JPS62273525A - Adjusting device for three-dimensional video photographing lens - Google Patents

Abstract

PURPOSE:To easily adjust a lens for photographing three-dimensional videos, by constituting an adjusting device of an adjuster which adjusts the central positions of master lenses and a finder on which images from the master lenses are projected and adjusting the central positions of the master lenses conformably to the scale marks for adjustment of the finder. CONSTITUTION:On the object side of a lens box 11 a paired right and left master lenses 12 and 13 are provided in such a way that their central positions are set at right and left positions with an appropriate interval between them in accordance with the eye intervals of human beings. The master lenses 12 and 13 are respectively fitted to guide rails 34 and 35 under slidable conditions and their central positions are moved in both right-left and up-down directions by adjusters 36 and 37 through screws. Therefore, when the central positions are moved by operating the adjusters 36 and 37 to bring images B2 and C2 to the central positions while watching them through a finder 10, the central positions of the master lenses 12 and 13 are easily adjusted and an image, whose right-side and left-side parts are not inverted to each other, is formed. Thus a video which is close to a natural view is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an adjustment device for a lens for taking stereoscopic images, such as a stereoscopic photograph.

<Prior Art> Conventionally, in order to take a stereoscopic image such as a stereoscopic photograph, a lens box 29 as shown in FIG.
A lens 30 composed of a master lens 28 disposed on the objective side of the lens 9 is attached to a camera body 26 equipped with a finder 25 onto which an image from the master lens 28 is projected. That is, the two cameras 1 equipped with lenses 30 are placed at left and right positions X as shown in FIG.

The cameras were arranged in Y, and the subject 2 was photographed from the left and right sides while the horizontal position of the master lens 28 was adjusted by moving the angle of the sword camera 1 while alternately looking through the finders 25 of the left and right cameras 1. After re-editing the shot video onto a single piece of film 31 as shown in Figure 5, with the left and right centers slightly shifted and the top and bottom integrated, a filter 3 with diagonal lines as shown in Figure 6 is attached. The film 3 is
1 was projected, and images from the left and right sides slightly off-center were sent to the left and right eyes through filter glasses 5 with diagonal lines as shown in FIG. 7, giving a three-dimensional effect.

<Problems to be Solved by the Invention> However, in order to take pictures with the lens 30, the center positions of the two master lenses 28 must always be aligned vertically, so the viewfinders 2 of the two cameras 1
There was a problem in that it was necessary to adjust the center position of the lens by looking through the lenses alternately, making the adjustment troublesome.

<Means for Solving the Problems> The present invention aims to solve the above problems, and includes two master lenses slidably attached to a guide rail, and a lens corresponding to the master lenses. A first projection mechanism consisting of two sets of field lenses provided on the film side and a set of mirrors for converting the direction of image projection by the field lenses, and an upper and lower integrated system for transmitting images from the second projection mechanism. A lens for stereoscopic imaging comprising a second projection mechanism consisting of a pair of upper and lower mirrors that projects an image, a relay lens that receives the image from the second projection mechanism, and a lens box that houses them. , an adjuster that is provided in the lens box and moves the center position of the master lens via a screw; and a finder that has a scale in the center for adjusting the center position of the master lens and onto which the image from the relay lens is projected. An adjusting device for a lens for stereoscopic imaging, characterized in that the center position of the master lens is set by the adjuster in accordance with the adjustment scale of the finder.

<Examples> Examples of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in Figure 1 (a) and (b), the lens box 1
On the objective side of No. 1, a pair of left and right master lenses 12 and 13 are set at a center position of about 63 mm on the left and right, which is equal to the distance between human eyes, and at an appropriate distance on the top and bottom according to the size of the film. has been done. Here, the master lens 1
2 and 13 are slidably attached to guide rails 34 and 35, and are moved by adjusters 36 and 37 via screws in the center position vertically and horizontally.

Furthermore, two sets of field lenses 14.15 are arranged on the film side corresponding to the master lenses 12, 13, and the image projection by the field lens 14.15 is provided on the film side of the field lenses 14.15. A first projection mechanism 16,17 consisting of a set of mirrors for changing direction is provided.

Here, the first projection mechanisms 16 and 17 are arranged so that the mirror surfaces having a hyperplane form an angle of 45° with respect to the central axis of the lens box 11.

Further, on the central axis of the lens box 11 corresponding to the first projection mechanisms 16 and 17, a second mirror consisting of a pair of upper and lower mirrors projects the image from the first projection mechanism as an upper and lower image.
Projection mechanisms 18 and 19 are provided. Here, the second
The projector 1i118.19 is arranged such that a mirror surface having a hyperplane faces perpendicularly to the mirror.

Further, the second projection mechanism 18 is located on the central axis of the lens box 11 on the film side of the second projection mechanisms 18 and 19.
．． A relay lens 20 that receives an image from 19 is provided.

Next, an example of use of the present invention will be explained as follows.

As shown in FIG. 1(a), the left and right master lenses 12
．． The images B and C of the object entered from 13 first pass through field lenses 14 and 15, and due to the excellent imaging power of the field lenses, images B, C, free of aberration are formed. Further, the projection direction of the images B, C, is converted by the first projection mechanisms 16, 17 made of mirrors having a hyperplane mirror surface, and the projection direction of the images B, C, is converted by the second projection mechanisms 18, 19 made of similar mirrors. The image is sent to the relay lens 20 as an integrated upper and lower image, its brightness is doubled by the relay lens 20, and the amount of light lost is compensated by the field lens and mirror, resulting in a clear image without aberrations as shown in Figure 8. B...
C, are imaged on the film surface 7 in the upper and lower parts.

While looking through the finder 10 as shown in FIG. 9, if you move the adjusters 36 and 37 so that the images B, CL, and CL are at their respective centers, the master lenses 12,
13 can be easily adjusted. In addition, since the horizontal center distance between the two master lenses is about 63 m, which is equal to the distance between human eyes, an image is formed without any reversed left and right parts, as shown in Figure 4, which is close to natural vision. Images can be obtained.

<Effects of the Invention> As described above, in the present invention, by adjusting the center positions of the two master lenses using the adjuster in accordance with the adjustment scale of the finder, left and right images from the left and right master lenses of one lens box can be adjusted. Since the image is formed on the film surface as an integrated upper and lower image, the center position of the master lens can be easily adjusted during photographing.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are a cross-sectional view and a side view showing the adjusting device for a stereoscopic imaging lens according to the present invention, Figure 2 is a cross-sectional view of a conventional lens, and Figure 3 is a cross-sectional view of a conventional lens. FIG. 4 is a plan view showing shooting with the adjusting device for a lens for stereoscopic image manipulation of the present invention, FIG. 5 is a side view showing a stereoscopic image film, and FIG. 6 is a plan view showing shooting of a stereoscopic image. FIG. 7 is a perspective view showing a projector, and FIG. 7 is a perspective view showing glasses for viewing stereoscopic images.
FIG. 8 is a side view of a film of a stereoscopic image photographed by the adjusting device for a lens for shooting a stereoscopic image according to the present invention, and FIG. 9 is a side view showing a finder of the adjusting device for a lens for shooting a stereoscopic image according to the present invention. 10 ・Finder, 11...Lens box, 12
．． 13... Master lens, 14.15... Field lens, 16.17-... First projection mechanism, 18.19... Second projection mechanism, 20... Relay lens, 36.37.・Adjuster.

Claims (1)

[Claims] Two master lenses are slidably attached to a guide rail, two sets of field lenses are provided on the film side corresponding to the master lenses, and one set of field lenses is provided to change the direction of image projection by the field lenses. A first projection mechanism consisting of a mirror, a second projection mechanism consisting of a pair of upper and lower mirrors that project the image from the first projection mechanism as an upper and lower integral image, and an image from the second projection mechanism. A three-dimensional imaging lens comprising a relay lens for receiving a relay lens and a lens box in which the lenses are housed, the adjuster being provided in the lens box and moving the center position of the master lens via a screw; and a finder having a center position adjustment scale in the center and onto which the image from the relay lens is projected, and adjusting the center position of the master lens by the adjuster in accordance with the adjustment scale of the finder. An adjustment device for a lens for stereoscopic imaging, which is characterized by: