Does anyone know the representation of cameras in CAD papers?

The graphics of the camera in CAD drawing are a trapezoid and a rectangle, and their short sides are touching.

CAD engineering drawing is the smallest and fastest drawing tool, which supports translation, zooming, full-scale browsing and drawing merging, supports dwt, dwg, dws, dxf and other formats, and can also share drawings with friends. It is a very good drawing tool.

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As an outstanding achievement of engineering technology, CAD technology is widely used in various fields of engineering design. The development and application of CAD system has profoundly changed the traditional product design method and production mode, and produced great social and economic benefits.

In design, computers are usually used to calculate, analyze and compare many different schemes to determine the best scheme; All kinds of design information, whether digital, literal or graphic, can be stored in the internal memory or external memory of the computer and can be quickly retrieved; Designers usually start with sketches, and the heavy work of turning sketches into working drawings can be handed over to computers.