Image sensing apparatus having horizontal shielding masks

• US 5,206,717 A
• Filed: 11/07/1991
• Issued: 04/27/1993
• Est. Priority Date: 08/08/1988
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Mimura, Toshihiko, Sakata, Tsuguhide
• Primary Examiner(s): Coles, Sr., Edward L.
• Assistant Examiner(s): VU, KIM Y
• Application Number:
  US07/789,458
• Time in Patent Office: 537 Days
• Field of Search: 358/41, 358/43, 358/44, 358/55, 358/213.26, 358/213.28
• US Class Current: 348/264
• CPC Class Codes: H04N 25/41 Extracting pixel data from a plurality of image sensors simultaneously picking up an image, e.g. for increasing the field of view by combining the outputs of a plurality of sensors
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 9/80 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback

Abstract

An image sensing apparatus comprising a photographic optical system, a splitter optical system for splitting an optical image formed by the photographic optical system into a plurality of channels to form a plurality of optical images, at least first and second image sensors for photoelectrically converting the plurality of optical images formed by the splitter optical system into electrical signals, and a drive circuit for synchronously driving the first and second image sensors, being characterized in that the first and second image sensors are arranged on optically equivalent planes in offset relation by a distance equal to 1/2 of a picture element in the vertical direction and an imaging plane of each of both image sensors has horizontally extending shielding masks arranged thereon of about 1/2 picture element wide with a pitch of one picture element in the vertical direction.

Claims

1. An image sensing apparatus comprising a photographic optical system, splitting means for splitting an optical image formed by said photographic optical system into two channels to form two optical images, and first and second image sensing means for photoelectrically converting the two optical images formed by said splitting means into electrical signals, wherein said first image sensing means and said second image sensing means are arranged on optically equivalent planes in offset relation by a pitch equal to one-half of a picture element in the vertical direction and, wherein horizontally extending shielding masks having a width equal to about one-half of a picture element in the vertical direction with a pitch equal to one picture element in the vertical direction are arranged on an imaging plane of each of said first and second image sensing means.

2. An apparatus according to claim 1, wherein said splitting means includes a half-mirror.

3. An apparatus according to claim 1, wherein said first, second and third image sensing means include solid-state image sensors.

4. An apparatus according to claim 1, further comprising drive means for synchronously driving said first, second and third image sensing means.

5. An apparatus according to claim 1, further comprising means for rendering said splitting means inoperative.

6. An apparatus according to claim 1, further comprising color image sensing means positioned to receive an optical image formed by said photographic optical system and having a lower resolution than that of said first and second image sensing means.

7. An image sensing apparatus comprising a photographic optical system, splitting means for splitting an optical image formed by said photographic optical system into three channels to form three optical images, and first and second image sensing means for a luminance signal and third image sensing means for a chrominance signal for photoelectrically converting the three optical images formed by said splitting means into electrical signals, wherein said first image sensing means and said second image sensing means are arranged on optically equivalent planes in offset relation by a pitch equal to one-half of a picture element in the vertical direction, and wherein horizontally extending shielding masks having a width equal to about one-half of a picture element in the vertical direction with a pitch equal to one picture element in the vertical direction are arranged on an imaging plane of each of said first and second image sensing mans.

8. An apparatus according to claim 7, wherein said splitting means include a half-mirror.

9. An apparatus according to claim 7, wherein said first, second and third image sensing means include solid-state image sensors.

10. An apparatus according to claim 7, further comprising drive means for synchronously driving said first, second and third image sensing means.

11. An apparatus according to claim 7, wherein said splitting means includes two half-mirrors.

12. An apparatus according to claim 11, further comprising means for selectively rendering at least one of said two half-mirrors inoperative.

13. An apparatus according to claim 7, wherein said third image sensing means has a lower resolution than said first and second image sensing means have.