DE1928450C - Device for focusing the ob jective of an optical device - Google Patents

Description

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The invention relates to a device parts brings the invention when, as provided according to an expedient development for focusing the lens of an optical Ge, the advice, in particular a camera, stood on a counter-locking device by adjusting the lens with a according to the triangulation principle ar- optionally in its fixed and its release position, a range finder that can be moved at the am- 5 for the pendulum body, sight the base of the object freely in a position. In this case the locking device for the position corresponding to the distance of the object Pendulum body does not have, as in the case of the known swinging pendulum body mentioned, which is actuated in the arrangement by a separate handle, its respective position by means of a locking device but by moving the lens itself Components and a Be Actuating lens adjustment movable feeler is used, movement handle. In the illustrated embodiment, the lens is also operated without using the example, the Feststelleinnch triangulation principle can be focused by hand. by turning the lens with a pen.

In a device of the above type (USA patent - Further features and advantages of the invention written 1258 459) the manual setting is carried out in the following 15 result from the following description of a gender way: First of all, the locking device must be based on the drawing. then be solved for the pendulum body. Then it has to show

Pendulum body on the basis of the scale on the estimated Fig. 1 is a detail from a side view Distance can be adjusted. Then the pen is a camera with a fore-nodular body according to the invention with the help of the locking device in the ao tion,

to fix the set position. Only then does FIG. 2 is an enlarged view of the arrangement

Hand shifted the lens until the tactile sensor as shown in FIG. 1 with the cover plate removed,
member strikes the pendulum body. This pure FIG. 3 is an enlarged detail view of

Manual adjustment is extremely cumbersome. Parts of the device according to FIG. 1,
This is due to the fact that the manual setting under as F i g. 4 is a view similar to FIG. 2, in an on-hand actuation of the otherwise semi-automatic its operating position,

Setting required components (pendulum body, Fig. 5 is a detail from a sectional view

Locking device, feeler element) is made. along the line 5-5 in FIG. 1 and
The cumbersome setting process takes a lot of time. 6 shows a detail from a sectional view

This is particularly unfavorable because the hand 30 along the line 6-6 from FIG. 1.
This setting is usually selected for snapshots. Parts of a camera can be seen in the drawing

is, in which there is a quick setting and loading 10 with a housing 12, which in the usual way lateral the camera arrives. In this case, the ten walls 14 and a front wall 16 can have on known device additional delays in which an objective lens assembly 18 is located, arise in that the objective with its tactile 35 The objective 18 comprises a lens 20, which a member may only be completely defined from the oscillating optical axis 24. Preferably this is upper range of the pendulum body must be moved out, jective 18 on a (not shown) screw before the pendulum body is arranged rotatably on certain distance threads of the lens mount 22, in values can be set. which the thread with an assigned (identical

In contrast to this, the invention has the task of 40 screw threads of the base (if not shown), a device of the housing 12 described above interacts. A handle 26 is on the To design the genus so that a simple lens mount 22 is attached with it, with the latter being and distance adjustment to be performed quickly can be rotated or adjusted, whereby a without using the triangulation principle rnög longitudinal movement of the objective lens 20 along the optical is. 45 tables axis 24 is generated. Purpose of this longitudinal

According to the invention, this object is achieved by adjusting the focal plane of the objective 18 solves that the pendulum body for the purpose of sharpness with a film plane in the camera 10 in superimposition to bring mood without applying the triangulation principle.

Fixed in a position by means of a selection device. Inside the housing 10 there is a ring that can be set in which it is attached to the lens mount 22 outside of the sharpener 28. The required range of motion of the It has a rearward-facing reference surface Feeler member lies. 28a, which in the illustrated embodiment

In the device according to the invention, the example can be designed as a flat surface, but Pendulum body can also be a cam surface by means of the selection device. From the ring 28 Be brought to the position in which it is inoperative 55 a pin 30 protrudes radially. Will the lens 18 mind and the displacement of the lens does not rotate in any way and thereby moves the lens 20 axially, so ver-wise with special needs. In this position the object can rotate and move with it can be set directly relative to a scale, pin 30.

without moving the pendulum body. A focusing device 32 works with the

would have to. So if you put the camera together for snap 60 lens 18 and allow half car shots wants to get ready, you need matic adjustment or adjustment of the lens 20. only to operate the selection device and that the device 32 has a pendulum body 36, put out of function by the pendulum body. which is freely pivotable about an axis of rotation, Then the lens can be welcomed with a single hand - which in turn is welcomed by one in the camera housing 12 be focused. This is essentially a fixed holding plate 40 is held. Can the Penfacher and faster than when the entire pendulum body 36 first oscillates freely, it is always looking for one body-Mcchanisiiuis set and then the ob- gravity-related position on, regardless of the iki needs to be moved. Very special pre-respective, more or less inclined alignment

. ". „„ Table axis 24. For this reason the ffan e 44 of the pendulum body 36 is provided with an SS, the shape of which corresponds to the inclination of the body optical axis 24 between a horizontal line in the n and the hypofenuse S corresponds to a right triangle. Des-Tn The vertical runs from the position of camera 0. Look down to a point where ! i essential horizontal line of an object cut from user

transmission link or spacer SO both with the cam edge 44 of the pendulum through "sin window ff * gj * m pull mark 70 carries, wefcber"

«On the yn« «? F« f «» 8 «JKi A selector M allows you to choose between the above-described focus position ^" ^ Jj by hand. The selector is operated by hand on the axis of rotation 38 toawak axis 86 ^

connected. He interspersed * Jfi £ ^ £ jff arched ^

is the spacer 50 on a support 54 washer to the

50 at the cam edge 44 of the pendulum AUTO "

Ä. d. PendeM ^ ers 36 arbeU «der ÄbJLl mi. the carrier 54 via an inclined surface,. deader N * Z4

To move house 50, the lens barrel 22 of d twisted in one direction (in the drawing

sasstfcrii rr sstä

However, processing shall always be ^ J inclination angle

Äe ^ gSn ^^ KaÄ ^ fold JS. pressed In the lowest position, which the pin 30 reaches in the pocket or notch 62, f de. Spacer 50 opposite the edge 44 of the ^ _{Pendelkör P} ers36 free, gle.ch, which position the pendulum body 36 assumes. .

As soon as the pendulum body is 36 m a "^ e layer masonry *>

gn ^uberste "' _r , _iaken ⁵ ° Jgf ³ J! ° _{is found}
Fig. ^ "" J

^ emg ^ ^ _{that d} _ _e

or position indicator 88 ge _{def standard pin of the A}

the recess 94 adjusting pin 90 in this position by an additional

Beads. It should be noted that the lens mount is inclined downward at the _{before OPJJ * angle}

On the contrary, the rotation of the lens barrel can be caused by a ₉₂

ScharfcinstelluriB

Adjusting pin «» »the left one. Edge de

Rotational movement set when the camera 10 is inclined, even when the spacer holder 50 is lifted from the pendulum body 36. In this blocking position for the pendulum body 36, the objective lens arrangement 18 or the lens 20 can in general entire focus area can be adjusted by hand without a frictional connection between ring piece 28, Spacer 50 and / or Pendeäkörper 36 occurs. If all these parts are therefore free to be set in any desired positions, the to The objective 18 or the lens 20 is rotated and any of the scale lines 68 on the lens mount 22 be brought into agreement with the reference mark 70 in the window 66. The lens 18 can therefore conveniently by hand to focus on an object distance, either by measurement or was determined by estimation.

Claims (8)

Patent claims: 1. Device for focusing the lens ao of an optical device, in particular a camera, on an object with one based on the triangulation principle working rangefinder, which allows you to aim at the base of the object freely in one of the distance of the Item corresponding position has swinging pendulum body, which in its respective Location can be fixed by means of a locking device and as a stop for one at the Objective adjustment movable probe element is used, the objective also without application of the triangulation principle can be focused by hand, characterized in that the pendulum body (36) for the purpose of focusing without using the triangulation principle can be fixed in a position by means of a selection device (80) in which it is outside the the range of movement of the feeler element (SO) required for focusing. 2. Apparatus according to claim 1, characterized in that the locking device (50, 58 to 60) can be moved into its locking position and its release position for the Pcndclkkörpers (36) by adjusting the lens (18). 3. Device according to at least one of claims 1 and 2 "characterized in that the Voting device; (80) a manual control element (82) and an actuator that can be moved with the latter (90) which in the one selection position (88) with a receptacle (92) in the pendulum body (36) cooperates . 4. Apparatus according to claim 3, characterized in that the actuator (90) than in the Receiving (92) of the pendulum body (36) is formed movably protruding pin. 5. The device according to at least one of claims 1 to 4, characterized by a reference surface (28 ei) on the lens (18), one of the TastgMed (50) forming, with the reference surface and spacers cooperating with the pendulum body (36) to define the reference surface Depending on the orientation of the pendulum body, a movable support (54) for the Spacer holder, which carrier has a foot (60) with an inclined to its direction of movement Has surface (59), and an adjustable by means of the lens and with the inclined surface cooperating actuating element (30), when it rests on the carrier, this the spacer from Pendulum body lifts off. 6. Apparatus according to claim 5, characterized in that that the carrier (54) is pivotable about a fixed pivot (56). 7. Apparatus according to claim 5 and / or 6, characterized in that the carrier (54) for Movement of the spacer (50) in contact position is biased on the pendulum body (36) by means of a spring. 8. The device at least according to claim 5, characterized in that the spacer (50) is attached to the unidirectional biased beam (54) for movement with it, that the adjusting element (30) adjustable by the lens (18) is designed as a pin and that at The pin rests on the inclined surface (59) of the carrier (54) against its pretensioning direction movable and the spacer can be lifted off the pendulum body (53). Hicrzn 1 sheet of drawings