Патент USA US3046872код для вставки
July 31, 1962 H. MULLER 3,046,862 PHOTOGRAPHIC OBJECTIVE MOUNT Filed Feb. 20, 1961 F.@ I IN VEQIITOR HELMUT MULLER “MAM Alforneys, ,. United States Patent _" IC€ actassz Patented July 31, 1962 2 1 . a lever at one end thereof which is engaged by the camera 3,046,862 PHOTOGRAPHIC OBJECTIVE MOUNT Helmut Miiller, Wetzlar (Lahn), Germany, assignor to Ernst Leitz Gesellschaft mit beschrankter Haftung, Wetzlar (Lahn), Germany Filed Feb. 20, 1961, Ser. No. 90,436 Claims priority, application Germany July 7, 1960 8 Claims. (CI. 95-45) release mechanism. The other end of the bolt is pro vided with a structure which is drivingly connected to a movable component such as a spring diaphragm. . In addition, one of the bolts may have an ‘axial bore therethrough to serve as a cable duct for an electrical wire which interconnects electrical components located at both ends of the guide elements. In each of the above-described modi?cations the guide The present invention‘relates to a photographic objec 10 elements are also used ‘as transmission members which tive of a camera, more particularly, to an objective having telescopic sleeve members wherein the guide elements between the sleeves to axially guide the sleeves and prevent means that no additional elements are necessary to trans mit mechanical or electrical energy from the camera cas ing to a movable component in the objective. As a result, rotative movement therebetween also function to trans the exterior diameter of the objective mount need not be’ mit adjusting movements from an adjusting member on 15 enlarged but the objective mount of this invention will per; the camera to a moveable component mounted on the ob form more functions than objective mountings of the prior‘ jective. ' ' art.- Photographic objectives for cameras have been devised which comprise a pair of'telescoping cylindrical sleeves. ~ ‘ . ' Other objects and advantages of this invention will be-> come apparent upon reference to the accompanying de~ Guide elements have been interposed between the sleeves 20 scription when ‘taken in conjunction with the following in order to axially guide the sleeves and‘to prevent rela drawings, wherein » ' tive rotative movement between the sleeves. One form of ‘ FIGURE 1 is a partial longitudinal sectional View of guide structure comprises pairs of cooperating grooves in arr-objective mount having a spring diaphragm in the objec- ~ tive and an adjusting member in the camera casing; FIGURE 2 is a cross-section taken along the line A--A adjacent surfaces of the sleeves with circular rods ‘being positioned in each pair of grooves. > a .j r ' ‘ The resulting guide arrangement is very simple and of FIGURE '1; economical to manufacture and provides a very precise FIGURE?) is a transverse sectional view of the objec~ tive illustrated in FIGURE 1, showing the cross-sec In some objectives, however, movable components are tional shapes of the guide elements. provided therein, which components may be, for example, 30 A speci?c embodiment and several modi?cations of this a spring diaphragm. Structure must then be provided for invention will next "be described with reference to the ac guide structure for the axial movements of the sleeves. ' guiding this component, preferably by actuation of an ad- ~ oompanying drawings wherein like reference symbols indi justing member mounted on the camera casing. It is there fore necessary to devise an arrangement for transmitting the movement of the adjusting member to the movable cate the same parts throughout the various views. component. ' : ~ < Returning to FIGURE 1, there is shown an objective 1 havng a stationary mount 2 with bayonet connections 3 extending‘therefrom to be lockingly received in similarly ’ The present invention discloses a structure whereby the shaped grooves located in the camera casing 4. The ob guide elements between thecylindrical sleeves of an ob jective mount 2 has an axial bore 5 within which is re jective can be used for additional purposes including the ceived a bolt 6 which is biassed outwardly by a spring transmission of movement between an adjusting member 40 7. When the objective is assembled on the camera casing on the camera casing and a movable component in the'ob the bolt 6 registers with a pin 8 which is operatively con nected with the release mechanism of the camera but not It is therefore the principal object of this invention to shown in the drawings. When the release mechanism is provide a novel and improved objective mount for a actuated the bolt 8 moves axially towards the objective to depress the bolt 6 against the action of the spring 7. It is another object of this invention to provide a photo The other end of the bolt ‘6 has a tapered point 6a graphic objective having structure therein to transmit en which meshes with a lever arm 9 which, in turn, extends ergy from one end of the objective to the other but where radial-1y outwardly from a square bolt 9a. The square in the overall diameter of the objective is not enlarged. bolt 91: is received within a square axial bore in a round ' In the present invention the rod-like guide elements guide element 10 which is received between registering interposed between the cylindrical sleeves are mounted axial grooves 11 and 12 in the telescoping sleeves 14 and jective. camera. I > » ' ' ' - so as to be axially displaceable such as a push-rod in order to transmit mechanical movement from the camera casing to a movable component mounted on the objec 15, repectively. ’ . - As can be seen in FIGURE 3 the registering grooves 11 and 12 form a substantially square spacing within which the guide element 10 is rotatable. . The present invention also provides for utilizing two Rotation of the guide element 10 will also rotate the or more of the‘ guide elements for transmitting energy square bolt 9a which is received therein. from the camera casing of a movable component located The sleeve 14 has an outer ?ange 16 which is ?xedly in the objective. One of the guide elements may have a connected tov the stationary objective mount 2. There is circular cross-section so as to be both rotatably and 60 a ?ange 17 which connects the ?ange 16 with the sleeve axially movable within its pair of grooves. Accordingly, 14 and there is an opening 18 through the ?ange 17 several functions can be performed by a single guide ele through which the square bolt 9a passes. ment. Axial movement of the element can control one Two additional rod-like guidingelements 19 and 20 ‘function and rotative movement of the element can are positioned between the sleeves 14 and 15 in the same 65 control another function. ' manner as the guide element 10. The guide elements .10, One of the guiding elements is provided with an axial 19 and 20 are positioned approximately 120° apart. These tive. ' ~ ' ‘ bore through which passes a bolt which has means on both ends thereof for drivingly connecting with'an adjust guide elements axially guide the tube or sleeve 15 within ' which are mounted a plurality of lenses by means of a ing member on the camera casing and a movable com cylindrical mount 22. ' . ponent on the objective. The bore is of a non-circular 70 .The focussing of the objective is accomplished by axial shape and the bolt has a non-circular- cross-section which displacement of the sleeve 15. The sleeve 15 is provided corresponds to the cross-section of the bore. The bolt has ' with external threads 23 which mesh with internal threads 3,046,862 4 ‘24 of an adjusting sleeve 26 developed as a knurled an nular ‘band 25. The knurled band 25 together with the adjusting sleeve 26 are secured against axial displacement bv a ?ange 27 which is integral with the adjusting sleeve 26 and which engages a notch 13‘ in the outer ?ange 16. p The guiding elements 19 and 29 are also axially dis placeable within their pairs of grooves but are limited in This it can be seen that the present invention dis~ closes a photographic objective wherein elements for guid ing the axial movement of telescoping sleeves in an ob jective are ‘also used to transmit either mechanical or‘ electrical energy from one portion of the objective to another portion thereof. It will be understood that this invention is susceptible to modi?cation in ‘order to adaptmit to different usages and conditions and, accordingly, it ‘is desired to- compre The axial movement of the guide element 10 is limited 10 hend such modi?cations within this invention as may fall their axial movement by a shoulder 29 formed as an ex ternal flange on the sleeve 14. in one direction also by the ?ange 29 and in the other direction by the ?ange 17 of bolt 9a or the lever 9 and the pin 6. A second square bolt 30a is pivotally mounted journaled within the scope of the appended claims. What I claim is: 1. In a photographic objective having a moveable coin ponent, the combination of a pair of telescoping cylindri at 31 ‘and has a locking lever 32 on the outer end thereof. 15 cal sleeves, there being a plurality of pairs of cooperating axial grooves in the adjacent surfaces of said sleeves, a The bolt 30a is received within a square axial bore 30 corresponding plurality of rod-like guiding elements posi~ which passes through the guide element 10. The bolts tioned in said pairs of grooves so that said sleeves are 9a and 30:; are loosely connected into the square opening axially moveable withrespect to each other but rotary 30 so as to prevent the square bolts from determining . the position of the circular guide element 10 with respect 20 movement therebetween is prevented, and means on one of said guiding elements for drivingly interconnecting a to the faces of the grooves 11 and 12. moveable objective component with an adjusting means on The locking lever 32 is biased into the locking position by a spring 33, as shown in FIGURE 2, and has a lock the camera so as to transmit the adjusting movements to ing nose 34 which engages a member 35:; mounted on the moveable objective component. 2. In a camera, the combination of an objective having a spring diaphragm mechanism 35 in a known manner.‘ 25 a moveable component thereon, means on said camera for In the operation of the above-described structure the diaphragm is closed to its predetermined opening when adjusting said moveable component, said objective com prising a pair of telescoping cylindrical sleeves, there the release mechanism of the camera is actuated. Upon being a plurality of pairs of cooperating axial grooves in actuation of the release mechanism the pin 8 will be moved to the left as viewed in FIGURE 1, and this move 30 the adjacent surfaces of said sleeves, a plurality of guiding elements positioned in said pairs of grooves so that said’ ment is transmitted to the pin 6. The tapered point 6a sleeves are axially moveable with respect to each other will cam against the lever 9 to cause a pivoting of this but rotary movement therebetween is prevented, and lever about the axis of the circular guide element 101. means on one of said guiding elements for drivingly inter As a result, the locking lever 32, which is also coupled connecting said moveable objective component with said with the guide element 10, also performs a pivoting move adjusting means so that the adjusting movement is trans ment. The pivoting movement of the locking lever 32 mitted to the moveable objective component. will put the locking nose 34 out of the path of movement 3. An objective comprising a moveable component, a of the member 35a. This will permit the springs actuat pair of telescoping cylindrical sleeves, there being a plural ing the diaphragm to rotate the diaphragm blade ring in a direction to close the diaphragm opening to the previously 40 ity of pairs of cooperating axial grooves in the adjacent surfaces of said sleeves, a‘corresponding plurality of rod selected size. The operation of ‘such a spring diaphragm like guiding elements positioned, in said pairs of ‘grooves is conventional and need not be described in detail. The driving connection between the arm 9 and the lock ing lever 32 is also maintained during the focussing of the objective. Thus, during the axial displacement of the so that said sleeves are axially moveable with respect to each other but rotary movement therebetween is pre vented, and means on one of said guiding elements for drivingly interconnecting said moveable objective com cylindrical lens mount 22 the connection between the arm 9 and the locking lever 32 is maintained since the length of the square bolt 30a is adjusted to the extension transmit the adjusting movement of the member to the of the cylindrical sleeves. moveable objective component. ponent with an adjusting member on a camera so as to The guide elements 10, 19 and 20 function as axial 4. An objective comprising a moveable component, a guides for the telescoping sleeves during the focussing pair of telescoping cylindrical sleeves, there being a plural ity of pairs of cooperating axial grooves in the adjacent ‘of the objective. The diameter of the guide elements is so chosen that they all engage the faces of the registering pairs of grooves, such as 10‘ and 11. The rotation of the guide arm 10 for the axial displacement thereof occurring during the adjustment of the diaphragm will not aifect in any way the functioning of the guide arm 10‘ as an axial guide between the telescoping sleeves. surfaces of said sleeves, a corresponding plurality of rod like guiding elements positioned in said pairs of grooves so that said sleeves are axially moveable with respect to each other but rotary movement therebetween is pre vented, one of said guiding elements being axially move one guide element used to transmit mechanical move able in a pair of grooves and interconnecting said move able component and an adjusting member of the camera so that ‘axial movement of said one guiding element actu ment through the objective, it is pointed out that the guide ates said moveable component. While the'above-described embodiment has shown only elements 19‘ and 20 can be used to‘ also transmit adjusting movements either in an axial or rotative direction. The guide elements may be merely provided with an axial borer and electrical wires may be passed therethrough to interconnect electrical components which are mounted adjacent both ends of the axial guides. Thus, a hollow guide element may serve as an electrical conduit. While the described embodiment related to the use of ' 5. An objective comprising a moveable component, a pair of telescoping cylindrical sleeves, there being a plural ‘ity of pairs of cooperating axial grooves in the ‘adjacent surfaces of said sleeves, a corresponding plurality of rod like guiding elements positioned in said pairs of grooves so that said sleeves are axially moveable with respect to each other but rotary movement therebetween is pre vented, and means on one of said guiding elements for the ‘guide element with the release mechanism of the camera it is pointed out that any other adjusting mem drivingly interconnecting said moveable objective com her on the camera may be used to guide pin 8 so as to transmit the adjusting movement of the member to the moveable objective component, one of said guiding ele transmit the adjusting movement of the member by means of the guide element to a moveable component mounted in the objective. ponent with an adjusting member on a camera so as to, ments having a circular cross-section so as to be rotatable 75 about its own axis within its pair of grooves, and means as.Q. aces-e62 on said rotatable guiding element for driving-1y intercon necting said moveable objective component with an ad is prevented, one of said guiding elements having a round justing member on the camera so as to transmit the ad cross-section so as to be rotatable within its pair of grooves and having an axial bore therethrough of poly justing movement to the moveable objective component. gonal cross-section, a bolt slidably mounted within said 6. An objective comprising a moveable component, a 5 axial bore and having a cross-section corresponding there pair of telescoping cylindrical sleeves, there being a plural to, and means on one end of said bolt for operatively ity of pairs of cooperating axial grooves in the adjacent connecting with an adjusting member on the camera and surfaces of said sleeves, a corresponding plurality of rod means on the other end of said bolt for operatively con like guiding elements positioned in said pairs of grooves necting with said moveable objective component.v so that said sleeves are axially moveable with respect to 10 ’ 8; An objective comprising a moveable objective com each other but rotary movement therebetween is pre ponent, a pair of telescoping cylindrical sleeves, there vented, cne of said guiding elements being both axially I moveable and rotatable in its pair of grooves, ‘and means being a plurality of pairs of cooperating axial grooves in the adjacent surfaces of saidsleeves, a corresponding plu on said one guiding element for drivingly interconnecting rality of rod-like guiding elements positioned in said pairs said moveable objective component with an adjusting 15 of grooves so that said sleeves are axially moveable with member 011 the camera so that movement of the adjust ing member is transmitted to the moveable objective component. . . respect to each other but rotary movement therebetween is prevented, there being an axial bore in one of said guide elements, there being electrical circuit components on 7. An objective comprising a moveable objective com both sides of said guiding elements and an electrical lead ponent, a pair of telescoping cylindrical sleeves, there being 20 passing through said axial bore in said ‘one guiding ele ment and connecting said electrical components. a plurality of pairs of cooperating axial groovesrin the adjacent surfaces of said sleeves, a corresponding plurality of ‘rod-like guiding elements positioned in said pairs of References Cited in the ?le of this patent grooves so that said sleeves are axially moveable with UNITED STATES PATENTS respect to each other but rotary movement therebetween 25 2,969,008 \ Ferrari ______________ __ Ian. 24, 1961'