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.

公开(公告)号：DE69611563T2

公开(公告)日：2001-06-21

申请号：DE69611563

申请日：1996-02-13

Applicant: IBM

Inventor： CHIU GEORGE L ,  CIPPOLA THOMAS M ,  DOANY FUAD E ,  DOVE DEREK B ,  ROSENBLUTH ALAN E ,  SINGH RAMA N ,  WILCZYNSKI JANUSZ S

IPC: G02F1/13 ,  G02F1/1335 ,  G03B21/00 ,  H04N5/74 ,  H04N9/31

Abstract: An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. The system includes a quarter wave plate positioned to suppress stray reflection from the projection lens. The system also includes a second quarter wave plate disposed on the screen and a polarizing film disposed on the second quarter wave plate to suppress ambient light from illuminating the screen and entering the system.