Title:
OPTICAL APPARATUS
Document Type and Number:
Japanese Patent JPS5344056
Kind Code:
A
Abstract:
An optical device for use as a gunsight, telescope or viewfinder is disclosed, the device being capable of indicating the distance of the target from the user. This is accomplished by a reticle in, or associated with, the sighting device, the reticle being calibrated to give the viewer an instant indication of range without requiring mechanical adjustments.
Inventors:
KORIN ARUBAATO MAADOTSUKU
Application Number:
JP9753777A
Publication Date:
April 20, 1978
Filing Date:
August 16, 1977
Export Citation:
Assignee:
MURDOCH COLIN ALBERT
International Classes:
G01C3/00; F41G1/12; F41G1/473; G02B23/10; G02B23/14; G02B27/32; (IPC1-7): G01C3/00; G03B23/00