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US 6,487,371 B1Granted
Range finder device having mode for removing steady light components and mode for not removing steady light components
AssigneeOlympus Optical Co., Ltd.
InventorOsamu Nonaka
Life of this patent
Estimating the term…
Abstract
A range finder device includes a light projecting section for projecting range finding light onto an object and a light receiving section for monitoring the image pattern of the object. An integrating circuit integrates an output signal from the light receiving section. A steady light component removing section prevents an output signal accompanying steady light irradiated steadily onto the light receiving section from being fed to the integrating circuit. A control section sets a first mode in which the steady light component removing section is operated during range finding or a second mode in which the steady light component removing section is not operated based on an output signal from the light receiving section.
Claims25
A range finder device comprising:
- a light projecting section for projecting range finding light onto an object;
- a light receiving section for monitoring image patterns of the object;
- an integrating circuit for integrating an output signal from the light receiving section;
- a steady light component removing section for preventing an output signal accompanying steady light irradiated steadily onto the light receiving section from being fed to the integrating circuit;
- and
- a control section for setting, during range finding, a first mode in which the steady light component removing section is operated with range finding light being projected or a second mode in which the steady light component removing section is not operated, based on an output signal from the light receiving section.
3 more elements
A range finder device comprising:
- a light projecting section for projecting range finding light onto an object;
- a light receiving section onto which reflection signal light from the object is irradiated and which monitors image patterns based on the reflection signal light;
- an integrating circuit for integrating an output signal from the light receiving section;
- a steady light component removing section for preventing an output signal accompanying steady light irradiated steadily onto the light receiving section from being fed to the integrating circuit;
- a first determining section for determining a spot configuration of the reflection light signal;
- a second determining section for determining a contrast of an image pattern of the object;
- and
- a control section for setting a first mode in which the steady light component removing section is operated with range finding light being projected or a second mode in which the steady light component removing section is not operated, based on the determination results of at least one of the determination by the first determining section and the determination by the second determining section.
5 more elements
A range finder device comprising:
- a light projecting section for projecting range finding light onto an object;
- a light receiving section for monitoring image patterns of the object;
- an integrating circuit for integrating an output signal from the light receiving section;
- a first steady light component removing section for preventing an output signal accompanying steady light irradiated steadily onto the light receiving section from being fed to the integrating circuit;
- and
- a second steady light component removing section for further removing steady light components from an output signal from the first steady light component removing section.
3 more elements
A range finder device comprising:
- a light projecting section for projecting range finding light onto an object;
- a light receiving section for receiving reflection signal light from the object;
- an integrating circuit for integrating an output from the light receiving section;
- a steady light component removing section for preventing a signal based on light irradiated steadily onto the light receiving section from being input to the integrating circuit;
- a determining section for determining a spot configuration of the reflection signal light or a contrast of an image incident onto the light receiving section according to the result of a first range finding step in which a preliminary range finding operation is performed accompanying the control of the light projecting section, without the steady light component removing section being operated;
- and
- a control section for determining, based on determination results by the determining section, whether to perform a second range finding step subsequent to the first range finding step or to perform a steady light component removing operation in the second range finding step.
4 more elements
A range finder device comprising:
- a light projecting section for projecting range finding light onto an object;
- a light receiving section for receiving reflection signal light from the object;
- an integrating circuit for integrating an output from the light receiving section;
- a steady light component removing section for preventing a signal based on light irradiated steadily onto the light receiving section from being input to the integrating circuit;
- a determining section for determining a spot configuration of the reflection signal light or a contrast of an image incident onto the light receiving section according to the result of a first range finding step in which a preliminary range finding operation is performed accompanying the control of the light projecting section, with the steady light component removing section being operated;
- and
- a control section for determining, based on determination results by the determining section, whether or not to perform a second range finding step subsequent to the first range finding step.
4 more elements
A range finder device comprising:
- light projecting means for projecting range finding light onto an object;
- light receiving means for monitoring an image pattern of the object;
- integrating means for integrating an output signal from the light receiving means;
- steady light component removing means for preventing an output signal accompanying steady light irradiated steadily onto the light receiving means from being fed to the integrating means;
- and
- control means for setting, during range finding, a first mode in which the steady light component removing means is operated or a second mode in which the steady light component removing means is not operated, based on an output signal from the light receiving means.
3 more elements
A range finder device comprising:
- light projecting means for projecting range finding light onto an object;
- light receiving means onto which reflection signal light from the object is irradiated and which monitors image patterns of the object based on the reflection signal light;
- an integrating circuit for integrating an output signal from the light receiving means;
- steady light component removing means for preventing an output signal accompanying steady light irradiated steadily onto the light receiving means from being fed to the integrating means;
- first determining means for determining a spot configuration of the reflection light signal;
- second determining means for determining a contrast of an image pattern of the object;
- and
- control means for setting a first mode in which the steady light component removing means is operated or a second mode in which the steady light component removing means is not operated, based on the determination results of at least one of the determination by the first determining means and the determination by the second determining means.
5 more elements
A range finder device comprising:
- light projecting means for projecting range finding light onto an object;
- light receiving means for monitoring image patterns of the object;
- integrating means for integrating an output signal from the light receiving means;
- first steady light component removing means for preventing an output signal accompanying steady light irradiated steadily onto the light receiving means from being fed to the integrating means;
- and
- second steady light component removing means for further removing steady light components from an output signal from the first steady light component removing means.
3 more elements
A range finder device comprising:
- light projecting means for projecting range finding light onto an object;
- light receiving means for receiving reflection signal light from the object;
- integrating means for integrating an output from the light receiving means;
- steady light component removing means for preventing a signal based on light irradiated steadily onto the light receiving means from being input to the integrating means;
- determining means for determining a spot configuration of the reflection signal light or a contrast of an image incident onto the light receiving means according to the result of a first range finding step in which a preliminary range finding operation is performed accompanying the control of the light projecting means without the steady light component removing means being operated;
- and
- control means for determining, based on determination results by the determining means, whether to perform a second range finding step subsequent to the first range finding step or to perform a steady light component removing operation in the second range finding step.
4 more elements
A range finder device comprising:
- light projecting means for projecting range finding light onto an object;
- light receiving means for receiving reflection signal light from the object;
- integrating means for integrating an output from the light receiving means;
- steady light component removing means for preventing a signal based on light irradiated steadily onto the light receiving means from being input to the integrating means;
- determining means for determining a spot configuration of the reflection signal light or a contrast of an image incident onto the light receiving means according to the result of a first range finding step in which a preliminary range finding operation is performed accompanying the control of the light projecting means, with the steady light component removing means being operated;
- and
- control means for determining, based on determination results by the determining means, whether or not to perform a second range finding step subsequent to the first range finding step.
4 more elements
A range finder device comprising:
- a light projecting section for projecting range finding light onto an object;
- a light receiving section for monitoring image patterns of the object;
- an integrating circuit for integrating an output signal from the light receiving section;
- a steady light component removing section for preventing an output signal accompanying steady light steadily irradiated onto the light receiving section from being fed to the integrating circuit;
- a determining section for determining whether or not a spot configuration of a reflected signal light can be recognized in an image pattern monitored by the light receiving section at a time of distance pre-measurement accompanying control by the light projecting section, and
- a control section for setting, during range finding, a first mode in which the steady light component removing section is operated or a second mode in which the steady light component removing section is not operated, based on determination results of the determining section.
3 more elements
Dependencies are inferred from the claim text.