EP0499678B1 - Dispositif d'essai pour appareil de balayage optique infra-rouge - Google Patents

Dispositif d'essai pour appareil de balayage optique infra-rouge Download PDF

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Publication number
EP0499678B1
EP0499678B1 EP19910102591 EP91102591A EP0499678B1 EP 0499678 B1 EP0499678 B1 EP 0499678B1 EP 19910102591 EP19910102591 EP 19910102591 EP 91102591 A EP91102591 A EP 91102591A EP 0499678 B1 EP0499678 B1 EP 0499678B1
Authority
EP
European Patent Office
Prior art keywords
optical device
scanning
detectors
surface mirror
target
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19910102591
Other languages
German (de)
English (en)
Other versions
EP0499678A1 (fr
Inventor
Thomas Dipl.-Ing. Hein
Andre Dipl.-Phys. Noack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell GmbH
Original Assignee
Honeywell GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honeywell GmbH filed Critical Honeywell GmbH
Priority to DE59104964T priority Critical patent/DE59104964D1/de
Priority to EP19910102591 priority patent/EP0499678B1/fr
Publication of EP0499678A1 publication Critical patent/EP0499678A1/fr
Application granted granted Critical
Publication of EP0499678B1 publication Critical patent/EP0499678B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/14—Indirect aiming means
    • F41G3/145—Indirect aiming means using a target illuminator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/32—Devices for testing or checking
    • F41G3/326—Devices for testing or checking for checking the angle between the axis of the gun sighting device and an auxiliary measuring device

Definitions

  • the present invention relates to an optical device according to the preamble of claim 1.
  • Such an optical device is used when testing a scanning / receiving unit, as is specified in particular in the form of an infrared (IR) multi-line scanning device (line scanner) in a reconnaissance aircraft.
  • IR infrared
  • line scanner line scanner
  • a rotating rotating mirror creates a line-shaped image of the terrain across the direction of flight on an IR detector line.
  • the scanning / receiving unit on a turntable.
  • Different scanning areas can be simulated by rotating the rotary table.
  • a so-called blackbody radiator and line targets on a target wheel periodic, rectangular temperature distributions in the flight direction (ALT) and transverse to the flight direction (ACT) are generated in the focal plane of a collimator. These temperature distributions are imaged to infinity by the collimator, with plane waves of different directions and amplitudes propagating through the collimator housing. These flat waves are transferred from a deflecting mirror to the Rotating mirror of the scanning unit reflected. In its focal plane, the scanning unit generates an image of the target, which is read out by the detector line and a downstream electronics.
  • the image of the line target usually does not completely hit the detector element. This has been remedied in this case by adjusting the scanning / receiving unit on the turntable or by adjusting the height of the target wheel.
  • operator intervention is time consuming and undesirable.
  • a parabolic mirror segment 12 is arranged in a housing 10 shielding against external rays, onto which a line target is projected via a folding mirror 14 arranged outside the optical beam path of the parabolic mirror segment 12.
  • the stroke targets are in different positions of a target wheel 16 and they are predetermined by stroke patterns of different sizes.
  • a servomotor 20 controls the target wheel 16 into the desired position.
  • An IR radiation source 18 is located together with a helium / neon laser 22 on a displacement table 24.
  • the laser 22 is used for focusing purposes and can be placed in the place of the radiation source 18 in order to focus the system.
  • the target wheel 16, the IR radiation source 18, the servo motor 20 and the laser 22 are arranged in a housing 26 which is located in front of the entrance aperture 28 of the collimator.
  • the parabolic mirror segment 12 makes plane waves from the diverging rays of the target image, ie it images the target image that has finally been removed to infinity.
  • the plane waves meet a 45 ° deflecting mirror 30, which allows them to exit upwards through the exit aperture 32 of the collimator.
  • the deflection mirror 30 can be pivoted about an axis 34, a stepping motor 36 making the adjustment.
  • the adjustment possibility is ⁇ 5 °, the step increment being 1/1000 °.
  • Various scanning areas can be simulated by rotating about an axis 42 shown in accordance with a rolling movement of the aircraft carrying the scanning / receiving unit.
  • the drive and the detection of the assumed positions of the turntable 40 takes place via a servo motor / coding device 44.
  • the shift table 24, the IR radiation source 18 and the servo motor 20 are connected to a controller 46.
  • a controller 48 is also provided for the stepper motor 36.
  • An amplifier 50 drives the servo motor / coding device 44.
  • a calibration kit 52 is used to control the temperature of the IR radiation source 18. All of these elements 48, 50, 52 are connected via a bus 56 to a computer 58, which is operated via a keyboard and which allows results to be checked via a monitor.
  • the collimator housing 10 sits on one against Vibration-protecting table 64.
  • the turntable 40 sits on a stand 66, which in turn is fixed on the table 64. 2, a scanning receiving unit 68 is arranged on the carrier arm 38 of the turntable 40.
  • the turntable 40 is adjustable on the table 64 together with the stand 66.
  • FIGS. 4a and 4b how a correction can be carried out via the controllable deflecting mirror 30 in the event of a misalignment of a target line 70 with respect to a detector element 72.
  • This correction is particularly necessary if a target line 70 of the smallest dimension (50 »m) is to be imaged on the smallest detector element (40» m) in the direction of flight.
  • the ideal alignment shown in FIG. 4b is automatically achieved by detecting the detector output signal and adjusting the deflection mirror 30 in the sense of maximizing the detector output signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Claims (5)

  1. Dispositif optique pour former une image de cibles infiniment éloignées sur des détecteurs d'une unité de réception à balayage moyennant l'utilisation d'un collimateur, l'image collimatée de la cible étant envoyée, par l'intermédiaire d'un miroir de renvoi, aux détecteurs de l'unité de réception à balayage, caractérisé en ce que l'angle de basculement du miroir de renvoi (30) est modifiable.
  2. Dispositif optique selon la revendication 1, caractérisé en ce que l'angle de basculement du miroir de renvoi (30) peut être commandé par l'unité de réception à balayage (68) de manière à rendre maximum le signal de sortie de l'unité de réception à balayage.
  3. Dispositif optique selon la revendication 2, caractérisé en ce que le miroir de renvoi (30) peut être déplacé selon des incréments angulaires par l'intermédiaire d'un moteur pas-à-pas (36).
  4. Dispositif optique selon la revendication 3, caractérisé en ce que le moteur pas-à-pas (36) est commandé par un ordinateur (58) par l'intermédiaire d'une unité de commande (48) et qu'un bus (56) relie aussi bien l'unité de réception à balayage (68) que l'unité de commande (48) à l'ordinateur.
  5. Dispositif optique selon l'une des revendications 1 à 4, caractérisé en ce que les cibles (70) sont des cibles thermiques et que les détecteurs (72) sont des détecteurs à infrarouge.
EP19910102591 1991-02-22 1991-02-22 Dispositif d'essai pour appareil de balayage optique infra-rouge Expired - Lifetime EP0499678B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59104964T DE59104964D1 (de) 1991-02-22 1991-02-22 Testgerät für einen optischen I.R. Abtaster.
EP19910102591 EP0499678B1 (fr) 1991-02-22 1991-02-22 Dispositif d'essai pour appareil de balayage optique infra-rouge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910102591 EP0499678B1 (fr) 1991-02-22 1991-02-22 Dispositif d'essai pour appareil de balayage optique infra-rouge

Publications (2)

Publication Number Publication Date
EP0499678A1 EP0499678A1 (fr) 1992-08-26
EP0499678B1 true EP0499678B1 (fr) 1995-03-15

Family

ID=8206439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910102591 Expired - Lifetime EP0499678B1 (fr) 1991-02-22 1991-02-22 Dispositif d'essai pour appareil de balayage optique infra-rouge

Country Status (2)

Country Link
EP (1) EP0499678B1 (fr)
DE (1) DE59104964D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109945743A (zh) * 2019-03-25 2019-06-28 由春华 主动照明式同步监测共口径跟瞄发射***及方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7159986B2 (en) 2002-05-20 2007-01-09 Swales & Associates, Inc. Wide field collimator
CN103970025B (zh) * 2013-02-04 2018-12-11 上海机电工程研究所 一种半实物仿真目标模拟***
CN105319984B (zh) * 2014-06-26 2019-05-03 上海机电工程研究所 一种机械多框架射频红外复合干扰半实物仿真***

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566109B1 (fr) * 1984-06-15 1991-08-30 Sfim Ensemble de visee optique, de designation et de poursuite d'objectif
US4917490A (en) * 1988-02-04 1990-04-17 The Boeing Company Boresight alignment measuring apparatus and method for electro-optic systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109945743A (zh) * 2019-03-25 2019-06-28 由春华 主动照明式同步监测共口径跟瞄发射***及方法

Also Published As

Publication number Publication date
EP0499678A1 (fr) 1992-08-26
DE59104964D1 (de) 1995-04-20

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