JPH01260525A - Auxiliary device for graphic input for cad device - Google Patents

Abstract

PURPOSE:To attain graphic input more accurately than that of a CCD camera (image reader) by inputting an original drawing image or a real substance image observed through a perspective window part to a computer as a facsimile drawing. CONSTITUTION:When an original drawing (reflecting original) 9 or a real substance is set on the plane of a set plate 7 and it is illuminated by an illumination source 8 and a black box 2 is observed from the perspective window part 5, the original drawing 9 or the image 9a of the real substance can be observed visually in a state where they are superposed optically on a CRT screen plane 21 by the function of a half mirror 6. In such a state, it is possible to perform plotting input (storage) to the computer by making the image 9a, that is, the original drawing 9 or the facsimile image of the real substance into a drawing by positioning a cursor 23 to each apex of the image 9a as observing visually the image 9a and inputting each apex position to the computer. In such a way, the graphic input can be performed more accurately than image reading input by the CCD camera.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a graphic input assisting device (attack attachment) that is convenient and effective for drawing when used in combination with a computer-applied design/drafting system device, a so-called CAD device.

More specifically, CRT for computer display;
Set an arbitrary coordinate point position by moving the cursor using the mouse on the screen surface (B, Raun tube phosphor film surface) of (Zuraun tube), and then draw a straight line or arbitrary curve between C, AI, which is a method of drawing lines, drawing a desired figure, and inputting it into a computer to create a draft.
) An object of the present invention is to provide a graphic input auxiliary device that can easily input an original drawing or a reproduction drawing of an actual object.

That is, the present invention is a graphic input auxiliary device that is used in combination with a computer-applied CAD device by being placed on the front side of the screen of a CRT for display, and is used in combination with an original drawing or a set part of the object, and the corresponding device. The image of the original drawing or actual object set in the set section is optically superimposed on the outer surface of the CR, T screen, or CRT
The device comprises an optical means for projecting the image onto the outer surface of the screen, and a see-through window for observing the optically superimposed image of the original drawing or the image of the real object on the outer surface of the CRT screen, or the projected image on the CRT screen surface. This is a graphic input auxiliary device for a CAD device.

A detailed explanation will be given below based on the illustrated example.

Example-1 (Figure 1 (a), (b)) In Figure 1 (a), 20 is a computer display CRT of a CAD device, 21 is its screen surface, and 22 (
(b') is a mouse for moving the cursor 23 on the CRT screen.

1 is the overall code of an auxiliary device for graphic input that is used in combination with the CRT screen of the CAD device, and 2 is a dark box as the outer body of the auxiliary device; An opening 3 with two CRT screen surfaces and one gold surface facing the whole of the screen surface into the dark box, and a two CRT screen surface provided on the front wall 4 of the dark box on the opposite side to the opening 3, to observe the two CRT screen surfaces directly facing the gold. It has a see-through window section 5. 6 is half mirror
In the dark box 2, the CRT screen is disposed on the axis connecting the central part of the opening 3 facing the two sides and the central part of the transparent window part 5 in a horizontal position at 45 degrees to the right with respect to the axis. It is. 7 is a set plate or stand for the original drawing or actual object placed on the right side of the 11) i:j box 2, and 8.8 is an illumination light source.

When an original drawing (reflection original) 9 or a real object is set on the set plate 7 surface and illuminated with an illumination light source 8.8, and when the inside of the dark box 2 is looked through the transparent window 5, the CRT screen surface 2 Menkin 1 and original drawing 9 or image of real object 9
As shown in Figures a and (b), the lids are visually recognized as optically overlapped.

If the image 9a is observed and visually recognized in the state shown in this (+) figure, the cursor 23 is moved to each vertex of the image 9a by mouse operation, and the position of each vertex is manually operated on the computer. Drawing 9 or a reproduction image of an actual object can be easily created into a drawing and the drawing can be manually drawn (memorized) by a computer.

In this way, it is extremely easy to input the original drawing image 9a observed through the perspective window 5 or the real object image into a computer as a reproduction drawing, and generally, the original drawing image is read into the computer through a CCD camera (imager) and manually inputted. It is a cheaper device compared to CCD
It is possible to eliminate plotting inaccuracies due to an insufficient number of pixels in the array.

Example 2 (Fig. 2) In this example, a projection lens 10 is added to the apparatus shown in the example shown in Fig. 1, and a real object 11 is set on the setting table 7.
Illumination is provided by a powerful light source 8.8.

In this case, the image of the real object 11 is projected onto the outer surface of the CRT screen 21 by the action of the projection lens 10 and the half mirror 6. If this is observed through the transparent window 5, the real object 11
The image is observed superimposed on the CR'T screen 21 surface. The human power required to draw this image of a real object on a computer is as shown in the example above.
This is done in the same manner as in case 1.

If it is not desired to make the mirror image in the arrangement of this example a conpico or a normal image, a reflecting mirror is placed between the projection lens 10 and the half mirror 6, or between the projection lens 10 and the real body 11. By arranging □, a normal image of the real object 11 can be projected onto the outer surface of the CRT screen 21.

Example 3 (Fig. 3) This example shows an optical system for a transparent image such as an original drawing, a real object, or a transparent film.12 is a Fresnel lens, 13 is a diffuser plate, and 14 is a transparent image. indicates a reflector.

Example 4 (Figure 4) This example shows an optical system when the original drawing is a small transparent image such as a slide or microfilm.

15 is a small transparent picture, 16 is a condensing lens, and 17 is a light source.

In both cases of Example 39 and Example 4, the transparent original image is projected onto the C'RT screen 21 and can be observed through the see-through window 5. If the projection lens 10 is a zoom lens, the dimensions of the projected image can be made variable in either case.

As described above, according to the graphic input assisting device of the present invention, C.
It is possible to easily draw an original drawing or a reproduction drawing of a real object manually using an AD device, and it is possible to manually draw a figure more accurately than manually reading an image using a CCD camera.

[Brief explanation of the drawing]

The drawings show various configuration examples of the graphical human power assisting device of the present invention, and FIG. 1(a) is a schematic diagram of the configuration of the first example, and FIG. The original drawing images shown in FIGS. 2, 3, and 4 are the second and third examples, respectively. It is a schematic diagram of the configuration of a fourth example. 20 is CRT for computer display of CAD device
, 21 is the screen surface, 22 is the mouse, 23 is the cursor, 1 is the overall code of the auxiliary device for graphic input, 2 is the dark box, 6 is the half mirror, 17 is the original drawing or actual object set plate or stand, 8 is the An illumination light source, 10 a projection lens. Patent applicant Kikuchi Science Institute Co., Ltd.) αy Ward ○ 7 CXJ ('J

Claims (1)

[Claims] (1) This is an auxiliary device for inputting figures that is used in conjunction with a computer-applied CAD device by being placed in front of the screen surface of a display CRT, and includes a set part for original drawings or actual objects, and a set part for the set part. an optical means for optically superimposing an image of an original drawing or an actual object set on a CRT screen on the outer surface of the CRT screen or projecting it onto the outer surface of the CRT screen; Optical superimposed image or C
A graphic input auxiliary device for a CAD device, comprising a see-through window for observing a projected image on an RT screen surface.