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Interchangeable lens

a technology of interchangeable lenses and interchangeable lenses, applied in the direction of printers, instruments, camera focusing arrangement, etc., can solve the problem that conventional techniques are not designed to address what control

Inactive Publication Date: 2012-11-29
NIKON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach enables normal communication operations even when control and generation processing occur simultaneously, ensuring prompt and reliable transmission of lens data to the camera body, thereby maintaining system stability and efficiency.

Problems solved by technology

Conventional techniques are not designed to address as to what control may handle a situation in which processing to control each of the two transmission paths occurs simultaneously.

Method used

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  • Interchangeable lens
  • Interchangeable lens
  • Interchangeable lens

Examples

Experimental program
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first embodiment

[0026]FIG. 1 is an external view of a camera system according to the first embodiment of the present invention. A camera system 1 is constituted with a camera body 100 and an interchangeable lens 200. The interchangeable lens 200 is to be removably attached to the camera body 100. The interchangeable lens 200 is attached by fitting a lens-side lens mount 201 of the interchangeable lens into a body-side lens mount 101 of the camera body 100.

[0027]The body-side lens mount 101 is provided with a plurality of contacts 102 for data communication and power supply. The lens-side lens mount 201 is provided with a plurality of contacts 202 corresponding to the plurality of contacts 102. When the interchangeable lens 200 is attached to the camera body 100, the contacts 102 and the contacts 202 are connected. As a result, electric power for actuating the interchangeable lens 200 is supplied from the camera body 100 to the interchangeable lens 200 and, as described later, data communication is ...

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PUM

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Abstract

An interchangeable lens to be removably attached to a camera body, includes: a receiving device that receives predetermined control data from the camera body through a first transmission path; a control device that executes predetermined control processing based upon the control data upon reception of the control data by the receiving device; a generation device that executes at predetermined intervals generation processing for generating predetermined lens data which indicates an operating state of the interchangeable lens; a transmission device that transmits the lens data to the camera body through a second transmission path, which is different from the first transmission path, upon generation of the lens data by the generation device; and a prioritizing device that gives priority to the generation processing by the generation device over the control processing by the control device.

Description

[0001]This is a Continuation of application Ser. No. 13 / 029,764 filed Feb. 17, 2011, which claims the benefit of Japanese Application No. 2010-062735 filed Mar. 18, 2010 and Japanese Application No. 2011-004126 filed Jan. 12, 2011. The disclosures of the prior applications are hereby incorporated by reference herein in their entirety.INCORPORATION BY REFERENCE[0002]The disclosures of the following priority applications are herein incorporated by reference:[0003]Japanese Patent Application No. 2010-062735 filed Mar. 18, 2010[0004]Japanese Patent Application No. 2011-004126 filed Jan. 12, 2011BACKGROUND OF THE INVENTION[0005]1. Field of the Invention[0006]The present invention relates to an interchangeable lens to be removably attached to a camera body.[0007]2. Description of Related Art[0008]There is a known technique that, in a camera system constituted with a camera body and an interchangeable lens, the camera body drives a focusing lens in the interchangeable lens so as to perform...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G03B13/34
CPCH04N5/23209G03B17/14H04N23/663
Inventor IMAFUJI, KAZUHARU
Owner NIKON CORP