CA1245492A - System for incorporating additional information in the optical path of a telescope - Google Patents
System for incorporating additional information in the optical path of a telescopeInfo
- Publication number
- CA1245492A CA1245492A CA000451528A CA451528A CA1245492A CA 1245492 A CA1245492 A CA 1245492A CA 000451528 A CA000451528 A CA 000451528A CA 451528 A CA451528 A CA 451528A CA 1245492 A CA1245492 A CA 1245492A
- Authority
- CA
- Canada
- Prior art keywords
- slide
- optical path
- prism
- film strip
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
- G02B23/10—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors reflecting into the field of view additional indications, e.g. from collimator
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A system for superimposing information on the optical path of a telescope is described. A slide or film strip containing a map sector and angle information is carried in a holder out of the optical path. An arm containing optics can he swung into and out of the optical path to transmit the image contained on the slide or film strip to the optical path as desired.
Rotation of the image can be achieved in one embodiment by means of a thumb-wheel connected to the slide holder whereby the slide itself can be rotated.
In another embodiment rotation of an optical prism assembly forming part of the optics is used to achieve image rotation. Another thumb-wheel is used for that.
A system for superimposing information on the optical path of a telescope is described. A slide or film strip containing a map sector and angle information is carried in a holder out of the optical path. An arm containing optics can he swung into and out of the optical path to transmit the image contained on the slide or film strip to the optical path as desired.
Rotation of the image can be achieved in one embodiment by means of a thumb-wheel connected to the slide holder whereby the slide itself can be rotated.
In another embodiment rotation of an optical prism assembly forming part of the optics is used to achieve image rotation. Another thumb-wheel is used for that.
Description
2735~-3 The preseilt invcntion relates to a system for displaying addi-tional informatioll in the optical path of a telescope.
A telescope having a compass bui]t into its top surface is familiar from German utility patent 7 907 058, sa.id compass incorporating a scale card in the form of a rhumb card in place of the conventional needle, said compass card consi.sting, at least in i.ts outermost areas, of a transparent or translucent materi.al. The image of this scale card is incorporated in the optical path of the telescope by the use of special optics. Thus the person using the telescope obtains simultaneous information on the direction in which he is viewing. Ilowcver, over and above this it is often desired to have a specifically associated map section incorporated in the correct position in each instance.
~or this reason it is the aim of the present inventioi~ to create a device for incorporating correctly oriented map sections.
I~ccording to a broad aspect of the present invention, there is provided a system for incorporating i.nformation regarding direction in the optical path of a telescope, comprising means for holding a slide or film strip outside the optical path of the telescope, the slide or film strip containing a map sector with angle information, means for illuminating the slide or film strip from behind, an arm containing optical means, the arm being movable be-tween a front position in which an image of the slide or film strip is super-imposed on the optical path of the telescope and a second position in which said image is removed -~rom said optical path, and means for rotating said image manllally .
I`he slide or film strip itself may be rotated using a thumb-wheel to achieve the :;mage rotation or a prism forming part of the optical means may be adapted for rotation using another thumb-wheel to achieve the :i.mage rotcltion.
- 1 - .
The present invention will now be described in greater detail on the basis of an exemplary version shown in the accompanying drawings, in which:
Figure l is a perspective view of an auxiliary device having a pivotable arm that can be swung into the optical path of a telescope;
Figure 2 is a diagram showing details of the optical system o-E
the inventive device.
In certain situations, for example, when sailing or flying, it is extremely difficult, if not impossible, to use a map in th~ usual manner.
It is in such cases that a map sector, continued on a slide or film strip 10 that can be illuminated from behind by an illuminating system 11, is extremely useful. In addition, the slide 10 contains angle information from which the particular associated points of the compass can be read off. As described in greater detail below, a prism assembly 17 can be rotated by means of a thumb-wheel 32 and thus the map sector can be oriented to the particular sigh-ting direction for the viewer, if necessary also by a reflected compass. Alter-natively, slide 10 with the map sector can be rotated by means of a thumb-wheel 12 and thus matched to the direction of viewing registered by the compass.
Thumb-wheel 12 is shown in Figure 2 although it should be realised that both thumb-wheel 12 and thumb-wheel 32 would not usually be present on the same embodiment.
Since, in many cases, it would be undesirable were such map sectors always incorporated in the field of view, the incorporation of the map sector contained on the slide 10 takes place by means of an arm 13 that can be swung into the optical path of the telescope; said arm can also be swung clear of the field of view if it is not desired to view the map slide 10. In such a case, the telescope can be used as a normal instrument. The arm 13 can be held by form-locking or force-fit detent means ~not shown) in different positions.
The deflection of the image -rays f-rom the map slide or film strip 10, respectively, takes place through a deflector prism 15 incorporated in the pivoting arm 13, said deflector prism 15 being of trapezoidal shape. A lens system 16 is provided at the reflection (exit) side of the pivoting arm 13Z
i.e., adjacent to the deflection prism 15, from where the slide 10 is re-presented to infinity and incorporated into the optical path 14 of the tele-scope.
Furthermore, in order to arrive at the smallest possible leng-th and at the same time permit rotation of the map sector, a Pechan prism assembl~
17 consisting of two prisms 18, 19, is installed ahead of the deflection prism 15. Of course, it is possible to use other prisms that are similar to the Pechan prism. In addition, the slide 10 can boe rotated mechanically and the Pechan or similar prisms dispensed with.
The image rays from the slide or film strip 10, respectively, pass through the incidence plane 20 that is substantially perpendicular to the optical axis, are deflected on a line of separa-tion 22 between the -two prisms 18 and 19 that is inclined substantially at an angle of 45 to the optical axis, and after several deflections the image rays pass through the line of separation 22 between the two prisrms 18 and 19. After repeated deflections within the second prism 19 the image rays leave the prism assembly 17 through the reflecting plane 21 that is perpendicular to the optical axis, from where they enter the deflection prism 15, on the exit side of which the lens system 16 is arranged.
By rotating the prism assembly 17 about the optical axis the image of the map sector, which is incorporated in the optical path, is rotated for the viewer.
If i-t is desired to include the map sector, the pivoting arm 13 is first swung into the optical path 1~ of the -telescope where it enters into detent means (not shown) and is loc~ed in this position. The viewer can if necessary establish the sighting direction by using the already familiar reflected scale disc of a built-in compass or by using other familiar means.
The map sector is now rotated Eor the viewer with the help of the thumb-wheel 32 so that it appears correctly oriented iTI the user's field of view; this can be verified on the basis of the angle information of the map sector. Tf this is done, the sighting direction and the alignment of the map sector will co-lU incide. The user of the telescope thus has a direct connection be-tween map section and direction of sight, which considerably simplifies orientation.
Alternatively, as indicated above, the map sector can be rotated using thumb-wheel 12 instead of th~mlb-wheel 32.
There is no need for the laborious folding of maps that is so frequently a problem, particularly in windy conditions.
The film strip may be contained in a cassette and advanced as desired longitudinally in the cassette.
A telescope having a compass bui]t into its top surface is familiar from German utility patent 7 907 058, sa.id compass incorporating a scale card in the form of a rhumb card in place of the conventional needle, said compass card consi.sting, at least in i.ts outermost areas, of a transparent or translucent materi.al. The image of this scale card is incorporated in the optical path of the telescope by the use of special optics. Thus the person using the telescope obtains simultaneous information on the direction in which he is viewing. Ilowcver, over and above this it is often desired to have a specifically associated map section incorporated in the correct position in each instance.
~or this reason it is the aim of the present inventioi~ to create a device for incorporating correctly oriented map sections.
I~ccording to a broad aspect of the present invention, there is provided a system for incorporating i.nformation regarding direction in the optical path of a telescope, comprising means for holding a slide or film strip outside the optical path of the telescope, the slide or film strip containing a map sector with angle information, means for illuminating the slide or film strip from behind, an arm containing optical means, the arm being movable be-tween a front position in which an image of the slide or film strip is super-imposed on the optical path of the telescope and a second position in which said image is removed -~rom said optical path, and means for rotating said image manllally .
I`he slide or film strip itself may be rotated using a thumb-wheel to achieve the :;mage rotation or a prism forming part of the optical means may be adapted for rotation using another thumb-wheel to achieve the :i.mage rotcltion.
- 1 - .
The present invention will now be described in greater detail on the basis of an exemplary version shown in the accompanying drawings, in which:
Figure l is a perspective view of an auxiliary device having a pivotable arm that can be swung into the optical path of a telescope;
Figure 2 is a diagram showing details of the optical system o-E
the inventive device.
In certain situations, for example, when sailing or flying, it is extremely difficult, if not impossible, to use a map in th~ usual manner.
It is in such cases that a map sector, continued on a slide or film strip 10 that can be illuminated from behind by an illuminating system 11, is extremely useful. In addition, the slide 10 contains angle information from which the particular associated points of the compass can be read off. As described in greater detail below, a prism assembly 17 can be rotated by means of a thumb-wheel 32 and thus the map sector can be oriented to the particular sigh-ting direction for the viewer, if necessary also by a reflected compass. Alter-natively, slide 10 with the map sector can be rotated by means of a thumb-wheel 12 and thus matched to the direction of viewing registered by the compass.
Thumb-wheel 12 is shown in Figure 2 although it should be realised that both thumb-wheel 12 and thumb-wheel 32 would not usually be present on the same embodiment.
Since, in many cases, it would be undesirable were such map sectors always incorporated in the field of view, the incorporation of the map sector contained on the slide 10 takes place by means of an arm 13 that can be swung into the optical path of the telescope; said arm can also be swung clear of the field of view if it is not desired to view the map slide 10. In such a case, the telescope can be used as a normal instrument. The arm 13 can be held by form-locking or force-fit detent means ~not shown) in different positions.
The deflection of the image -rays f-rom the map slide or film strip 10, respectively, takes place through a deflector prism 15 incorporated in the pivoting arm 13, said deflector prism 15 being of trapezoidal shape. A lens system 16 is provided at the reflection (exit) side of the pivoting arm 13Z
i.e., adjacent to the deflection prism 15, from where the slide 10 is re-presented to infinity and incorporated into the optical path 14 of the tele-scope.
Furthermore, in order to arrive at the smallest possible leng-th and at the same time permit rotation of the map sector, a Pechan prism assembl~
17 consisting of two prisms 18, 19, is installed ahead of the deflection prism 15. Of course, it is possible to use other prisms that are similar to the Pechan prism. In addition, the slide 10 can boe rotated mechanically and the Pechan or similar prisms dispensed with.
The image rays from the slide or film strip 10, respectively, pass through the incidence plane 20 that is substantially perpendicular to the optical axis, are deflected on a line of separa-tion 22 between the -two prisms 18 and 19 that is inclined substantially at an angle of 45 to the optical axis, and after several deflections the image rays pass through the line of separation 22 between the two prisrms 18 and 19. After repeated deflections within the second prism 19 the image rays leave the prism assembly 17 through the reflecting plane 21 that is perpendicular to the optical axis, from where they enter the deflection prism 15, on the exit side of which the lens system 16 is arranged.
By rotating the prism assembly 17 about the optical axis the image of the map sector, which is incorporated in the optical path, is rotated for the viewer.
If i-t is desired to include the map sector, the pivoting arm 13 is first swung into the optical path 1~ of the -telescope where it enters into detent means (not shown) and is loc~ed in this position. The viewer can if necessary establish the sighting direction by using the already familiar reflected scale disc of a built-in compass or by using other familiar means.
The map sector is now rotated Eor the viewer with the help of the thumb-wheel 32 so that it appears correctly oriented iTI the user's field of view; this can be verified on the basis of the angle information of the map sector. Tf this is done, the sighting direction and the alignment of the map sector will co-lU incide. The user of the telescope thus has a direct connection be-tween map section and direction of sight, which considerably simplifies orientation.
Alternatively, as indicated above, the map sector can be rotated using thumb-wheel 12 instead of th~mlb-wheel 32.
There is no need for the laborious folding of maps that is so frequently a problem, particularly in windy conditions.
The film strip may be contained in a cassette and advanced as desired longitudinally in the cassette.
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A system for incorporating information regarding direction in the optical path of a telescope, comprising means for holding a slide or film strip outside the optical path of the telescope, the slide or film strip containing a map sector with angle information, means for illuminating the slide or film strip from behind, an arm containing optical means, the arm being movable between a first position in which an image of the slide or film strip is superimposed on the optical path of the telescope and a second position in which said image is removed from said optical path, and means for rotating said image manually
2. A system according to claim 1 wherein the means for holding the slide or film strip is manually rotatable whereby rotation of said image is achieved.
3. A system according to claim 2 including a thumb-wheel for effecting said rotation.
4. A system according to claim 1 wherein the optical means includes a prism means which is manually rotatable whereby rotation of said image is achieved.
5. A system according to claim 4 including a thumb-wheel for effecting said rotation.
6. A system according to claim 1, wherein the optical means includes a trapezoidal deflection prism that is trapezoidal in longitudinal section and is adjacent to a lens system in the direction of exit.
7. A system according to claim 6, wherein at the entrance side of the deflection prism in the arm there is a prism assembly that provides for repeated deflection, and has incidence and reflective planes which are parallel to the optical axis.
8. A system according to claim 7, wherein the prism assembly consists of two prisms, the line of separation between which is inclined substantially at an angle of 45° relative to the optical axis.
9. A system according to claim 8, wherein light rays that enter the prism assembly are deflected after entering a first prism of the two prisms on the line of separation that is inclined at 45° to be perpendicular to the optical axis, and after subsequent deflections pass at right angles through the line of separation to the second prism of the two prisms where they are again deflected repeatedly, finally passing through an exit plane in the direction of the optical axis.
10. A system according to claim 1 and 5, wherein the film strip is arranged in a cassette in which it can be moved in its longitudinal direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3313176.7 | 1983-04-08 | ||
| DEP3317350.8-51 | 1983-05-09 | ||
| DE19833317350 DE3317350C1 (en) | 1983-05-09 | 1983-05-09 | Device for reflecting additional information into binoculars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1245492A true CA1245492A (en) | 1988-11-29 |
Family
ID=6198818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000451528A Expired CA1245492A (en) | 1983-04-08 | 1984-04-09 | System for incorporating additional information in the optical path of a telescope |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1245492A (en) |
| DE (1) | DE3317350C1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8815669U1 (en) * | 1988-12-17 | 1989-03-23 | Antzel, Josef-Friedrich, 8901 Adelsried, De | |
| DE4222417C2 (en) * | 1992-07-08 | 1994-06-23 | Swarovski & Co | Binoculars with additional information |
| DE102008003414A1 (en) | 2008-01-08 | 2009-07-09 | Carl Zeiss Sports Optics Gmbh | Binocular binoculars |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB406336A (en) * | 1932-08-23 | 1934-02-23 | Henry Ernest Lloyd Owen | Improvements in or relating to binoculars, monoculars, telescopes and like viewing instruments |
| DE7907058U1 (en) * | 1979-03-14 | 1979-06-21 | Steiner-Optik Gmbh, 8580 Bayreuth | BINOCULARS WITH COMPASS MOUNTED ON ITS TOP |
-
1983
- 1983-05-09 DE DE19833317350 patent/DE3317350C1/en not_active Expired
-
1984
- 1984-04-09 CA CA000451528A patent/CA1245492A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3317350C1 (en) | 1984-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |