US1190071A - Apparatus for projecting radiant energy. - Google Patents

Description

. w. P. ADAMS. APPARATUS FOR PROJEC TING RADlANT ENERGY.

I APPLICATION FILED NOV. 16. 19- 1,1 90,071. Patented July 4, 1916.

M'rr/V $53: I I INVEAMv UNITED STATES PATENT-curios,-

WALDO I. ADAMS, OF SYRACUSE, NEW YORK.

APPARATUS FOR PROJECTING RADIANT ENERGY.

To all whom it may concern:

Be it known that I, VVALno I Aimius, a citizen of the United States, and resident of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in. Apparatus for Projecting Radiant Energy, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact This invention relates to the projection of radiant energy en' anating from the incandescing filament of an electric lamp and refers more particularly to means for utilizing the energy of certain invisible radiations that are not transmissible through ordinary glass. In other words, the function of my invention is to utilize the radiant energy of light, emanating from an incandescent electric lamp having its incandescing filament in and uniformly around the axis and adjacent to the. focus of powerful reflecting media, with the lamp bulbor envelop capable of transmitting therethrough certain F invisible radiations of high frequency and short wavedength so that the resultant radiant energy can be used in photography, printing and allied arts and also in therapeutical and pathological worl.

In the drawings, I igurel represents, diagrammatically, one form of apparatus for carrying out the object stated. Fig. 2 is an enlarged diagrammatic view of one form of lamp filament.

Inthis instance, the source of light-1.- is centered in the axis and focus of the reflector andisjnclosed within a hollow bulb or tube 2 of rock crystal, quartz or other substance capable of transmitting therethrough definitive blue, violet and ultra-violet radiations. The source of light is arranged in and uniformly around the focal axis of a reflector '3 which is of such size and form as to reflect and concentrate the radiations within and upon a lens or screen 4 of relatively small area and located in the focal axis of the reflector preferably between the focal point and source of light, said lens or screen being also made of rock crystal, quartz or other substance capable of transmitting therethrough radiations of high frequency and short wave length. The

. lens or screen .-4. is supported in a suitable frame, or housing -5 of metal or other suitable material which is preferably secured to and incloses the open end of the Specification of Letters Patent.

Patented July 4, 1916.

Application filed November 16, 1914. Serial No. 872,403.

In some uses, the lens or screen.

clouded in such manner as to filter out certain radiations such as those of low frequencies and long wave lengths. The term invisible radiations is used in its technical sense as indicating those.

rays which do not produce the effect of vision upon the eye, as distinguished from the visible or luminous rays, and while it may be true that quartz is the only substance known at present to be capable of transmitting tlicrethi'ough the invisible 'adiations of higher frequency than the violet rays, such for example as ultra violet radiations, it is not to be assumed that other substances may not be discovered to perform the same functions as quartz, and it is-for this reason that applicant does not wish to limit the present invention to the use of quartz as an inclosing medium for the inca-ndescing filament. On the other hand, it may be possible to use rock salt as an inclosing medium for the incandescing filament in transmitting the radiations of lower frequency than red rays, such for example as infra red, and, therefore, the invention is not limited to the use of any particular material for the inclosing medium so long as it is capable of transmitting therethrough any of these invisible rays. Furthermore, as will be obvious from the foregoing description, this particular lamp may be used for projecting or transmitting invisible rays with or without the visible rays and indedeparting from the spirit of this invention.

The term fixate nucleate light is'used throughout the specification and claims to briefly define an electrically incandescing filament capable of producing a highly concer rated source or nucleus of light at or near the fixed focal point of'a reflector.

What I claim is:

1. In an apparatus of the character described, the combination of a fixate nucleate light, and an inclosing medium therefor including a material that will permit the passage of invisible radiations therethrough.

2. In an apparatus of the character described, the combination of an electrically incandescing filament and an inclosing medium therefor including a material that will permit the passage of invisible radiations theret'hrough.

3. In light-projecting apparatus, the com-' bination of a metallic reflector, and an in randescent electric lamp producing ii iii:- ate nucleate of light of high intensity in and uniformly around the focal axis of the reflector adjacent the focus thereof, said light having an enveloping medium capable of transmitting therethrough certain invisible radiations of such light.

4. In an apparatus of the character described, the combination of a reflector, a iixate nucl late light at or immediately adjacentthe focal point of the reflector, and an inclosing' medium for said light includ inn :1. material that will permit the passage offinvisililc radiations therethrough.

5. 1n lightproiecting apparatus, the combination of a. converging metallic reflector, and an incandescent electric lamp producin a fixate nucleate of light of high intensity in and uniformly around the focal axis of the reflector adjacentthe focus thereof, said lamp having a light-enveloping medium capable of transmitting therethrough the visible and certain invisible radiations.

(i. In an apparatus of the character de scribed, the combination with a concentrating reflector, of an electrically incandescing filament located at or innncdiately adjacent the Focal point of the reflector, and an inclosing medium for said iilalnent including a material that will permit the passage of invisible radiations therethrough.

T. In light-projecting apparatus, the coinhination oi a metallic reflecto a lens coaxial therewith and in the path of the reflected rays, and an incandescent electric lamp producing a iixate nucleate light of high intensity in and uniformly around the focal axis of the reflector adjacent the focus thereof, said lamp having a light-enveloping medium capable oi transmitting therethrougrh radiations ot hoih higher frequency than violet radiations.

E5. In an apparatus of the character descrilied, the combination of a metallic relicctor, a fixate nucleate light 01 high intensity in and uniformly around the local axis of the reflector adjacent the focus thereof, and a. light-inclosing medium eapahle of transmitting therclln-ough invisible radiations of such light.

9. ln 1ight-prejecting apparatus, the combination of a converging metallic roliector, a lens co-axial therewith and near the focus of the reflected rays, and an incamlcscent electric lamp prmlucing a fixate nucleate light of high intensity in and uniformly around the focal axis of the reflector adja cent the focus thereof, said lamp having a light-enveloping medium capable of transmitting therethrough certain invisible radiations of such light.

10. In light'projecting apparatus, means for concent ating and projecting hy reflection the visibile and invisible radiations enninating from a nucleate of an incandescent electric light.

In witness whereof I have hereunto set my hand this 11th day of November 1914.

ivatno r. ADAMS. l l itnesses H. I Cimsii, Amen M. CANNON.

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