초록 ▼

A range finder for optically or electronically measuring distance from an object by comparison of a known curvilinear form or spectrum of points with the object being measured. The range finder, whether optical or electronic, is provided with different size outlines or stored images of the object, t

A range finder for optically or electronically measuring distance from an object by comparison of a known curvilinear form or spectrum of points with the object being measured. The range finder, whether optical or electronic, is provided with different size outlines or stored images of the object, the different sizes representing the object as it would appear at different distances from the viewer. In its optical form, a number of different size outlines are provided on a transparency through which the object itself is viewed. The outline of the object as actually viewed is compared or matched with the known outline and the distance to the object is determined by relating the size of the actual outline to the closest size outline. In the electronic form, the comparison is made electronically rather than optically or visually. In both forms, only a portion of the object being measured need be visible for making the comparison.

대표청구항 ▼

A range finder for determining distances to objects, comprising: a housing through which an object is viewed; means associated with the housing for storing multiple images of said object, said multiple images having different sizes representative of the object at different distances from the observe

A range finder for determining distances to objects, comprising: a housing through which an object is viewed; means associated with the housing for storing multiple images of said object, said multiple images having different sizes representative of the object at different distances from the observer; and means for comparing all or part of the viewed object with all or part of the stored images and correlating the viewed object with the images to determine the distance of the object from the observer based on the correlation, said means including means for electronically varying the size and orientation of the image, resulting in a moving image which facilitates the ability to rapidly and accurately compare the image with the object.