US1701698A - View analyzer - Google Patents

Description

Feb. 12, 1929. 1,701,698

A. F. sHQRE VIEW ANALYZER Filed July 10, 1926 J Z l Z ATTORNEY Patented Feb. l2, 1929.

' UNITED STATES' ALBERT F. SHORE, OF NEW YORK, Nr. Y.

VIEW ANALYZER.

`Application filed July 10, 1926. Serial No. 121,506.

This invention rrelates to view analyzing devices and more particularly to devices of this class as disclosed in my co-pending application Ser. No. 111,150, filed May 24, 1926.

`The main object of this invention is to provide a device of'tliis class Which is adapted to give a comparatively greater lateral displacement of visual rays per unit Weight ofthe optical shifting members, than that ofthe specific form illustrated in said application, and 'another object is toprovide a device embodying a double refiecting element Which can be conveniently arranged kin fixed relation to the holding' elements and shiftable with the same for a selected purpose. My invention preferably embodies a' rhombical or double prismatic element, or its equivalent, including tWo inclined surfaces, one forreceiving and the other'for transmitting visual rays to the human eye. The said prismatic element or 'double refiecting member is shovvn arranged fora rapid continuous shifting of the receiving surface, preferably by rotation of the same about an axisin the field and dif rection of vision of the eye.

Other features of the invention not hereinbefore mentioned will presently be described with reference to the drawing accompanying' and forming part of this specification, and in which: y y

vFigure l is a front elevation of one form ofmy improved view analyzing device,

lig. 2 is a horizontalv section of the same, taken ou the line 2 2 of Fig. 1. y

Fig. 3 is a rear elevation of a-portion of the same, and n Fig. 4 illustrates diagrammatically the paths followed by rays `of light emanating from both near and vdistant objects crossing the rotating prism. I

Like characters of reference refer to like parts in all the figures of the drawing. n

vReferring tothe drawing, the. numeral 1. denotes the frame of my improved view anl alyzing device, and said frame may be of any suitable form and preferably embodying a handle, such as 2, by means of Which the device can be held or supported by the hand. The frame 1 preferably supports a bearing, such as 3, which ordinarily is ay ball bearing as illustrated. f Journaled in said bearing by means of the balls 5 is a ringI 6 containing one of the two ball races 7, and which ring is secured tov and in operation forms part of the casing 12, vThe latter is preferably annular* and conical at onepart indicated,

12 and serves to house the double reflecting member 9 which isthe double prismatic element or rhombical form hereinbefore mentioned. The said member 9 has aninclined ray-transmitting surface 9, an outer surface 10' and an inner surface 10` parallel to veach other and to the front of the casing 12 and substantially at45 degrees to the surfaces 9 and 9. The casing 12 is provided With space 12 of suitablewidth and configuration toV house themember 9 yvvhich is held in said Space by suitable means, as by cementing. it

at the sides 9 leaving a space 2 between groove or belt-carrying portion, such as 22.

It Will be noted that the casing 12 is adapted to be rotated about its axis bythe turning of the ring 6v in the bearing 3. Such turning may beeifected in any suitable Way, as by means ofr the pulley 23, here shown as groove'd. Said pulley 23 is secured to a short shaft 24suitably journaledin the frame 1, and turned by means of the crank 25, op erated by its handle 26. There is a belt, such as 21, shovvn in the drawing as round, carried around said pulley 23 and the annular belt-carrying portion orl groove 22 of the member 6, so that the said member 6 and ycasing` 12 are caused to rotate on' turning the ciank'25. n The handle 2 of the device vhas a portion 27't'o guard the hand from the pulley 23 When the latter is turned. On the ring' 4 of the bearing 3 is secured an annular-plate 28 having an eyeY lapertureA 29 which is held n e'xt to Vtheeye ofthe operator when using the device.

Referring to Fig. 4, the numeral 30 designates a diagram of the parallel-sided refractor shown at 9 in Fig. 2, with a set of incident light-rays, of which the full lines 31 and 31', respectively, indicate the parallellightrays coming in from the infinite distance, Whereas the dotted lines 32 and 32', respectively, indicate two angular light-rays issuing from a nearby point 33. The lovverl ends of the full lines at 34 and 34 in'dicatethe position if the bentl lightera'ys indicated by' turned by means of its handle` 26, Which V causes the rotation of the shaft 2li and pulleyy 23, which by means of the belt 21 brings about the rotation of the portion 22, the ring 6 and casing 12 With thedouble prism there in, at an increase in rate. This rotation must be continuous and rapid enough to allow the visual rays to pass to the eye Without sensible interruption. I The path of a light ray is indicated at A, coming from an object viewed and meeting the surface 9 at B, thence to the surface 9 at C, and thence along the line D to the eye. Other light rays will talre similar paths at different distances from the one de scribed, as the view may require, as shoivnin diagram, Fig. 4l.

In a view containing a number of foreground objects that partly mask those in the background, the final result of my device is to effect a blurring out or apparent disap-y pearance of the foreground objects. The background objects are clarified and stand out more distinctly, as, for instance, in a landscape containing numerous bushes and trees in the foreground vvhiehmask buil-dings, Works, men, animals, or other objects in the background, on viewingthe" same through the rapidly and continuously revolving view-analyzer, the brushes and trees in y the forepartl of the view are reduced to a mere haze through which the buildings, works, men or animals at the rear are clearly seen. This general operation is even more fully explained in my before-mentioned application, to which reference maybe had.

It is understood that While I have shown a double right-angle refractingprism as the vital principle of my view-analyzer, Which is in harmony With the higher standard of optical practice, ordinary niirrorreectors may be substituted for these, particularly those of the speculum variety, which have the same degree of optical accuracy as the refractortotal reflecting prisms.

Vhat I claim is:

1. A view-analyzer, embodying a double reflecting element adapted to receive and transmit visual rays, and mechanism for causing a rapid continuous shifting of the receiving portion of said element. i i 2. A viewanalyzer, embodying a double reflecting member adapted to receive and transmit visual rays on given axes respectively, andmechanism for causing a rapid continuous shifting of said receiving portion relative to the transmission axis.

3. A view-analyzer, embodying a movable casing having an eye aperture located in its axis of movementl and a front opening ec centric to said axis, double reflecting means in said casing including tivo inclined surfaces respectively opposite to the front opening and eye aperture, and means for rapidly and continuously rotating the casing and its contents on said axis.

et. A view-analyzer, embodying a casing having an eye aperture on one side and a receiving opening offset from it on the opposite side, a double reflecting prism of transparent material housed in the casing and arranged With an inclined lightmeceiving surface opposite saidreeeiving opening and an inclined lighttransmitting surface opposite the eye aperture, and mechanism for rapidly and continuously rotating said casing and double prism about the axis of the eye aperture.

5.1A view-analyzer, embodying a casing having a journal portion, an annular beltcarrying portion and an eye aperture onthe same axis, and an opening on the side opposite to the eye aperture and eccentric to the axis thereof, a double total reflecting prism in said casing having two inclined surfaces one opposite said front opening and one opposite the eye aperture, a frame having a bearing in which, the` journal portion of the casing can rotate, a pulley rotatably mounted on said frame in alinement to the belt-carrying portion of the casing, a belt froml said pulley to said carrying portion, and means for rotating said pulley.

In testimony whereof, I aiix my signature.

ALBERT F. SHORE.

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