Camera and vehicle-surroundings visual-recognition apparatus using the same
First Claim
1. A camera comprising:
- a housing having a plurality of entrance windows through each of which extraneous light rays are taken in;
an image pickup device mounted in said housing;
an optical element for forming images obtained from said extraneous light rays taken in through said plurality of entrance windows on an imaging plane of said image pickup device;
a light shielding member that is provided in such a way as to be upright on said imaging plane of said image pickup device and to divide said imaging plane of said image pickup device into imaging fields on which images are respectively formed from said extraneous light rays taken in through the plurality of entrance windows;
an aperture limitation member which is placed in a stage preceding said light shielding member and has an aperture for limiting a size of an incidence optical path of each of extraneous light rays from which images are formed on the imaging plane of said image pickup device;
a diaphragm member that is disposed in the stage preceding said light shielding member in such a manner as to be able to move in a direction perpendicular to an optical axis, for regulating the quantities of incident light of said imaging fields by overlapping with said aperture in a direction of the optical axis; and
drive means for moving said diaphragm member in a direction perpendicular to the optical axis.
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Accused Products
Abstract
A camera provided with a housing having a plurality of entrance windows through each of which extraneous light rays are taken in, an image pickup device mounted in this housing, an optical element that is disposed in the housing and is operative to form images obtained from extraneous light rays taken in through the plurality of entrance windows on the imaging plane of the image pickup device, a light Shielding member that is provided in such a way as to be upright on the imaging plane of the image pickup device and to divide the imaging plane of the image pickup device into imaging fields on which images are respectively formed from the extraneous light rays taken in through the plurality of entrance windows, an aperture limitation remember that is placed in a stage preceding the light shielding member and has an aperture to limit the size of an incidence optical path of each of extraneous light rays from which images are formed on the imaging plane of the image pickup device, a diaphragm member that is disposed in the stage preceding the light shielding member in such a manner as to be able to move in a direction perpendicular to an optical axis and is operative to regulate the quantities of incident light of the imaging fields by overlapping with the aperture in the direction of the optical axis, and a drive unit for moving this diaphragm member in a direction perpendicular to the optical axis.
219 Citations
10 Claims
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1. A camera comprising:
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a housing having a plurality of entrance windows through each of which extraneous light rays are taken in; an image pickup device mounted in said housing; an optical element for forming images obtained from said extraneous light rays taken in through said plurality of entrance windows on an imaging plane of said image pickup device; a light shielding member that is provided in such a way as to be upright on said imaging plane of said image pickup device and to divide said imaging plane of said image pickup device into imaging fields on which images are respectively formed from said extraneous light rays taken in through the plurality of entrance windows; an aperture limitation member which is placed in a stage preceding said light shielding member and has an aperture for limiting a size of an incidence optical path of each of extraneous light rays from which images are formed on the imaging plane of said image pickup device; a diaphragm member that is disposed in the stage preceding said light shielding member in such a manner as to be able to move in a direction perpendicular to an optical axis, for regulating the quantities of incident light of said imaging fields by overlapping with said aperture in a direction of the optical axis; and drive means for moving said diaphragm member in a direction perpendicular to the optical axis. - View Dependent Claims (2, 3, 4, 5)
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6. A camera comprising:
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a housing having a plurality of entrance windows, through each of which extraneous light rays are taken in; an image pickup device mounted in said housing; an optical element for forming images obtained from said extraneous light rays, taken in through said plurality of entrance windows on an imaging plane of said image pickup device; a light shielding member that is provided in such a way as to be upright on an imaging plane of said image pickup device and to divide said imaging plane of said image pickup device into imaging fields on which images are respectively formed from said extraneous light rays taken in through the plurality of entrance windows and that is constructed in such a manner as to be able to rock about an edge portion thereof which is at the side of said image plane; an aperture limitation member which is placed in a stage preceding said light shielding member and has an aperture for limiting a size of an incidence optical path of each of extraneous light rays from which images are formed on the imaging plane of said image pickup device; and drive means for rocking said light shielding member. - View Dependent Claims (7, 8)
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9. An apparatus for visual recognition of surroundings of a vehicle, comprising:
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a housing mounted in a front portion of a vehicle and provided with a plurality of entrance windows through each of which extraneous light rays are taken in from the surroundings of said vehicle; an image pickup device mounted in said housing so that an imaging plane thereof faces a region located in front of said vehicle; an optical element that is disposed in said housing and is operative to form images obtained from said extraneous light rays taken in through the plurality of entrance windows on said imaging plane of said image pickup device; a light shielding member that is provided in such a way as to be upright on said imaging plane of said image pickup device and to divide said imaging plane of said image pickup device into imaging fields on which images are respectively formed from said extraneous light rays taken in through the plurality of entrance windows; an aperture limitation member which is placed in a stage preceding said light shielding member and has an aperture for limiting a size of an incidence optical path of each of extraneous light rays from which images are formed on the imaging plane of said image pickup device; a diaphragm member that is disposed in the stage preceding said light shielding member in such a manner as to be able to move in a direction perpendicular to an optical axis, for regulating the quantities of incident light of said imaging fields by overlapping with said aperture in the direction of the optical axis; drive means for moving said diaphragm member in a direction perpendicular to the optical axis; and display means for displaying an image signal representing said images formed on the imaging plane of said image pickup device. - View Dependent Claims (10)
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Specification