A binocular eyepiece assembly for telescope, the assembly includes a casing, an optical lenses assembly, a beam splitter, a first reflecting mirror unit and a second reflecting mirror unit. The casing has a left ocular portion, a right ocular portion and a light receiving portion. The optical lenses assembly, the beam splitter, the first reflecting mirror unit and the second reflecting mirror unit are disposed inside the casing, and furthermore, the beam splitter is disposed on the light axis of the light axis. The beam splitter has a first reflecting surface, a second reflecting surface and an included angle. The included angle is disposed between the first reflecting surface and the second reflecting surface. The included angle is a right angle. A light beam is received via the light receiving portion, and the light beam will be transmitted to the optical lenses assembly and a beam splitter.

A binocular eyepiece assembly for telescope, the assembly includes a casing, an optical lenses assembly, a beam splitter, a first reflecting mirror unit and a second reflecting mirror unit. The casing has a left ocular portion, a right ocular portion and a light receiving portion. The optical lenses assembly, the beam splitter, the first reflecting mirror unit and the second reflecting mirror unit are disposed inside the casing, and furthermore, the beam splitter is disposed on the light axis of the light axis. The beam splitter has a first reflecting surface, a second reflecting surface and an included angle. The included angle is disposed between the first reflecting surface and the second reflecting surface. The included angle is a right angle. A light beam is received via the light receiving portion, and the light beam will be transmitted to the optical lenses assembly and a beam splitter.

A beamsplitter includes an optical substrate with a first surface configured to receive a beam of multi-spectral light, to reflect a first band of the multi-spectral light and to transmit a second band of the multi-spectral light through the optical substrate to be emitted from a second surface of the optical substrate opposite the first surface. The second surface is a freeform surface. A system includes a telescope configured to focus multi-spectral light into a beam. The system also includes a beamsplitter as described above optically coupled to the telescope so the first surface of the beamsplitter is configured to receive the beam of multi-spectral light from the telescope.

A beamsplitter includes an optical substrate with a first surface configured to receive a beam of multi-spectral light, to reflect a first band of the multi-spectral light and to transmit a second band of the multi-spectral light through the optical substrate to be emitted from a second surface of the optical substrate opposite the first surface. The second surface is a freeform surface. A system includes a telescope configured to focus multi-spectral light into a beam. The system also includes a beamsplitter as described above optically coupled to the telescope so the first surface of the beamsplitter is configured to receive the beam of multi-spectral light from the telescope.

The disclosure relates to a viewing optic. In one embodiment, the disclosure relates to a viewing optic having an integrated display system. In one embodiment, the disclosure relates to a viewing optic having an integrated display system for generating images that are projected into the first focal plane of an optical system.

The disclosure relates to a viewing optic. In one embodiment, the disclosure relates to a viewing optic having an integrated display system. In one embodiment, the disclosure relates to a viewing optic having an integrated display system for generating images that are projected into the first focal plane of an optical system.

An accessory that is attachable to a device comprises an image sensor and a beam splitter having a first surface and a second surface. The beam splitter is configured to impinge light upon the first surface, and split the light impinging upon the first surface into at least a first beam, a second beam, and a third beam. The first beam travels from a first opening of the device to a second opening of the device along an optical path when the accessory is attached to the device, the second beam travels from the first surface to the image sensor, and the third beam travels from the second surface to the image sensor or a beam dump.

An accessory that is attachable to a device comprises an image sensor and a beam splitter having a first surface and a second surface. The beam splitter is configured to impinge light upon the first surface, and split the light impinging upon the first surface into at least a first beam, a second beam, and a third beam. The first beam travels from a first opening of the device to a second opening of the device along an optical path when the accessory is attached to the device, the second beam travels from the first surface to the image sensor, and the third beam travels from the second surface to the image sensor or a beam dump.

A front sighting device includes a housing defining a visible light channel and an infrared light channel. An infrared image assembly is arranged in the infrared light channel, the infrared image assembly receives infrared light signals and converts the infrared light signals into electrical signals to be processed for forming an infrared image. An optical waveguide assembly is arranged in the visible light channel, and configured to transmit the visible light signals incident into the visible light channel from a first end to a second end of the visible light channel. The optical waveguide assembly is further configured to transmit the infrared image in the form of optical signals within the optical waveguide assembly and reflect the infrared image optical signals to the second end of the visible light channel for fusion with the visible light signals transmitted to the second end of the visible light channel.

A front sighting device includes a housing defining a visible light channel and an infrared light channel. An infrared image assembly is arranged in the infrared light channel, the infrared image assembly receives infrared light signals and converts the infrared light signals into electrical signals to be processed for forming an infrared image. An optical waveguide assembly is arranged in the visible light channel, and configured to transmit the visible light signals incident into the visible light channel from a first end to a second end of the visible light channel. The optical waveguide assembly is further configured to transmit the infrared image in the form of optical signals within the optical waveguide assembly and reflect the infrared image optical signals to the second end of the visible light channel for fusion with the visible light signals transmitted to the second end of the visible light channel.