US1788010A - Combined sound and color motion-picture record - Google Patents

Description

Jan. 6, 1931. F. M. alsHoP 1,788,010

BIN D N ND ION PICTU ORD Filed April 13, 1927 ILM" Iillllllun "umili Fred /lshqpf,

l INVENTOR. BY @AMW @Mm/WM A TTORNEYS.

Patented Jan. e,vv v1931 UNI-TED STATES PATENT oFFlcE FRED n. Risso?, or ROCHESTER, NEW YORK, AssIeNon 'ro EASTMAN xonnx conrANY,

or ROcHRsrER, Nnw YORK, A CORPORATION or NEW YORK UOIBINED BOUND AN D COLOR MOTION-PICTURE RECORD Application med April 13, 1927. Serial No. 183,337.

l 16, 1911. This process involves the use of a support having a sensitive material upon one surface and having a lar e numberof minute lenses `formed in the ot er surface. rlhese lenses may be of spherical'or cylindrical form.

A. motion picture lilm adapted for this process may be used for the reproduction of sound by a kno-wn process wherein a photographic record corresponding to a sound record is formed in a narrow band lengthwise of the ilm, but it is necessary in reproduction to pass light rays through the iilm. Since the rear surface ofthe film is irregular, undesirable noise is introduced into the reproduced sound,` this noise taking the form o1? a sustained note il' the minute lenses are of uniform size and spacing. y

This noise may be avoided by leaving a portion oi the surface plane in a narrow band lengthwise of the kn.

Reference will now be made to the accompanying drawing in the several. figures or' which the same reference characters denote thesame parte.

Figs. 1, 2 3 and 4 are, res ectively, views of films embodying. different Orms of my invention.

Fig. 5 is a section on line 5--5 of Fig. 1.

Fi 6 is a similar section showing a slight modi cation.

Figs. 7 and 8 show films embodying still other forms of my invention.

Fi 9 is a section on line 9-9'of Fig. 7 showing developed images.

My invention is shown as embodied in a film in the form of a long band such as is usual in motion picture work having perforations 1 along each border and having upon one surface a sensitized emulsion 2. The support 3 is preferably lof cellulose acetate but maybe of an plastlc composition including a cellulosic erivative such as a cellulose ester or ether, viscose or the like. Uponthe surface opposite to the sensitive emulsion there are formed in a band or area 4, longitudinallyl of the vfilm, a series of minute lenticular elements. In Figs. 1 and 5 these elcments are in the form of convex ridges or semi-cylinders 5 longitudinally of the film. In Fig. 2, they take the form of symmetrical convex protuberances or lens'lets 6. In Fig. 3, they are convex ridges or semi-cylinders 7 transverse of the film. The portions in each' case does not extend the full width of the film but there is left on at least one side thereofa plane portion or band 8, shown in Figs. 1, 2 and las being between one row of perforations 1 and the lenticulated band 4.

ln Fig. 4 is shown a known type of film having a single central row of perforations 11, the portions between the successive perforations being utilized es icture areas.

ln all of the figures t e sizes of the protuberances are very much exaggerated for the sake of clearness.

Along one border of the last described film is left a smooth band 12, the rest of the rear surface of this" film being covered with lenticular elements, here shown as transverse convex ridges lor semi-cylinders 13.

@ne entire surface of the film is usually vcovered with emulsion as shown in Fig. 5,- but if desired, the emulsion may be coated only opposite `those portions which are intended for sound or picture records as indicated at 9 in Fig. 6.

ln Figs. 7, 8 and 9 are shown views of' another type of film having a single row of perforations 21 along one border only, the sound record area 18 being along the other Sfl border. All of the film is lenticulated except the part left smooth as this is simpler in manufacture. As shown in Fig. 7 this lenticulatedarea 14 may include longitudinally extending convex ridges orsemi cylinders 15, or, 'asshownl at 16 inlFig. 8 they may be transverse of the film. In Fig. 9, is shown a section of film including a support 23 having a photographic emulsion 22, here shown in a developed condition and having a photogra hic picture record 19 opposite the len-l ticu ated portion 14, and a photographic Inn sound record opposite the plane portion 18.

In any case, there will be formed in the emulsion opposite the lenticulated area a color motion picture record, usually a silver image, and in the emulsion opposite the smooth area. a sound record, and the film in'- cluding the support and emulsion opposite these portions respectively constitutesl record areas for these purposeso The protuberances or ridges are preferably of the order of twenty two per lineal inillemeter, but the exact size is dependent in part on the curvature of the protuberences, the thickness of the lm and other constants of lthe optical system of which the y ilni is n part, and the size may vary Widely from that mentioned, say between ten and forty per lineal millimeter; but in all events it is so minute that the focal length of an individual lens approximates', or is of the ge order of size as, the thickness of the I use the word lenticlated to define such a surface and I mean thereby a surface coniprising a large number of lens-like elements. contemplate as included in my invention all such modifications and equivalents as fall within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: Y

l. A film strip, for' the simultaneous re- I production of color motion pictures 'and of sounds and comprising a trans arent support having upon one surface a p otographlc layer and having in the other surface a smooth longitudinally extending area and a longitudinaliy extending lenticulated area, the lenticulations consisting of convex protuberances 'having a focal len h of the same order of magnitude as the t 'ckness of the film, the portion of the film opposite the smooth area constituting a sound record area and that opposite the lenticulated area constituting a natural color motion picture record area.

2. A film for the simultaneous reproducv tion of color motion pictures with audible accompaniment in the form of a. long continuous band comprising a support of a. 'transparent plastic cellulosic compound having upon one surface a uniform photographically sensitive emulsion .and having in the other surface two longitudinali extending portions, oneA portion being lentlculated and covering the major part of said surface, and the other portion being smooth, the lm opposits the smooth portion constituting a sound record area, and the lm opposite the lenticuiatedportion constituting a color motion picture record area.

Signed at Rochester, New York this 9th day of April, 1927.

FRED M. BISHOP.

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