The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 30, 2003

Filed:

May. 14, 1997
Applicant:
Inventor:

Kenneth E. Johnson, Bloomington, MN (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/700 ; F41G 1/00 ;
U.S. Cl.
CPC ...
G02B 2/700 ; F41G 1/00 ;
Abstract

The slotted peep of this invention is a device that eliminates the detrimental effects of diffracted light from its aperture. Diffraction causes light to bend toward and perpendicular to an object's edge. In a current peep's aperture diffracted light is neither controlled nor eliminated. Diffracted light creates several shortcomings in current peeps which impair their accuracy and utility. The current aperture must be oversized to allow space for the diffracted light. The visual size and shape of the current aperture will vary with changes in the light diffraction. Under low light conditions, enough light may be diffracted within the current peep aperture that a user may not be able to see through the peep. A slotted peep is designed to eliminate detrimental effects of diffracted light from its aperture. By surrounding an open space with the open ends of slots, a space is defined that has virtually no physical edges. A slot of the slotted peep confines diffracted light within the slot. “(FIG. )” shows slotted peep,“( )”. What a user looking through the slotted peep would see is, “( )”. Light diffracted perpendicular to the edges of the slots darkens the slots. Since light is diffracted parallel to the preimeter of the sloted peep's aperture, diffraction will have no effect on the aperture. The slotted peep's aperture will virtually free of diffracted light. The slotted peep will not have the aforementioned shortcomings of current peeps. The slotted peep should be made in a rigid material. There is a need for a peep that is designed to eliminate the detrimental effects of diffracted light from its aperture.


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