Focus detection system
First Claim
1. A focus detection system comprising:
- at least one line sensor array having a plurality of areas, each of which includes a plurality of pixels, wherein said line sensor array photoelectrically converts object light received by each of said plurality of pixels into electric charge to accumulate said electric charge, and outputs said accumulated electric charge as an image signal;
a plurality of monitor sensor arrays, positioned so as to be adjacent to said plurality of areas of said line sensor array, for monitoring amounts of light received by said plurality of areas of said line sensor array to output monitor signals representing said amounts of light, respectively;
a controller which terminates an integral operation of said line sensor array immediately after said monitor signals reach an integration termination value; and
a saturation detecting device for detecting whether said image signal reaches a predetermined level of saturation, wherein, in the case where said saturation detecting device detects that said image signal reaches said predetermined level of saturation, said controller changes said integration termination value so that said monitor signals reach said integration termination value in less time, and makes said line sensor array perform said integral operation again.
3 Assignments
0 Petitions
Accused Products
Abstract
A focus detection system includes a line sensor array having areas including pixels, wherein the line sensor array photoelectrically converts object light received by each pixel into electric charges, and outputs accumulated electric charges as an image signal; monitor sensor arrays, adjacent to the areas of the line sensor array, for monitoring amounts of light received thereby to output monitor signals, respectively; a controller which terminates an integral operation of the line sensor array immediately after the monitor signals reach an integration termination value; and a saturation detecting device for detecting whether the image signal reaches a predetermined level of saturation. If the saturation detecting device detects that the image signal reaches the predetermined level of saturation, the controller changes the integration termination value so that the monitor signals reach the integration termination value quicker, and makes the line sensor array perform the integral operation again.
-
Citations
8 Claims
-
1. A focus detection system comprising:
-
at least one line sensor array having a plurality of areas, each of which includes a plurality of pixels, wherein said line sensor array photoelectrically converts object light received by each of said plurality of pixels into electric charge to accumulate said electric charge, and outputs said accumulated electric charge as an image signal;
a plurality of monitor sensor arrays, positioned so as to be adjacent to said plurality of areas of said line sensor array, for monitoring amounts of light received by said plurality of areas of said line sensor array to output monitor signals representing said amounts of light, respectively;
a controller which terminates an integral operation of said line sensor array immediately after said monitor signals reach an integration termination value; and
a saturation detecting device for detecting whether said image signal reaches a predetermined level of saturation, wherein, in the case where said saturation detecting device detects that said image signal reaches said predetermined level of saturation, said controller changes said integration termination value so that said monitor signals reach said integration termination value in less time, and makes said line sensor array perform said integral operation again. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification