JPH062122Y2 - Infrared measurement mount device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an infrared measuring device for measuring the infrared radiation amount of a measuring object, and more particularly to an infrared measuring mount device mounted on an aircraft.

[Conventional technology]

Figure 6 shows, for example, "Single or dual pod concepts for tactical recon."
conaissance ") (SPIE, 561, pp52, 1985) is a cross-sectional view showing a conventional infrared measuring device, in which (1) is an infrared transparent window and (21) is an infrared transparent window (1). Is an infrared detection device for detecting the infrared rays that are transmitted, (22) is an electronic circuit that processes the electric signal from the infrared detection device (21), (12) is an infrared transmission window (1), the infrared detection device (21) and electronic Circuit (2
It is a housing that holds 2) and is installed in an aircraft.

Next, the operation will be described. The infrared rays emitted from the object to be measured pass through the infrared transmission window (1) and the infrared detector (2
It is detected in 1) and converted into an electrical signal. By converting this electric signal into an infrared radiation amount by the electronic circuit (22), the infrared radiation amount emitted from the measurement object is measured.

[Problems to be solved by the device]

Since the conventional infrared measuring device is configured as described above, it is an infrared detecting device when mounted on an aircraft flying at high speed.
It is necessary to track with an aircraft so that the measurement object enters within the field of view of (21), and to enter in a certain direction,
Further, both the infrared camera for imaging with infrared rays and the infrared analyzer for measuring the spectrum of infrared rays cannot be used at the same time as the infrared detecting device, and it is necessary to replace them for measurement.

This invention has been made to solve the above problems, and it is possible to accurately track an object to be measured, and to equip both an infrared camera for imaging with infrared rays and an infrared analyzer for measuring infrared spectrum. , The purpose is to obtain an infrared measurement mounting device capable of simultaneous measurement.

[Means for Solving the Problems]

An infrared measuring mount device according to the present invention is provided with four mirrors between an infrared transmitting window and an infrared detecting device (an infrared camera and an infrared analyzer), and two of these mirrors are driven around two axes. In addition, one of the remaining two pieces is a half mirror.

[Action]

In the infrared measuring mount device according to the present invention, the incident infrared light from the infrared transmitting window is reflected by a biaxial scanning mirror capable of biaxial rotation and is further reflected by a folding mirror fixed to the housing to be incident on a half mirror. , Half transparent,
The other half is reflected, the reflected light is reflected by a biaxial point scanning mirror that can be driven to rotate in two axes, and one of the reflected infrared light and the transmitted infrared light is made incident on an infrared camera and the other is made incident on an infrared analyzer. It is equipped with both an infrared camera and an infrared analyzer, and measurement by these can be performed simultaneously.

[Example of device]

An embodiment of the present invention will be described below with reference to the drawings. In Figs. 1 and 2, (1) is an infrared transmitting window for transmitting infrared rays, and (6) is a rotation about two axes supported by bearings (10a) and (10b) by drive mechanisms (11a) and (11b). 2-axis scanning mirror, (7) is a folding mirror that reflects infrared rays, and (8) is an infrared ray mirror.
Half mirror that reflects 50% and transmits 50%, (9) is supported by bearings (10c) and (10d) as well as the biaxial scanning mirror (6),
A two-axis point scanning mirror driven by two drive mechanisms (11c) and (11d) ((10d) and (11d) are not shown), (10
a), (10b), (10c) are bearings, (11a), (11b), (11c)
Is a drive mechanism, (2) is a two-axis scanning mirror that transmits through the infrared transmission window (1)
(6) and an infrared camera that captures the infrared light reflected by the folding mirror (7) and transmitted through the half mirror (8), and (4) is an infrared camera that processes the electrical signal of the infrared light detected by the infrared camera (2). An electronic circuit for a camera, (3) an infrared analyzer for spectrally measuring infrared rays reflected by a half mirror (8) and reflected by a biaxial point scanning mirror (9), and (5) detected by an infrared analyzer ₃ . An infrared analyzer electronic circuit for processing the generated electric signal, (12) is a housing that supports and holds the above components.

Next, the operation will be described.

When measuring the amount of infrared radiation emitted from the object to be measured, the spectrum, etc., the half mirror (8) is transmitted through the infrared transmission window (1) and reflected by the biaxial scanning mirror (6) and the folding mirror (7). The infrared rays that have passed through are detected by the infrared camera (2) and processed by the infrared camera electronic circuit (4). At this time, the deviation between the centroid of the image projected in the field of view of the infrared camera (2) and the center of the field of view is also detected, and this deviation amount (angle error) is detected.
By driving the biaxial scanning mirror (6) by a), the infrared camera (2) is controlled so as to always face the object to be measured. On the other hand, about 50% of the infrared rays emitted from the object to be measured is reflected by the half mirror (8), passes through the biaxial point scanning mirror (9), and is detected by the infrared analyzer (3). However, by driving the biaxial point scanning mirror (9) around the biaxial axis, it is possible to measure the infrared spectrum of an arbitrary point of the measuring object displayed in the visual field of the infrared camera (2).

In the above embodiment, the method of driving the two mirrors around two axes is shown, but as in the other embodiment shown in (3), the whole mirror is further rotated around another axis (or two axes). To drive. That is, the range in the infrared measurement direction may be widened by driving the entire structure by the slewing wheel bearing 13 and the drive mechanism 14.

Further, in the embodiment shown in FIGS. 1 and 2, the centers of the four mirrors are arranged in the same plane, but as in the other embodiments shown in FIGS. There is no problem even if it is not placed.

[Effect of device]

As described above, according to the present invention, four mirrors are used, and two of these mirrors are driven around two axes, so that the object to be measured is accurately detected in a constant state and infrared detection is performed. As an instrument, an infrared camera and an infrared analyzer can be effectively used, and there is an effect that the infrared characteristic of the measurement object can be measured easily, accurately and quickly (at one time).

[Brief description of drawings]

FIG. 1 is a sectional side view showing an infrared measuring mount device according to an embodiment of the present invention, FIG. 2 is a sectional front view of a biaxial scanning mirror (6), and FIGS. FIG. 5 is a sectional side view showing an infrared measuring mount device according to another embodiment and still another embodiment, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a sectional view showing a conventional infrared measuring mount device. It is a side view. (1) infrared transmission window, (2) infrared camera, (3) infrared analyzer, (4) infrared camera electronic circuit, (5) infrared analyzer electronic circuit, (6) two-axis scanning Mirror, (7) is a folding mirror,
(8) is a half mirror, (9) is a biaxial point scanning mirror, and (12) is a housing. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] 1. An infrared transmissive window fixed to a housing, a biaxial scanning mirror which can be rotatably driven by two axes for reflecting infrared rays that have passed through the infrared transmissive window, and the biaxial scanning mirror fixed to the housing. A folding mirror that further reflects the infrared light reflected by the scanning mirror, and 50% of the infrared light reflected by this folding mirror is transmitted,
A half mirror that reflects the remaining 50%, a biaxial point scanning mirror that can be rotationally driven in two axes that further reflects the infrared light reflected by this half mirror, a path of the infrared light that has passed through the half mirror, and the above 2
An infrared measuring mount device comprising an infrared camera provided in either one of the paths of infrared rays reflected by an axial point scanning mirror, and an infrared analyzer provided in the other.