KR960001046Y1 - Iris device of a camcoder - Google Patents

Abstract

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Description

Aperture of Camcorder

1 is a cross-sectional view showing the internal structure of the barrel of a conventional camcorder

2 and 3 show an embodiment of the aperture device of a conventional camcorder,

2 is a block diagram showing an aperture device of a swing-type camcorder

3 is a block diagram showing an aperture device of a slide-type camcorder

4 is an exploded perspective view showing an aperture device of a camcorder according to the prior art.

5 is an exploded perspective view showing the aperture device of the camcorder according to the present invention

(A) and (b) of FIG. 6 are perspective views of a driving pin constituting an aperture device of a camcorder according to the present invention

7 is a cross-sectional view showing an aperture device of a camcorder according to the present invention

* Explanation of symbols for main parts of the drawings

31: base plate 32, 33: aperture blade

34: cover 40, 40 ': driving pin

40a, 40'a: stepped portion 41: driving lever

42, 50: close contact portion 51: support portion

The present invention relates to a diaphragm device of a camcorder, and in particular, only two sets of diaphragm blades are inserted into the barrel case, making it easier to design a lens and a barrel by reducing the thickness and weight. It relates to an aperture device of a camcorder that can be made.

In a camcorder generally used, light is directed to an imaging surface such as a solid-state imaging device (CCD) via an imaging lens.

The solid-state imaging device converts the received light into an electrical image signal, and at this time, a plurality of bladed apertures are provided in front or rear of the imaging lens to adjust the amount of light reaching the imaging surface of the imaging unit within a predetermined range. have.

The amount of light reaching the imaging surface is controlled by the opening amount of the stop.

1 is a cross-sectional view of a barrel showing a diaphragm installation state of a general camcorder, wherein the image pickup device 2, the rear lens 3, the intermediate lens 4, 5, and the intermediate lens (from the rear of the barrel case 1) are shown in FIG. 4) (5), the aperture device 6 and the front lens 7, 8 are sequentially coupled, and the aperture device 6 has several apertures having a predetermined thickness t as a whole. It consists of the driving motor 10 which drives the blades 9 and 9 'and its aperture blades 9 and 9'.

As the diaphragm 6, as shown in FIG. 2, a swing type in which the diaphragm wings 9 and 9 'are operated in a curved manner, and as shown in FIG. As the method is known, a typical example of the slide type aperture device will be described with reference to the accompanying drawings.

The hatched portions in FIGS. 2 and 3 show the areas opened by the aperture blades 9, 9 ′, respectively.

As shown in FIG. 4, the slide type diaphragm apparatus by the prior art is comprised from the base board 11, two sets of diaphragm wings 12 and 13, and the cover 14. As shown in FIG.

The base plate 11 has a rim wall 15 formed at a predetermined height in the periphery, a circular hole 16 is formed in the middle portion, and guide pins 17 and 17 at regular intervals on both sides of the upper surface. '), (18) and 18' are formed respectively, and a driving motor 19 is fixed to the rear surface, and the rotating shaft 20 of the driving motor 19 protrudes to the upper surface, and the rotating shaft 20 The driving lever 22 is fixed to the driving pins (21, 21 ') fixed to both sides.

The one side of the aperture blade 12 is formed with guide holes 23 and 23 'inserted into one side guide pin 17 and 17' of the base plate 11 at one side edge thereof, and a driving lever at the rear side thereof. The coupling hole 24 is inserted into the driving pin 21 of one side is formed, and the curved indentation part 25 is formed on the other side.

The other side of the aperture blade 13 has guide holes 26 and 26 'inserted into the other guide pins 18 and 18' of the base plate 11 at one side edge thereof, and at the rear thereof, a driving lever ( The coupling hole 27 is inserted into the other driving pin 21 'of the 22), and the circular hole 28 is formed in the middle portion.

The cover 14 has guide holes 29, 29 ′, 30, 30 ′ which are inserted into guide pins 17, 17 ′, 18, 18 ′ of the base plate 11 at both side edges. And circular guide holes 31 and 31 'inserted into the driving pins 21 and 21' of the driving lever 22, respectively, and circular holes 32 are respectively formed in the middle portion. .

The aperture device of the camcorder according to the prior art configured as described above has the two guide pins 17, 17 ', 18 and 18' of the base plate 11 and both driving pins 21 of the driving lever 22. Aperture blades 12 and 13 and cover 14 are sequentially coupled to the blade 21 'to complete the assembly.

In this way, the aperture device of the camcorder is assembled so that the driving lever 22 is rotated at a predetermined angle along both arc-shaped guide holes 26 and 26 'of the cover 14 by the driving of the driving motor 19. Both aperture wings 12, 13 are guided by both guide pins 17, 17 ′, 18, 18 ′ of the base plate 8 and shown in opposite directions, ie in FIG. 3. By moving in the direction of one arrow, light passes through the area corresponding to the hatched portion of FIG. 3 to reach the imaging surface.

However, the aperture device of the camcorder according to the prior art as described above has a relatively thick thickness (T) of 2 to 3 mm inserted into the barrel case 1, so that the design of the lens for miniaturization and weight reduction and There was a problem that the design of the barrel is not easy.

An object of the present invention is to provide only a pair of aperture blades inserted into the barrel case, and to reduce the thickness of the aperture device of the camcorder to facilitate the design of the lens and the barrel for miniaturization and weight reduction. In providing.

In order to achieve the object of the present invention as described above, in the diaphragm of the camcorder consisting of a base plate, two sets of diaphragm wings, and a cover, the diaphragm is fixed to both ends of the driving lever coupled to the base plate And a driving pin for supporting the blades, a contact protrusion for pressing the diaphragm blades formed on the upper surface of the base plate and the lower surface of the lid, respectively, and a support portion formed on the lower surface of the lid to support one side of the blade blades. An aperture device of a camcorder is provided.

Hereinafter, an aperture device of a camcorder according to the present invention will be described according to an embodiment shown in the accompanying drawings.

5 is an exploded perspective view showing the aperture device of the camcorder according to the present invention, Figure 6 (a) and (b) is a perspective view of the driving pin constituting the aperture device of the camcorder according to the present invention, Figure 7 is the present invention As a sectional view of the aperture device of the camcorder according to the present invention, as shown here, the aperture device of the slide-type camcorder according to the present invention includes a base plate 31, two sets of aperture blades 32 and 33, The cover 34 is comprised.

The base plate 31 is formed to be about 1/2 smaller than the conventional size, and the edge wall 36 is formed on the remaining portions except the cutout part 35, and guide pins 37 are formed on both sides of the upper surface. ) 37 'are formed on each side, and the driving motor 38 is fixed to the rear surface, and the rotating shaft 39 of the driving motor 38 protrudes upward, and the driving shaft 39 is driven on both sides. The driving lever 41 to which the pins 40 and 40 'are fixed is fixedly coupled, and a close protrusion 42 is formed on one side of the upper surface.

As shown in (a) and (b) of FIG. 6, the driving pins 40 and 40 'have different heights of the stepped portions 40a and 40'a.

That is, as shown in (b) of FIG. 6, the driving pin 40 to which one side of the aperture wing 32 is coupled has a low height of the stepped portion 40a, and the other side of the aperture wing 33 is coupled to the driving pin 40. As shown in (a) of FIG. 6, the driving pin 40 'is formed to have a high height of the stepped portion 40'a.

The one side of the aperture blade 32 is formed with a guide hole 43 is inserted into one side guide pin 37 of the base plate 31 on one side, the rear side driving pin 40 of the driving lever 32 Coupling hole 44 is inserted into the) is formed, the other side is formed with a curved recess 45.

The other side of the aperture blade 33 is formed with a guide hole 46 is inserted into the other guide pin (37 ') of the base plate 31 on one side, the rear driving pin (40) of the driving lever 32 The coupling hole 47 is inserted into the ') is formed, the circular hole 48 is formed in the middle portion.

The cover 34 is formed to be about 1/2 smaller than the conventional size, and the circular guide hole 49 is inserted into both driving pins 40 and 40 'of the driving lever 41 at both sides. A 49 'is formed, and a close contact portion 50 is formed on one side of the lower surface, and a support portion 51 for supporting the aperture blade 32 inserted into the driving pin 40 on one side thereof (Fig. 7). Shown) is formed.

Referring to the effect of the camcorder aperture device according to the present invention configured as described above are as follows.

7 is a view showing the coupling state of the camcorder aperture device according to the present invention, and the heights of the driving pins 40 and 40 'of the driving lever 41 are different, and the aperture blades 32 and 33 on the aperture blades 32. (32) and (33) are coupled step by step, the middle portion of the aperture blades (32) and (33) is in close contact with the base plate 31 and the close protrusions 42 and 50 of the cover 34 As a result, the thickness T 'of the diaphragm vanes 32 and 33 inserted into the barrel case 1 (shown in FIG. 1) is remarkably thinner than in the prior art.

In this state, when the driving lever 41 is rotated at a predetermined angle along both arc-shaped guide holes 49 and 49 'of the cover 34 by driving of the driving motor 38, both aperture blades 32 33 is guided by both guide pins 37 and 37 'of the base plate 31 and moves in opposite directions to reach the image pickup surface.

At this time, since the support part 51 is formed on the lower surface of the cover 34, the movement of the one stop blade 32 is supported.

As described above, the aperture device of the camcorder according to the present invention has an effect of making the lens and the barrel design easier for miniaturization and weight reduction by inserting only two sets of aperture blades into the barrel case.

Claims (2)

In the aperture device of a camcorder consisting of a base plate (31), two sets of aperture blades (32) and (33), and a cover (34), the base plate (31) and the cover (34) are disposed outside the barrel. And driving pins 40 and 40 'which are fixed to both ends of the driving lever 41 coupled to the base plate 31 to support the stop blades 43 and 33 to step. 31 are formed on the upper surface of the upper surface and the lower surface of the cover 34, respectively, the compression protrusions 42 and 50 for pressing the aperture blades 32 and 33, and the lower surface of the cover 34 and the one side aperture blade ( And a support portion (51) for supporting the aperture (32). The aperture of the camcorder according to claim 1, wherein each of the driving pins 40 and 40 'to which the aperture blades 32 are coupled is formed with stepped portions 40a and 40'a having different heights. Device.