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Publication numberUS1277110 A
Publication typeGrant
Publication dateAug 27, 1918
Filing dateApr 16, 1917
Priority dateApr 16, 1917
Publication numberUS 1277110 A, US 1277110A, US-A-1277110, US1277110 A, US1277110A
InventorsWilliam L Patterson
Original AssigneeBausch & Lomb
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Operating-table illuminator.
US 1277110 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)





Specification of Letterslatent. latented Aug, 27, 1918.

Application filed April 16, 1917. Serial Ho. {62,285.

To all whom it 'may concern Be it known that I. ll'iLLiAw L. Parransox, a citizen of thenited States, residing at Rochester. iii/the county of Monroe, State 0f New'York, have invented certain new and useful Improvements in Operating- Table.Illulninatorsvg and Ido declare the following to be a full, clear, and exact description of the same, reference being had l0 to the accompanying drawings.' forming a part of this specification. and to the characf ters of referenceniarked thereon.

This invention relates to light projectors for Ailluminating' a restricted area, such as 16 `tliefiell of operation .of a surgeon upon a.

yat-iexit=laid uporifjan operating table placed lowlthelillumina'tor.

, f -gtjsimpomntthat the seid Qf sur sa 'opration be brilliantly illuminated wit out disturbingshadows of 1 the surgeoiils "li'andsapr .implements. ,upon"the yoperative fffieltltfand without raising the kterperature h parts beingo eratedu on, and with 0 ro the"l l uni ifiator 'which ifpermitted may e d isjji-.ivention which asi, n"'a'rtifici'al `illumination of an operaoitiiillfs adequateland 'effective as that afl da by `brightday-iight. "In the drawings: f y Figure l is a" vertical sectional elevation of4 Athis improved illu-minator as arranged over Van operatingtable, and with the d e- ,flcotedlight bea indicated b broken lines. Fig. Q isa top plan view o the illuminator removed from its ceiling supports.

In 'the illustrated embodiment 'of this. in'- *0 vention the lghtifsources and coactng optical devices ai'fill held 'to a supporting cas- `ing designedeto fpractically dust and fluid 4.prooiland pre cijably comprising a .rounded marginalivertical wall lhaviiig an e inwardly projecting horizontal flange 2, and a bottoni plate 3, detachably held to the flange 2 b v -nits A screwed upon the lower -threaded ends'fof bolts 5. AThese bolts pass at their.. upper reduced threaded ends 50 through the 'inwardly overhanging heads of brackets fixed at their bases t0 thc casing flange 2. The upper ends of the bolts: 5 are first, preferablyI passed upwardly through holes in `a ring support 7, and then pass 65 through the bracket heads above which they conditions 'arerfyully n `4 estive field or other restricted areasubstanreceive nuts 8 which when tightened securely `hold `the pendent bolts 5 and the ring 7 to the 'fixed brackets 6. The rin 7 has fas. tened to it the opposite ends o a cross bar t) which carries a central reflector 1() which may have any preferred form assuring that light rays it receives from a subjacent plurality of grouped lamps 11, shall be deflected downwardly infone or more divergent heans upon an operative field 'or area to be illuminated. The illustrated reflector 10 1s formed with two plane reflecting surfaces meeting at their inner edges to` give the le ltlector a generalobtu'se angular vform with fits apex acing downward. 'f

n The pendent'bolts 5, andthe-ring'7,carry ing the bar 9 and the reflector-florale per-A manentl fas'laenedby-A the bolt; -nl 1ts"-8, and the-brac ets 6 t themargi'na of t-liecasinl whichiisfitsel densers 17, whichja-re secured. to the detachable bottom casing plate 3 in proper focal lrelation with the lamps. In radial focal alinenient with eachcoacting lamp 11 and condenser 17 there is held to the casing wall 1 an optical objective It-outside of whicl'cis supported an adjustable mirror re- .Hector-1f) hung iliy a horizontal pivot shaft V20 to brackets 2l, fixedv to' the.' wall l. The bottoni casing plate 3 has'a cent'ral opening 22 over which is opemiblv or detilchably held 4a transparent, or translucentA plate- 23, -through \vhi h-.lhe diverging light beam or b eanis from the overhead reflector 10 may 100 pass-downward upon the operative field or area to be illuminated. and encompassed by the line 24, shownin Fig. 1 of the drawings. After opening or removing the plate f3, free access may be had through the casing 105 opening 22, tothe lamps 11 for readjusting or renewing them without removing the casing plate Il, and when this plate is removed full access is given to all of the lam s ll.

or other grouped light sources, and t ecol 110 proof, there is little chance for accumula-- acting condensing lens systems 17 which are carried bythe. plate, aml without disturbing the fixed casing parts 1, 1)., and the opt-ical elements 10, 18, 19 attached thereto,

rl`he central retlector 10. may or may not be used, lult. its use provides the two desirable central divcrging intense light beams indicated by the two ditferently directed series of cross-hatched dotted lines in Fig. 1 of the drawings, and which two central beams together cover the entire area of illumination within the line 24. This same area is covered by the diverging and convergent light beams passing downward from all of the reflectors l!) and which are directed from different points around the circle of peripheral reflectors, and consctuently the area within the line 24, aml w lich may be the field of operation of a surgeon upon a patient on the table 14, is most brilliantly illuminated and no disturbing shadows of the su'rgeons hands or implements will be east upon the operative tield since any shadows will be dissolved immediately by rer'naining unobstructed light beams from most of the light sources of the illuminator. The light sources being at some distance from the operative field the temperature of theparts operated upon will not be unduly tion on the illuminator of dust and dirt which mightfall therefrom upon the operative field and infect the patient, and the-en 'tire exterior parts or surfaces of the illuminator may quickly a'nd easily be washed or sprayed with wateror any suitable'anti-l ic fluid.

he aforesaid description makes it apparent that this invention eomprehends the use of a plurality of light sources grouped together, light collecting and projecting means for each light source arranged outside of the lat-ter, and a corresponding ilurality of deflectors arranged outside the light projecting means and the path' of the light beam from each light projecting means and bending all the light beams convergcnt-ly aml merging them together upon a common -area to be illuminated. preferred arrangement of parts. the grouped light sources or lamps are. spaced equidis; tantly nml are located directly' above the area to be illuminated, and the light beams between the lamps aml the coacting con- (lensing lenses converge laterally and the light. beams between the lens systems and the coacting reflectors diverge laterally, and the reflectors are located laterally beyond the area to be illuminated and throw laterally converging inwardly and downwardly directed divergent. light beams upon the In the common illuminated area. and the central reflector il used is located directly abdve this illuminated area and dcflects a light beam or beams directly downward there upon.

Ilaving thus described my invention what l claim aml desire to secure by Letters lateut of the United States is:

1. ln an illumnator` the combination with a plurality of light sources grouped around a central area. light collecting and projecting means for each light source arranged outside of the latter, a corresponding plurality of light (lt-fleeting elements arranged outside ot' the light projecting means and in the path of the light beamI from each light projectingineans and bending said light beams couver-gently andmerging them together upon a common area to be. illuminated, and means arranged at said central area bending the lightbeams directed inward and upward from all the light sources anddefiecting them upon the common illulni ,ited area.

2. -In an filluminator, the combination with a plurality of livht sources s aced around a central aren; o? a. plurality. o cendensing lens systems-arranged outsideof the light sources, there being one lens system for cach light source, an objective alined with each of the condensingv lens systems and projecting the light,A received from it outwgirdly, a refiector 'placed `in tlie'pathv of each of the projected light'beams and deflccting its respective beam inwardly4 and 100 downwardly, the several. beams converging from the different reflectors upon a :single f area to be illuminated, and u.' refiect'orjarranged at saideentral area bendin the'l'ght beams directed from allv the li'g t-sources 105 upon the same single illuminated area,

3. In an illuminator, the combination with a plurality of lightources greupedff around a central area, of a projectlng lens. system arrangedoutsidc of cachlight source, said lenses .projeetin their collected light rays radially iii-divergent beams, refiectors placed iu the several paths of light and defleeting said divergent beams upon a common field, and a rctleetor arranged in said central area and deflccting light rays therein from the several light sources divergeutly over the illuminated area.

4. In an illmninator, the. combination with a casing comprising a marginal portion and a detachable bottom portion, of a plurality of light sources and eoactin l' condensing lens systems secured to said. bottom within the casing, means securing the marginal ainl bottom portions of the eas-` ing together, a pluralit of objcctivesvheld by the marginal part o the casing and co- .acting with the respective condensing lenses,

i plurality ofy light sources objective, said reflectors deflecting tie light beams from all the coacting lens systems upona single area to be illuminated.

5. Inl an illumlnator, the combination .with a casing com rising u. marginal portion and a detacha le bottom portion, of a and coacting condensing lens systems secured to-said casing bottom within the casing, said bottom inwing un opening closed by a removable transparentplate, means securing 'themarginal and bottom portions of the casing together, a plurality of objectives held to themarginalr part of the casing and coacting with the respective condensing of reflectors supported b the marginal wa l of the 'casing outside o the latte'r, one reflector coactmg with each condensing lens system and the corres onding objective, said reflectors deflecting tlie divergent beams 'of light from all the coacting lens s a singlearea to be illuminate and a rclenses, a pluralt 'flcctor supported by the marginal portion of thecasmg and located above the area.

stems upon encompassed b the light sources and dey flectin the lig t-converging 4fr'omthe several light sources divergently` downward through the transparent p ate on the casing bottom.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2651301 *Nov 1, 1951Sep 8, 1953Welch Allyn IncHeadlamp for physicians and surgeons
US3263584 *Jan 21, 1963Aug 2, 1966Alos AgAppliance for illuminating and photographing a surface of an object with reflecting areas
US3518419 *Dec 28, 1967Jun 30, 1970Us ArmyProjection system for circular array of laser diodes
US4316237 *Mar 27, 1980Feb 16, 1982Yamada Iryo Shomei Kabushiki KaishaLighting fixture for use in medical operations and therapeutic treatment
US5765943 *Oct 3, 1996Jun 16, 1998AlmMulti-port projector improving the uniformity of the illuminated field
U.S. Classification362/33, 362/267, 362/268, 362/239
Cooperative ClassificationF21W2131/205, F21V21/30