JPH0416832A - Attachment for camera - Google Patents

Abstract

PURPOSE:To photograph a subject over a direct look by providing a parallax correcting means at the position of the base part of an attachment body which faces the finder window of the camera. CONSTITUTION:The parallax correcting means 6 is provided at the position of the base part 2b of the main body of the attachment 1 which faces the finder window 56 of the camera 50. The range of an optical system which is photographic through the photographic lens 57 of an electronic still camera 50 matches the range which is viewed through the finder 55 to compensate parallax. Consequently, a photograph can be taken over a direct look at the waveform 42 on an oscilloscope 40 through the finder 55 of the electronic still camera 50 and a failure in photographing the waveform 42 by the electronic still camera 50 can nearly be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an attachment used, for example, in an electronic still camera.

[Summary of the Invention] The present invention is a camera attachment having a camera attachment part on the base side of an attachment body whose distal end side is formed into a cylindrical shape, to which a camera having a finder is detachably attached, and the above-mentioned attachment By providing a parallax correction means at the base of the main body at a position facing the camera's viewfinder window, it is possible to take pictures while directly viewing objects such as oscilloscope waveforms through the camera's viewfinder whose parallax is corrected by the parallax correction means. It was made so that it could be done.

[Prior Art] For example, when recording waveforms from an oscilloscope, an instant camera using pack film is used, and its simplicity is well known.

[Problem to be solved by the invention] However, when capturing waveforms from an oscilloscope with an instant camera, a large amount of film has to be wasted due to inappropriate exposure. In addition, pack film for instant cameras is expensive and its running cost is quite burdensome.

Furthermore, instant cameras do not have viewfinders, making it impossible to take pictures while looking at waveforms, and many mistakes are likely to occur.

Therefore, the present invention provides an optimal camera attachment for use in directly viewing and photographing an object such as an oscilloscope waveform.

[Means for Solving the Problems] A camera attachment having a camera mounting part on the base side of an attachment body whose tip end side is formed in a cylindrical shape, to which a camera having a finder is detachably attached, the above-mentioned Parallax correction means is provided at the base of the attachment body at a position facing the finder window of the camera.

[Function] When photographing a subject such as an onroscope waveform using an attachment equipped with parallax correction means at a position opposite to the camera's viewfinder window at the base of the attachment body, the range that can be seen through the camera's viewfinder and the actual Since the photographic areas match (parallax correction is performed), you can take pictures while checking the subject through the viewfinder, which reduces mistakes.

[Example code] Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

1 to 3, reference numeral 1 denotes a camera attachment. For example, when photographing a waveform 42 displayed on a monitor 41 of an onroscope 40 with an electronic still camera 50,
It is used by being attached to the electronic still camera 50.

Attachment body 2 of this camera attachment 1
The distal end portion 2a side is formed in the shape of a reverse pyramidal cylinder, and the base portion 2b side thereof has a camera attachment portion 3 to which the electronic still camera 50 is detachably attached. The camera mounting portion 3 is formed to have a substantially horizontal U-shape in cross section, and its inner circumferential surface is formed to be slightly larger than the outer circumference of the electronic still camera 50. A plurality of rubber pieces 4.5 are buried in the opposing upper and lower parts of the inner circumferential surface of the camera mounting portion 3, and an opening 53a on the right side is provided between each rubber piece 4.5.
By pushing in or pulling out the electronic still camera 50, the electronic still camera 50 can be detachably attached. In addition, this camera mounting part 3
When the electronic still camera 50 is attached to the electronic still camera 50, as shown in FIG. The shooting preparation button 54 and the like are exposed to the outside.

Further, the tip of the distal end portion 2a of the attachment main body 2 is open and is sized to fit over the monitor 41 of the onroscope 40.

Furthermore, the closed base 2 of the attachment main body 2
A parallax correction prism (parallax correction means) 6 is attached to a position facing the finder window 56 of the finder 55 of the electronic still camera 50 attached to the camera attachment part 3 of b. A lens 7 for macro correction is attached at a position opposite to the photographing lens 57. Further, a substantially elliptical hole 8 is provided in the base portion 2b of the attachment body 2 at a position facing the light control sensor 58 of the electronic still camera 50. The parallax correction prism 6 lens 7 is fixed to the base 2b by a mounting plate 10 attached to the base 2b with screws 9 or the like.

According to the camera attachment l of the above embodiment, for example, when photographing the waveform 42 of the onroscope 40, when the attachment l is attached to the electronic still camera 50 and used, the electronic still camera attached to the base 2b of the attachment body 2 A parallax correction prism 6 is installed at a position facing the finder window 56 of the electronic still camera 50, and a macro correction lens 7 is installed at a position facing the photographing lens 57 of the electronic still camera 50, as shown in FIG. ,
Parallax correction is performed so that the range of the optical system photographed by the photographing lens 57 of the electronic still camera 50 matches the range seen by the finder 55), and the electronic still camera 5
The waveform 42 of the oscilloscope 40 can be directly viewed and photographed through the zero finder 55, and failures in photographing the waveform 42 by the electronic still camera 50 can be almost eliminated.

Further, by using the electronic still camera 50, recording and erasing of images can be done easily, so running costs can be significantly reduced.

Incidentally, in the above embodiment, a prism is used as the parallax correction means, but a combination of lenses of various shapes may also be used.

Furthermore, the subject is not limited to the waveform of an oscilloscope.

Furthermore, an opening may be provided in the base 2b of the attachment body 2 at a position facing the strobe 59 of the electronic still camera 50 so that the strobe 59 can be used.

[Effects of the Invention] As described above, according to the present invention, an object such as a waveform of an oscilloscope can be photographed by using an attachment in which a parallax correction means is provided at a position facing the viewfinder window of a camera to which the attachment body is attached. Since the area visible through the camera's viewfinder matches the area actually captured, it is possible to photograph the subject while checking it through the camera's viewfinder, reducing mistakes and photographing the subject at a low cost. can do.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view showing one embodiment of the present invention;
The figure is a plan view showing a main part in cross section, and FIG. 3 is a rear view. DESCRIPTION OF SYMBOLS 1... Attachment for camera, 2... Attachment main body, 2a... Tip part, 2b base, 3... Camera mounting part, 6... Parallax correction prism (parallax correction means), 50. ...Camera, 55...finder, 56...finder window. ! Rear view Figure 3

Claims (1)

[Claims] (1) A camera attachment having a camera mounting part on the base side of the attachment body whose tip end side is formed into a cylindrical shape, to which a camera having a finder is detachably attached, the camera at the base of the attachment body. A camera attachment characterized in that a parallax correction means is provided at a position facing the finder window of the camera.