JP2005049206A - Collimator and infrared crime prevention device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collimator wherein a cost and a labor required for installation or inspection is reduced and an optical axis is easily confirmed, and excellent sighting accuracy and a wide sighting field is provided, and also to provide an infrared crime prevention device having excellent visibility of a sighting target in an optical axis confirmation work. <P>SOLUTION: In this collimator equipped with an ocular translucent part for peeping therefrom by an eye brought close thereto, an objective translucent part for allowing light from the direction wherein a sighting target is installed to enter therefrom, and a plane mirror for reflecting the light entering from the objective translucent part to the ocular translucent part, a peripheral region of the objective translucent part is constituted in the colored transparent state. Hereby, the collimator is realized, having heightened visibility of the center region compared with that of the peripheral region of the objective translucent part when peeping from the ocular translucent part, and capable of easy optical axis confirmation, while having a wide visual field for confirming the sighting target even in the colored translucent part. A part showing a color tone in a fluorescent color is provided on at least either of a floodlight and a photodetector constituting this infrared crime prevention device, to thereby improve visibility of the sighting target, and to facilitate the optical axis confirmation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an infrared crime prevention device that forms a detection line from a pair of projectors and light receivers, detects that an intruder has blocked the detection line, and outputs an alarm signal. The present invention relates to a sight for confirming the optical axis of the apparatus. The present invention also relates to an infrared crime prevention device that improves the visibility of a facing projector or light receiver when checking the optical axis.

  Infrared crime prevention devices that detect intruders have a detection line consisting of a pair of light projectors and light receivers installed around the buildings to be inspected to detect intruders, and the buildings to be inspected When an intruder tries to invade the building or the like when set to the entrance / exit, a part of the intruder's body crosses the detection line, so that the infrared light emitted from the projector does not enter the light receiver, The output detection signal changes. The change of the detection signal output from the light receiver is detected by the signal processing unit, so that the presence of an intruder can be detected.

  As described above, the infrared security device extends a detection line composed of a pair of light projectors and light receivers around a building to be guarded to detect an intruder, a building to be guarded, etc. Although it is set at the entrance / exit, the distance between the installation of the light projector and the light receiver may be a long distance of several hundred meters depending on the installation environment of the security target. As the distance between the two installations becomes longer, the optical axis between the projector and the receiver (hereinafter referred to as the detection optical axis) needs to be matched to ensure proper detection sensitivity. It becomes difficult. Therefore, in the conventional infrared security device, a sighting device as shown in FIG. 1 that facilitates confirmation of the detection optical axis is provided in the light receiver and the projector.

  As shown in FIG. 5, the conventional sighting device includes two translucent portions of an eyepiece translucent portion 11 and an objective translucent portion 12 and a plane mirror 16, and a counterpart (hereinafter, sighting) whose detection optical axes coincide with each other. The optical axis TR, which is an aiming axis that connects the direction T in which the opposing light receiver or projector exists, and the center point R on the plane mirror 16, may be parallel to the detection optical axis. Attached to the light receiver and the projector. Here, the aiming axis refers to an optical axis that is incident on the center of the objective light transmitting part 12 from the direction T in which the aiming target exists and is reflected by the flat mirror 16 and passes through the center of the eyepiece light transmitting part 11.

According to the conventional general technique, a round hole has been used for the eyepiece translucent part 11 and the objective translucent part 12. However, when the distance between the projector and the light receiver is long, the eyepiece translucent part is used. The image of the aiming target that can be visually recognized when looking through the light unit 11 is small, and it is difficult to determine whether the image of the aiming target is visually recognized on the aiming axis. Therefore, for example, as shown in FIG. 6, a protrusion from the periphery of the round hole toward the center or a radial notch from the center is formed on the light transmitting part of the eyepiece light transmitting part 11 or the objective light transmitting part 12. A proposed sighting device is provided in utility model registration No. 1396890, which is provided to clarify the center of the light-transmitting part and facilitate the aiming.
Utility model registration No. 1396890

  In the conventional sighting device shown in FIG. 5, when the eyepiece light transmitting part 11 and the objective light transmitting part 12 are configured by round holes, the field of view is widened and the presence of the aiming target can be easily recognized by increasing the hole diameter. However, the center position in the translucent part becomes ambiguous, and the aiming target is visually recognized at the center of the translucent part, so that it is difficult to determine that the aiming target is located on the aiming axis. Conversely, if the hole diameter is reduced, the accuracy of optical axis alignment is improved, but the field of view is narrowed, and if the aiming target is slightly off the aiming axis, the presence of the aiming target is confirmed in the field of view. It becomes impossible to do.

  In addition, as shown in FIG. 6, in the proposal of the sighting device in which the sighting marker for clarifying the center is provided in the eyepiece transmissive part 11 or the objective transmissive part 12 to facilitate the aiming, the aiming axis is to be confirmed. Since the distance from the eye of the installer to the eyepiece translucent part 11 or the objective translucent part 12 provided with the aiming marker is significantly different from the distance to the aiming target, the installer is not aware of which one is watching. Try to focus on. As a result, when the aiming target is watched, the light transmitting part provided with the aiming marker is in a defocused state, and a projection or notch for making the center of the light transmitting part easy to understand as shown in FIG. It was difficult to recognize clearly, and there was a problem that the effect as an aiming marker could not be fully achieved.

  Furthermore, the projector and the light receiver constituting the conventional infrared crime prevention device are composed of parts exhibiting a dark color tone so that the installation is not conspicuous for security reasons. However, there is a problem in that it is difficult to check the aiming target because the presence of the facing projector or light receiver is lost in the background.

  The present invention has been made in order to solve the above-described problems, and an sighting device capable of reducing the cost and labor required for installation and inspection, which is easy to check an optical axis, and a projector and a receiver having excellent visibility. And an infrared type crime prevention device.

  The sighting device of the present invention, which has been made to achieve the above object, includes an eyepiece translucent part that is viewed from close eyes, an objective translucent part that receives light from the direction of an opposing light receiver or projector, and the objective A planar mirror that reflects the light incident from the translucent part to the ocular translucent part, and the peripheral region of the objective translucent part is configured to be colored and transparent, so that when viewed from the ocular translucent part The visibility of the central region is set higher than the peripheral region of the objective light transmitting portion.

  Furthermore, the projector and the light receiver constituting the infrared security device of the present invention are characterized in that at least one of them is provided with a portion exhibiting a fluorescent color tone.

  According to the sighting device of the first aspect of the present invention, the peripheral region of the objective light transmitting portion is configured to be colored and transparent, and the visibility of the central region is set higher than the peripheral region. It is easy to confirm, and the presence of the aiming target can be visually recognized even in a colored and transparent peripheral region, and there is an advantage of having a wide aiming field.

  Further, according to the invention described in claim 2, visibility is improved by providing a portion exhibiting a fluorescent color tone on at least one of the light projector and the light receiver constituting the infrared security device, and the aiming target can be easily confirmed. It becomes.

  An infrared sighting device with high aiming accuracy, wide aiming field, and easy optical axis alignment is realized with a minimum number of parts and an easy-to-manufacture structure. Provided is an infrared security device configured. Hereinafter, the present invention will be described in detail with reference to the drawings.

  1 and 2 are schematic cross-sectional views showing an embodiment of an sighting device according to the present invention, and FIG. 3 is a front view showing an objective light transmitting portion of the sighting device in the present embodiment.

  As shown in FIGS. 1 and 2, the light TR that is incident on the center of the objective light transmission window 13 from the direction T in which the aiming target is installed and is parallel to the detection optical axis is reflected by the plane mirror 16 to transmit the eyepiece. Since it passes through the light part 11 and reaches the S direction, in order to confirm the detection optical axis of the infrared security device by the sighting device 10, the detection optical axis and the sighting axis of the sighting device 10 are always parallel. The sighting device 10 may be attached to the projector and the light receiver.

  Further, as shown in FIG. 1, the objective light transmitting portion 12 of the sighting device 10 includes an objective light transmitting window 13 and a peripheral region 15b that is colored and transparent and a central region 15a that is colorless and transparent, for example, as shown in FIG. When viewed from the eyepiece translucent part 11, the sighting marker 15 is configured so that the visibility of the central region 15a is set higher than that of the peripheral region 15b.

  In the present embodiment shown in FIG. 1, the aiming marker 15 is provided inside the objective light transmission window 13. However, the present invention is not limited to this. Moreover, as shown in FIG. 2, it is good also as a structure which inserts the aiming marker 15 in the objective light transmission window 12 of the aiming device 10. FIG.

  In the sighting device shown in FIG. 1 and FIG. 2, when looking at the aiming target far away from the eyepiece translucent part 11, the aiming is arranged at a significantly shorter distance than the distance from the eyepiece translucent part 11 to the aiming target. Since the marker 15 is in a defocused state and a clear image cannot be visually recognized, as shown in FIG. 6, in the conventional sighting device, the eyepiece translucent unit 11 or the objective is used to indicate the center of the sighting axis. It is difficult to confirm this with the aiming marker provided on the translucent part 12 by the protrusion from the periphery of the translucent window toward the center or the notch radially arranged from the center. According to the aiming marker 15 in the present embodiment shown in FIG. 2, the aiming target is visually recognized by the central part 15a having excellent visibility, or is visually recognized by the colored transparent peripheral part 15b. It is to determine whether it is easy. Even if the aiming target is off the aiming axis, the peripheral region 15b is colored and transparent, so the presence of the aiming target can be confirmed with a wide field of view.

  FIG. 4 is a perspective view showing the light receiver to which the sighting device 10 shown in the present embodiment is attached. The cover (not shown) covers the entire internal structure of the light receiver and is detachably attached to the light receiver body base 20. ) Indicates the removed state.

  As described above, FIG. 4 shows the light receiver. The detector of the light receiver includes an optical block composed of a light receiving element and an optical system unit for collecting light such as a lens, and a light receiving element. A light emitting element and an optical system unit for collecting light such as a lens, and a circuit block for controlling light emission of the light emitting element. It is composed of As described above, since the basic structures of the light receiver and the projector constituting the infrared crime prevention device are generally the same, the following description will be made based on the light receiver shown in FIG.

  Usually, in order to install an infrared security device, a base for mounting on a wall or pole so that the light emitter and the light receiver can be arranged at substantially the same height on opposite ends of the detection line. 40 is fixed, and the engaging portion (not shown) of the main body base 20 is engaged with the engaging portion (not shown) of the mounting base 40, and then both are connected by a lock screw 35 or the like.

  The detection unit including the optical unit 31 includes a detection block case 30 in which support shafts (not shown) provided at both ends are rotatably supported by bearings 25a and 25b protruding from the light receiver body base 20. The detection optical axis alignment in the left-right direction is adjusted by rotating the detection block case 30 and fine adjustment is performed by the left-right direction fine adjustment screw 33. As described above, the vertical alignment of the detection optical axis is performed by the vertical fine adjustment screw 32 because the opposing projector and light receiver are installed at substantially the same height.

  The sight 10 is integrally attached to a detection block case 30 in which a detection unit such as the optical unit 31 is housed so that the sight axis is always parallel to the detection optical axis of the light receiver. Since it can be adjusted in conjunction with the detection optical axis, the aiming target can be visually recognized in the central region of the aiming marker 15 provided in the objective light-transmitting window 12 while looking through the eyepiece light-transmitting part 11 of the aiming device 10. Then, the detection block case 30 is rotated to adjust the lateral direction, the eye is focused on the aiming marker while looking through the eyepiece translucent part 11 of the sight 10, and the lateral fine adjustment screw 33 is operated. Fine-tune the aiming axis. Also, in the vertical detection optical axis alignment, the eye is focused on the aiming marker while looking through the eyepiece translucent portion 11 of the sight 10 and the vertical fine adjustment screw 32 is operated to finely adjust the aiming axis. Do. Thereafter, if necessary, a tester probe or the like is inserted into the level monitor hole 26 provided in the light receiver, the output level of the light receiving amplifier circuit is measured, and the final coincidence state of the detection optical axes is confirmed.

  The colored transparent peripheral region 15b of the aiming marker 15 can be configured by: ■ molding using a colored transparent resin material; or ■ pasting a colored transparent film on, for example, a transparent resin plate or glass plate. Or, for example, a method of printing on a transparent resin plate or glass plate with colored transparent ink is suitable.

  Normally, confirmation and adjustment of the detection optical axis alignment of the infrared security device is performed with the cover removed, so that in the perspective view shown in FIG. 4, in the perspective view shown in FIG. For example, if the bearings 25a, 25b, the detection block case 30 and the like are formed using a fluorescent resin material so that the color tone of the fluorescent color is exhibited, a projector with good visibility as an aiming target and An infrared security device composed of a light receiver can be realized.

  In the perspective view shown in FIG. 4, the main body base 20 and, for example, the bearing portions 25a and 25b, the detection block case 30 and the like protruding or disposed on the main body base 20 exhibit a fluorescent color tone. The means for making is not limited to the above-described method, and it may be applied with a fluorescent paint or a fluorescent sticker may be attached. Further, if the main body base 20, the bearing portions 25a and 25b, the detection block case 30 and the like are formed using a resin material in which a phosphorescent fluorescent material is blended, a projector and a light receiver that have better visibility in a dark installation environment. Infrared crime prevention device composed of a container can be realized.

  The sighting device that has a wide aiming field, is easy to adjust the optical axis with high accuracy, and can be miniaturized with a simple configuration can be applied to a wide variety of infrared security devices. In addition, by providing a portion exhibiting a fluorescent color tone on at least one of the light projector and the light receiver constituting the infrared crime prevention device by a relatively easy means, the visibility of the aiming target at the time of optical axis confirmation work is improved. For example, according to the means for attaching a fluorescent color sticker, it can be applied to a conventional infrared security device without requiring any new processing.

It is a schematic sectional drawing which shows one Embodiment of the sighting device which concerns on this invention. Example 1 It is a schematic sectional drawing which shows the modification of Example 1 of the sighting device which concerns on this invention. It is a front view which shows the sighting device translucent part which concerns on this invention. It is a perspective view which shows the light receiver to which the sighting device of this invention was attached. It is a schematic sectional drawing which shows an example of the conventional sighting device. (A), (b) is a front view which shows an example of the aiming marker in the conventional aiming device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Sighting device 11 Eyepiece translucent part 12 Objective translucent part 13 Objective translucent window 15 Aiming marker 15a Aiming marker center area 15b Aiming marker peripheral area 16 Planar mirror 20 Main body base 25a, 25b Bearing part 26 Level monitor hole 30 Detection block case 31 Optical Unit 32 Vertical Fine Adjustment Screw 33 Horizontal Fine Adjustment Screw 35 Lock Screw 40 Mounting Base

Claims (2)

  An sighting device for confirming the optical axis between the light projector and the light receiver constituting the infrared crime prevention device, comprising an eyepiece light transmitting portion, an objective light transmitting portion, and a plane mirror, The peripheral region of the objective light transmitting portion is configured to be colored and transparent, and when viewed through the eyepiece light transmitting portion, the visibility of the central region is set higher than the peripheral region of the objective light transmitting portion. Sighting device for infrared security equipment.   An infrared type crime prevention apparatus, characterized in that at least one of a light projector and a light receiver constituting the infrared crime prevention apparatus is provided with a portion exhibiting a color tone of a fluorescent color.

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