CONTACT SLEEVE, CAMERA OBJECTIVE WITH CONTACT SLEEVE, USE OF A CONTACT SLEEVE

Abstract

A contact sleeve for a camera objective. The contact sleeve includes a sleeve-shaped base body made of an electrically non-conductive material, as well as at least one electrical conductor embedded in the material of the base body, preferably a contact pin, which has, at at least one end, an exposed contacting portion for electrically contacting an electrical consumer integrated in the camera objective. A camera objective having a contact sleeve and the use of the contact sleeve for contacting an electrical consumer of a camera objective, are also described.

Claims

1. A contact sleeve for a camera objective, comprising: a sleeve-shaped base body made of an electrically non-conductive material; at least one electrical conductor embedded in the material of the base body, which has, at at least one end, an exposed contacting portion configured to electrically contact an electrical consumer integrated in the camera objective.

2. The contact sleeve as recited in claim 1, wherein the electrical conductor is a contact pin.

3. The contact sleeve as recited in claim 1, wherein at least two electrical conductors are provided, which furthermore extend in parallel to one another and/or are diametrically opposite to one another on the base body.

4. The contact sleeve as recited in claim 3, wherein the electrical conductors are contact pins.

5. The contact sleeve as recited in claim 1, wherein a first exposed contacting portion is formed by an end portion of the electrical conductor protruding beyond the contact sleeve.

6. The contact sleeve as recited in claim 1, wherein a second exposed contacting portion is formed by an exposed circumferential region of the electrical conductor and is arranged in a region of a material recess of the base body.

7. The contact sleeve as recited in claim 1, wherein the base body is a hollow cylinder with an annular collar, wherein the annular collar extending radially outward.

8. The contact sleeve as recited in claim 1, wherein the base body has, in a region of an end face and/or of an inner circumferential surface, at least one latching geometry, which can be brought into engagement with a geometry and/or recess of the camera objective to secure a position of the contact sleeve on the camera objective.

9. A camera objective, comprising: a contact sleeve including: a sleeve-shaped base body made of an electrically non-conductive material, and at least one electrical conductor embedded in the material of the base body, which has, at at least one end, an exposed contacting portion electrically contacting an electrical consumer integrated in the camera objective; wherein the contact sleeve is arranged on a shaft of the camera objective.

10. The camera objective as recited in claim 9, wherein, to secure a position of the contact sleeve on the shaft, at least one geometry formed in a region of an end face and/or of an inner circumferential surface of the base body, the geometry being a latching geometry, in engagement with a geometry and/or recess of the camera objective.

11. The camera objective as recited in claim 9, wherein the contact sleeve is supported in an axial direction, via an annular collar of the base body, on a radially extending shoulder of the shaft.

12. A method comprising: providing a camera objective, including: a contact sleeve including: a sleeve-shaped base body made of an electrically non-conductive material, and at least one electrical conductor embedded in the material of the base body, which has, at at least one end, an exposed contacting portion electrically contacting an electrical consumer integrated in the camera objective; wherein the contact sleeve is arranged on a shaft of the camera objective; and using the camera objective.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG. 1 shows a sectional view through a contact sleeve according to the invention in accordance with a first preferred example embodiment of the present invention.

[0029] FIG. 2 shows a perspective view of the contact sleeve of FIG. 1.

[0030] FIG. 3 shows a longitudinal section through a contact sleeve according to the present invention in accordance with a further preferred example embodiment.

[0031] FIG. 4 shows a side view of the contact sleeve of FIG. 3.

[0032] FIG. 5 shows a longitudinal section through a camera objective according to the present invention with a contact sleeve analogous to FIGS. 3 and 4.

[0033] FIG. 6 shows a sectional view through the camera objective of FIG. 5.

[0034] FIG. 7 shows a perspective view of the camera objective of FIGS. 5 and 6.

[0035] FIG. 8 shows an enlarged detail of the longitudinal section of FIG. 5.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0036] FIG. 1 shows a contact sleeve 1 according to the present invention for a camera objective 10 for contacting an electrical consumer 6 integrated in the camera objective 10 (analogously to FIG. 6). The contact sleeve 1 shown in FIG. 1 comprises a base body 2 made of an electrically non-conductive material, in particular plastic, in which two electrical conductors 3 are each embedded in the form of a contact pin. The two contact pins extend substantially in parallel to one another as well as in parallel to a longitudinal axis of the contact sleeve 1, wherein at one end, the contact pins project beyond an annular collar 2.2 of the base body 2 so that first contacting portions 4 are formed. At the other end, in the region of material recesses 7 of a hollow cylinder 2.1 of the base body 2, contacting portions 5 are exposed (see also FIG. 2).

[0037] The contact pins are diametrically opposite one another on the base body 2 of the contact sleeve 1, wherein a first contact pin forms a positive pole and a second contact pin forms a negative pole. A geometry 8 in the form of a circumferential bead formed in the region of an inner circumferential surface 2.4 of the hollow cylinder 2.1 can be brought into engagement with a recess 11 of the camera objective 10 in order to secure the position of the contact sleeve 1 in the axial direction (analogously to FIG. 8). In the region of an end face 2.3 of the base body 2, further geometries 9 are formed, which rise above the annular collar 2.2 and surround the contact pins. The geometries 9 can likewise be brought into engagement with the camera objective 10 so that an anti-rotation lock can be realized therethrough.

[0038] As shown by way of example in FIGS. 3 and 4, the geometries 9 can also be omitted. This is in particular the case if the contact pins form plug contacts that can be plugged into corresponding receptacles of the electrical consumer 6 so that a certain anti-rotation lock is already achieved therethrough.

[0039] FIGS. 5 to 7 show the contact sleeve 1 of FIGS. 3 and 4 plugged onto a shaft 12 of a camera objective 10, in which a heating device as an electrical consumer 6 is integrated. By means of the heating device, a lens 14 of the camera objective 10 can be heated to keep it free of precipitation and ice. For this purpose, the heating device is formed as a ring that directly abuts the lens 14.

[0040] For the power supply, the heating device is connected to an electronics (not shown) which is located on the side of the camera objective 10 facing away from the lens 14. That is to say, an axial distance between the heating device and the electronics must be bridged. The contact sleeve 1 assumes this task, including the electrical contacting. For this purpose, the contact sleeve 1 is pushed onto the shaft 12 of the camera objective 10 until the circumferential bead snaps into the recess 11 of the shaft 12 and the annular collar 2.2 of the base body 2 abuts against a radially extending shoulder 13 of the camera objective 10. In the process, the contacting portions 4 of the contact pins engage in recesses 15 of the heating device so that an anti-rotation lock is given therethrough. During the pushing-on process, attention must therefore be paid to the angular position of the contact sleeve 1 in relation to the camera objective 10.

[0041] The contact sleeve 1, attached to the shaft 12, and the camera objective 10 form a pre-assembled unit (see FIG. 7), which preferably only needs to be inserted into an objective holder (not shown) comprising suitable contact elements for contacting the contacting portions 5 of the contact pins of the contact sleeve 1. The fixing of the position of the contact sleeve 1 on the camera objective 10 facilitates insertion. In addition, the camera objective 10 may be aligned in the familiar manner in relation to an image sensor (not shown) connected to the objective holder.