COMPACT RIFLESCOPE DISPLAY ADAPTER

摘要

This disclosure describes a compact and lightweight riflescope display adapter configured to be affixed in front of the objective lens of a riflescope. The display adapter includes a receptacle that enables the adapter to be electrically connected to a ballistic computer, rangefinder or other targeting mechanism. The display adapter is configured to receive aimpoint information and project illuminated symbology that is brought into focus by the riflescope optics in such a way that the symbology appears to overlay an image of a scene on which the riflescope is focused. The display adapter includes a casing that houses processing circuitry, a light emitting diode, polarizer, polarized beam splitter, liquid crystal on silicon imaging element and reflective element. The display adapter also includes a light bar, spherical mirror, quarter-wave plate and an additional polarized beam splitter contained within the light bar.

主权项

1. A riflescope display adapter configured to:
receive externally computed aim point information while affixed to a riflescope; project an aimpoint symbol based on received aim point information such that the symbol overlays an image visible through an eyepiece of the riflescope, wherein the display adapter comprises:
a controllable reflection mechanism comprising multiple reflective elements operable to facilitate display of an aimpoint symbol by reflecting light in response to control signals; a first polarizing beam splitter operable to:
facilitate display of an aimpoint symbol by reflecting light towards the reflection mechanism; andtransmit light reflected by the reflection mechanism; a transmissive light bar, the light bar having a first end and a second end, the first end closer to the reflection mechanism than the second end; a first reflective element disposed at the first end of the light bar such that the first reflective element is positioned to reflect light in a first direction, towards the second end of the light bar; a second reflective element disposed at the second end of the light bar and configured to reflect light in a second direction opposite the first direction; a waveplate operable to modify a polarization state of light reflected by the second reflective element; and a second polarizing beam splitter disposed within the light bar and between the first reflective element and the second reflective element, wherein the second polarizing beam splitter is configured to transmit light reflected by the first reflective element such that the light is incident at an objective lens of the riflescope.