WO1999040470A1 - Observation and mirroring device - Google Patents
Observation and mirroring device Download PDFInfo
- Publication number
- WO1999040470A1 WO1999040470A1 PCT/DE1999/000341 DE9900341W WO9940470A1 WO 1999040470 A1 WO1999040470 A1 WO 1999040470A1 DE 9900341 W DE9900341 W DE 9900341W WO 9940470 A1 WO9940470 A1 WO 9940470A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plane
- optical system
- curvature
- cutting
- line
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/10—Mirrors with curved faces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
Definitions
- the invention relates to a viewing or reflecting device according to the preamble of claim 1.
- Generic insight and reflection devices are used, for example, as head-up displays (HUD's) or home-mounted displays (HMD's).
- HUD's head-up displays
- HMD's home-mounted displays
- such devices are used to display information or images from an LCD, a CRT, a slide or the like in the viewing window of helmets, such as those worn by pilots.
- the generic devices are attached to or in the area of a head helmet.
- the devices known from the above-mentioned documents have an optical system, the beam path of which is folded at least once by a mirror, and the at least one has non-planar mirrors on which the beam path strikes at a non-zero angle of incidence.
- HUD's head-up displays
- HMD's head-mounted displays
- the conventionally available optical elements have the disadvantage that - even in a tilted position - the image errors that occur, such as astigmatism, can only be corrected inadequately.
- the optical system has an element with a surface which is symmetrical to a plane and which has no rotational symmetry, and along a first section line with a first plane a meridional radius of curvature decreasing or increasing along and along same cutting line has a sagittal radius of curvature that decreases or increases in one direction.
- the surface according to the invention is shaped such that both the meridional and sagittal radii of curvature change along a line of intersection of the surface with one plane. This creates a surface that offers much wider options for image correction, especially with decentered asymmetrical optics, than conventional, mostly symmetrical or even circularly symmetrical mirror or prism elements.
- the first intersection line can be described by a quadratic equation, by a third degree curve or by a cubic spline.
- the variables a, b, c, and d are adapted in the sense of an optimal error correction; in the case of the cubic spline function, this adjustment is made in sections.
- a line of intersection results from this adaptation - 4 -
- Curvature the meridional or tangential surface curvature, varies along the cutting line.
- the course of the sagittal radius of curvature along the first section line can be described by a linear function of the height, a power series or a cubic spline. This opens up possibilities for the surface also in the sagittal direction, i.e. to be designed to be variable perpendicular to the first cutting line and to correct image errors more than is possible, for example, with a toroidal mirror or lens element.
- second cutting lines of the surface are circular with second cutting planes perpendicular to the first cutting plane.
- the second cutting lines are conic sections or power series of the shape
- the second cut lines are represented by cubic splines.
- the first plane is a plane of symmetry of the surface. While conventional optical elements often have two or infinitely many levels of symmetry, the surface of the optical element according to the invention is only symmetrical with respect to the first level (without restricting the general inventive concept) and is therefore particularly suitable for use in decentered asymmetrical optics.
- the optical element is a mirror or a lens element. In this way, the desired correction of the aberrations can be achieved with materials which have proven themselves and are inexpensive.
- optical system it is also possible for the optical system to contain folding mirrors. They are used to shorten the beam path and adapt it to the geometry of the head helmet.
- the surface of the element shown in the figure is symmetrical with respect to the yz plane in which it runs along the section line A.
- the intersection lines B show the course of the surface parallel to the xz plane at different heights y.
- the surface shown corresponds to a conventional surface, for example, a surface section of a torus, which is upright from the right against the y-axis. In contrast to conventional surfaces, however, it has both different meridional and different sagittal curvatures along section line A:
- the surface normal on the surface F (x, y, z) 0 has only one z component; and the origin of the surface lies within the free diameter used.
- the surfaces according to the invention of this type are not rotationally symmetrical, they are only symmetrical about a single plane.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53987299A JP2001523357A (en) | 1998-02-06 | 1999-02-08 | Surveillance or reflection equipment |
DE19980198T DE19980198D2 (en) | 1998-02-06 | 1999-02-08 | Insight or reflection device |
IL13214299A IL132142A0 (en) | 1998-02-06 | 1999-02-08 | Observation or mirroring device |
EP99911590A EP1047973A1 (en) | 1998-02-06 | 1999-02-08 | Observation and mirroring device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19804780 | 1998-02-06 | ||
DE19809711.5 | 1998-03-06 | ||
DE19809711A DE19809711C1 (en) | 1998-02-06 | 1998-03-06 | Optical viewing device for head-up display or helmet-mounted display e.g. for aircraft pilot |
DE19804780.0 | 1998-03-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999040470A1 true WO1999040470A1 (en) | 1999-08-12 |
Family
ID=26043660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/000341 WO1999040470A1 (en) | 1998-02-06 | 1999-02-08 | Observation and mirroring device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1047973A1 (en) |
JP (1) | JP2001523357A (en) |
DE (1) | DE19980198D2 (en) |
IL (1) | IL132142A0 (en) |
WO (1) | WO1999040470A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107949804A (en) * | 2015-09-03 | 2018-04-20 | 3M创新有限公司 | Optical system |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3697154A (en) * | 1971-05-12 | 1972-10-10 | Us Navy | Optical viewing system |
US3923370A (en) * | 1974-10-15 | 1975-12-02 | Honeywell Inc | Head mounted displays |
EP0269259A1 (en) * | 1986-10-27 | 1988-06-01 | KAISER AEROSPACE & ELECTRONICS CORPORATION | Headgear mounted display visor |
EP0286066A2 (en) * | 1987-04-10 | 1988-10-12 | Hitachi, Ltd. | Optical scanning apparatus |
WO1989003059A2 (en) * | 1987-09-18 | 1989-04-06 | Flight Dynamics, Inc. | Automobile head-up display system |
WO1993001611A1 (en) * | 1991-07-03 | 1993-01-21 | Shatz Narkis E I | Method and apparatus for non-imaging concentration and projection of electromagnetic radiation |
US5214540A (en) * | 1991-01-14 | 1993-05-25 | Yoram Yakimovsky | Curved mirror optical systems |
EP0596729A2 (en) * | 1992-11-05 | 1994-05-11 | Hughes Aircraft Company | Virtual image instrument panel display |
US5341242A (en) * | 1991-09-05 | 1994-08-23 | Elbit Ltd. | Helmet mounted display |
US5576887A (en) * | 1995-06-22 | 1996-11-19 | Honeywell Inc. | Head gear display system using off-axis image sources |
-
1999
- 1999-02-08 IL IL13214299A patent/IL132142A0/en unknown
- 1999-02-08 JP JP53987299A patent/JP2001523357A/en not_active Ceased
- 1999-02-08 EP EP99911590A patent/EP1047973A1/en not_active Withdrawn
- 1999-02-08 WO PCT/DE1999/000341 patent/WO1999040470A1/en not_active Application Discontinuation
- 1999-02-08 DE DE19980198T patent/DE19980198D2/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3697154A (en) * | 1971-05-12 | 1972-10-10 | Us Navy | Optical viewing system |
US3923370A (en) * | 1974-10-15 | 1975-12-02 | Honeywell Inc | Head mounted displays |
EP0269259A1 (en) * | 1986-10-27 | 1988-06-01 | KAISER AEROSPACE & ELECTRONICS CORPORATION | Headgear mounted display visor |
EP0286066A2 (en) * | 1987-04-10 | 1988-10-12 | Hitachi, Ltd. | Optical scanning apparatus |
WO1989003059A2 (en) * | 1987-09-18 | 1989-04-06 | Flight Dynamics, Inc. | Automobile head-up display system |
US5214540A (en) * | 1991-01-14 | 1993-05-25 | Yoram Yakimovsky | Curved mirror optical systems |
WO1993001611A1 (en) * | 1991-07-03 | 1993-01-21 | Shatz Narkis E I | Method and apparatus for non-imaging concentration and projection of electromagnetic radiation |
US5341242A (en) * | 1991-09-05 | 1994-08-23 | Elbit Ltd. | Helmet mounted display |
EP0596729A2 (en) * | 1992-11-05 | 1994-05-11 | Hughes Aircraft Company | Virtual image instrument panel display |
US5576887A (en) * | 1995-06-22 | 1996-11-19 | Honeywell Inc. | Head gear display system using off-axis image sources |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107949804A (en) * | 2015-09-03 | 2018-04-20 | 3M创新有限公司 | Optical system |
US11325330B2 (en) | 2015-09-03 | 2022-05-10 | 3M Innovative Properties Company | Optical system |
US11787137B2 (en) | 2015-09-03 | 2023-10-17 | 3M Innovative Properties Company | Optical system |
Also Published As
Publication number | Publication date |
---|---|
DE19980198D2 (en) | 2000-02-10 |
EP1047973A1 (en) | 2000-11-02 |
IL132142A0 (en) | 2001-03-19 |
JP2001523357A (en) | 2001-11-20 |
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