US3711187A

US3711187A - System of multiple objectives

Info

Publication number: US3711187A
Application number: US00061995A
Authority: US
Inventors: La Parra L De
Original assignee: EMPRESA NACIONAL OPTICA SA
Current assignee: Empresa Nacional De Optica Sa es; EMPRESA NACIONAL OPTICA SA
Priority date: 1970-02-07
Filing date: 1970-08-07
Publication date: 1973-01-16
Anticipated expiration: 1990-01-16
Also published as: ES376370A1; CA955439A

Abstract

A system of multiple objectives having an interior element having radial guideways. Objectives are mounted movably in the guideways. A rotary ring causes the simultaneous approaching or separation of all the objectives. The ring has an internal surface of cams corresponding in number to the objectives and springs urge the objectives against the cams. An external key operates the rotary ring. A circular shutter diaphragm is provided with section cuts according to the order of projection and is activated from the outside through an adequate transmission. A screen has as many openings as there are objectives, in order to obtain individual bundles of light rays corresponding to each objective.

Description

United States Patent Adiego de la Parra 1 1 Jan. 16, 1973 54] SYSTEM OF MULTIPLE OBJECTIVES 947,971 2 1910 Konig ..350 247 [75] Inventor: Luis Antonio Adiego de la Parr Madrid Spain Primary Exammer-Dawd Schonberg Assistant Examiner-M1chael J. Tokar [73] Ass1gnee: Empresa Naclonal De Opt1ca, S.A., Atmmey wendemth Lind & Ponack Madrid, Spain [22] Filed: Aug. 7, 1970 [57] ABSTRACT [21] A No; 61,995 A system of multiple objectives having an interior element having radial guideways. Objectives are mounted movably in the guideways. 'A rotary ring causes the [30 Forms Applicat'on Pnomy Data simultaneous approaching or separation of all the ob- Feb. 7, 1970 Spain ..376,370 jectives. The ring has an internal surface of cams corresponding in number to the objectives and springs U.S. urge the objectives against the cams An external key [5 Cl. u. operates the rotary ring A circular hutter Field of Search 5 1 37-39, is provided with section cuts according to the order of 350/145, 156; 95/38; 351/5 projection and is activated from the outside through an adequate transmission. A screen has as many [56] References cued openings as there are objectives, in order to obtain in- UNITED STATES PATENTS dividual bundles of light rays corresponding to each ob ective. 689,994 l2/l90l Spooner... ..95/38 2,861,484 11/1958 Rance 350/247 2 Claims, 4 Drawing Figures PATENTEUJAMSIHYS 3.711.187

Invenlor LUIS ANTONIO ADIEGO DE LA PARRA SYSTEM OF MULTIPLE OBJECTIVES The present invention is a system of multiple objectives of projection able to project several images onto a screen with the images being different from each other but also able to superimpose them having a common center for all of them, so that the images can be seen individually or simultaneously, through an interposition of a shutter which only lets the light through which comes from the diapositive or diaposi'tives which are desired to be seen, in order to thus obtain effects of fusion of images, linking of images or movement.

An object of the invention is to provide for each projection distance a determined separation between objectives and the system foresees the possibility of graduating this separation simultaneously for the different objectives, through only one external command.

With the above and other objects in view which will become apparent from the detailed description below, a preferred embodiment of the invention is shown in the drawings in which:

FIG. 1 is a cross-section of the multiple objective according to the invention showing only objective,

FIG. 2 is a plan view of the shutter diaphragm.

FIG. 3 is a view on section line A-B of FIG. 1 and FIG. 4 is a view on section line C-D of FIG. 1 showing a preferred embodiment with four objectives and a part of the figure removed showing two of such objectives.

The objective is composed of a cylindrical body 1 on which are assembled the elements of the system. Part of it is a disc 2 on which there are as many radial guideways 3 as the system has objectives 4, and on these guideways slide in both directions the mountings 4' which carry the lenses. The mountings are in tangential contact with a rotary ring 5 which forms on the inside as many elevations or cams 6 as there are objectives 4.

On the opposite point on these mountings act some springs 7 which ensure that there is a permanent contact of the mountings with .the internal surface of the ring 5. When this ring 5 rotates, the cams 6 act simultaneously upon the mountings 4 when passing over them, thus moving the objectives closer in an identical proportion or measure overcoming the thrust of the springs 7 and separate by the action of these springs 7 when surpassing said cams 6.

From the outside command 8 the ring of cams 5 'is operated at will by means of a key 8' which projects directly from the command and which crosses an opening in the body 1. This operating relation could be also obtained by any other appropriate means, such as screws, etc.

Diagram 9 is a laminated disc of which one or more radial sectors, in this case one of have been eliminated according to the projection order desired, and this disc is made to turn from the outside through an adequate transmission 9'.

In the above described object there can be or course modifications of form, dimensions, proportions and materials without departing from the essential invention.

I claim:

1. A system of multiple objectives comprising a cylindrical body, a vertical wall inside said body having an opening in the shape-of a cross, the arms of said cross constituting radial guides, four equal objective assemblies having rests lodged in said radial guides capable of moving along said guides simultaneously, a ring element having an inner surface forming four equidistant cams, said ring element being mounted on said cylindrical body for manual operation, springs urging said cams to permanent contact with said rests, a shaft in the center of said opening of the inner vertical wall upon which said springs are mounted, the expansion of said springs pushing each of said four objectives against said ring so that when said ring turns' and each inner cam passes over each objective it pushes said objectives simultaneously toward the interior of said cylindrical body and overcoming the resistance of the central springs, the objectives inove simultaneously along said radial guides in the direction to approach said shaft.

2. A system of multiple objectives, according to claim 1, wherein a circular seal diaphragm in which a 90 sector has been cut or suppressed is mounted on said shaft in a plane perpendicular to said shaft and near said objectives between said objectives and the light focus. Y

Claims

1. A system of multiple objectives comprising a cylindrical body, a vertical wall inside said body having an opening in the shape of a cross, the arms of said cross constituting radial guides, four equal objective assemblies having rests lodged in said radial guides capable of moving along said guides simultaneously, a ring element having an inner surface forming four equidistant cams, said ring element being mounted on said cylindrical body for manual operation, springs urging said cams to permanent contact with said rests, a shaft in the center of said opening of the inner vertical wall upon which said springs are mounted, the expansion of said springs pushing each of said four objectives against said ring so that when said ring turns and each inner cam passes over each objective it pushes said objectives simultaneously toward the interior of said cylindrical body and overcoming the resistance of the central springs, the objectives move simultaneously along said radial guides in the direction to approach said shaft.

2. A system of multiple objectives, according to claim 1, wherein a circular seal diaphragm in which a 90* sector has been cut or suppressed is mounted on said shaft in a plane perpendicular to said shaft and near said objectives between said objectives and the light focus.