| 摘要 |
A sighting device for day and night use having a beam-splitting means mounted in the line of sight between a target and the user's eye, a first source of light, being a self-energized source of artificial light, a second source of light, being an ambient-light admitting element, at least one aiming mark illuminatable by at least one of the sources of light, and at least one light-directing means adapted to project the aiming mark onto the beam-splitting means.
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