Image sensing device
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsYasuhiro Yamamoto, Tahei Morisawa
Life of this patent
Estimating the term…
Abstract
An image sensing device provided in a camera using an electro-developing recording medium which electronically develops an image formed by a photographing optical system. During descending of the electro-developing recording medium, a light outputted from a light source passes through the electro-developing recording medium, so that an image recorded in the electro-developing recording medium is read by a line sensor. When an image is recorded on the electro-developing recording medium, the line sensor is directed to a sub-mirror provided to a quick return mirror. Thus, a light led from the photographing optical system is detected by the line sensor, so that an auto-focusing condition of the photographing optical system is sensed based on an output signal of the line sensor.
Claims18
An image sensing device provided in an electro-developing type camera, in which an image obtained by a photographing optical system is formed on an electro-developing recording medium, by which said image is electronically developed, said device comprising:
- an optical sensor;
- a sensing unit that senses a state of focus of said image formed by said photographing optical system, by utilizing said optical sensor;
- and
- a reading unit that reads said image developed by said electro-developing recording medium, by utilizing said optical sensor.
An electro-developing type camera that uses an electro-developing recording medium, said camera comprising:
- a photographing optical system through which an image is formed on the electro-developing recording medium;
- and
- an optical sensor operable in a first mode in which said optical sensor senses with light entering said camera through said photographing optical system to determine a state of focus of an image formed through said photographing optical system, said optical sensor being operable in a second mode in which said sensor senses light passing through the electro-developing recording medium to read the image developed by said electro-developing recording medium.
Dependencies are inferred from the claim text.