JPS5915161Y2 - Image tube adjustment device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an image pickup tube adjustment device for a television camera, and has various drawbacks in conventional devices of this type, such as the complicated and large-scale structure of the device, Alternatively, the drawbacks such as complicated adjustment operations and difficulty in accurate fine adjustment of the image pickup tube can be solved, and the configuration is simple, therefore, it is extremely compact, and the rotation and tracking of the image pickup tube can be made very delicate. For example, it is possible to easily and accurately make adjustments from one direction using a simple tool such as a trunver.The feature is that a part is cut out, and the cutout part A movable barrel is loosely fitted into a fixed barrel that has a pair of ears sandwiching the rim and is fixed in alignment with the optical axis of the optical system, and the movable barrel is rotated about the optical axis. The first adjustment means for sliding the movable tube in the direction along the optical axis, and the second adjustment means for sliding the movable tube in the direction along the optical axis, can each be rotated about an axis perpendicular to the optical axis. The first adjustment means is attached to the ear part of the fixed tube in a manner similar to the above, and the first adjustment means is
When the movable tube is rotated, the movable tube is rotated about the optical axis, and the movable tube is freely allowed to slide along the optical axis. In addition, the second adjustment means slides the movable barrel along the optical axis when the second adjusting means is rotated, and controls the rotation of the movable barrel about the optical axis. are connected to the movable cylinder within the notch of the fixed cylinder through second connecting means that freely allow this, and further, the first and second
operating means for independently operating the adjusting means, that is, the respective operating parts of the first and second adjusting means, or the first and second adjusting means.
The operation section of the only common operation means that can be selectively engaged and detached from the adjustment member of the camera is provided on the side opposite to the camera side lid, and the image pickup tube is fitted into the movable tube. By operating the operating section and rotating the first adjusting means, the movable tube is rotated about the optical axis, thereby adjusting the rotation of the image pickup tube fitted therein. Also, by operating the operating section and rotating the second adjustment means, the movable tube is slid along the optical axis, and the image pickup tube fitted therein is moved. Adjust the tracking, respectively.
It is in making it possible to do it.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, FIG. 1 shows the inside of a small portable television camera that employs an embodiment of the adjustment device according to the present invention, with the camera side lid removed, and 1 is the camera body, 2 is the
0 is the optical axis of the imaging lens attached to the camera body 1; 3 is a color separation prism housed in a prism box formed by the box wall 4 in the camera body 1;
0' is its front axis, 5 is a filter, and 6 is an image pickup tube.

Next, the details of one embodiment of the image pickup tube adjusting device according to the present invention, which is employed in this camera, will be explained with reference to FIGS. 2 to 4.

In these figures, 7 is partially cut away (7a
), the prism has a pair of ears 7b, 7b' sandwiching the notch 7a, and the prism optical axis O' is attached to a part of the prism box wall 4 by means of a screw 8 at the flange 7C. A fixed barrel 9 fixed in alignment with the image pickup tube 6 is a movable barrel that is loosely fitted into the fixed barrel 7 while firmly holding the image pickup tube 6.

Reference numeral 10 denotes a feed rod for rotating the movable cylinder, which is attached to the ears 7 b and 7 b' of the fixed cylinder 7, to its operating part 10 a, and to a stopper 11 fixed to its tail end with a screw 12. The prism is fixed so that it can rotate about an axis perpendicular to the optical axis 0'.

Reference numeral 13 denotes a guide rod 1 which is attached to the ears 7b, 7b' in parallel to the threaded rod 10 according to the threaded lead of the threaded rod 10 as the threaded rod 10 rotates.
A U-shaped feeding member is screwed onto the threaded rod 10 and is screwed onto a flat surface 9a formed on a part of the outer periphery of the movable cylinder 9 so as to move up and down while being guided by the moving cylinder 9. On the stud 15,
Due to this movement, the movable tube 9 is moved to the optical axis 0' via the stud 15.
The stud 15 is engaged in such a manner that it can be rotated around the optical axis O' and that the stud 15 is freely allowed to slide along the optical axis O'.

16 is prevented from being removed by a stopper 19 fixed to the ear portions 7 b and 7 b' of the fixed tube 7 by the operating portion 17 a and a stopper 19 fixed to the tail end thereof by a screw 20, and the optical axis 0' is An eccentric roller for sliding the movable cylinder is fixed by a screw 18 to an operating shaft 17 rotatably attached to an axis perpendicular to the axis. The U-shaped receiver attached to the member 21 is attached to the member 21 according to its rotation and the amount of eccentric lift.
The movable barrel 9 is engaged with the movable barrel 9 via the movable barrel 9 so as to be movable along the optical axis 0'.

23 indicates the completion of adjustment of the image pickup tube 6, and the moving tube 9 is replaced with the fixed tube 7.
The ear portions 7e at both ends of the stop band portion 7d of the fixing tube 9 are tightening screws for fixing the fixing tube 9 to the ear portions 7e.

7e'.

Numeral 24 is a tightening screw for fixing the imaging tube 6 to the movable tube 9, and is screwed into the ears 9c, 9c' at both ends of the stop band portion 9b of the movable tube 9.

Reference numeral 25 denotes an image pickup tube protection ring, which is fixed to the image pickup tube 6 by, for example, adhesion or the like.

Incidentally, when attaching the fixed tube 9 to the prism box wall 4, when the camera side cover (not shown) is opened, as can be understood from FIG.
, the operating section 17a of the operating shaft 17 connected to the eccentric roller 16
and the heads 23a, 24a of the tightening screws 23, 24 are positioned with respect to the box wall 4 so that they uniformly appear outward, that is, are located on the side facing the camera side lid. It is something that

Next, a description will be given of the operation when adjusting the rotation and tracking of the image pickup tube 6 using the adjusting device configured as described above.

First, with the tightening screw 24 on the movable barrel 9 loosened, the image pickup tube 6 is attached to the movable barrel 9 together with the protective ring 25 fixed thereto, and in this state, the screw 24 is rotated to stop it. By tightening the band portion 9b, the image pickup tube 6
is fixed to the movable tube 9.

Next, with the tightening screw 23 in the fixed cylinder 7 loosened, first, the feed screw rod 10 is rotated with a tool such as a screwdriver via its operating portion 10a, and the screw rod 10 The U-shaped feeding member 13 screwed into the
The movable tube 9 moves according to the threaded lead of the threaded rod 10 while being guided by the guide rod 14, thereby driving the stud 15 engaged with the feeding member 13. Therefore, the rotation adjustment of the imaging tube 6 fixed to the movable tube 9 is performed.

When the movable tube 9 rotates, the U-shaped receiver member 21 attached to the movable tube 9 slides on the eccentric roller 16 for sliding the movable tube, and therefore, the movable tube 9 rotates. , optical axis O'
The position along the direction remains unchanged.

Next, the operating shaft 17 is moved through its operating section 17a,
Similarly, when rotated with a tool such as a screwdriver, the eccentric roller 16 attached to the operating shaft 17 rotates together with the eccentric roller 17, thereby causing the U-shaped receiver engaged with the eccentric roller 16 to rotate. Since the member 21 is driven, the movable cylinder 9 is
According to the lift amount of the eccentric roller 16, the prism optical axis 0'
Accordingly, the trunking of the sliding image tube 6 fixed to the movable tube 9 is adjusted.

When the movable tube 9 slides, the stud 15 attached to the movable tube 9 slides inside the U-shaped feeding member 13, so that the rotational angular position of the movable tube 9 remains unchanged. It remains as it is.

After the rotation and tracking adjustments described above are completed, the tightening screw 23 in the fixed barrel 7 is rotated to tighten the stop band portion 7d, so that the image pickup tube 6 is fixed to the fixed barrel 7. become.

According to the first embodiment shown in FIGS. 1 to 4, the rotation of the image pickup tube 6 and the tracking adjustment are performed in the manner described above.

Next, a second embodiment will be described with reference to FIG.

This second embodiment differs from the above-mentioned first embodiment in that, as a mechanism for rotating the movable tube 9, a combination of a wo-com screw and a knife screw that engages with the screw is added.
As a mechanism for sliding the movable cylinder 9, a combination of a pinion gear and a rack plate that meshes with the pinion gear is used, and the parts not particularly explained are completely the same as in the previous embodiment. The same is true.

In the figure, reference numeral 26 denotes a drum-shaped worm for rotating the movable tube, and the prism optical axis 0' is attached to the ears 7b, 7b' of the fixed tube 7.
It is fixed by a screw 28 to an operating shaft 27 which is attached so as to be rotatable about an axis perpendicular to the operating shaft 27 .

Reference numeral 29 denotes a pinion gear for sliding the movable tube, and an operating shaft is also attached to the ears 7b, 7b' of the fixed tube 7 so as to be rotatable about an axis perpendicular to the optical axis 0'. 30 with screws 31.

32 is a knife fixed to the outer circumferential surface of the movable tube 9 by a screw 33 so as to be parallel to the optical axis O';
It is engaged with the thread groove of the worm screw 26.

34 is similarly arranged on the outer circumferential surface of the movable cylinder 9 by means of a screw 35 so that its tooth row is perpendicular to the optical axis O'.
A rack plate is curved and fixed along the outer peripheral surface, and is meshed with the pinion gear 29.

In addition, the operation shafts 27, 30 and the operation parts 27a, 30
As in the above-mentioned embodiment, a is provided so as to be located on the side facing the camera-side lid.

In the above configuration, first, when the operating shaft 27 is rotated by a screwdriver or the like via its operating portion 27a, the drum-shaped worm screw 26 attached to the operating shaft 27 rotates together with the operating shaft 27. As a result, the knife 32 engaged with the tooth groove of the worm screw 26 is driven, so the movable barrel 9 rotates around the prism optical axis O' according to the thread lead of the worm screw 26. forced to, therefore,
As in the case of the above embodiment, rotation adjustment of the image pickup tube 6 is performed.

When the movable tube 9 rotates, the rack plate 34 attached to the movable tube 9 slides along the teeth of the pinion gear 29, and therefore the movable tube 9 moves along the optical axis 0'. The position in the direction remains unchanged.

Next, when the operating shaft 30 is rotated by a screwdriver or the like via its operating portion 30 a, the pinion gear 29 attached to the operating shaft 30 rotates together with the operating shaft 30 . Rack plate 3 engaged with
4 is driven, the movable tube 9 is slid along the optical axis 0', and therefore the tracking adjustment of the image pickup tube 6 is performed.

When the movable tube 9 slides, the knife 32 attached to the movable tube 9 slides within the tooth groove of the worm screw 26, so that the optical axis 0' of the movable tube 9 is centered. The angular position of rotation remains unchanged.

Next, a third embodiment will be described with reference to FIG.

This third embodiment differs from the second embodiment described above in that only one common operation means is provided for the worm screw 26 and the two pinion gears, and will be explained in particular. The parts that are not included are exactly the same as in the first and second embodiments described above.

In the figure, 36 is a small gear integrated with the above-mentioned drum-shaped worm screw 26, and is rotatable around an axis perpendicular to the optical axis O' at the ears 7b, 7b' of the fixed tube 7. It is fixed by a screw 28 to a shaft 27' which is attached in such a manner that

37 is a small gear integrated with the pinion gear 29, which is also attached to the ears 7 b and 7 b' of the fixed barrel 7 so as to be rotatable about an axis perpendicular to the optical axis 0'. It is fixed to the shaft 30' by a screw 31 so as to be offset from the small gear 36.

38, the optical axis 0 is attached to the ears 7 b and 7 b' of the fixed barrel 7.
The operating shaft is attached so that it can both rotate about an axis perpendicular to the axis and slide along the axis, and a spring is fixed to a part of it by a screw 40. It is always biased upward by a resilient spring 41 interposed between the stop 39 and the ear portion 7b'.

42 is a part of the operation shaft 38, and when the operation shaft 38 is biased upward by the spring 41 (the state shown in the figure), it meshes with the small gear 36 that is integrated with the worm gear 26, and the operation When the shaft 38 is slid downward against the spring 41, the pinion gear 29 is a spur gear attached by a screw 43 so as to mesh with a small gear 37 integrated with the pinion gear 29.

Incidentally, the operating portion 38a of the operating shaft 38 is provided so as to be located on the side facing the camera-side lid, as in the above-mentioned embodiment.

In the above configuration, as shown in the figure, the operating shaft 38
is biased upward by the spring 41, and therefore the spur gear 42 attached thereto is in mesh with the small gear 36 on the worm screw 26 side, and the operating shaft 38 is rotated. When the worm screw 26 is rotated by a screwdriver or the like through the section 38, the rotation is transmitted to the worm screw 26 through the spur gear 42 and the small gear 36, so that the worm screw 26 rotates. As in the case of the second embodiment, the movable tube 9 rotates around the optical axis 0', and rotation adjustment of the image pickup tube 6 is performed.

Further, by pushing the operating shaft 38 against the spring 41, the spur gear 42 attached thereto is separated from the pinion 36 on the worm screw 26 side, and this time, the pinion gear 42 on the pinion gear 29 side is removed. When the operating shaft 38 is rotated while being engaged with the pinion gear 37, this rotation is then transmitted to the pinion gear 29 via the spur gear 42 and the small gear 37, and thus the pinion gear 29 rotates. for,
The movable tube 9 slides along the optical axis 0', and the tracking adjustment of the image pickup tube 6 is performed.

As explained above, according to the present invention, the configuration of the image pickup tube adjustment device for a television camera is greatly simplified, and therefore the entire device can be miniaturized. Since the operation unit is located on the side facing the camera side lid, very delicate adjustments of image pickup tube rotation and tracking can be made from one direction using a simple tool such as a screwdriver. Easy and
It can be carried out accurately and is extremely useful in practical use, for example, when it is adopted in small portable television cameras and the like.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the interior of a small portable television camera employing a first embodiment of the adjustment device according to the present invention, particularly the main parts related to the present invention, with the camera side lid removed; The figure is a detailed view taken along line A-A in Figure 1, Figure 3 is a cross-sectional view taken along line B-B (excluding the image pickup tube) in Figure 2, and Figure 4 is a detailed view taken along line A-A in Figure 1.
The figure is a cross-sectional view taken along the line C-C in FIG. 2 (excluding the image pickup tube), and FIG. 5 shows the main parts of the second embodiment of the adjustment device according to the present invention. The figure shown in the same state, Figure 6, is
The main parts of the third embodiment of the adjustment device according to the present invention are explained in the second embodiment.
It is a figure shown in the same state as FIG. 5. 3... Color separation prism, 0'... Prism optical axis, 4... Prism box wall, 6...
...Imaging tube, 7...Fixed barrel, 7a...
...Notch part, 7b, 7b'... Ear part, 9...
...Moving tube, 10.26...First adjustment means (for rotation adjustment), 16.29...Second adjustment means (for tracking adjustment), 13-15. 3
2...First connection means, 21°34...
Second connecting means, 10a, 27a... Operating section of the first adjustment means, 17a, 30a...
...Operation section of second adjustment means, 38 to 43...
Components of the common operating means, 38a... Operating section of the common operating means.

Claims (1)

[Scope of utility model registration request] A portion is cut out and has a pair of ears that sandwich the cutout,
A fixed tube that is aligned and fixed with respect to the optical axis of the optical system,
a first adjusting means for loosely fitting the movable tube and rotating the movable tube around the optical axis; and a second adjusting means for sliding the movable tube in a direction along the optical axis. The first adjusting means is attached to the ears of the fixed tube so as to be rotatable about an axis perpendicular to the optical axis, and when the first adjusting means is rotated, The tube is rotated around the optical axis, and the movable tube is freely allowed to slide along the optical axis through a first connecting means, and through a second adjusting means. , a second connection that allows the movable barrel to slide along the optical axis when the movable barrel is rotated, and freely allows rotation of the movable barrel about the optical axis; The movable barrel is connected to the movable barrel within the cutout portion of the fixed barrel through a means, and the operating means for independently operating the first and second adjusting means is connected to the side substantially facing the camera side lid. By operating the operating means to rotate the first adjustment means with the imaging tube fitted into the movable tube, the movable tube can be moved to the optical axis. By rotating the movable tube around the center to adjust the rotation of the image pickup tube fitted therein, and by operating the operating means to rotate the second adjusting means, the movable tube can be rotated. An image pickup tube adjustment device for a television camera, which allows tracking adjustment of the image pickup tubes fitted therein by sliding along an optical axis.