SU1332254A1 - Polychromatic linear visualizating diaphragm of a shadow device (its versions) - Google Patents

Abstract

The invention relates in particular to devices for studying optical inhomogeneities in transparent media. The purpose of the invention is to ensure the uniqueness of decoding the color image of the object of study and the expansion of the color gamut in it. The diaphragm is made of. adjacent rectangular color filters of the same size 1-6. The colors of each pair of adjacent filters belong to different different triads of primary colors, and the color of each filter enclosed between the two other filters is intermediate between the colors of these filters. Rays of light passing through an inhomogeneous medium produce displaced images of the illumination: the diaphragm in the plane of the visualizing diaphragm, which causes the appearance in the plane of the image of colors different from the background. Each angular deviation of light in the object under investigation corresponds to its own color in its color image. The second embodiment of the diaphragm is shown. 2 hp f-ly, 4 Il. (L 2 3 e 5 1 /, /, /, /, / Fig, 2

Description

The invention relates to instrumentation, in particular to devices for studying optical inhomogeneities in transparent media, and can be used to study the processes of combustion, the formation and interaction of shock waves, and the like.

The purpose of the invention is to ensure the uniqueness of the decoding of the color image of the object of study and the expansion of the color spectrum in it.

FIG. 1-4 shows examples of the implementation of two variants of the proposed imaging diaphragm (in all figures the same numbers denote filters of the same color denote filters of the same color

The visualization diaphragm in the first embodiment (Fig. 1) is made in the form of rectangular color filters 1-6, which are tightly adjacent to each other, have a width equal to the width of the image of the slit illumination diaphragm.

Filters 1-6 are arranged in diagrams in such a way that the colors of each pair of adjacent filters belong to two different triads of primary colors. For example, color filters 1-6 have respectively blue, purple, red, yellow, green, and blue. The color of each filter, enclosed between two other filters, is intermediate between the colors of these filters. By intermediate color is meant the color obtained: by mixing two colors.

Thus, in this example, the colors of filters 2, 3, 4, and 5 are intermediate respectively between the colors of filters 1, 3, 2, 4, 3 5, and 6. Such a choice of filter colors eliminates the possibility of the appearance of pairs of adjacent filters whose colors are complementary.

The second variant of the imaging diaphragm (Fig. 2) includes the same set of color filters as the first variant,

The colors of each pair of adjacent color filters also differ from each other and belong to two different triads of primary colors, but such that each of the colors of one triad is in addition to one of the colors of the other triad. For example, blue red and green colors of one triad

are additional respective- tasks of the illumination image

five

0

but to the yellow, blue, and purple colors of another triad.

In contrast to the first option, the diaphragm contains one pair of adjacent filters with additional colors, for example a red filter 3 and a blue filter 6.

Another Yogramer of Secondary Vaginal Imaging Diaphragm (Fig. 3) differs from the previous one (Fig / 2) in that the diaphragm has two pairs of adjacent color filters with additional colors, for example one yellow, and a blue one. the other is magenta 2 and green 5 filters. In addition, along with color filters 1-6, the aperture includes a neutral filter 7 separating one of the filter pairs with additional colors, for example filters 2 and 5, and having a width of these filters.

The following example of the second variant of the imaging diaphragm (Fig. 4) differs from the two previous ones (Fig. 2 and 3) in that the diaphragm contains three pairs of adjacent color filters with additional colors, such as blue 1 and yellow 4, red 3 and cyan 6, green 5 and magenta 2 filters, as well as two neutral filters 7 and 8, differing in optical density not less than 0.2 in the range of optical densities 0.3-3, having a width of color filters 6 and 8 and section Yush 1x filters with additional colors in two PAQ pax, nap An example neutral filter 8 separates color filters 3 and 6, in a neutral filter 7 separates color filters 5 and 2.

Thus, in the last three examples (Fig. 2-4), the colors of the adjacent color filters in n pairs, where nos 1, 2, 3, are optional, and the filters with additional colors in n - 1 pairs are separated by neutral: filters with different optical densities and a width equal to the width of the color filters.

The imaging diaphragm works as follows.

The visualizing diaphragm is installed in the focal plane of the lens of the receiving part of the shadow device, depending on the specifically solved

45

0

55

Diaphragms in the absence of the object of study are located on one of the filters of the visualizing diaphragm (the color tone of the selected filter determines the background on which the object of study is visualized), for example, on blue 1 (Fig. 1). In this case, the image plane becomes blue.

Rays of light passing through an inhomogeneous medium build displaced images of the lighting aperture in the plane of the imaging aperture.

This causes colors that are different from the background to appear in the planes. For example, when the image of the lighting aperture is shifted to the right (perpendicular to the side edges of the filters) relative to the selected position, in the image of the object of investigation, blue-magenta mixed colors appear first (when mixing blue and purple light fluxes), then magenta (when the image of the entire lighting diaphragm hits the magenta filter 2), then reddish-magenta mixed (when mixing magenta and red light outflows), then red (at full displacement to red filter 3), then red-orange and orange mixed (at displacement from filter 3 to filter 4), then yellow (at full displacement to yellow filter, 4), then yellow green mixed (when shifting from filter 4 to filter 5), then green (when fully shifted to green filter 5), then green-blue mixed (when shifting from filter 5 to filter 6), and finally blue (when fully shifted to filter 6.).

When operating a shadow device with a diaphragm shown in FIG. 2 and installed, for example, in such a way that the image of the illuminating diaphragm in the absence of the object of study falls on the leftmost filter (blue), in the image of the object of study as the angular deviation increases (as the image of the lighting diaphragm moves to the right) appear on a blue background mixed bluish-purple, magenta, mixed reddish-purple-, red, various in purity: colors red, white, various in purity colors blue, blue, mixed

Shannas are bluish-green, green, mixed yellow-green and yellow.

When the diaphragm shown in FIG. 3, and under the same conditions for installing the diaphragm as for the diaphragms shown in FIG. one .

0 and 2, on a red background as the angular deviation of the light along the b- side increases. mixed orange, yellow, different in purity, yellow, white, different in purity

5 blue, blue, mixed bluish-purple, purple, various in brightness purple, gray, various in brightness green, green, mixed greenish-blue and blue.

When the diaphragm shown in FIG. 4 (the initial position of the image of the lighting aperture is, as in the previous case,

5 on the leftmost filter, as the magnitude of the angular deviation of light on a blue background increases, different purities appear in yellow, mixed orange, red, different in brightness red, gray, mixed bluish-green, green, different in brightness in green ,

gray (differing in brightness from filter gray 8, various (in brightness) purple, purple.

The proposed principle of choosing and arranging color filters in a linear visualizing diaphragm of a shadow instrument can be extended to the choice and location of filters in a ring visualizing diaphragm of the same instrument. Thanks to this choice, all colors in the image of the object of study are quite different from each other and each angular deviation of light in the object, the study has its own color in its color image, which ensures the uniqueness of the decoding of this image and the wide color gamut in it.

0

0

five

0

55

Claims (2)

1. Multicolor linear visualization diaphragm of the shadow device, made in the form of rectangles next to each other of the same 5 13 sizes of color filters, characterized in that, in order to ensure the uniqueness of decoding the color image of an object, to analyze and expand the color gamut in it, the colors of each pair of adjacent filters belong to two different triads of primary colors, and the color of each filter enclosed between two other filters Is intermediate between the colors of these filters. 2. Multicolor linear visualizing diaphragm of the shadow device, made in the form of adjacent rectangular color filters of the same size, which are equal in size to each other I I I I I 0 five eight Since in order to ensure uniqueness in deciphering the color image of the object of study and expanding the color gamut in it, the colors of each pair of adjacent color filters belong to two different triads of primary colors, each of the colors of one triad is complementary to one of the colors of the other triad and the colors of adjacent color filters in n pairs, where n 1, 2, 3 are additional, and filters with additional colors in (n - 1) pairs are separated by neutral filters with different optical densities andIrene, color filters of equal width. Fig, 1 J V 7 27 56 /. /. /. /. / / I / 1/1 / Y / m I I / FS / g. 5 / AT 3 8 6 57 I I I I I I FIG Compiled by V. Kravchenko editor A. Vorovich Tehred M. Khodanich Proofreader S., Cherni Order 3828/41 Circulation 521 Subscription VNSHPI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4