Optical system for viewing a remote location

• US 5,619,370 A
• Filed: 03/28/1994
• Issued: 04/08/1997
• Est. Priority Date: 03/28/1994
• Status: Expired due to Fees

• Current Assignee: Patrick J. Guinosso
• Original Assignee: Patrick J. Guinosso
• Inventors: Guinosso, Patrick J.
• Primary Examiner(s): Dzierzynski, Paul M.
• Assistant Examiner(s): SIKDER, MOHAMMAD YUNUS
• Time in patent office: 1107 Days
• Field of Search: 385/116, 385/119, 385/118, 359/400, 359/362, 359/402, 359/503, 359/739, 359/749
• US Class Current: 359/362
• CPC Class Codes: B60R 1/00 Optical viewing arrangements house mirrors and spies A47G1/00; antiglare equipment, e.g. polarising, for windscreens or windows B60J3/00; visual aids for tractors B62D49/0614; devices per se G02B
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/0169 Supporting or connecting means other than the external walls
• CPC Class Codes: G02B 27/01 Head-up displays
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 6/06 the relative position of the fibres being the same at both ends, e.g. for transporting images

Abstract

An optical apparatus that enables an object at a first location to be viewed from a second remote location. The optical apparatus includes at least one objective lens assembly that views the object at the first location. The objective lens assembly focuses the viewed image onto the input plane of an image conduit. The fiber optic conduit propagates the image to the second remote location, wherein the image is projected from the image conduit onto the back surface of a substantially transparent planar member. The back surface of the planar member is not highly polished. As a result, the image projected onto the back surface does not pass directly through the planar member. The reflections caused by the unpolished nature of the surface allow the image to be viewed on the back surface of the planar member through the body of the planar member.

Claims

1. In a vehicle having a reverse gear setting and a blind spot behind the vehicle that can not be seen by the operator of the vehicle when sitting within the vehicle, an optical system for viewing the blind spot, comprising:

at least one objective lens arrangement coupled to said vehicle, wherein said at least one objective arrangement is oriented to view the blind spot;

a rear view mirror assembly disposed within said vehicle, said rear view mirror assembly including;

a focusing lens arrangement; and

an imaging plane disposed proximate said focusing lens arrangement, said imaging plane having a front surface viewable from within the vehicle and a rear surface oriented toward said focusing lens arrangement, wherein said front surface of said imaging plane appears substantially reflective from within said vehicle when second surface is not illuminated from said focusing lens arrangement; and

an image conduit coupling said at least one objective lens arrangement to said rear view mirror assembly at a point proximate said focusing lens arrangement, wherein an image of the blind spot, viewed by said at least one objective lens arrangement, is capable of being propagated across said image conduit and directed toward said focusing lens arrangement, and said focusing lens arrangement focuses the image onto said rear surface of said imaging plane for viewing through said imaging plane; and

an optical diaphragm operationally coupled to the reverse gear setting of the vehicle for selectively changing the system between an ON condition when the vehicle is in the reverse gear setting, wherein the image from said at least one objective lens impinges upon said rear surface of said imaging plane, and an OFF condition when the vehicle is not in the reverse gear setting, wherein the image from said at least one objective lens is obscured prior to reaching said imaging plane.

2. The optical system according to claim 1, wherein said image conduit has an input end and an output end and said at least one objective lens arrangement includes both an objective lens, that accepts an impinging image from an object, and at least one focusing lens that focuses the image onto said input end of said image conduit, whereby the image is propagated to said output end of said image conduits, when in said ON condition.

3. The optical system according to claim 2, further including an image intensifying means for amplifying the intensity of the image impinging upon said input end of said image conduit.

4. The optical system according to claim 1, wherein said imaging plane is a substantially transparent plate, wherein said focusing lens arrangement focuses the image on said rear surface of said imaging plane thereby making the image visible through said imaging plane.

5. The optical system according to claim 1, having multiple objective lens arrangements for receiving multiple impinging images wherein each of the images is simultaneously displayed on separate regions of said imaging plane.

6. In an automobile that is operational in a forward moving condition and a reverse moving condition, an optical arrangement for viewing at least one target region proximate an automobile, comprising:

at least one objective lens arrangement coupled to the automobile at a position where said at least one objective lens arrangement views an image of said at least one target region;

a rearview mirror assembly disposed within the automobile;

an image conduit coupling said at least one objective lens arrangement to said rearview mirror assembly, wherein the image viewed of said at least one target region is displayed within said rearview mirror assembly; and

an electrically controlled optical diaphragm disposed in said at least one objective lens arrangement, wherein said electrically controlled optical diaphragm selectively obscures the image viewed by said at least one objective lens arrangement when the automobile is in said forward moving condition and enables the image to be viewed in said rearview mirror assembly when the automobile is in said reverse moving condition.

7. The optical arrangement according to claim 6, wherein said image conduit has an input end and an output end and said at least one objective lens arrangement includes at least one focusing lens that focuses the image of said at least one target region onto said input end of said image conduit, whereby the image is propagated to said output end in said rearview mirror assembly.

8. The optical arrangement according to claim 7, wherein said rearview mirror assembly includes a planar member plate having a front surface and a back surface, wherein the image emanating from said output end of said image conduit impinge upon said back surface of said planar member and can be viewed by looking said front surface of said planar member.

9. The optical arrangement according to claim 6, further including an image intensifying means disposed in said at least one objective lens arrangement wherein said image intensifier means increases the optical intensity in the visual spectra that is associated with the image viewed by said at least one objective lens arrangement.

10. In a vehicle having a rear view mirror assembly, a reverse gear setting and a forward gear setting, a method of providing a viewable image of a blind spot behind a vehicle to a person operating the vehicle, comprising the steps of:

positioning an objective lens assembly on the vehicle, wherein said objective lens assembly views the blind spot;

focusing the image viewed by said objective lens assembly onto a first end of an image conduit that extends from said first end proximate said objective lens assembly to a second end within said rearview mirror assembly, wherein the image viewed by said objective lens assembly is propagated through said image conduit from said first end to said second end;

viewing the image of said blind spot through said rearview mirror assembly when said vehicle is in said reverse gear setting; and

providing an optical diaphragm within said at least one objective lens arrangement that is operationally controlled by said reverse gear setting, wherein said optical diaphragm is selectively controlled to prevent the image viewed by said at least one objective lens arrangement from being received by said image conduit when the vehicle is in said forward gear setting.

11. The method according to claim 10, wherein the image viewed by said objective lens assembly has a given intensity and said method further includes the step increasing the intensity of the image before the image is focused onto said first end of said image conduit.