US2155093A - Reflex reflector - Google Patents

Description

April 18, 1939. M. KAPLOWITZ 2,155,093

REFLEX REFLECTOR Filed Sept. 50, 1956 I INVENTOR M- KAPZow/Tz'.

BYjW

ATTORNEY Patented Apr. 18, 1939 2,155,093

UNITED STATES PATENTOFFICE REFLEX REFLECTOR 1 Morris Kaplowitz, Brooklyn, N. Y., assignor to Microphone Corporation of America, Brooklyn, N. Y., a corporation of New York Application September 30, 1936, Serial No. 103,315

" 7 Claims. (Cl. 88-82) One object of this invention is the provision of edge of the opening l3. The inner surface of the a multiple reflector adapted to be mounted on concave floor I1 is mirrored by means of chrome vehicles but which may, however, also be used on plating or in any other desirable manner. Thus, flxed supports such as warning signs on highwhen assembled, the registering of the concave ways, advertising signs, etc., having the novel floors I! in the depressions l5 provides fixed recharacteristic that the device is provided with a tention of the cups id in the housing. Any suitplurality of unitary reflector units all contained I able means, such as screws passing through the within a housing or other equivalent mounting. walls II and I2, notshown, may be provided to Another object of the invention is the provision further lock the two sections of the housings to- 10 of a reflector constructed along the lines mengether, if desired. 10 tioned, which is optically eflicient, simple in con- In the form shown in Figure 3, similar parts are struction, and inexpensive in cost of manufacsimilarly numbered to that shown in Figure 2. ture. However, in this modification, the front wall 2! The above and other objects will become apof 'the housing is provided with openings 22 parent in the description below, in which charwhich lack the peripheral lips I4. Also, the rear 18 acters of reference refer to like-named parts in wall 23 of this housing is flat throughout.

the accompanying drawing. In the modfication shown in Figure 4, the Referring briefly to the drawing, Figure 1 is a same housing is used as in Figure 3,,but the cup plan view of one form of the reflector. 24 comprises an enlarged concave bottom 25 Figure 2 is a cross-sectional view taken on the which serves as the mirror, and its side walls 28 line 2-2 of Figure 1. are in the form of a frustoconical shell, on the Figure 3 is a fragmentary cross-sectional view upper periphery of which the lens 20 is seated. of a modified unitary reflector element and its In the modifications shown in Figures 5, 6,and housing. '7, a single wall is used for mounting the lenses. Figure 4 is a similar view of another modified In Figure 5, the cup 21 is provided with the peform. V ripheral flange 28. From diametrically opposite Figure '5 is a similar view of a modified form Points on the flange 28, ears 29 project. The wall wherein the rear wall of the housing is dispensed 30 in which the lenses 20 are mounted in this with, modification, is provided with openings 3| sur- :0 Figure 6 is a similar view of a further modified rounded by peripheral lips 32. At diametric y formalso dispensing with the rear wall of the opposite points at the b of the p 32, slots are housing. cut in the wall 30 through which the ears 29 are Figure 7 is a view taken at right angles to Figpassed. I The cup 21 is secured to the wall 30 ure 5, showing the reflector cup per se. by turning the ears 29 down against the wall.

Referring in detail to the drawing, the numeral No gasket is shown in this view, although one 35 I0 indicates a housing having the front wall ll may be used, if desired, between the cup 21 and and the rear wall l2, both being provided with the wall 30. mutually telescopic flanges by means .of which In the form, shown in Figure 6, the mounting the housing is sealed. A plurality of circular- 38 is substantially similar to the front wall ll 40 openings [3 are provided in the front wall ll, 'of the housing I 0. The cup is provided with "0 and peripheral lips i4 surround these openings. a peripheral flange 34 having openings at di- The rear wall I2 is provided with depressions ametrically opposite points through which rivets l5 which are concave on the inside of the wall, or screws.35 are adapted to p'ass.- A layer of one such depression being provided for, and in relatively s material n8 as asket,

axial alignment with, each opening l3. A cylinhaving openings therein aligned with the opendrical cup it, open atthe top, and closed at the ings 31, is clamped between the flange 3| and bottom by a concave floor or base i1, is set into the wall 38 by means of the rivets 35. each concave depression l5 also in axial align- The forms shownin Figure and4 are variment with its opening I 3. The upper rim of the one modifications of a multiple reflector contained cup liis provided with a peripheral shoulder, I 8. within a sealed housing, all of which serve the no A gasket IQ of relatively soft material is mounted same optical purpose. The sealed housing form .on the shoulder I8. Each lens 20, whichisusus own in Fi e howeve y virtue of the ally a sphere of r d g1ass,'1 seated on t m r greater diameter of the reflector base 25, serves periphery of the shoulder It with the gasket I9 to increase the useful angularity of the reflector secured between the shoulder I8 and the lower so as toreflect light coming from a source lying at a more acute angle to the face of the reflector.

As spherical lenses, even though manufactured to the same specification, vary considerably in their optical qualities, it is necessary to grade a large number of lenses into groups having substantially the same focal length. All of the lenses in one reflector should possess, as near as possible, the same focal length, i. e., they should each lie at the proper distance from the mirrored base. Since, however, the lenses of various reflectors will have different focal lengths, it is necessary in the forms which utilize the cylindrical cups, that the depths of these cups, or the heights or diameters of their walls It, 21, and 33, be the same for any one reflector unit but vary as between units. In the form shown in Figure 4, such variation may be accomplished by varying the diameter of the upper peripheral opening or seat.

Reflectors of the type mentioned, constructed in accordance with the above description, may all be made highly emcient in optical properties, yet at the same time simple in construction and inexpensive in cost of manufacture. a

Obviously, modifications in form and structur may be made without departing from the spirit and scope of the invention.

Furthermore, the various unitary reflector elements including the cup and its lens, are in most of the forms illustrated, interchangeable with those in the other housings or mountings shown.

I claim:

l. A reflex reflector comprising a front wall having openings passing therethrough, a rear wall, a lens mounted in each of said openings, cups open at the top and having concave mirrored floors, the diameter of said floors being greater than the diameter of said lenses, said cupsbeing mounted in axial alignment with said lenses, said lenses being mounted in said openings between the inner peripheries of the openings and the upper peripheries of the cups, the bottoms of said cups resting against said rear wall, said rear wall pressing said cups against said lenses and said lenses against said front wall, and means for securing said rear wall to said front wall.

2. In a multiple lens reflex reflector comprising a front wall having openings therethrough, a rear wall, separate lens positioning cups having concave mirrored floors and upwardly extending peripheral walls, said peripheral walls encircling the open ends of said cups, a lensmounted in each of said openings, the front faces of said lenses projecting through said openings, the open ends of said cups being positioned over the back "faces of .said lenses, said lenses being positioned between the inner peripheries of said openings and the open ends of said cups, said lenses being larger in diameter than said open ends of said cups and said openings, said peripheral walls of said cups positioning said lenses at a substantially focused relation to said concave'mirrored floors, said cups being mounted in axial alignment with said lenses and said openings, the bottoms .of said cups resting against said rear wall, said rear wall pressing said cups against said lenses and said lenses against the inner peripheries of said openings, and a surrounding annular wall connecting said front and rear walls,

said front and rear walls being locked together 'thereby locking said lenses and said mirrored cups into a focused relation.

3. In a multiple lensreflex reflector comprising a front wall having openings therethrough, a

ends of said cups and said openings, said peripheral walls of said cups positioning said lenses at a substantially focused relation to said concave mirrored floors, the bottoms of said cups resting in said seats, said cups, said lenses, and said seats being in axial alignment with said openings, said rear wall pressing said cups against said lenses and said lenses against the inner periph-' eries of said openings, and a surrounding annular wall connecting said front and rear walls, said front and rear walls being locked together thereby locking said lenses and said mirrored cups in a focused relation.

4. In a multiple lens reflex reflector comprising a front wall having openings therethrough, a

ing concave mirrored floors and upwardly extending peripheral walls, each of said peripheral walls having an outwardly extending rim at the open ends of said cups, said peripheral walls and said rims encircling the open ends of said cups, lenses mounted in each of said openings, the front faces of said lenses projecting through said openings, the open ends of said cups being positioned over the back faces of said lenses, said lenses being positioned between the inner peripheries of said openings and the open ends of said cups, said lenses being larger in diameter than said open ends of said cups and said openings,'said peripheral walls positioning said lenses at a substantially focused relation to said com cave mirrored floors, said cups being mounted in axial alignment with said lenses and said openings, the bottoms of saidcups resting against said rear wall, said rear wall pressing said cups against said lenses and said lenses against the inner peripheries of said openings, and-a surrounding annular wall connecting said front and rear walls, said front and rear walls being locked together thereby locking said lenses and said mirrored cups into a focused relation.

5. In a multiple lens reflex reflector comprising a front wall having openings therethrough, a rear wall, separate lens positioning cups having concave mirrored floors and upwardly extending peripheral walls,said peripheral walls encircling the open ends of said cups, a lens mounted in each of said openings of said front wall, the front faces of said lenses projecting through said openings, the open ends of said cups being posisaid open ends of said cups and said openings,

said peripheral walls of said cupspositioning said lenses at a substantially focused relation to said concave mirrored floors, said cups being mounted in axial alignment with said lenses, said lens nests and said openings, the bottoms of said cups resting against said rear wall, said rear wall pressing said cups against said lenses, and

said lenses against the inner peripheries of said openings, and a surrounding annular wall connecting said front and rear walls, said front and rear walls being locked together thereby lockifig said lenses and said mirrored cups intoa focused relation. a

6. In a multiple lensreflex reflector comprising a front wall having openings therethrough, a rear wall having seats integral therewith, separate lens positioning cups having concave mirrored floors and upwardly extending peripheral walls, said peripheral walls having outwardly extending rims at the open ends of said cups, said peripheral walls and said rims encircling the open ends of said cups, lenses mounted in each of said openings, the front face of said lenses projecting through said openings, the open ends of said cups being positioned over the back faces of said lenses, said lenses being positioned between the inner peripheries of the openings and the open ends of said cups, said lenses being larger in diameter than said open ends of said cups and said openings, said peripheral walls of said cups positioning said lenses at a substantially focused relation to said concave mirrored floors, the bottoms of said cups resting in said seats, said cups, said lenses, and said seats being in axial alignment with said openings, said rear wall pressing said cups against said lenses and said lenses against the inner peripheries of said openings, and a surrounding annular wall connecting said front and rear walls, said frontand rear walls being locked together thereby locking said lenses and said mirrored cups in a focused relation.

"1. In a multiple lens reflex reflector comprising a front wall having openings therethrough, a rear wall having seats integral therewith, separate lens positioning cups having concave mir-. rored floors and upwardly extending peripheral walls, said peripheral walls having each an outwardly extending rim at the open end of the cup, said peripheral walls and said rims encircling the open ends of said cups, lenses mounted in each of said openings, the front faces of said lenses projecting through said openings. the open ends of said cups being positioned over the back faces of said lenses, said lenses being positioned between the inner peripheries of said openings and the open ends of said cups, lens nests of relatively soft material having said lenses nested therein, said lens nests being mounted between said front wall and said cups, said lenses being larger in diameter than said open ends of said cups and said openings, said peripheral walls of said cups positioning said lenses at a substantially focused relation to said concave mirrored floors, the bottoms of said. cupsresting in said seats, said cups, said lenses, said lens nests, and said seats being in axial alignment with said openings, said rear wall! pressing said cups against said lenses and said lenses against the inner peripheries of said openings, and a surrounding annular wall connecting said front and rear walls, said front and rear walls being locked together thereby looking said lenses and said mirrored cups into a focused relation. 1

- MORRIS KAPLOWITZ.

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