# US 9,436,066 B1 · Leaf shutter system for interchangeable lens cameras

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- Number: US 9,436,066 B1
- Document ID: US9436066B1
- Status: Granted
- Kind: B1
- Application number: 14/817,098
- Filed: 2015-08-03
- Granted: 2016-09-06
- Earliest claimed: 2015-08-03
- Assignees: Sony Corporation; Sony Pictures Entertainment Inc.
- Applicants: Sony Corporation; Sony Pictures Entertainment Inc.
- Inventors: Kazunori Tanaka
- Web page: https://patentgrep.com/patent/US9436066B1

## CPC

- G03B 17/14: interchangeably
- G03B 9/08: Shutters
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

A camera system, including: an interchangeable lens; an internal shutter configured to open and close; and a lens detector coupled to the internal shutter and capable of accepting the interchangeable lens, the lens detector configured to detect the presence of a leaf shutter within the interchangeable lens, wherein the lens detector generates a shutter signal to keep the internal shutter open when the presence of the leaf shutter within the interchangeable lens is detected. Key words include interchangeable lens and leaf shutter.

## Claims

### Claim 1

A camera body, comprising:
an internal shutter configured to open and close; and
a lens detector coupled to the internal shutter and capable of accepting an interchangeable lens, the lens detector configured to detect the presence of a leaf shutter within the interchangeable lens,
wherein the lens detector generates a shutter signal to keep the internal shutter open when the presence of the leaf shutter within the interchangeable lens is detected.

### Claim 2 (depends on 1)

The camera body of claim 1, further comprising
a controller coupled to the internal shutter and the lens detector, the controller configured to receive the shutter signal and command the internal shutter to stay open.

### Claim 3 (depends on 1)

The camera body of claim 1, wherein the lens detector detects the presence of the leaf shutter within the interchangeable lens by detecting a configuration of a tab on the interchangeable lens.

### Claim 4 (depends on 3)

The camera body of claim 3, wherein the lens detector includes a mechanical means to detect the configuration of the tab.

### Claim 5 (depends on 3)

The camera body of claim 3, wherein the lens detector includes an electrical means to detect the configuration of the tab.

### Claim 6 (depends on 3)

The camera body of claim 3, wherein the lens detector detects the configuration of the tab by detecting a position of the tab on the interchangeable lens.

### Claim 7 (depends on 6)

The camera body of claim 6, wherein the position of the tab is different for the interchangeable lens with the leaf shutter than the interchangeable lens without the leaf shutter.

### Claim 8 (depends on 3)

The camera body of claim 3, wherein the lens detector detects the configuration of the tab by detecting the presence of the tab on the interchangeable lens.

### Claim 9

A camera system, comprising:
a camera body;
an interchangeable lens configured to be attachable to the camera body,
wherein the camera body comprises:
an internal shutter configured to open and close;
a lens detector coupled to the internal shutter and capable of accepting the interchangeable lens, the lens detector configured to detect the presence of a leaf shutter within the interchangeable lens,
wherein the lens detector generates a shutter signal to keep the internal shutter open when the presence of the leaf shutter within the interchangeable lens is detected.

### Claim 10 (depends on 9)

The camera system of claim 9, wherein the lens detector detects the presence of the leaf shutter within the interchangeable lens by detecting a configuration of a tab on the interchangeable lens.

### Claim 11 (depends on 10)

The camera system of claim 10, wherein the tab is a physical protrusion on the interchangeable lens.

### Claim 12 (depends on 10)

The camera system of claim 10, wherein the tab is a marking on the interchangeable lens.

### Claim 13 (depends on 12)

The camera system of claim 12, wherein the marking on the interchangeable lens is optically detected by the lens detector.

### Claim 14 (depends on 10)

The camera system of claim 10, wherein the tab is an electrical wiring.

### Claim 15 (depends on 14)

The camera system of claim 14, wherein the electrical wiring is electrically detected by the lens detector.

### Claim 16

A camera, comprising:
an interchangeable lens having a leaf shutter indicator that indicates the interchangeable lens includes a leaf shutter;
a camera body comprising:
an internal shutter configured to open and close; and
a lens detector coupled to the internal shutter, the lens detector configured to detect the leaf shutter indicator,
wherein the leaf shutter indicator does not protrude into the camera body.

### Claim 17 (depends on 16)

The camera of claim 16, wherein the lens detector is configured to generate a shutter signal to keep the internal shutter open when the presence of the leaf shutter indicator is detected.

### Claim 18 (depends on 16)

The camera of claim 16, wherein the leaf shutter indicator is a hole in the interchangeable lens.

### Claim 19 (depends on 16)

The camera of claim 16, wherein the leaf shutter indicator is a marking on the interchangeable lens.

### Claim 20 (depends on 16)

The camera of claim 16, wherein the leaf shutter indicator is an electrical wiring.