View expanding apparatus
First Claim
Patent Images
1. A view expanding apparatus comprising:
- a lens having a negative focal length for providing an expanded field of view,a mirror secured to one edge of said lens and angularly displaced therefrom, said mirror having a reflecting surface for reflecting the expanded field of view,arm members including means for mounting said apparatus on a surface, anda pin, said lens, said mirror and said arm members being secured to said pin for pivoting relative to each other about said pin, said securing providing adjustability of said angular displacement.
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Abstract
A view expanding apparatus mounted on the inside lower right hand corner of an automobile windshield for eliminating the blind spot in the rear view of a motorist. A mirror is pivotally coupled to a negative lens, which may be a Fresnel lens, and the mirror lens construction is secured to the inside of the windshield. The negative lens expands the field of view and the angle between the lens and the mirror is adjustable so that the mirror reflects the expanded field of view for observation by the driver.
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Citations
18 Claims
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1. A view expanding apparatus comprising:
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a lens having a negative focal length for providing an expanded field of view, a mirror secured to one edge of said lens and angularly displaced therefrom, said mirror having a reflecting surface for reflecting the expanded field of view, arm members including means for mounting said apparatus on a surface, and a pin, said lens, said mirror and said arm members being secured to said pin for pivoting relative to each other about said pin, said securing providing adjustability of said angular displacement. - View Dependent Claims (2, 3, 4, 14)
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5. A system for expanding the side and rear view of a vehicle driver comprising:
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a lens having a negative focal length for providing an expanded side and rear view, a mirror having a reflecting surface for reflecting the expanded view in the direction of the driver to enable the driver to observe the expanded view, securing means for securing one edge of said lens to one edge of said mirror at an angular displacement therefrom, arm members connected to said securing means for mounting said system to the interior of the windshield of the vehicle, said securing means including pin means, said lens, said mirror and said arm members being secured to said pin means for pivoting relative to each other about said pin means, said securing providing adjustability of said angular displacement.
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6. A method of expanding the side and rear view of a driver of a vehicle comprising the steps of:
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mounting a lens having a negative focal length inside the vehicle near the lower right hand corner of the windshield for providing an expanded view to the rear along the side of the vehicle away from the driver, and reflecting the expanded view transmitted by said lens to the driver using a single mirror, inside the vehicle. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A view expanding apparatus comprising:
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a Fresnel lens having a negative focal length for providing an expanded field of view, a mirror secured to one edge of said Fresnel lens and angularly displaced therefrom, said mirror having a reflecting surface for reflecting the expanded field of view, arm members including means for mounting said apparatus on a surface, and a pin, said lens, said mirror and said arm members being secured to said pin for pivoting relative to each other about said pin, said securing providing adjustability of said angular displacement. - View Dependent Claims (13)
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15. A system for expanding the side and rear view of a vehicle driver comprising:
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a Fresnel lens having a negative focal length for providing an expanded side and rear view, and a mirror having a reflecting surface for reflecting the expanded view in the direction of the driver to enable the driver to observe the expanded view, securing means for securing one edge of said Fresnel lens to one edge of said mirror at an angular displacement therefrom, arm members connected to said securing means for mounting said system to the interior of the windshield of the vehicle, said securing means including pin means, said lens, said mirror and said arm members being secured to said pin means for pivoting relative to each other about said pin means, said securing providing adjustability of said angular displacement.
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16. A method of expanding the side and rear view of a driver of a vehicle comprising the steps of:
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mounting a Fresnel lens having a negative focal length inside the vehicle near the lower right hand corner of the windshield for providing an expanded view to the rear along the side of the vehicle away from the driver, and reflecting the expanded view transmitted by said Fresnel lens to the driver using a single mirror, inside the vehicle. - View Dependent Claims (17, 18)
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Specification