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Questions and Answers

Project
proposal

Inventor
GOLENKO
on rest

(43) Date of international publication:
20th March 2003 (20.03.2003)

(10) Number of international publication:
WO 03/023492 A1

            PCT

20th March 2003 (20.03.2003)

(51) International patent classification 7:
G02B 27/22
(21) Number of International Application: PCT/RU02/00418
(22) Date of International Application:
11 September 2002 (11.09.2002)
(30) Priority Information:
2001124759 September 11, 2001 (11.09.2001) RU

(71) Applicants(for all states stipulated except for (US):
Sergey Petrovich MIKHAILOV
[FINANCIAL AND INVESTMENT CORPORATION «LEADING»
(71) Applicant and
(72) Inventor: Georgy Georgievich GOLENKO

(74) «SOJUZPATENT»; 103735 Moscow, ul. Ilyinka 5/2 (RU) [«SOJUZPATENT», Moscow (RU)].

(54) Title: DEVICE FOR PRODUCING THE Three-DIMENSIONAL IMAGE OF A SINGLE TWO-DIMENSIONAL image

                              Fig.1

      Fig.2

(57) Abstract: The inventive device for producing the free-dimensional image of a single two-dimensional feature comprises a lens raster embodied in such a way that the single two-dimensional feature whose image is to be produced can be disposed at a distance (A) from a picture plane. The lenses of said raster have a variable radius of curvature on sagittal and meridian sections. The raster comprises two and more (n) alternating lenses having focal lengths of f1, f2, ...,fn. Said lenses are disposed on the same level of main planes. Spaces D between lenses of the raster are comparable with the dimensions of the image resolution element of the single two-dimensional feature, the focal length f1=A, the focal lengths f2...,fn<A.

(AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR),
patent OAPI (BF, BJ, CF, CG,
CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
In respect of two-character codes and abbreviations, language
codes and other abbreviations see “Explanations for codes and
abbreviations” published at the beginning of each regular
edition o f RST Bulletin.

Published
With report about the international search.

DEVICE GENERATING THREE-DIMENSIONAL IMAGE
OF A SINGLE TWO-DIMENSIONAL ENTITY

Technique Field

The invention is attributed to the sphere of optics, and to be more accurate, it pertains to the device generating three-dimensional image of entities.

The Previous State of the Arts

The device generating three-dimensional image of entities has been known, which contains the following components:
a device for arrangement of the image source and a lens raster with lenses, which have variable curvature radius in saggital section (See Patent of the Russian Federation No. 2098855 ?1 dated 05.10.95). This device gives the opportunity to obtain three-dimensional image on the principle of quasi-stereo mates formation. In this description saggital section means horizontal section.
Disadvantage of this device is impossibility to form three-dimensional image in front of the screen because the mechanism of image formation envisages only virtual image behind the screen, and the real part of image in front of the screen lacks.
The device generating three-dimensional image of entities with a source of image and optical lens rasters, the main and the accessory one, high-aperture in meridian section, and at that focal plane of the accessory raster is located in the vicinity of the image generated by the main raster (See Application for Patent of the Russian Federation No. 98115465/28 dated 10.08.98). In this description meridian section means vertical section.
This device gives the opportunity to obtain three-dimensional image with outcome before the screen, but due to the lack of variable focal power of raster in saggital section the image in horizontal section has scale constancy, which is unnatural for real three-dimensional image (lack of quasi-parallax).
Besides, moiré may appear in the watched image due to the existence of two linear structures located close to each other.
The device generating three-dimensional image of entities containing the means for arrangement of the image source and optical lens raster with lenses, which in saggital and in meridian section are made with variable curvature radius, this raster being placed within the certain distance from the image source (See Application for Patent of the Russian Federation No. 98108927/28 dated 07.05.98) is the most similar to the device proposed herein.

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