摘要:
The optical option attachment ring (10) of the present invention includes a rotator (40) having an abutting surface (41) that projects inward from the inner circumferential surface (20a) of the ring body (20) and abuts the front end (31) of the lens barrel (30) as well as an arcuate portion (42) that follows the upper end of the abutting surface (41). The optical option attachment ring (10) further includes a resilient member (B) that applies an urging force to the rotator (40) to rotate in the direction opposite to the above-mentioned rotation direction and a stopper (45) that abuts at least one of the one end (21) and the other end (22) so as to restrict the rotation caused by the urging force of the resilient member (B).
摘要:
In a FLIR/laser based targeting and imaging system, the ability to recognize, detect, locate, and/or track targets in an area of interest is significantly improved by reducing the fixed and dynamic alignment errors between the IR LOS and the laser LOS. Fixed alignment errors are reduced with an improved internal boresight module and corresponding boresight method. Dynamic alignment errors are reduced with an opto-electric subsystem that employs a single pitch bearing and a common pitch/yaw afocal for both the laser energy and the IR energy. A segmented window in the system housing includes a circular EMI grid pattern which significantly reduces the amount of off-axis EMI entering the optical pathways, and improved signal processing techniques are employed to enhance the quality of the IR image after the image has been digitized.
摘要:
In a FLIR/laser based targeting and imaging system, the ability to recognize, detect, locate, and/or track targets in an area of interest is significantly improved by reducing the fixed and dynamic alignment errors between the IR LOS and the laser LOS. Fixed alignment errors are reduced with an improved internal boresight module and corresponding boresight method. Dynamic alignment errors are reduced with an opto-electric subsystem that employs a single pitch bearing and a common pitch/yaw afocal for both the laser energy and the IR energy. A segmented window in the system housing includes a circular EMI grid pattern which significantly reduces the amount of off-axis EMI entering the optical pathways, and improved signal processing techniques are employed to enhance the quality of the IR image after the image has been digitized.
摘要:
A thermal imaging device (10) receives thermal infrared radiation from a viewed scene and responsively provides a visible image replicating the viewed scene. The imaging device (10) has a main housing with an optical aperture (16) at which a lens assembly (12) is attached. The lens assembly (12) has a number of lenses (200, 204, 208, 212, 216) sequentially mounted within a cylindrical housing (146), and defining an optical axis (199). A field-of-view-change mechanism (228) allows a user to select a wide field of view or a narrow field of view. The field-of-view-change mechanism (228) includes a rotatable field-of-view (FOV) ring (226) which rotates a tumbler (210) with a pair of lenses (208, 212) mounted therein. The tumbler (210) is positioned between a first position providing a wide field of view and a second position providing a narrow field of view. A rack (236) cooperates with the FOV ring (226) and the tumbler (210) so that rotation of the FOV ring (226) about a first axis (199) rotates the tumbler about a second axis (210') perpendicular to the first axis (199). An optical alignment mechanism (254) releasably retains the tumbler (210) in the first and second positions so that optical axes (199', 248') of the tumbler are respectively aligned with the optical axis (199) of the lens assembly (12).
摘要:
An infrared refractive reimaging afocal telescope (10) has an objective lens group (12), an eyepiece lens group (14), and a switching lens group (16). The system (10) provides a plurality of magnification modes in a compact arrangement. The system (10) utilizes lenses (36, 42, 44, 46) with diffractive surfaces to provide for magnification changes and chromatic aberration correction. The system provides for excellent image quality in all modes using a minimum number of lens elements.
摘要:
Die Erfindung betrifft einen reflexiven Spektralformer zur Änderung des Durchmessers eines kollimierten Lichtstrahls. Dabei sind in einem Strahlengang einander nachgeordnet mindestens eine erste Spiegelfläche (1) eines ersten Wölbungstyps, mindestens eine zweite Spiegelfläche und mindestens eine dritte Spiegelfläche (3, 3'), wobei die Formen der Spiegelflächen aufeinander abgestimmt sind, so dass ein über eine erste Spiegelfläche (1) oder eine dritte Spiegelfläche (3, 3') in den Strahlformer eintretender, kollimierter Lichtstrahl den Strahlformer über die dritte Spiegelfläche (3, 3') bzw. die erste Spiegelfläche (1) als kollimierter Lichtstrahl verlässt. Ein solcher Strahlformer weist mehrere dritte, gewölbte Spiegelflächen (3, 3') eines zweiten Wölbungstyps auf, welche sich in ihren Krümmungen unterscheiden. Der eine der beiden Wölbungstypen ist überwiegend konvex und der andere überwiegend konkav. Die mindestens eine zweite Spiegelfläche (2, 2') ist als Planspiegelfläche (9, 9') ausgestaltet, mit einer Planspiegelachse senkrecht zur Planspiegelfläche. Die mindestens eine zweite Spiegelfläche (2, 2') ist im Strahlengang zwischen der ersten und einer ausgewählten der mehreren dritten Spiegelflächen so angeordnet, dass die erste und die ausgewählte dritte Spiegelfläche konfokal zueinander positioniert sind. Außerdem weist der Strahlformer Auswahlmittel zur Auswahl einer der mehreren dritten gewölbten Spiegelflächen (3, 3') auf, wobei jeweils eine Position für eine Planspiegelfläche (9, 9') im Strahlengang entlang der Planspiegelachse zur variablen Einstellung des Verhältnisses der Durchmesser von eintretendem zu austretendem kollimierten Lichtstrahl ausgewählt wird.
摘要:
An optical system is described herein which has a compact, all reflective design that has multiple fields of view for imaging an object. The optical system also has identical viewing directions and can have several different configurations for adding laser range finding and designating components.