DE6910516U - OPTICAL DEVICE - Google Patents

Description

WESTLICHE 31 (AM LEOPOLDPLATZ) TEL .. (07231) 24290

Barr & Stroud Ltd «, Glasgow (Scotland)

"Optical device"

The innovation relates to an optical device that can be used either as a monocular or binocular telescope or as a camera.

To solve this problem, the device of the innovation has two reflection prisms that absorb the object light, which can optionally be adjusted against each other so that the light is either in only one eyepiece or in both eyepieces or into one eyepiece and the camera.

The prisms are preferably rhomboid prisms that displaceable in relation to one another in mutually parallel and perpendicular vertical planes to the optical axis of incidence are, the closer to the object prism is provided with a beam splitter plane, which together with a The plane of reflection of the other prism is centered on the main optical axis.

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The drawing shows "for example schematically and partially in section a preferred embodiment of the innovation and although is:

Jig, 1: the optical system of the invention when used in a photographic camera. The location of the prism planes is indicated by its longitudinal center line.

Fig. 2 is a front view of the apparatus of Figure 1 seen in the direction of the arrow A in Fig 1. The prisms _e are drawn as phantoms in verschiednnen positions..

Fig. 3 shows a section according to line 0 * 0 _e of FIG 1 illustrating the rotating mechanism for one of the prisms and

FIG. 4: a view of the arrangement according to FIG. 3 as seen in FIG Direction of arrow B in Fig. 3. The figure shows the coupling mechanism between prism and eyepiece

In the drawing, two approximately identical rhomboid prisms 1 and 2 are seated one behind the other in the viewing direction one reflecting surface each centered on the optical axis. For binocular use of the device, the Prisms pushed down from the optical axis in parallel vertical planes at right angles to the optical axis

That of the optical axis between the second reflection surface and the angle formed by the vertical plane is essentially the same for the two prisms. If you look in the direction of arrow A, prism 1 is on the left and prism 2 is on the right. The first reflective surface 3 of the prism 2 has a transmission / reflection ratio of about 70/30 and serves as a beam splitter. The second reflection surface 4-des Prism 2 and both surfaces 5 and 6 of prism 1 are almost 100% reflective.

The eyepiece, which is composed of several lenses, is to the reflection axis of the floor reflection surfaces of each prism centered so that a left 12nd tied a right eyepiece 7 8 develop.

The Prisaa 1 assigned to the right eyepiece 7 sits in ice? Fit 9, which can be rotated about the main optical axis 0-0 via a pin 10. The pin 10 carries a pinion 11, that came with a gear 12 on the main drive shaft 13 The drive 13 is arranged to the left of the main optical axis and can be rotated by hand by means of the lever 14. As a result, the socket with the prism 1 can generally be a full two positions determined by a device described below.

The socket 15 for the right eyepiece 7 sits »fc aa ei;

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Carrier 16, which around the pin 10, i.e. also around the optical Main axis can be rotated.

A pinion 17 on the carrier 16 meshes with the gear 18, which is provided with an externally rotatable lever 26 which is arranged below the right eyepiece 7 on the right is.

A pin 29 is arranged on the center line of the socket 9 near its end. This is axially parallel to pin 10 and touches it. A leaf spring 27 presses a roller 28 against the pin 29. The axis of the roller 28 is parallel to the axis of the pin 10 on the same horizontal plane as this "The socket 9 has two stable layers" In one it encloses it with its prism 1 at the top in a circle with the main optical axis. In the other position below. If the socket 9 is in the last-mentioned position, a stop 30 abuts the carrier 16 and defines it this location.

The prism 2 assigned to the left eyepiece sits in a mount 19, which is arranged on a quadrant 20 and around the central axis of the left eyepiece 8, which is parallel to the main optical axis, is rotatable. The quadrant 20 is in mesh with a second drive shaft 21 which is arranged under the left eyepiece 8 and can be rotated by hand via a lever 22.

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The right eyepiece 7 also includes additional lenses 23 which are usually outside the light path. You can can optionally be pushed into the light path *

The camera 24 is arranged above the main optical axis. It does not have the usual lenses. The axis of the lens opening 25 is parallel to the main optical axis.

With binocular use, the light from the object first falls on the first reflective surface 3 of the prism 2. 70% of the The light then reaches the first reflective surface 5 of the prism 1, which throws all of the light that hits it through the reflective surface 6 of the prism 1 into the right eyepiece 7. the the remaining 30% of the light coming from the object is generated by ■ the reflective surface 3 of the prism 2 thrown onto the reflective surface 4-, which all light hitting them to the left Eyepiece 8 feeds.

If the main drive shaft 13 is in the position in which the socket 9 touches the carrier 16 assigned to the right eyepiece 7 rotates when the lever is actuated 26 the eyepiece 7 and the associated prism 1 together around the main optical axis 0-0 «In this way, a Focus of the image can be achieved «

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Soil the system will be used for photographic purposes, so the main drive shaft 13 is rotated in the opposite direction, the fit 9 moves away from the carrier 16 and rotates the right eyepiece assigned prism 1 independently of this in the iig. 1 position shown. The axis of the lens 25 of the camera 24 then coincides with the reflection axis P-P of the reflection surface 6 of this prism. The the Light hitting prism 1 is deflected upwards and thrown from the reflective surface 6 into a camera 24. That from In contrast, light reflected from prism 2 is reflected into the left eyepiece 8 as before. The eyepiece 8, anyway less light than the camera receives, can be used as a viewfinder.

We recommend using the system as a monocular in low light. The one assigned to the eyepiece 8 To convert to a monocular, prism 2 is rotated out of the main optical axis by means of lever 22. Everything Available light from the object thus reaches the right eyepiece 7ο Instead of focusing the amount of light again to produce which was lost when the prism 2 was unscrewed, the additional lenses 23 are switched on.

The drive devices for the prism 2 on the one hand and the lenses 23 on the other hand can also be coupled, see above that one part automatically replaces the other.

Claims (9)

»III» II · · • t 11. · »I I III - JlI I III> II •! ■ •• I It I 'DR. RUDOLF BAUER · DIPL.-ING. HELMUT HUBBUCH PAT E N TA N WÄLT E 753 PFORZHEIM. I / Re WESTLICHE 31 (AM LEOPOLDPLATZ) TEL .. (O7231) 2420O Protection claims: 1. Optionally convertible into a monocular or binocular telescope or a photographic camera Optical device, characterized by two reflective prisms (1, 2) which pick up the object light and which can optionally be adjusted in relation to one another so that the light either enters only one eyepiece (7) or both eyepieces (7, 8) or into one eyepiece (7 ) and the camera (24). 2. Apparatus according to claim 1, characterized by rhomboid prisms (1, 2) which are parallel to each other and to optical axis of incidence (P-P) perpendicular vertical planes mutually displaceable Bind, which is closer to the Object-located prism (2) with a street-splitter plane (5) is provided, which together with a reflection plane (5) of the other prism (1) on the main optical axis (0-0) is centric. 3. Device according to Anepruch 2, characterized in that the one prism (1) around the main optical axis (0-0) is rotatable " J »ti · * ■ 4 ·. Device after, buckets of the previous one characterized that on the socket (9) dft * mas (1) near its end a pin (29) is arranged £ * & * alt whose help it (9) together with the pritema (1) la * «a & stable positions the main optical axis (0-0) can be rotated 5 · Device according to spoke 3 or 4, thereby gekeanseicaaet _v that the socket (9) of the prism (1) sits on a pin (10) lying in the main optical axis (0-0), the carries a pinion (11) that came with a gear (13), which is on a drive shaft (13) lying parallel to the optical axis (0-0) and rotatable from the outside via a hand lever (14) sits. 6. Apparatus according to any one of claims 3-59, characterized in that the socket (15) for one of the Both eyepieces (7) are seated on a carrier (16) which is rotated around the pin (10), i.e. around the optical axis (0-0) can be by placing a pinion (17) on the carrier (16) with eiae Gear (18) meshes, which can be rotated by a hand lever (26). 7. Device according to one of claims 3 to 6, characterized in that that the camera (24) receives its light from the prism (1) when the prism (1) in one of the I (III both of the above-mentioned locations. 8. Device according to one of claims 2-7, characterized in that one of the eyepieces (8) with additionally switchable lenses (23) is provided). si 9. Apparatus according to claim 8, characterized in that the other prism (2) is provided with a quadrant (20) around the axis of the associated eyepiece (8) is pivotable and engages in a gear sector (21) which by means of a hand lever (22) about a to the eyepiece axis parallel axis is pivotable.