SU71470A1 - Anaglyph drawing device to existing terrain plan - Google Patents

Description

Instruments for drawing an anaglyph to an existing terrain plan located on a tablet adjacent to a sheet of anaglyph paper, using a micrometer to introduce a parallactic shift to the relative position of the bypass mark and pencil, are known.

The proposed device differs from those known in that the pencil is mounted on a rod attached to a frame equipped with a micrometer carrying a bypass mark and mounted on a horizontal rail slide that can move freely on the rollers according to the plan drawing parallel to itself.

The proposed device makes it possible to mechanize the process of drawing up the anaglyph to the existing terrain plan and is based on a method of gradually transferring from the terrain plan to anaglyph all the elements of the situation and contour lines for each specific level of the terrain with their corresponding parallactic displacement relative to this plan. .

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The calculation of the parallactic comp. P for each defined level of terrain is made by the known formula: / I

AR b

Ji t

where d is the magnitude of the optic base in mm, typically taken at 65 mm;

/ - distance from the observer's eye card, usually taken in 250-300 lsh;

h t

 excess or understating

of the transferred map elements above the initial plane at a given height scale in mm.

When choosing the height of the anaglyphic map, it is necessary to proceed to ensure that the maximum value of the parallactic displacement Lp does not exceed the value of 7 mm, which is critical for stereoscopic perception for our vision. Points with a parallactic displacement of 7 mm more vosprnnima2P

№ 71470

as horizontal points.

The magnitude of the altitude scale is usually determined by the formula: t max 35 X L. акс ax, where 11 m a, c is the maximum height variation within the map sheet.

FIG. 1 shows a top view of an anaglyph drawing instrument to the existing plan, and FIG. 2 - front view of it. - The device moves parallel to itself ... according to the plan on rollers fixed on the axis /.

On the / axis, the slider 2 of frame 3 moves freely, a magnifying glass 4 with a bypass mark is attached to the magnet screw by means of a micrometric screw 5. and a rod with a pencil 6j tracing the outline elements of a situation situation around the attached sheet of paper with anaglyph of this terrain plan with parallax offset set for each specific level of terrain by shifting the magnifying glass with the micrometer screw.

Subject invention

An anaglyph drawing device to an existing terrain plan located on a plate next to an anaglyph paper sheet, using a micrometer to introduce a parallactic shift to the relative position of the bypass mark and a pencil, characterized in that the pencil 6 is mounted on a rod attached to frame 5, equipped with a micrometer carrying a bypass mark and mounted on a slider 2 a horizontal guide that can move freely on the rollers in the plan drawing parallel to itself.