Airborne system for display of collimated images
First Claim
1. An airborne system for the display of collimated images comprising a first and a second head-down sighting device provided as instrument panel equipment for the purpose of displaying a first and a second image produced respectively by a first and a second high-key image generator, the first sighting device aforesaid being provided with an optical device for collimating the first image, wherein the optical collimating device also serves to collimate the second image by utilizing in the second device an optical relay objective for transferring the second image in order to form an intermediate image at a distance from an optical mixing element interposed on the optical paths between the first image and the optical collimating device and between the intermediate image and said optical collimating device so that these two images are each seen at the focus of the optical collimating device, the function of said first generator being to produce a high-definition video frequency image and the function of said second generator being to produce a synthetic high-resolution symbol image.
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Accused Products
Abstract
An airborne display system is provided for viewing a high-definition collimated video image or a high-resolution collimated synthetic image or a combination of both images in superimposed relation by means of head-down display devices mounted on an aircraft instrument panel. The display system comprises a first head-down collimating assembly constituted by a monochrome cathode-ray tube and an optical objective, and a second head-down collimating assembly constituted by a color cathode-ray tube and the same collimating objective. An optical relay device is associated with a partly transparent mirror for transmitting the monochrome image and deviating the intermediate color image formed by the optical relay device to the objective. The reflected image as well as the transmitted image are both located at a distance from the optical objective which is equal to the focal distance.
32 Citations
9 Claims
- 1. An airborne system for the display of collimated images comprising a first and a second head-down sighting device provided as instrument panel equipment for the purpose of displaying a first and a second image produced respectively by a first and a second high-key image generator, the first sighting device aforesaid being provided with an optical device for collimating the first image, wherein the optical collimating device also serves to collimate the second image by utilizing in the second device an optical relay objective for transferring the second image in order to form an intermediate image at a distance from an optical mixing element interposed on the optical paths between the first image and the optical collimating device and between the intermediate image and said optical collimating device so that these two images are each seen at the focus of the optical collimating device, the function of said first generator being to produce a high-definition video frequency image and the function of said second generator being to produce a synthetic high-resolution symbol image.
Specification