Point-radiation mirror-image positioning amplifier for contour drawing

Abstract

The invention discloses a point-radiation mirror-image positioning amplifier for contour drawing. The point-radiation mirror-image positioning amplifier mainly comprises a tripod for supporting a drawing board, the drawing board, a mirror-image reflection mirror fixed to the drawing board, a triangular pantograph clamping the mirror-image reflection mirror and the drawing board, and an eye blocking unit. A fixing unit is arranged on the triangular pantograph, when a contour is drawn, a painter just needs to overturn the drawing board or directly draw in front of drawing paper, measurement errors caused by overturning and moving of the triangular pantograph are avoided, and the accuracy of drawing of the amplified contour is improved; meanwhile, drawing time is shortened. In addition, the distance between the painter and the drawing board is limited through a mark, the eye blocking unit is arranged, and especially a radiation point is arranged, so that the point of sight and the sight distance of the painter are kept fixed relatively, and picture amplifying stability is ensured. The point-radiation mirror-image positioning amplifier for contour drawing is scientific and reasonable in design, convenient and accurate to use and suitable for contour positioning and amplifying for sketching and color sketching of urban building landscapes.

Description

technical field [0001] The invention belongs to drawing tools, in particular to a mirror positioning amplifier for point radial contour drawing. Background technique [0002] Sketching, sketching, and color sketching are usually divided into two steps: first, the painter uses pencil lines to accurately draw the outline of the drawn body (the length, width, and height of the large body and partial body) on the drawing paper; On the basis of the outline, black, white, and gray tones are used to add light and shade to express the three-dimensional sense of space, light, and texture of the body to complete the painting. There are also forms of pure line or a combination of line and surface. [0003] Urban architecture is the painting theme of urban architectural landscape lovers. Most buildings are composed of basic cubes and spheres. Therefore, most of their outlines are vertical lines, horizontal lines, inclined lines and arc lines. A mirror positioning amplifier for contour ...

AI Technical Summary

Problems solved by technology

However, since the mirror mirror and the drawing paper are set on the same surface of the drawing board, after the measurement, the triangular magnifying ruler needs to be turned and then moved to the magnification position on the other side of the drawing board (opposite to the mirror image), which affects the stability and stability of the measurement results. Accuracy, which brings errors to the drawing of body contours

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