Claims
- 1. A head mounted image display apparatus comprising:
- first image display means directing a first image toward a user of the image display apparatus;
- second image display means directing a second image toward the user of the image display apparatus;
- display blackout means active to control a selected one of said first or second image display means to display a black image surface according to engagement thereof;
- display control means operable such that, when said display blackout means is engaged, one of said first and second image display means which does not display said black surface image is active to display a test pattern;
- first adjusting means for adjusting an optical condition of said first image display means; and
- second adjusting means for adjusting an optical condition of said second display means.
- 2. A head mounted image display apparatus as set forth in claim 1, wherein said display blackout means comprises black image generating means active to supply a black image signal to a selected one of said first and second image display means.
- 3. A head mounted image display apparatus as set forth in claim 1, wherein said display blackout means comprises a first blackout switch engagable for causing said first image display means to display said black image surface and a second blackout switch engagable for causing said second image display means to display said black image surface, and wherein said display control means is further operable such that, when both of said first and second blackout switches are engaged, a test pattern is displayed on both of said first and second image display means.
- 4. A head mounted image display apparatus as set forth in claim 1, further comprising:
- first adjusting means for individually adjusting a focus of the first image directed toward the user by said first image display means; and
- second adjusting means for individually adjusting the focus of the second image directed toward the user by said second image display means.
- 5. A head-mounted image display apparatus comprising:
- left image display means;
- right image display means;
- left audio output means;
- right audio output means;
- a surround audio circuit selectively operable to process audio data supplied to said left and right audio output means; and
- further including calibration means comprising:
- left and right calibration buttons operable such that, when said left calibration button is depressed, said left image display means displays a black surface image and said right image display means displays a test pattern and, when said right calibration button is depressed said right image display means displays a black surface image and said left image display means displays a test pattern;
- left adjusting means for adjusting an optical condition of said left image display means; and
- right adjusting means for adjusting an optical condition of said right image display means.
- 6. A head mounted image display apparatus as set forth in claim 5, further including three dimensional image detecting means operable such that, when three dimensional image data supplied to said left and right image display means is detected, an output of said three dimensional image detecting means is active to engage said surround audio circuit.
- 7. A head mounted image display apparatus as set forth in claim 5, wherein said left and right audio output means comprises left and right earphones.
- 8. A head mounted image display apparatus as set forth in claim 5, wherein said calibration buttons are provided on focusing sliders provided for focusing said image display means.
- 9. A head mounted image display apparatus comprising:
- left image display means;
- right image display means;
- left audio output means;
- right audio output means;
- a surround audio circuit selectively operable to process audio data supplied to said left and right audio output means;
- a calibration switch, said calibration switch having a first side position, a second center position, and a third side position and being operable such that, in said second position thereof calibration operation is not engaged and a normal image viewing mode is adopted, at said first side position said left image display means is controlled so as to display a black surface image and said right image display means is controlled so as to display a test pattern and, at said third side position said right image display means is controlled so as to display a black surface image and said left image display means is controlled so as to display a test pattern; and
- adjusting means for adjusting an optical condition of said first image display means and an optical condition of said second image display means, respectively.
- 10. A head mounted image display apparatus as set forth in claim 9, further including image processing means switchable between a first display mode in which a common video signal is supplied to each of said left and right image display means and a second display mode in which consecutive fields of a three dimensional image signal are supplied alternately to said left and right image display means respectively.
- 11. A head mounted image display apparatus as set forth in claim 10, further including manual switching means provided on an outer portion of said head-mounted image display apparatus for manually selecting between said first display mode and said second display mode.
- 12. A head mounted image display apparatus comprising:
- a frame having a first stem and a second stem attached thereto for positioning the display apparatus on a user's head;
- means for generating a test pattern image;
- a first optical display system positioned within said frame in a first line of sight of the user, said optical display system providing a first visual image to the user;
- a second optical display system positioned within said frame in a second line of sight of the user, said optical display system providing a second visual image to the user;
- blackout means operatively coupled to said first optical display system and to said second optical display system for selectively blacking out at least one of said first visual image and said second visual image; and
- first adjusting means for adjusting said first optical display system;
- second adjusting means for adjusting said second display system; and
- at least one mechanical switch means provided on said frame which is operable to select between at least a first mode and a second mode, said first mode being a mode in which said blackout means blacks out said second visual image and said generating means provides said test pattern image to said first optical display system, and said second mode being a mode in which said blackout means blacks out said first visual image and said generating means provides said test pattern image to said second optical display system.
- 13. The head mounted image display apparatus of claim 12, wherein said at least one mechanical switch means consists of a first depressible operating member and a second depressible operating member, the display apparatus operating in said first mode when said first operating member is depressed and operating in said second mode when said second operating member is depressed.
- 14. The head mounted image display apparatus of claim 12, wherein said at least one mechanical switch means comprises a single calibration switch movable among one of three positions consisting of a first position corresponding to said first mode, a second position corresponding to said second mode, and a third position corresponding to normal operation.
- 15. The head mounted image display apparatus of claim 12, wherein said first optical display system and said second optical display system are both focus adjustable with respect to the user, whereby said first mode facilitates focus adjustment of said first optical display system and said second mode facilitates focus adjustment of said second optical display system.
- 16. The head mounted image display apparatus of claim 15, further comprising a first focus adjustment member and a second focus adjustment member, said first focus adjustment member being operable to adjust the focus of said first optical display system, and said second focus adjustment member being operable to adjust the focus said second optical display system.
- 17. The head mounted image display apparatus of claim 16, wherein said at least one mechanical switch means consists of a first depressible operating member positioned on said first focus adjustment member and a second depressible operating member positioned on said second focus adjustment member, the display apparatus operating in said first mode when said first operating member is depressed and operating in said second mode when said second operating member is depressed.
- 18. The head mounted image display apparatus of claim 15, wherein each said first optical display system and said second optical display system include a LCD and a lens positioned along a common optical axis, said lens focusing an image displayed on said LCD, either of said LCD or said lens being movable along said optical axis to adjust the focus of the image with respect to the user.
- 19. The head mounted image display apparatus of claim 12, wherein said first optical display system and said second optical display system are separated from each other by a variable distance, said variable distance being adjusted by at least one adjustment knob.
- 20. The head mounted image display apparatus of claim 18, wherein said first optical display system and said second optical display system are separated from each other by a variable distance, said variable distance being adjusted by at least one adjustment knob.
- 21. The head mounted image display apparatus of claim 12, wherein said at least one mechanical switch selects among said first mode, said second mode and a third mode, said third mode being a mode in which said generating means provides said test pattern image to both said first optical display system and said second optical display system.
- 22. The head mounted image display apparatus of claim 12, wherein said generating means includes a microcomputer, a character generator and a superimpose circuit, said test pattern image being generated by said character generator and imposed on at least one said first visual image or said second visual image with said superimpose circuit according to control signals supplied from said microcomputer, said microcomputer generating said control signal on the basis of the operation of said mechanical switch means.
- 23. The head mounted image display apparatus of claim 18, further comprising a backlight which illuminates each LCD, wherein said LCD of said first optical display system provides said first image according to driving signals supplied from a first driving circuit, and said LCD of said first optical display system provides said first image according to driving signals supplied from a second driving circuit.
- 24. The head mounted image display apparatus of claim 12, further comprising at least one audio output device connected to the apparatus for providing audio signals to the user.
- 25. The head mounted image display apparatus of claim 24, wherein said at least one audio output device comprises a pair of audio headphones operatively coupled to a surround sound circuit.
- 26. The head mounted image display apparatus of claim 25, further comprising means for providing a three dimensional image to said first optical display system and said second optical display system.
- 27. A head mounted image display apparatus comprising:
- first image display means directing a first image toward a first eye of a user of the image display apparatus;
- first manual adjustment means for adjusting the first image produced by said first image display means;
- second image display means directing a second image toward a second eye of the user of the image display apparatus;
- second manual adjustment means for adjusting the second image produced by said second image display means;
- a first display blackout means responsive to a first control signal for controlling said first image display means to display a black image and for controlling said second image display means to display a predetermined test pattern and enable adjustment of the second image using said second image display means; and
- a second display blackout means responsive to a second control signal for controlling said second image display means to display a black image and for controlling said first image display means to display the predetermined test pattern and enable adjustment of the first image using said first image display means.
- 28. A head mounted image display apparatus as set forth in claim 27, further comprising means responsive to simultaneous generation of said first and second control signals to cause both of said first and second image display means to simultaneously display the predetermined test pattern.
- 29. A head mounted image display apparatus as set forth in claim 27, further comprising mode control means for switching image generating circuitry between a two dimensional image generation mode and a three dimensional image generating mode.
- 30. A head mounted image display apparatus as set forth in claim 29, wherein said mode control means is responsive to a signal produced by manual manipulation of a manually manipulable member.
- 31. A head mounted image display apparatus as set forth in claim 29, wherein said mode control means is responsive to a signal which is included in an incoming video signal.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4-289200 |
Oct 1992 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/135,352 filed Oct. 13, 1993, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (5)
Number |
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0454443 |
Oct 1991 |
EPX |
0551781 |
Jul 1993 |
EPX |
0 592 318 A2 |
Apr 1994 |
EPX |
2647290 |
Nov 1990 |
FRX |
3256836 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
135352 |
Oct 1993 |
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