WO2013111366A1 - 焦電型赤外線センサ - Google Patents
焦電型赤外線センサ Download PDFInfo
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- WO2013111366A1 WO2013111366A1 PCT/JP2012/067710 JP2012067710W WO2013111366A1 WO 2013111366 A1 WO2013111366 A1 WO 2013111366A1 JP 2012067710 W JP2012067710 W JP 2012067710W WO 2013111366 A1 WO2013111366 A1 WO 2013111366A1
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- pyroelectric
- infrared sensor
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- electrode
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/07—Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position
Definitions
- the present invention relates to a pyroelectric infrared sensor, and more particularly to a pyroelectric infrared sensor capable of obtaining a sufficient detection capability in a range of several meters.
- the pyroelectric infrared sensor is a kind of infrared sensor, and includes a pyroelectric element in which electrodes are installed on the front and back of a pyroelectric substrate as detection pixels.
- a surface charge due to spontaneous polarization exists on the surface of the pyroelectric substrate.
- the surface charge attracts surrounding floating charges, so that the surface charge of the pyroelectric substrate is kept in an electrically neutral state if the temperature around the pyroelectric substrate is constant.
- the state of spontaneous polarization in the pyroelectric substrate changes accordingly. Since the state change of the spontaneous polarization is faster than the response of the floating charge existing around the pyroelectric substrate, the electrical neutral state collapses on the surface of the pyroelectric substrate. As a result, surface charges are generated on the pyroelectric substrate surface. By taking out this surface charge as an output signal from the electrode, the pyroelectric element can be used as a sensor. Many of the pyroelectric infrared sensors use the pyroelectric elements as described above as detection pixels, and are configured by a sensor element group including a plurality of pyroelectric elements.
- Patent Document 1 discloses a pyroelectric infrared sensor called a compensation single type.
- the pyroelectric infrared sensor includes an electrode (light-receiving main element) that detects infrared rays and an electrode (temperature compensation element) that monitors a change in ambient temperature and corrects the temperature change.
- a filter is provided in a window portion of a shield case (exterior can) of an infrared filter.
- This filter transmits infrared rays so that the infrared rays are incident only on the light receiving main element.
- the temperature compensation element is shielded so as not to be affected by infrared rays irradiated from the outside.
- Patent Document 2 discloses a dual-type infrared sensor in which two current collecting elements having different polarization directions are connected in series or in parallel.
- the structures (shapes and dimensions) of the light receiving main element and the temperature compensation element disclosed in Patent Document 1 and Patent Document 2 are limited by the size of the shield case and the area of the opening through which infrared rays are transmitted.
- the infrared rays can enter the temperature compensation element and affect the sensitivity of the sensor. There is sex.
- the opening is made small, not only the infrared irradiation range and irradiation amount are limited, but also the sensor viewing angle becomes narrow, and the sensor output decreases.
- the viewing angle of the sensor becomes narrower as the distance between the light receiving main element and the opening becomes longer unless the area of the opening is changed, and becomes wider as it becomes shorter.
- a light shielding plate or a condensing mirror for improving sensor sensitivity is disposed in the space between the opening and the sensor element, a certain space is required between the shield case and the sensor element. The presence of this space is a factor that limits the settable range of the viewing angle in an actual design, and has been an obstacle to downsizing the sensor.
- an object of the present invention is to provide a pyroelectric infrared sensor that is small in size and can provide a sufficient output with a wide viewing angle.
- One aspect of the present invention is a first pyroelectric infrared sensor that includes a sensor element, a shield case that covers the sensor element, an infrared transmission filter, and an output that outputs an output signal of the sensor element after impedance conversion.
- a pyroelectric infrared sensor including a circuit and at least one reflective film is obtained.
- the sensor element has at least one pyroelectric element.
- the pyroelectric element includes a pyroelectric substrate having a front surface serving as a light receiving surface and a back surface opposite to the front surface, a front surface electrode provided on the front surface, and a position corresponding to the front surface electrode among the back surface And a back electrode provided on the substrate.
- the shield case has an opening.
- the opening is formed so as to be located above the surface electrode.
- the infrared transmission filter is provided in the opening.
- the reflective film reflects infrared rays incident from the outside. At least a part of the reflective film is located in a region between the infrared transmission filter and the surface electrode.
- the front surface electrode and the back surface electrode are arranged to face each other across the pyroelectric substrate, a capacitor is formed. It is desirable that the surface electrode has a large electrode area so that as much surface charge as possible can be obtained according to the amount of received infrared light. By increasing the electrode area, the capacitance of the sensor element is increased and the S / N ratio of the sensor is improved.
- the infrared absorption efficiency is improved by coating the surface of the surface electrode with an infrared absorption film such as titanium oxide or carbon as necessary. That is, a highly sensitive infrared sensor with high thermal efficiency and resistance to external noise can be obtained.
- an output electrode for extracting the sensor output signal is provided on the back surface of the pyroelectric substrate. It is desirable to arrange the output electrode as far as possible from the front electrode and the back electrode. Thereby, the release of heat absorbed by the surface electrode can be reduced.
- the shield case it is desirable to use 42 alloy with high electromagnetic shielding performance and low linear expansion coefficient.
- an inexpensive Fe-based metal or non-magnetic metal subjected to surface treatment with Ni plating or the like may be used.
- the infrared transmission filter is formed by forming a layer of zinc sulfide or the like on an infrared transmission material such as silicon or germanium.
- the wavelength of infrared light that can be transmitted through the infrared transmission filter is preferably about 5 ⁇ m to 15 ⁇ m. If necessary, the transmittance can be improved by forming a multilayer antireflection film.
- the output circuit is composed of only junction field effect transistors.
- a resistor having a high resistance value may be connected in parallel with the sensor element. Thereby, the fluctuation
- the second pyroelectric infrared sensor is a first pyroelectric infrared sensor, wherein the surface electrode includes at least two regions and the two regions.
- a pyroelectric infrared sensor having a connecting portion to be connected and having the reflecting film provided to face the connecting portion is obtained.
- the third pyroelectric infrared sensor is the first or second pyroelectric infrared sensor, wherein the reflective film is formed by sputtering or vacuum deposition. A pyroelectric infrared sensor is obtained.
- the fourth pyroelectric infrared sensor is the first or second pyroelectric infrared sensor, wherein the reflective film is formed by a printing method, coating, transfer, or dip. A pyroelectric infrared sensor formed by the construction method is obtained.
- the fifth pyroelectric infrared sensor is the first or second pyroelectric infrared sensor, wherein the reflective film is formed on a surface of a thin plate.
- the pyroelectric infrared sensor in which the thin plate is bonded to the shield case or the infrared transmission filter is obtained.
- the surface electrode by dividing the surface electrode into a plurality of parts and connecting adjacent surface electrodes in pairs, one can be shielded with a reflective film and used as a temperature compensation electrode, and the other can be used as an infrared detection electrode. .
- the sensor elements are connected in series with their polarities reversed, and the influence of ambient light can be further reduced.
- the reflective film and the conductor patterns of the surface electrodes connected in pairs may be arranged so as to face each other.
- the range (viewing angle) in which each sensor element can detect infrared rays is determined by the positional relationship between each electrode of the current collecting element and the reflective film. Therefore, by arranging the reflective film and the conductor pattern so as to face each other, the viewing angles can be arranged so as not to cross each other.
- a reflection film for reflecting infrared rays incident from the outside is provided in a part of a region between the infrared transmission filter and the surface electrode.
- the distance between the infrared transmission filter and the surface electrode is short.
- the reflective film can be used as an infrared light shielding plate. That is, the compensation electrode that needs to be shielded from infrared rays can prevent the infrared rays from wrapping around, so that the compensation electrode can be reliably shielded from the infrared rays.
- the pyroelectric infrared sensor according to the present invention includes a light receiving side electrode having a sufficient viewing angle. Further, the pyroelectric infrared sensor can be easily downsized by reducing the clearance between the shield case and the sensor element.
- the pyroelectric type can change the viewing angle freely and with high accuracy.
- An infrared sensor is obtained.
- the surface electrodes divided into two are connected to each other, and the angle of view that each surface electrode can detect is adjusted so as not to cancel each other.
- the area can be assigned to each divided electrode.
- a pyroelectric infrared sensor having a wider viewing angle than the viewing angle formed by one electrode can be obtained. Furthermore, a pyroelectric infrared that can detect movement in a narrower area by providing an area (dead zone) in which infrared rays are not detected in the area that can be detected by each light receiving electrode, and detecting entry and exit from the light receiving area A sensor is obtained.
- the reflective film may be formed by sputtering or vacuum deposition.
- the film thickness can be reduced by using these methods.
- a reflective film having a thin film pressure has a very small heat capacity and improves heat dissipation. Thereby, the thermal influence which acts on a sensor element can be reduced.
- the reflective film formed on the infrared transmission filter may be formed by a printing method, coating, transferring, or dipping method. According to such a construction method, the reflective film can be formed without using a large-scale manufacturing facility such as a sputtering apparatus or a vacuum evaporation apparatus. That is, the pyroelectric infrared sensor can be manufactured at low cost.
- the pyroelectric infrared sensor can be more easily manufactured by attaching a thin plate having a reflection film on the surface to a shield case or the infrared transmission filter.
- FIG. 2 is a plan view of an infrared transmission filter of the pyroelectric infrared sensor of FIG. 1. It is a block diagram showing the circuit of the pyroelectric infrared sensor of FIG.
- FIG. 7 is a plan view of an infrared transmission filter of the pyroelectric infrared sensor of FIG. 6. It is the figure which showed the operation
- the infrared sensor according to the present embodiment is used as follows, for example. As shown in the upper part of FIG. 1, when a measurement object (person) enters the viewing angle 11a of the infrared sensor from the left side of the figure, the electrical neutral state in the vicinity of the surface electrode 2a collapses, and the voltage of Vout is used as a reference. Potential is detected on the minus side. If the movement further continues and enters the viewing angle 11b, the electrical neutral state in the vicinity of the surface electrode 2b collapses, and a potential is detected on the plus side with respect to the voltage of Vout. Thereby, the pyroelectric infrared sensor can be used as direction detection when the measurement object enters and exits.
- the pyroelectric infrared sensor includes a sensor element 1, a shield case 8, an infrared transmission filter 7, and a reflective film 9.
- the sensor element 1 has one pyroelectric element.
- the pyroelectric element includes a pyroelectric substrate having a front surface and a back surface, front surface electrodes 2a and 2b provided on the front surface, and back surface electrodes 3a and 3b provided on the back surface.
- the surface of the pyroelectric substrate is a light receiving surface.
- the surface electrodes 2a and 2b are connected to each other and arranged on the light receiving surface side (front surface) of the pyroelectric substrate.
- the surface electrode 2a is used as a temperature compensation electrode
- the surface electrode 2b is used as a light receiving electrode.
- back surface electrodes 3 a and 3 b are disposed on the back surface of the sensor element 1.
- the back electrodes 3a and 3b are positioned so as to face the front electrodes 2a and 2b, respectively.
- the output electrodes provided on the back electrodes 3 a and 3 b are bonded to the circuit board 6 by the conductive adhesive 5.
- a junction field effect transistor 4 is mounted on the circuit board 6 as an impedance conversion circuit. As shown in FIG. 5, the gate input electrode of the junction field effect transistor 4 is connected to the back electrode 3a, and GND is connected to the back electrode 3b. The junction field effect transistor 4 impedance-converts the output signal of the sensor element 1 and outputs it.
- the outer periphery of the circuit board 6 is covered with a shield case 8.
- the shield case 8 has an opening (window) 10.
- the opening 10 is formed so as to be positioned above the surface electrodes 2a and 2b. That is, the surface electrodes 2 a and 2 b can be visually recognized through the opening 10.
- An infrared transmission filter 7 is fixed to the opening 10.
- the infrared transmission filter 7 is provided with a reflective film 9 that reflects infrared rays.
- the reflective film 9 is located in a region between the infrared transmission filter 7 and the surface electrode 2a. That is, the reflective film 9 is provided above the surface electrode 2 a and below the infrared transmission filter 7.
- a part of the reflective film according to the present embodiment is opposed to the surface electrode 2a.
- the reflective film 9 according to the present embodiment is an Ag film having a thickness of 0.5 ⁇ m.
- the reflective film 9 is formed with a thickness of 1 ⁇ m or less by a sputtering method or a vacuum deposition method so as not to affect the height of the sensor element. Since the heat capacity of the reflective film 9 is sufficiently smaller than the heat capacity of the sensor element 1, the influence on the characteristics of the sensor element is extremely small.
- the step of forming the reflection film can be performed simultaneously with the formation of the infrared transmission film in the vacuum deposition process included in the manufacturing process of the infrared transmission filter 7.
- the reflective film 9 can also be formed by any one of a printing method, coating, transferring, and dipping methods.
- a thin plate having a reflective film formed on the surface may be cut into a predetermined shape and attached to a shield case or the infrared transmission filter. According to these methods, since the reflective film can be formed without using a production facility such as a sputtering device or a vacuum vapor deposition device, the pyroelectric infrared sensor can be manufactured at low cost.
- the viewing angle capable of detecting infrared rays is determined by the positional relationship between the reflective film 9, the opening 10 of the shield case 8, and the surface electrodes 2a and 2b.
- the reflective film 9 may be disposed outside the shield case (that is, the upper surface of the infrared transmission filter 7).
- the shield case 8 that is, the lower surface of the infrared transmission filter 7
- the viewing angle of the surface electrode 2a temperature compensation electrode
- the viewing angle of the surface electrode 2b light receiving electrode
- the infrared sensor by the 2nd Embodiment of this invention is provided with the sensor element 1 similar to 1st Embodiment.
- both the surface electrodes 2a and 2b are used as light receiving electrodes, and as shown in FIGS. 6, 7 and 9, the reflective film 9 is connected between the surface electrodes 2a and 2b.
- the point which forms so that a pattern may be covered differs from 1st Embodiment.
- two pyroelectric bodies having different polarization directions are connected in series. Even if charges are generated in both pyroelectric elements due to a change in external temperature, external light, or the like, the total amount of charges existing on the surface electrodes 2a and 2b is constant, so the outputs are offset. As a result, influences other than infrared rays are compensated.
- the operation of the pyroelectric infrared sensor according to this embodiment will be described with reference to FIG.
- the electrical neutral state in the vicinity of the surface electrode 2a collapses, and a potential is detected on the negative side with respect to the voltage of Vout.
- the electrical neutral state in the vicinity of the surface electrode 2b collapses, and a potential is detected on the plus side with reference to the voltage of Vout. Therefore, it can be used as direction detection when the measurement object enters and exits.
- an intermediate area (dead zone) that is not detected at each viewing angle can be easily formed. By detecting the entry / exit between the dead zone and the viewing angle, the sensor can react even when the measurement object moves in a narrower range.
- the sensor element 1 and the circuit board 6 are mounted with a certain interval. As a result, the release of heat absorbed by the sensor element surface electrode can be reduced.
- the infrared transmission filter 7 is preferably fixed to the opening of the shield case 8 and the shield case 8 and the ground of the circuit board 6 are electrically connected.
- the viewing angle capable of detecting infrared rays is determined by the positional relationship between the reflective film 9, the opening 10 of the shield case 8, and the surface electrodes 2a and 2b.
- the reflective film 9 By forming the reflective film 9 so as to cover the connection pattern, the viewing angle of the surface electrode 2a and the viewing angle of the surface electrode 2b do not overlap each other, so that the sensor output is not canceled out.
- the sensor element 1 has a surface electrode 2a disposed at the center of the pyroelectric substrate and surface electrodes 2b disposed on both sides of the surface electrode 2a.
- the surface electrode 2a and the two surface electrodes 2b are connected by a connection pattern.
- the surface electrode 2a and the surface electrode 2b have the same height.
- the width of the surface electrode 2b is approximately half that of the surface electrode 2a.
- the back electrodes 3a and 3b are arranged so as to face the front electrodes 2a and 2b with the pyroelectric substrate interposed therebetween.
- the reflective film 9 is formed so as to cover the connection pattern connecting the surface electrodes 2a and 2b, as in the second embodiment.
- the viewing angle at which infrared rays can be detected is determined by the positional relationship among the reflective film 9, the opening 10 of the shield case 8, and the surface electrodes 2a and 2b.
- the sensor element 1 of the infrared sensor according to the fourth embodiment of the present invention includes four surface electrodes 2a, 2b, 2c and 2d.
- the surface electrodes 2a, 2b, 2c and 2d have the same area.
- the surface electrode 2a and the surface electrode 2b are connected to each other, and the surface electrode 2c and the surface electrode 2d are connected to each other.
- the back surface electrodes 3 a, 3 c, 3 b and 3 d are formed on the back surface of the sensor element 1 so as to face the surface electrodes, respectively.
- the surface electrodes 2a and 2b are connected to each other by output electrodes, and the surface electrodes 2c and 2d are also connected to each other by output electrodes.
- the reflective film 9 is provided in a region above the surface electrode 2b and a region above the surface electrode 2c among the four regions obtained by cutting the infrared transmission filter into four crosses and dividing into four equal parts. ing.
- the reflective film 9 is provided in a region above the surface electrode 2b and a region above the surface electrode 2c among the four regions obtained by cutting the infrared transmission filter into four crosses and dividing into four equal parts. ing.
- the present invention is based on Japanese Patent Application No. 2012-014984 filed with the Japan Patent Office on January 27, 2012, the contents of which are incorporated herein by reference.
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Abstract
Description
本実施の形態による赤外線センサは、例えば、次のように利用される。図1の上部に示すように、測定対象物(人)が赤外線センサの視野角11aに図の左側から進入すると、表面電極2a近傍の電気的な中性状態が崩れ、Voutの電圧を基準としてマイナス側に電位が検出される。さらに移動を続けて視野角11bに進入すると、表面電極2b近傍の電気的な中性状態が崩れ、Voutの電圧を基準としてプラス側に電位が検出される。これにより、焦電型赤外線センサは、測定対象物が出入りする際の方向検知として利用することが可能である。
図6乃至図9を参照して、本発明の第2の実施の形態による赤外線センサは、第1の実施形態と同様のセンサ素子1を備えている。しかし、表面電極2a及び2bを共に受光電極として使用している点、及び、図6、図7及び図9に示されるように、反射膜9は、表面電極2a、2bの中間に存在する接続パターンを覆うように形成する点が、第1の実施の形態と異なっている。
本発明の第3の実施の形態による焦電型赤外線センサの動作を、図10を用いて説明する。図10の上部に示されるように、本実施の形態による赤外線センサは、測定対象物が左側の視野角11bに図の左側から進入した場合、表面電極2a近傍の電気的な中性状態が崩れ、Voutの電圧を基準としてマイナス側に電位が検出される。さらに移動を続けて視野角11aに進入すると、プラス側の電位が検出される。さらに右に移動を続けて右側の視野角11bに侵入すると表面電極2b近傍の電気的な中性状態が崩れ、Voutからマイナスの電位が検出される。また、視野角11aと11bの間には、どちらの視野範囲にも属さない不感帯領域をつくることにより検知領域を細分化することが可能となる。各領域を横切った場合のみならず、細かい動作が行われた場合にもセンサ出力が得られる。
図14に示されるように、本発明の第4の実施の形態による赤外線センサのセンサ素子1は、4つの表面電極2a、2b、2c及び2dを備えている。表面電極2a、2b、2c及び2dの面積は、互いに等しい。表面電極2aと表面電極2bとが互いに接続され、表面電極2cと表面電極2dとが互いに接続されている。図15に示されるように、センサ素子1の裏面には、その表面電極にそれぞれ対向して形成された裏面電極3a、3c、3b及び3dが形成されている。表面電極2a、2bは、出力電極によって互いに接続され、表面電極2c、2dも出力電極によって互いに接続されている。図16に示されるように、反射膜9は、赤外線透過フィルターを十字に切って4等分した4つの領域のうち、表面電極2bの上方の領域と、表面電極2cの上方の領域に設けられている。このような構成とすることで、電極が2つの場合に比べてより細かい位置の検知が可能となる。さらに細かい検知を必要とするような電極を複数並べるアレイ型の素子においても、これら同様、容易に対応できる。
2a、2b、2c、2d 表面電極
3a、3b、3c、3d 裏面電極
4 接合型電界効果トランジスタ
5 導電接着剤
6 回路基板
7 赤外線透過フィルター
8 シールドケース
9 反射膜
10 開口部
11a、11b 視野角
Claims (5)
- センサ素子と、前記センサ素子を覆うシールドケースと、赤外線透過フィルターと、前記センサ素子の出力信号をインピーダンス変換して出力する出力回路と、少なくとも1つの反射膜とを備える焦電型赤外線センサであって、
前記センサ素子は、少なくとも1つの焦電素子を有しており、
前記焦電素子は、受光面となる表面及び前記表面の反対の面である裏面を有する焦電体基板と、前記表面に設けられた表面電極と、前記裏面のうち前記表面電極に対応する位置に設けられた裏面電極とを備えており、
前記シールドケースは、開口部を有しており、
前記開口部は、前記表面電極の上方に位置するように形成されており、
前記赤外線透過フィルターは、前記開口部に設けられており、
前記反射膜は、外部から入射する赤外線を反射するものであり、
前記反射膜の少なくとも一部は、前記赤外線透過フィルターと前記表面電極との間の領域に位置している、
焦電型赤外線センサ。 - 請求項1に記載の焦電型赤外線センサであって、
前記表面電極は、少なくとも2つの領域と、前記2つの領域を接続する接続部とを有しており、
前記反射膜は、前記接続部と対向するように設けられている、
焦電型赤外線センサ。 - 請求項1又は請求項2に記載の焦電型赤外線センサであって、
前記反射膜は、スパッタ法又は真空蒸着法により形成される、
焦電型赤外線センサ。 - 請求項1又は請求項2に記載の焦電型赤外線センサであって、
前記反射膜は、印刷法または塗布、転写又はディップ工法により形成される、
焦電型赤外線センサ。 - 請求項1又は請求項2に記載の焦電型赤外線センサであって、
前記反射膜は、薄板の表面に形成されており、
前記薄板は、前記シールドケース又は前記赤外線透過フィルターへ貼り合わせられている、
焦電型赤外線センサ。
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US14/374,413 US9329087B2 (en) | 2012-01-27 | 2012-07-11 | Pyroelectric-type infrared sensor |
DE201211005759 DE112012005759T5 (de) | 2012-01-27 | 2012-07-11 | Infrarotsensor vom pyroelektrischen Typ |
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US9442017B2 (en) * | 2014-01-07 | 2016-09-13 | Dale Read | Occupancy sensor |
WO2015108294A1 (en) * | 2014-01-15 | 2015-07-23 | Samsung Electronics Co., Ltd. | Optical sensor and electronic device with the same |
DE102015223362A1 (de) * | 2015-11-25 | 2017-06-01 | Minimax Gmbh & Co. Kg | Explosionsgeschütztes Gehäuse für Mittel zum Senden und Empfangen elektromagnetischer Strahlung |
TWI636240B (zh) * | 2015-12-31 | 2018-09-21 | 群光電能科技股份有限公司 | 光感測器 |
WO2017221718A1 (ja) * | 2016-06-23 | 2017-12-28 | 株式会社村田製作所 | 赤外線検出素子、および、赤外線検出装置 |
JP6976045B2 (ja) * | 2016-07-20 | 2021-12-01 | 株式会社トーキン | 焦電型赤外線センサ装置 |
CN111610699A (zh) * | 2019-02-22 | 2020-09-01 | 上海微电子装备(集团)股份有限公司 | 一种掩模对准传感器和光刻机 |
TWI721826B (zh) * | 2020-03-17 | 2021-03-11 | 高爾科技股份有限公司 | 紅外線熱反應式控制面板 |
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US9329087B2 (en) | 2016-05-03 |
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CN104011517B (zh) | 2016-12-28 |
TWI567370B (zh) | 2017-01-21 |
JP2012177680A (ja) | 2012-09-13 |
DE112012005759T5 (de) | 2014-11-20 |
TW201331561A (zh) | 2013-08-01 |
US20150053859A1 (en) | 2015-02-26 |
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