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本文首先对法国透视仪作了初步剖析:介绍了它的设计原理和具体构造,推导了法国透视仪上的刻度方程式,并指出了法国透视仪存在的若干缺点和错误。其次,为研制我国自己的透视仪提出了我个人的设想。我们的透视仪具有以下一些优点:机构简单,沿透视尺所画直线保证汇交于一点;尺面刻度简单;灭点位置明确,调整定位方便;并能取代丁字尺的作用,画水平线,配合三角板,又能画铅垂线。
In this paper, we first make a preliminary analysis of the French perspective: introduced its design principle and specific structure, deduced the scale equation on the French perspective, and pointed out some shortcomings and mistakes of the French perspective. Secondly, I put forward my own ideas for developing my own perspective instrument. Our fluoroscope has the following advantages: The mechanism is simple, along the line drawn by the perspective of a straight line to ensure that the exchange of a little; ruler scales simple; clear off-point position, easy positioning and adjustment; and can replace the T-square effect, draw the horizontal line, with Triangle board, but also draw plumb lines.