Apparatus and method for preventing a picture from being taken by flash photography

• US 6,937,163 B2
• Filed: 05/14/2003
• Issued: 08/30/2005
• Est. Priority Date: 05/14/2003
• Status: Expired due to Fees

• Current Assignee: Jeremy J. Caulfield, Joseph A. Caulfield
• Original Assignee: Jeremy J. Caulfield, Joseph A. Caulfield
• Inventors: Caulfield, Joseph A., Caulfield, Jeremy J.
• Primary Examiner(s): Trieu, Van T.
• Application Number:
  US10/437,853
• Publication Number:
  US 20040227634A1
• Time in Patent Office: 839 Days
• Field of Search: 340/425.5, 340/436, 340/905, 340/933, 340/936, 340/937, 340/332, 362/494, 362/540, 362/545, 362/497, 353/122, 353/30, 353/94, 353/112, 348/132, 348/149
• US Class Current: 340/937
• CPC Class Codes: G03B 17/12 with means for supporting objectives, supplementary lenses, filters, masks, or turrets
• CPC Class Codes: G08G 1/0175 by photographing vehicles, e.g. when violating traffic rules

Abstract

An apparatus and method for preventing a photographic image from being taken has a triggering mechanism which will generate a signal when detecting a light signal indicative of a camera flash. A flash unit is coupled to the triggering mechanism for generating a counteracting flash after receiving the signal generated by the triggering mechanism. By generating a counteracting flash a very short time after detecting the flash, the apparatus saturates an area of the camera'"'"'s image field during the camera'"'"'s exposure period. Thus the image in that area is obscured.

Claims

1. An apparatus for obscuring a photographic image comprising, in combination:

a triggering mechanism which will generate a signal when detecting a light signal which has characteristics of a photo flash illumination from a camera;

a sensor for detecting the light source;

a flash unit coupled to the triggering mechanism for generating a counteracting flash after receiving the signal generated by the triggering mechanism; and

a power supply for powering the apparatus;

wherein the triggering mechanism delays sending the generated signal for a short period of time after detecting the light source.

2. An apparatus for obscuring a photographic image in accordance with claim 1 wherein the triggering mechanism delays sending the generated signal for 100 microseconds after detecting the light source.

3. An apparatus for obscuring a photographic image in accordance with claim 1 wherein the power supply is a battery.

4. An apparatus for obscuring a photographic image in accordance with claim 1 wherein the power supply is a DC voltage source from an automobile.

5. An apparatus for obscuring a photographic image in accordance with claim 1 wherein the power supply is a solar source.

6. A method for obscuring a photographic image from being taken comprising the steps of:

sensing a light source indicative of a flash illumination from a camera;

generating a counteracting flash to saturate an area where the photographic image is being taken;

waiting for the camera'"'"'s overexposure period before generating the counteracting flash.

7. The method of claim 6 further comprising the steps of providing a sensor for sensing the light source indicative of a flash illumination from a camera.

8. The method of claim 7 further comprising the steps of providing a flash unit for generating the counteracting flash to saturate the area where the individual'"'"'s picture is being taken.

9. The method of claim 8 further comprising the step of providing a triggering device coupled to the sensor for sending a signal to the flash unit that a light source indicative of a flash illumination from a camera has been detected and to signal the flash unit to generate the counteracting flash to saturate the area where the individual'"'"'s picture is being taken.