JPS6331045Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a writing scale for photocopying.

The purpose of this invention is to provide a lighting scale that can freely set the irradiation angle to the subject, check the intensity of the irradiation, and measure whether the subject is positioned horizontally. It is something to do.

Embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a writing scale composed of a horizontally long bottom plate 2 having a predetermined thickness, an upright plate 3 erected vertically from the center of the bottom plate 2, and a level 4 placed in parallel with the upright plate 3. The bottom plate 2 has irradiation angle scales 5 symmetrically displayed on its surface. An upright plate 3 stands vertically from the center of the bottom plate 2, and is erected in the width direction of the bottom plate 2, and has an L-shaped end surface. This upright plate 3 has an upright piece 32 vertically erected continuously in the height direction from one end side of a base piece 31 fixed on the bottom plate 2. Note that the scale 5 indicates the irradiation angle, and when the optical axis passing through the tip of the upright piece 32 that stands up at the center of the bottom plate 2 is irradiated onto the surface of the bottom plate 2, the upright piece appears on the surface of the bottom plate 2. 32 shadows are projected, and the position of the tip is displayed as the irradiation angle. The spirit level 4 is installed in parallel to the upright plate 3 that stands from the center of the bottom plate 2, and is fixed to the bottom plate 2 using fixing means such as screws. This spirit level 4 is used to measure whether the screen to be photographed is in a horizontal state when the bottom plate 2 is placed on the screen to be photographed, and is adjacent to the upright plate 3. Reference numeral 6 denotes a light that illuminates the subject, and is used to project the shadow of the upright piece 32 standing from the center of the bottom plate 2 onto the display surface of the bottom plate 2 on which the scale 5 is displayed. 7
is a camera that takes a copy of the subject.

Since the present invention is configured as described above, when using this, the camera 7 and the two lights 6 on both the left and right sides of the screen are set in advance above the center of the screen that is the subject, and the screen is Place writing scale 1 in the center of the screen. In this case, the writing scale 1 aligns the graduations 5 displayed on the left and right sides to be perpendicular to the center line of the screen, depending on the desired irradiation angle. Further, the level gauge 4 measures whether the screen is in a horizontal state. Next, the scale 5 on one side is turned on, for example, toward the lighting scale that matches the scale 5 displayed on the left side, and the light 6 located on the right side is turned on so that the tip of the shadow of the upright piece 32 matches the scale 5 of the desired irradiation angle. Adjust the position of the right light 6 as shown. Similarly, the lighting scale 1 is horizontally moved to the left to adjust the position of the left light 6.

In addition, when irradiating the left and right lights 6 as illustrated in Fig. 2 a and b, the optical axis of the lights 6 are set at the center of each, and the shadows are shaped like a trapezoid placed right sideways. When irradiating with a light, adjust the shadows so that the overlapping shadows on the left and right sides form a triangular shape. Then, as illustrated in FIG. 3, the left and right lights 6 directed toward the writing scale 1 placed horizontally in the center of the screen are turned on to confirm whether the density of the left and right shadows is the same. In this case, if one is dark and the other is light, move the light 6 on the optical axis and adjust so that the density is the same. After completing these adjustments, remove the lighting scale 1 placed in the center of the screen, turn on the light 6 on the subject on the screen, and turn on the camera 7.
By taking an image at , it is possible to perform a copy image at an initial desired irradiation angle.

Since the present invention has the above-mentioned configuration, it is possible to set the desired irradiation angle to the subject, and it is also possible to check the shading of the shadows cast to the left and right, so that the light is averaged over the entire subject. Therefore, it is possible to reliably perform copy photography.
Furthermore, since it is possible to measure whether the screen to be photographed is in a horizontal state using the spirit level 4, it has various features such as enabling stable copying.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and Fig. 1 is a perspective view, Fig. 2 a and b are plan views showing how shadows are cast using one and four lights, and Fig. 3 is a perspective view. is a front view showing the state of use. 1... Writing scale, 2... Bottom plate, 3
... Standing board, 4 ... Level, 5 ... Scale.

Claims (1)

[Scope of utility model registration request] a horizontally long bottom plate having a predetermined thickness; an upright plate standing in the width direction of the bottom plate and standing upright in the center;
A writing scale comprising a spirit level installed in parallel with the upright plate, and a scale indicating the irradiation angle displayed on the surface of the bottom plate symmetrically with respect to the upright plate.