JP2006084214A - Infrared detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent visible light exciting an infrared stimulable phosphore from reaching a domain of an infrared detection part where the infrared stimulable phosphore generates the visible light by being irradiated with infrared light from an optical fiber cable. <P>SOLUTION: A hand case type infrared detector is constituted of an infrared detection part having a rotationally-movable truncated cone-shaped member 4A and the infrared stimulable phosphore 5 provided on its surface, a light source 2 for excitation for irradiating the infrared stimulable phosphore 5 with excitation light of the visible light on the first position, an optical fiber storage part 3 for irradiating the infrared stimulable phosphore 5 with the infrared light from the optical fiber cable on the second position, and a hand case 1 for storing them. The visible light generated from the infrared stimulable phosphore 5 by irradiation of the infrared light from the optical fiber cable is observed visually from an observation window of the hand case 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to an infrared detector for confirming whether or not an infrared optical signal is propagating through an optical fiber, and more particularly to a handcase type infrared detector using an infrared stimulable phosphor.

Japanese Patent Application Laid-Open No. 5-52648 (Patent Document 1) discloses an infrared observation apparatus including an objective lens, an image intensifier, and an eyepiece, and includes calcium fluoride and strontium fluoride on the objective lens resolution surface. Alternatively, an infrared observation apparatus in which an infrared photostimulable phosphor layer is formed on a barium fluoride substrate is disclosed.

Japanese Patent Application Laid-Open No. 5-87632 (Patent Document 2) discloses an infrared transmitting member that blocks ultraviolet rays and visible rays and transmits infrared rays, a light shielding member that blocks ultraviolet rays, visible rays, and infrared rays, and infrared brightening. An infrared detector having a phosphor and holding the infrared photostimulable phosphor sandwiched between the infrared transmitting member and the light shielding member is disclosed.

Japanese Patent Application Laid-Open No. 7-260565 (Patent Document 3) discloses an infrared-visible conversion such as an infrared-stimulated phosphor at one end of a solid support that transmits visible light and absorbs infrared light. An infrared detector characterized by having an infrared detector body provided with an infrared-visible conversion portion made of a phosphor is disclosed.

Japanese Patent Application Laid-Open No. 11-287709 (Patent Document 4) discloses a card-type infrared detector using an infrared stimulable phosphor as an infrared light detector. Including this card type infrared detector, these infrared detectors are all infrared detectors that are inexpensive, have high sensitivity, and can easily detect infrared rays.

By the way, for the past several years, high-speed, always-on connection lines using optical fibers have been spread to ordinary homes. The optical fiber cable network is configured with a connection box called a closure as a connection part. However, maintenance and inspection of a high-speed / always-connected line necessarily involves connection and disconnection of the optical fiber cable in the closure. Since the closure is installed in the basement of a utility pole or building, maintenance and inspection work is performed in a relatively bad environment.

For this reason, the above-mentioned conventional infrared detector cannot be used or is difficult to use for maintenance / inspection work of an optical fiber cable performed in a relatively bad environment. Since ambient light is strong on the utility pole and outdoors, it is difficult to visually observe the visible light emitted from the infrared stimulable phosphor of the infrared detector. Since it is relatively dark indoors such as in the basement of a building, sufficient excitation light necessary to excite the infrared stimulable phosphor of the infrared detector cannot be obtained. Therefore, also in this case, the visible light emitted from the infrared photostimulable phosphor is weak and is difficult to visually check for confirmation.

Therefore, in view of the above-described conventional problems, the applicant of the present application is a hand-case type infrared detection using an infrared stimulable phosphor that visually observes infrared light of an optical fiber cable by light emission of the infrared stimulable phosphor. An infrared detector comprising an excitation light source for irradiating the infrared stimulable phosphor with excitation light was developed, and a patent application was filed for this (Japanese Patent Application No. 2004-132411).

The hand case type infrared detector using the above-mentioned infrared stimulable phosphor irradiates the infrared stimulable phosphor with excitation light in order to stably visually confirm infrared detection visible light, It is a practical device because of its simple structure. However, it has been found that when visible excitation light is used, visible light of the infrared photostimulable phosphor generated by irradiation with infrared light becomes inconspicuous, and visual confirmation of infrared detection light may be difficult. did.

JP-A-5-52648 JP-A-5-87632 JP-A-7-260565 JP 11-287709 A Japanese Patent Application No. 2004-132411

  The problem to be solved by the present invention is that, in a handcase type infrared detector using an infrared stimulable phosphor, the infrared stimulable phosphor generates visible light when irradiated with infrared light from an optical fiber cable. It is to prevent the excitation light of visible light that excites the infrared photostimulable phosphor from reaching the region to be irradiated.

  An infrared detector that solves the above-described problems includes an infrared detector having a movable body movable from a first position to a second position and an infrared stimulable phosphor provided on a surface of the movable body; An excitation light source for irradiating the infrared stimulable phosphor with visible excitation light at one position and an optical fiber housing for irradiating the infrared stimulable phosphor with infrared light from an optical fiber cable at the second position And a hand case with an observation window for accommodating them.

According to the present invention, in the hand case type infrared detector using the infrared stimulable phosphor, the red light is emitted from the optical fiber cable in the region where the infrared stimulable phosphor generates visible light. It was possible to prevent the excitation light of visible light that excites the external stimulable phosphor from reaching. Therefore, the worker will only observe the visible light generated in the infrared photostimulable phosphor when the infrared light of the optical fiber cable is irradiated, and the infrared light can be visually observed by the hand case type infrared detector. Even more reliably.

  An infrared detector according to the present invention includes an infrared detector having a movable body movable from a first position to a second position and an infrared photostimulable phosphor provided on a surface of the movable body, and the first position. An excitation light source for irradiating the infrared stimulable phosphor with excitation light, an optical fiber housing for irradiating the infrared stimulable phosphor with infrared light from the optical fiber cable at the second position, and It is a hand case to be accommodated, and includes a hand case provided with an observation window for visually observing visible light. The excitation light source and the optical fiber housing portion are disposed on opposing wall surfaces of the hand case, and the infrared detection unit is disposed between the excitation light source and the optical fiber housing portion.

  In the first embodiment of the present invention, as shown in the sectional view (A), plan view (B) of FIG. 1, and the schematic configuration diagram and the operation explanatory diagram of FIG. 3, the truncated cone member 4A and the red provided on the surface thereof are shown. Infrared detector having outer stimulable phosphor 5, excitation light source 2 for irradiating infrared stimulable phosphor 5 with excitation light, and infrared stimulable phosphor 5 irradiated with infrared light from an optical fiber cable It is an infrared detector comprised by the optical fiber accommodating part 3 to perform, and the hand case 1 which accommodates these.

  The truncated cone member 4 </ b> A is a rotary moving body that is rotationally driven by a driving unit 6 such as a motor fixed in the hand case 1, and is disposed between the optical fiber housing unit 3 and the excitation light source 2. The optical fiber accommodating portion 3 is disposed so as to penetrate one side wall of the hand case 1, and the excitation light source 2 is disposed on the inner side of the opposite side wall.

The infrared photostimulable phosphor 5 is in the form of a sheet, and is provided on the inclined surface of the truncated cone member 4A by being attached to the entire circumference. Alternatively, the infrared photostimulable phosphor 5 can be provided over the entire circumference of the inclined surface of the truncated cone member 4A by molding the truncated cone member 4A by mixing an infrared photostimulable fluorescent material with a plastic material.

An observation window 7 for visually observing visible light from the infrared stimulable phosphor 5 is formed on the cover plate of the hand case 1. The angle between the line connecting the observation window 7 and the infrared photostimulable phosphor 5 on the inclined surface of the truncated cone member 4A and the inclined surface of the truncated cone member 4A is such that the infrared light of the optical fiber cable is transmitted to the optical fiber housing 3. It is the same as the incident angle irradiated from. Therefore, when the inclined surface of the truncated cone member 4A is set to 45 degrees, the observation window 7 is formed on the cover plate of the hand case 1 so as to be directly above the inclined surface of the truncated cone member 4A that is a rotationally movable body. In other words, the observation window 7 is provided in the hand case 1 in accordance with the reflection direction of the infrared light of the optical fiber cable incident from the optical fiber housing 3 with respect to the inclined surface of the truncated cone member 4A.

  The excitation light source 2 that irradiates the excitation light includes a visible light lamp 2a such as a light emitting diode that emits white or blue visible light, and a lamp driving circuit 2b including a built-in power source. The lamp driving circuit 2b is a discontinuous driving circuit that discontinuously drives the visible light lamp 2a. Further, the excitation light source 2 is provided with a shield 2c for preventing diffusion of visible light from the visible light lamp 2a. The shield 2c is a visible light blocking plate or a tubular shielding member that covers the periphery of the visible light lamp 2a.

  The optical fiber housing 3 is a cylindrical body that houses the strands of the optical fiber cable. Or the optical fiber accommodating part 3 is an adapter-like structure which accommodates the connector of an optical fiber cable.

In FIG. 3, the region on the right side of the infrared photostimulable phosphor 5 provided on the inclined surface of the truncated cone member 4A is irradiated with excitation light from the visible light lamp 2a. The region on the right side of the infrared photostimulable phosphor 5 is a state where the infrared photostimulable phosphor 5 of the moving body in the present invention is in the first position.

At the same time, the left region of the infrared photostimulable phosphor 5 provided on the inclined surface of the truncated cone member 4 </ b> A is irradiated with infrared light from the optical fiber cable via the optical fiber housing 3. The left region of the infrared photostimulable phosphor 5 is in a state where the infrared photostimulable phosphor 5 of the moving body in the present invention is in the second position.

The region on the left side of the infrared photostimulable phosphor 5 of the truncated cone member 4A irradiated by the infrared light to be detected, that is, the infrared light detection region is before the truncated cone member 4A rotates 180 degrees. Excited light is irradiated from the visible light lamp 2a of the excitation light source 2 to be excited. In other words, this region was in the first position described above before the truncated cone member 4A rotated 180 degrees. Therefore, when the infrared light of the optical fiber cable is irradiated to the region via the optical fiber housing 3, the infrared stimulable phosphor 5 generates visible light. The visible light of the infrared photostimulable phosphor 5, that is, the infrared detection light, can be surely viewed by an operator from the observation window 7 provided on the cover plate of the hand case 1.

The visible light of the visible light lamp 2a does not reach the infrared light detection region because the inclined surface of the truncated cone member 4A, which is a rotating moving body, serves as a shielding wall. For this reason, the infrared detection light is not disturbed by the excitation light of the visible light, and the operator can surely see the infrared detection light from the observation window 7.

As described above, in Example 1, the infrared stimulable phosphor 5 is provided on the entire inclined surface of the truncated cone member 4A. However, the infrared stimulated phosphor 5 is 1 on the inclined surface of the truncated cone member 4A. Only a location may be provided. Alternatively, a pair of infrared stimulable phosphors 5 (two places) or a plurality of pairs (four places, six places, eight places, etc.) may be provided symmetrically on the inclined surface of the truncated cone member 4A.

  The second embodiment of the present invention is provided on the thick disk member 4B and the surface thereof as shown in the cross-sectional view (A), plan view (B) of FIG. 2, the schematic configuration diagram of FIG. An infrared detection unit having the infrared photostimulable phosphor 5, an excitation light source 2 for irradiating the infrared photostimulable phosphor 5 with excitation light, and infrared light of an optical fiber cable on the infrared photostimulable phosphor 5. It is an infrared detector comprised by the optical fiber accommodating part 3 which irradiates, and the hand case 1 which accommodates these.

  The thick disk member 4B is a rotary moving body that is rotationally driven by a drive unit 6 such as a motor fixed in the hand case 1, and is disposed between the optical fiber housing unit 3 and the excitation light source 2. Yes. The optical fiber accommodating portion 3 is disposed so as to penetrate one side wall of the hand case 1, and the excitation light source 2 is disposed on the inner side of the opposite side wall.

The infrared photostimulable phosphor 5 is in the form of a sheet and is provided on the outer peripheral surface of the thick disk member 4B by being attached to the entire periphery. Alternatively, the infrared photostimulable phosphor 5 is provided over the entire circumference on the outer peripheral surface of the thick disc member 4B by molding the thick disc member 4B by mixing an infrared stimulable fluorescent material with a plastic material. Can do.

An observation window 7 for visually observing visible light from the infrared stimulable phosphor 5 is formed on the cover plate of the hand case 1. A condensing optical fiber 8 extending to the vicinity of the infrared light detection region is attached to the observation window 7.

  The excitation light source 2 that irradiates the excitation light includes a visible light lamp 2a such as a light emitting diode that emits white or blue visible light, and a lamp driving circuit 2b including a built-in power source. The lamp driving circuit 2b is a discontinuous driving circuit that discontinuously drives the visible light lamp 2a. Further, the excitation light source 2 is provided with a shield 2c for preventing diffusion of visible light from the visible light lamp 2a. The shield 2c is a visible light blocking filter that covers the periphery of the visible light lamp 2a.

  The optical fiber housing 3 is a cylindrical body that houses the strands of the optical fiber cable. Or the optical fiber accommodating part 3 is an adapter-like structure which accommodates the connector of an optical fiber cable.

In FIG. 4, the region on the right side of the infrared photostimulable phosphor 5 provided on the outer peripheral surface of the thick disk member 4B is irradiated with excitation light from the visible light lamp 2a. The region on the right side of the infrared photostimulable phosphor 5 is a state where the infrared photostimulable phosphor 5 of the moving body in the present invention is in the first position.

At the same time, the left region of the infrared photostimulable phosphor 5 provided on the outer peripheral surface of the thick disk member 4B is irradiated with infrared light from the optical fiber cable through the optical fiber housing portion 3. The left region of the infrared photostimulable phosphor 5 is in a state where the infrared photostimulable phosphor 5 of the moving body in the present invention is in the second position.

The area on the left side of the infrared stimulable phosphor 5 of the thick disk member 4B irradiated by the infrared light to be detected, that is, the infrared light detection area, the thick disk member 4B rotates 180 degrees. Before being excited, the excitation light is irradiated from the visible light lamp 2a of the excitation light source 2 to be excited. In other words, this region was in the first position described above before the outer peripheral surface of the thick disc member 4B was rotated 180 degrees. Therefore, when the infrared light of the optical fiber cable is irradiated to the region via the optical fiber housing 3, the infrared stimulable phosphor 5 generates visible light. The visible light, that is, the infrared detection light of the infrared photostimulable phosphor 5 is surely received by the operator from the observation window 7 provided on the cover plate of the handcase 1 through the condensing optical fiber 8. Visible.

The visible light from the visible light lamp 2a does not reach the infrared light detection region because the outer peripheral surface of the thick disk member 4B, which is a rotary moving body, serves as a shielding wall. For this reason, the infrared detection light is not obstructed by the excitation light of visible light, and the operator can surely see the infrared detection light from the observation window 7 through the condensing optical fiber 8.

As described above, in Example 2, the infrared stimulable phosphor 5 is provided on the entire outer peripheral surface of the thick disc member 4B, but the infrared stimulable phosphor 5 is formed of the thick disc member 4B. You may provide only one place on an outer peripheral surface. Alternatively, a pair of infrared stimulable phosphors 5 (two places) or a plurality of pairs (four places, six places, eight places, etc.) may be provided symmetrically on the outer peripheral surface of the thick disk member 4B.

  The third embodiment of the present invention has an isosceles cross section as shown in the schematic configuration diagram and the operation explanatory diagram of the cross sectional view (A), the plan view (B), the cross sectional view (C), and the plan view (D) of FIG. An infrared detector characterized in that the trapezoidal member 4C is a rotationally movable body, and infrared stimulating phosphors 5a and 5b are provided at two symmetrical locations on the inclined surface of the isosceles trapezoidal member 4C in cross section. It is a detector.

  The isosceles trapezoidal member 4C is a rotary moving body driven by a driving unit 6 such as a motor fixed in the hand case 1, and is disposed between the optical fiber housing unit 3 and the visible light lamp 2a for excitation. Has been. The optical fiber housing portion 3 is disposed so as to penetrate one side wall of the hand case 1, and the visible light lamp 2 a is disposed inside the opposite side wall.

The infrared photostimulable phosphors 5a and 5b are in the form of a sheet and are provided on the entire surface of the pair of inclined surfaces of the isosceles trapezoidal member 4C. Alternatively, the infrared photostimulable phosphors 5a and 5b are entirely formed on a pair of inclined surfaces of the isosceles trapezoidal member 4C in cross section by mixing the plastic material with the infrared stimulable fluorescent material and forming the isosceles trapezoidal member 4C in cross section. Can be provided.

An observation window 7 for visually observing visible light from the infrared photostimulable phosphors 5 a and 5 b is formed on the cover plate of the hand case 1.

5A and 5B, the infrared photostimulable phosphor 5a provided on the right inclined surface of the isosceles trapezoidal member 4C in cross section is irradiated with excitation light from the visible light lamp 2a. The infrared photostimulable phosphor 5a is a state in which the infrared photostimulable phosphor of the moving body in the present invention is in the first position.

At the same time, the infrared photostimulable phosphor 5 b provided on the left inclined surface of the isosceles trapezoidal member 4 </ b> C is irradiated with infrared light from the optical fiber cable through the optical fiber housing 3. The infrared photostimulable phosphor 5b is a state in which the infrared photostimulable phosphor 5 of the moving body in the present invention is in the second position.

The infrared photostimulable phosphor 5b of the isosceles trapezoidal member 4C that is irradiated with the infrared light to be detected, that is, the infrared light detection region is rotated before the cross-section isosceles trapezoidal member 4C is rotated 180 degrees. The excitation light source 2 is excited by being irradiated with excitation light from the visible light lamp 2a. In other words, before the cross-section isosceles trapezoidal member 4C rotates 180 degrees, as shown in FIGS. 4C and 4D, the infrared photostimulable phosphor 5b was in the first position described above. Accordingly, when the infrared photostimulable phosphor 5b is irradiated with the infrared light of the optical fiber cable via the optical fiber housing 3, the infrared photostimulable phosphor 5b generates visible light. The visible light of the infrared photostimulable phosphor 5b, that is, the infrared detection light, can be surely viewed by an operator through the observation window 7 provided on the cover plate of the hand case 1.

The visible light from the visible light lamp 2a does not reach the infrared photostimulable phosphor 5b because the inclined surface of the isosceles trapezoidal member 4C, which is a rotary moving body, serves as a shielding wall. For this reason, the infrared detection light is not disturbed by the excitation light of the visible light, and the operator can surely see the infrared detection light from the observation window 7.

Next, FIGS. 5C and 5D show a state in which the isosceles trapezoidal member 4C having a cross section is rotated 180 degrees from the positions of FIGS. 5A and 5B. Therefore, the infrared photostimulable phosphor 5b provided on the right inclined surface of the isosceles trapezoidal member 4C is irradiated with the excitation light from the visible light lamp 2a. The infrared photostimulable phosphor 5b is a state where the infrared photostimulable phosphor of the moving body in the present invention is in the first position.

At the same time, the infrared photostimulable phosphor 5 a provided on the left inclined surface of the isosceles trapezoidal member 4 </ b> C is irradiated with infrared light from the optical fiber cable through the optical fiber housing 3. The infrared photostimulable phosphor 5a is a state in which the infrared photostimulable phosphor of the moving body in the present invention is in the second position.

The infrared photostimulable phosphor 5a of the isosceles trapezoidal member 4C that is irradiated with the infrared light to be detected, that is, the infrared light detection region, before the cross-section isosceles trapezoidal member 4C rotates 180 degrees, The excitation light source 2 is excited by being irradiated with excitation light from the visible light lamp 2a. In other words, before the cross-section isosceles trapezoidal member 4C rotates 180 degrees, the infrared photostimulable phosphor 5a was in the first position as shown in FIGS. 4 (A) and 4 (B). Accordingly, when the infrared photostimulable phosphor 5a is irradiated with the infrared light of the optical fiber cable via the optical fiber housing 3, the infrared photostimulable phosphor 5a generates visible light. The visible light of the infrared photostimulable phosphor 5 a, that is, infrared detection light, can be surely viewed by an operator from the observation window 7 provided on the cover plate of the hand case 1.

The visible light from the visible light lamp 2a does not reach the infrared photostimulable phosphor 5a because the inclined surface of the isosceles trapezoidal member 4C, which is a rotary moving body, serves as a shielding wall. For this reason, the infrared detection light is not disturbed by the excitation light of the visible light, and the operator can surely see the infrared detection light from the observation window 7.

  The third embodiment of the present invention has an inclined surface as shown in the schematic configuration diagram and the operation explanatory diagram in the cross-sectional view (A), the plan view (B), the cross-sectional view (C), and the plan view (D) in FIG. The L-shaped member 4D, which is a L-shaped member having a pair of formed leg portions and is driven by a pendulum, is a moving body, and the infrared photostimulable phosphors 5a and 5b are a pair of leg portions of the L-shaped member 4D. Infrared detectors characterized in that infrared detectors are provided on the respective inclined surfaces.

  The isosceles trapezoidal member 4 </ b> C is a member that is pendulum driven by a driving unit 6 such as a motor fixed in the hand case 1.

The pair of visible light lamps 2 </ b> Aa and 2 </ b> Ba are respectively disposed inside the opposing side walls of the handcase 1. The optical fiber housing 3 is disposed through one side wall of the hand case 1 parallel to the optical axes of the pair of visible light lamps 2Aa and 2Ba.

The infrared photostimulable phosphor 5 is in the form of a sheet, and is provided on the entire inclined surface of each of the pair of leg portions of the L-shaped member 4D. Alternatively, the L-shaped member 4D can be provided with the infrared-stimulated phosphors 5a and 5b by mixing an infrared-stimulated fluorescent material with a plastic material to form the L-shaped member 4D.

An observation window 7 for visually observing visible light from the infrared photostimulable phosphors 5 a and 5 b is formed on the cover plate of the hand case 1.

6A and 6B, the infrared photostimulable phosphor 5a provided on the inclined surface of the first leg portion of the L-shaped member 4D is irradiated with excitation light from the visible light lamp 2Aa. . The infrared photostimulable phosphor 5a is a state in which the infrared photostimulable phosphor of the moving body in the present invention is in the first position.

At the same time, the infrared photostimulable phosphor 5 b provided on the inclined surface of the first leg portion of the L-shaped member 4 </ b> D is irradiated with the infrared light of the optical fiber cable through the optical fiber housing portion 3. The infrared photostimulable phosphor 5b is a state in which the infrared photostimulable phosphor 5 of the moving body in the present invention is in the second position.

The infrared photostimulable phosphor 5b of the L-shaped member 4D irradiated with the infrared light to be detected, that is, the infrared light detection region is before the L-shaped member 4D rotates clockwise by 90 degrees. In addition, the excitation light source 2 is excited by being irradiated with excitation light from the visible light lamp 2Ba. In other words, before the L-shaped member 4D is rotated by 90 degrees, as shown in FIGS. 6C and 6D, the infrared photostimulable phosphor 5b is in the first position described above. Accordingly, when the infrared photostimulable phosphor 5b is irradiated with the infrared light of the optical fiber cable via the optical fiber housing 3, the infrared photostimulable phosphor 5b generates visible light. The visible light of the infrared photostimulable phosphor 5b, that is, the infrared detection light, can be surely viewed by an operator through the observation window 7 provided on the cover plate of the hand case 1.

The visible light from the visible light lamp 2Aa does not reach the infrared photostimulable phosphor 5b because the inclined surface of the L-shaped member 4D as a moving body serves as a shielding wall. For this reason, the infrared detection light is not disturbed by the excitation light of the visible light, and the operator can surely see the infrared detection light from the observation window 7.

Next, FIGS. 6C and 6D show a state in which the L-shaped member 4D is rotated counterclockwise by 90 degrees from the position of FIGS. 6A and 6B. Therefore, the infrared photostimulable phosphor 5b provided on the inclined surface of the second leg portion of the L-shaped member 4D is irradiated with excitation light from the visible light lamp 2Ba. The infrared photostimulable phosphor 5b is a state where the infrared photostimulable phosphor of the moving body in the present invention is in the first position.

At the same time, the infrared photostimulable phosphor 5 a provided on the inclined surface of the first leg of the L-shaped member 4 </ b> D is irradiated with infrared light from the optical fiber cable via the optical fiber housing 3. The infrared photostimulable phosphor 5a is a state in which the infrared photostimulable phosphor of the moving body in the present invention is in the second position.

The infrared stimulable phosphor 5a of the first leg irradiated with the infrared light to be detected, that is, the infrared light detection region is before the L-shaped member 4D rotates counterclockwise by 90 degrees. Furthermore, it is in an excited state by being irradiated with excitation light from the visible light lamp 2Aa. In other words, before the L-shaped member 4D is rotated 90 degrees, the infrared photostimulable phosphor 5a was in the first position as shown in FIGS. Accordingly, when the infrared photostimulable phosphor 5a is irradiated with the infrared light of the optical fiber cable via the optical fiber housing 3, the infrared photostimulable phosphor 5a generates visible light. The visible light of the infrared photostimulable phosphor 5 a, that is, infrared detection light, can be surely viewed by an operator from the observation window 7 provided on the cover plate of the hand case 1.

The visible light from the visible light lamp 2Ba does not reach the infrared photostimulable phosphor 5a because the inclined surface of the L-shaped member 4D, which is a moving body, serves as a shielding wall. For this reason, the infrared detection light is not disturbed by the excitation light of the visible light, and the operator can surely see the infrared detection light from the observation window 7.

  The fifth embodiment of the present invention is an L-shaped member having a pair of legs formed with inclined surfaces in the above-described fourth embodiment, and an L-shaped member 4D that is driven by a pendulum is replaced with a moving body. An L-shaped member having a pair of legs without an inclined surface and driven by a pendulum is used as a moving body. The infrared photostimulable phosphors 5a and 5b are provided on the end surfaces of the pair of legs of the L-shaped member. It is an infrared detector characterized by having the infrared detection part comprised in this way.

An observation window 7 for visually observing visible light from the infrared photostimulable phosphors 5 a and 5 b is formed on the cover plate of the hand case 1. A condensing optical fiber 8 extending to the vicinity of the infrared light detection region is attached to the observation window 7.

In the infrared detector according to the fifth embodiment, the visible light of the visible light lamp 2Aa is an infrared stimulable phosphor in which an inclined surface of an L-shaped member as a moving body serves as a shielding wall and is irradiated with infrared light. Do not reach 5b. The visible light from the visible light lamp 2Ba does not reach the infrared photostimulable phosphor 5a because the inclined surface of the L-shaped member as a moving body serves as a shielding wall. For this reason, the infrared detection light is not disturbed by the excitation light of the visible light, and the operator can surely see the infrared detection light from the observation window 7.

  The sixth embodiment of the present invention is an L-shaped member having a pair of leg portions formed with inclined surfaces in the above-described fourth embodiment, and the L-shaped member 4D that is driven by a pendulum is replaced by a moving body. A quarter truncated cone member driven by a pendulum and a member driven by a pendulum are used as a moving body. The infrared photostimulable phosphors 5a and 5b are provided at two positions symmetrical to the inclined surface of the quarter truncated cone member. It is an infrared detector characterized by having the infrared detection part comprised in this way.

In the infrared detector of the sixth embodiment, an observation window 7 for visually observing visible light from the infrared photostimulable phosphors 5 a and 5 b is formed on the cover plate of the hand case 1. A condensing optical fiber 8 extending to the vicinity of the infrared light detection region is attached to the observation window 7.

In the infrared detector according to the sixth embodiment, the visible light from the visible light lamp 2Aa is irradiated with infrared light with the inclined surface of the quarter-conical truncated cone member as a moving body serving as a shielding wall. It does not reach the exhaust phosphor 5b. The visible light from the visible light lamp 2Ba does not reach the infrared photostimulable phosphor 5a because the inclined surface of the quarter-conical truncated cone member as a moving body serves as a shielding wall. For this reason, the infrared detection light is not disturbed by the excitation light of the visible light, and the operator can surely see the infrared detection light from the observation window 7.

It is sectional drawing (A) and top view (B) of the infrared detector of Example 1 of this invention. It is sectional drawing (A) and the top view (B) of the infrared detector of Example 2 of this invention. It is the typical block diagram and operation | movement explanatory drawing of the infrared detector of Example 1 of this invention. It is a typical block diagram and operation | movement explanatory drawing of the infrared detector of Example 3 of this invention. It is a typical block diagram and operation | movement explanatory drawing of the infrared detector of Example 4 of this invention. It is a typical block diagram and operation | movement explanatory drawing of the infrared detector of Example 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hand case 2 Excitation light source 2a, 2Aa, 2Ba Visible light lamp 2b Lamp drive circuit 2c, 2Ac, 2Bc Shield 3 Optical fiber accommodating part 4A Frustum member 4B Thick disk member 4C Sectional isosceles trapezoid member 4D L-shaped Members 5, 5a, 5b Infrared stimulable phosphor 6 Drive unit 7 Observation window 8 Optical fiber for condensing

Claims (14)

An infrared detector having a movable body movable from the first position to the second position and an infrared stimulable phosphor provided on a surface of the movable body; and the infrared stimulable phosphor in the first position. An excitation light source for irradiating visible excitation light, an optical fiber accommodating portion for irradiating the infrared stimulable phosphor with infrared light of an optical fiber cable at the second position, and a hand with an observation window for accommodating these Infrared detector composed of a case. The movable body is a frustoconical member that is driven to rotate, the infrared stimulable phosphor is provided on the inclined surface of the truncated cone member, and the observation window is provided on the inclined surface. The infrared detector according to claim 1, wherein the hand case is provided in accordance with a reflection direction of infrared light incident thereon. The moving body is a frustoconical member that is driven to rotate, and the infrared stimulable phosphor is provided at only one place on the inclined surface of the frustoconical member, and the observation window is on the inclined surface. The infrared detector according to claim 1, wherein the hand case is provided in accordance with a reflection direction of infrared light incident thereon. The moving body is a truncated cone member that is driven to rotate, and the infrared stimulable phosphor is provided at least one pair symmetrically on the inclined surface of the truncated cone member, and the observation window is inclined. The infrared detector according to claim 1, wherein the hand case is provided in accordance with a reflection direction of infrared light incident on the surface. The movable body is an isosceles trapezoidal member that is driven to rotate, and the infrared stimulable phosphor is provided at two symmetrical positions on the inclined surface of the isosceles trapezoidal member; and The infrared detector according to claim 1, wherein the observation window is provided in the hand case in accordance with a reflection direction of infrared light incident on the inclined surface. 2. The infrared detection according to claim 1, wherein the movable body is a thick disk member that is driven to rotate, and the infrared photostimulable phosphor is provided on the outer peripheral surface of the disk member over the entire circumference. vessel. 2. The infrared detection according to claim 1, wherein the movable body is a thick disk member that is rotationally driven, and the infrared stimulable phosphor is provided at only one place on an outer peripheral surface of the disk member. vessel. The movable body is a thick disk member that is driven to rotate, and at least one pair of the infrared photostimulable phosphors are provided symmetrically on an outer peripheral surface of the disk member. Infrared detector. The movable body is a quarter truncated cone member that is driven by a pendulum, and the infrared photostimulable phosphor is provided at two positions symmetrical to the inclined surface of the quarter truncated cone member. The infrared detector according to claim 1, wherein the observation window is provided in the hand case in accordance with a reflection direction of infrared light incident on the inclined surface. The moving body is an L-shaped member having a pair of legs formed with inclined surfaces and is an L-shaped member driven by a pendulum, and the infrared photostimulable phosphor is a pair of the L-shaped member. And the observation window is provided in the hand case in accordance with a reflection direction of infrared light incident on the inclined surface. Item 1. An infrared detector according to item 1. The movable body is an L-shaped member having a pair of leg portions and is an L-shaped member driven by a pendulum, and the infrared photostimulable phosphor is disposed on end surfaces of the pair of leg portions of the L-shaped member. The infrared detector according to claim 1, wherein the infrared detector is provided. The infrared detector according to any one of claims 2, 3, 4, 5, 9, and 10, wherein the angle of the inclined surface of the movable body is 45 degrees. 12. The infrared ray according to claim 6, wherein a condensing optical fiber extending from the observation window to a position close to an infrared light emitting part of the moving body is disposed. Detector. The infrared detector according to claim 1, wherein the excitation light source is provided with a shield for preventing diffusion of the excitation light.

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