 and 12; an eye piece lens 51 is used in common on an eye point side from reflecting surfaces 21 and 22. The length of an optical path from the planar reflecting surface 21 to the lens 51 is different from the length of the optical path from the planar reflecting surface 22 to the lens 51, the length of the optical path of main light emitted from the center of the display screens of the means 11 and 12 from the display screens to the surfaces 21 and 22 is changed and the length of the optical path from the means 11 and 12 to the lens 51 is aligned. Consequently, the luminous fluxes emitted from the means 11 and 12 are synthesized on the optical path after the surfaces 21 and 22, and an observer connects two display pictures of the means 11 and 12, so that the virtual image 4 of a synthesized picture can be observed.

公开(公告)号：JPH06342128A

公开(公告)日：1994-12-13

申请号：JP15423193

申请日：1993-06-01

Applicant: CANON KK

Inventor： TANIGUCHI NASOSATO ,  KANEKO TADASHI ,  MORISHIMA HIDEKI ,  SUDO TOSHIYUKI ,  YOSHINAGA YOKO ,  KOBAYASHI SHIN ,  MATSUMURA SUSUMU

IPC: G02B5/32 ,  G02B27/00 ,  G02B27/01 ,  G02B27/02 ,  G02B27/22 ,  G03H1/26 ,  H04N5/74

Abstract: PURPOSE:To provide a picture display device which is small in size, and light in weight, which can perform display on a large screen and which does not have crosstalk with respect to right and left eyes; and a stereoscopic picture display method and a picture display device in which 'screen effect' is not caused or reduced. CONSTITUTION:As to the picture display device; when a picture displayed on a picture display unit 2 is displayed as virtual images to an observer by a hologram lens 4, a hologram lens 4 has at least two kinds of optical power respectively corresponding to the right and left eyes 5 and 6 of the observer, the picture displayed on the picture display unit 2 is independently displayed to the respective right and left eyes 5 and 6 by superimposing and forming plural interference fringes on a part where effective luminous fluxes for the right and left eyes are superimposed on the hologram lens 4; and as to the stereoscopic picture display device displaying plural pictures having parallax on the respective right and left eyes 5 and 6 of the observer; a position in the depth direction of the picture displayed to the observer is temporally changed to be displayed or simultaneously displayed.

公开(公告)号：JPH06202037A

公开(公告)日：1994-07-22

申请号：JP34868692

申请日：1992-12-28

Applicant: CANON KK

Inventor： TANIGUCHI TAKASATO ,  MORISHIMA HIDEKI ,  SUDO TOSHIYUKI ,  KANEKO TADASHI ,  MATSUMURA SUSUMU ,  YOSHINAGA YOKO ,  KOBAYASHI TATSU

IPC: G02B5/18 ,  G02B5/32 ,  G02B27/02

Abstract: PURPOSE:To make the edge of a virtual image which is offensive to the eye and observe an excellent image by gradually decreasing the diffraction efficiency of element holograms forming the peripheral part of a hologram as compared with the diffraction efficiency of element holograms forming the center part. CONSTITUTION:The diffraction efficiency of the element holograms which form the peripheral part of a hologram lens array is gradually decreased as compared with the diffraction efficiency of the element holograms forming the center part consisting of a specified area. The luminous flux emitted by a light source 1 is made into a nearly parallel luminous flux by a lamp house 2 to light a liquid crystal display element 3. The luminous flux given image information by the liquid crystal display element 3 is given astigmatism and a comatic aberration by a relay lens system 4 and made incident on the hologram lenses 6 formed on a transparent substrate 5. The luminous flux made incident on the hologram lenses 6 generate aberrations opposite in sign to the aberrations given by the relay lens system 4, so the luminous flux becomes a nearly parallel luminous flux having the aberrations excellent compensated and is made incident on the pupil 7 of an observer.

公开(公告)号：JPH05346508A

公开(公告)日：1993-12-27

申请号：JP17940792

申请日：1992-06-12

Applicant: CANON KK

Inventor： TANIGUCHI TAKASATO ,  MORISHIMA HIDEKI ,  SUDO TOSHIYUKI ,  YOSHINAGA YOKO ,  KOBAYASHI TATSU ,  MATSUMURA SUSUMU

IPC: G02B5/32 ,  G02B27/02 ,  G02B27/10 ,  G03H1/00

Abstract: PURPOSE:To observe image information from an image display unit and other image information spatially one over the other in a wide observation visual field with uniform brightness by properly setting the element hylogram size of a hologram lens array. CONSTITUTION:The hologram lens 3 is divided into plural element holograms 31-33, whose element hologram lens sizes are so determined that the N.As(numerical aperture) of the element holograms 31-33 are equal to one another. Then the off-axis type hologram lens array 3 has the element hologram 31 which meets the Bragg conditions to luminous flux 4, which is reflected and diffracted by only the element hologram 31 and made incident on the pupil 1 of an observer. The observer observes the image information at a point F1a on a display surface 5 as a virtual image based upon the luminous flux 4a which is diverged from a point F1a in front of the hologram lens array 3. Similarly, pieces of luminous flux emitted from image information at points F2 and F3 on the display surface 5 are reflected and diffracted by only the element holograms 32 and 33 toward the pupil 1 of the observer.