公开(公告)号：JP2002116409A

公开(公告)日：2002-04-19

申请号：JP2001210583

申请日：2001-07-11

Applicant: IBM

Inventor： BUDD RUSSEL A ,  DOVE DEREK B ,  LOVAS ISTVAN ,  OYLHA ROBERT S ,  POWELL CARL G

IPC: G02B5/04 ,  G02B1/10 ,  G02B5/10 ,  G02B5/30 ,  G02B17/08 ,  G02B27/00 ,  G02B27/01 ,  G02B27/02 ,  H04N5/64

Abstract: PROBLEM TO BE SOLVED: To provide a compact head mounted virtual image display unit in which an optical system equipped with a distinct see-through function is incorporated. SOLUTION: The optical system includes a microminiaturized display device, a beam split prism, a field lens, a diverging lens, a reflecting lens and a 1/4 wavelength plate. A picture signal linearly polarized by following the microminiaturized display device passes through the field lens and the diverging lens (a), is made incident on the beam split prism and passes through the polarization plane thereof (b), passes through the 1/4 wavelength plate and is circularly polarized (c), is reflected on the surface of the reflecting lens and passes through the 1/4 wavelength plate again, and in linearly polarized in a polarization direction rotated by 90 deg. with an original linear polarization direction related to the picture signal as reference (d), and is made incident on the beam split prism again, reflected on the polarization plane thereof and emitted from the beam split prism as seen by a user (e).

公开(公告)号：CA2349650A1

公开(公告)日：2002-01-27

申请号：CA2349650

申请日：2001-06-01

Applicant: IBM

Inventor： POWELL CARL G ,  OLYHA ROBERT S JR ,  LOVAS ISTVAN ,  DOVE DEREK B ,  BUDD RUSSEL A

IPC: G02B5/04 ,  G02B1/10 ,  G02B5/10 ,  G02B5/30 ,  G02B17/08 ,  G02B27/00 ,  G02B27/01 ,  G02B27/02 ,  H04N5/64 ,  G02B27/18

Abstract: A head mounted virtual image display unit is provided which is compact in si ze and weight, and incorporates a high performance optical system offering a clear see- through capability. A sliding light shield may be incorporated for those instances when see-through capability is not desired. A focus adjustment may be incorporated to permit the focusing of the image, fo r example, at a distance of approximately 18 inches to infinity. An adjustable headband may be incorporated that adapts to fit the users head. A flexible boom structure may be incorporated to facilitate fine positional adjustment of the optical assembly. A slider and ball joint mechanism may al so be incorporated to facilitate positional adjustment of the optical assembly. A built-in microphone may be incorporated to enable speech input by the user. The head mounted virtual image display unit may be used comfortably in conjunction with eye or safety glasses, and provides a useful image to the user without blocking his view of the surrounding environment. The unit is design ed to have a pleasing appearance so as to greatly enhance user acceptability.

公开(公告)号：CA2349650C

公开(公告)日：2007-08-21

申请号：CA2349650

申请日：2001-06-01

Applicant: IBM

Inventor： LOVAS ISTVAN ,  POWELL CARL G ,  OLYHA ROBERT S JR ,  BUDD RUSSEL A ,  DOVE DEREK B

IPC: G02B5/04 ,  G02B27/01 ,  G02B1/10 ,  G02B5/10 ,  G02B5/30 ,  G02B17/08 ,  G02B27/00 ,  G02B27/02 ,  G02B27/18 ,  H04N5/64

Abstract: A head mounted virtual image display unit is provided which is compact in si ze and weight, and incorporates a high performance optical system offering a clear see- through capability. A sliding light shield may be incorporated for those instances when see-through capability is not desired. A focus adjustment may be incorporated to permit the focusing of the image, fo r example, at a distance of approximately 18 inches to infinity. An adjustable headband may be incorporated that adapts to fit the users head. A flexible boom structure may be incorporated to facilitate fine positional adjustment of the optical assembly. A slider and ball joint mechanism may al so be incorporated to facilitate positional adjustment of the optical assembly. A built-in microphone may be incorporated to enable speech input by the user. The head mounted virtual image display unit may be used comfortably in conjunction with eye or safety glasses, and provides a useful image to the user without blocking his view of the surrounding environment. The unit is design ed to have a pleasing appearance so as to greatly enhance user acceptability.

公开(公告)号：DE60118846T2

公开(公告)日：2006-11-09

申请号：DE60118846

申请日：2001-02-15

Applicant: IBM

Inventor： BUDD RUSSEL A ,  DOVE DEREK B ,  LOVAS ISTVAN ,  OYLHA ROBERT S ,  POWELL CARL G

IPC: G02B5/04 ,  G02B27/01 ,  G02B1/10 ,  G02B5/10 ,  G02B5/30 ,  G02B17/08 ,  G02B27/00 ,  G02B27/02 ,  H04N5/64

Abstract: A head mounted virtual image display unit is provided which is compact in size and weight, and incorporates a high performance optical system offering a clear see-through capability. A sliding light shield may be incorporated for those instances when see-through capability is not desired. A focus adjustment may be incorporated to permit the focusing of the image, for example, at a distance of approximately 18 inches to infinity. An adjustable headband may be incorporated that adapts to fit the users head. A flexible boom (200) structure may be incorporated to facilitate fine positional adjustment of the optical assembly. A slider and ball joint mechanism may also be incorporated to facilitate positional adjustment of the optical assembly. A built-in microphone may be incorporated to enable speech input by the user. The head mounted virtual image display unit may be used comfortably in conjunction with eye or safety glasses, and provides a useful image to the user without blocking his view of the surrounding environment. The unit is designed to have a pleasing appearance so as to greatly enhance user acceptability.

公开(公告)号：DE60118846D1

公开(公告)日：2006-05-24

申请号：DE60118846

申请日：2001-02-15

Applicant: IBM

Inventor： BUDD RUSSEL A ,  DOVE DEREK B ,  LOVAS ISTVAN ,  OYLHA ROBERT S ,  POWELL CARL G

IPC: G02B5/04 ,  G02B27/01 ,  G02B1/10 ,  G02B5/10 ,  G02B5/30 ,  G02B17/08 ,  G02B27/00 ,  G02B27/02 ,  H04N5/64

Abstract: A head mounted virtual image display unit is provided which is compact in size and weight, and incorporates a high performance optical system offering a clear see-through capability. A sliding light shield may be incorporated for those instances when see-through capability is not desired. A focus adjustment may be incorporated to permit the focusing of the image, for example, at a distance of approximately 18 inches to infinity. An adjustable headband may be incorporated that adapts to fit the users head. A flexible boom (200) structure may be incorporated to facilitate fine positional adjustment of the optical assembly. A slider and ball joint mechanism may also be incorporated to facilitate positional adjustment of the optical assembly. A built-in microphone may be incorporated to enable speech input by the user. The head mounted virtual image display unit may be used comfortably in conjunction with eye or safety glasses, and provides a useful image to the user without blocking his view of the surrounding environment. The unit is designed to have a pleasing appearance so as to greatly enhance user acceptability.