CN110108309B

CN110108309B - A high-sensitivity photoelectric sensing device

Info

Publication number: CN110108309B
Application number: CN201910230059.2A
Authority: CN
Inventors: 邓飞; 付志强; 熊艳
Original assignee: Yangtze University
Current assignee: Yangtze University
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2021-08-20
Anticipated expiration: 2039-03-26
Also published as: CN110108309A

Abstract

The invention relates to a high-sensitivity photoelectric sensing device, which is used for further carrying out photoelectric sensing detection on the basis of accurate light condensation and light filtering, and comprises a planar lens, a scaly reflecting cover, a secondary light condensation system, a photoelectric sensor circuit and a bracket; the device transmits light to be measured to a planar lens for filtering, then the light is incident into the scale-nail reflecting cover and converged to a secondary light-gathering system, then the light is incident on the photoelectric sensor, and signals are processed by the photoelectric sensor circuit system and then output.

Description

High-sensitivity photoelectric sensing device

Technical Field

The invention relates to the technical field of structural design and application of photoelectric device systems, in particular to a high-sensitivity photoelectric sensing device.

Background

The photoelectric sensor adopts a photoelectric element as a detection element, has the characteristics of non-contact, quick response, high precision, reliable performance and the like, has a plurality of measurable parameters, and has simple structure and flexible and various forms, thereby being widely applied to the aspects of detection, control and the like.

The use of a light-gathering system to increase the light absorption amount is an important direction in the current solar cell research. The direct sunlight is converged by the lens or the reflector, and then received by the solar cell, so that the light is converted from a relatively large area to a relatively small area of the solar cell, the photovoltaic efficiency can be improved, the area of the cell can be reduced, and the cost of a photovoltaic system is effectively reduced. In the beginning of the 21 st century, the application of the concentrating photovoltaic power generation technology has been successful. The light condensing system is combined with the photoelectric sensor to achieve the same effect, and if a light filtering function is further added to the light condensing system, the detection sensitivity and the detection band accuracy of the sensor can be further improved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a photoelectric sensor based on a light filtering type light focusing system, which further performs photoelectric sensing detection on the basis of accurate light focusing and light filtering to obtain a photoelectric sensor part with high sensitivity and smaller size, and comprises a planar lens, a squama reflecting cover, a secondary light focusing system, a photoelectric sensor circuit and a bracket; light to be measured enters the scale nail reflecting cover after being filtered by the planar lens, is converged to the secondary light condensing system and then enters the photoelectric sensor, and signals are output after being processed by the photoelectric sensor circuit system.

In order to achieve the purpose, the invention discloses a high-sensitivity photoelectric sensing device, which comprises a planar lens 1, a scaly reflecting cover 2, a secondary light-gathering system 3, a photoelectric sensor circuit 4 and a bracket 5;

the round edge of plane lens 1 is coincided with the opening of squama bowl 2, plane lens 1 is used for permeating through the light of specific wave band, squama bowl 2 with secondary condensing system 3 is used for the light convergence that will permeate through in an area, light spot signal conversion after photoelectric sensor circuit 4 is used for filtering, assembles into the signal of telecommunication and handles.

The planar lens 1 comprises a light filter film 11 on the outermost side, which is used for filtering multi-band incident light and screening out light in a required band, a second antireflection film 12 enables the light to be incident, a third planar glass substrate 13 and a fourth one-way light-transmitting film 14 are used for enabling the light to penetrate from the outer side to the inner side, otherwise, the light is not transmitted, and the inner side has high reflectivity;

the squama reflecting cover 2 comprises a cover-shaped structure 21 formed by paraboloids and small reflecting curved surfaces 22 closely arranged on the inner surface of the cover-shaped structure 21;

the secondary light-gathering system 3 comprises a condenser lens 31, a plane reflector 32 and a dodging lens 33, wherein the condenser lens 31 is positioned at the lower opening of the cover-shaped structure 21 formed by the paraboloid, the radius of the lower opening is the same as that of the condenser lens 31, the center of the plane reflector 32 is positioned at the focus of the condenser lens 31, and the focus of the dodging lens 33 is positioned at the center of the plane reflector 32;

the photosensor circuit 4 includes a photosensor and output terminal 41 and a device slot 42, wherein the photosensor and output terminal 41 includes a power supply and a circuit control module, and the device 42 is provided with a replacement photosensor device.

In the above-described embodiment, the combination of the flat lens 1, the scale cover 2, and the secondary light collecting system 3 selectively transmits and collects the optical signal.

In the above technical solution, the secondary light-collecting system 3 may include a filter element to further filter the light filtered by the planar lens 1.

In the above technical solution, the closely-arranged reflective small curved surfaces 22 on the inner surface of the cover-shaped structure 21 are overlapped one by one from the lower opening to the upper opening from the junction of the focal cross-sections of the cover-shaped structure 21 formed by the concave surfaces, so as to form a scaly structure as a whole;

in the above technical solution, the shape of the concave cover-shaped structure 21 is a paraboloid, a hemisphere, or a semi-ellipsoid, wherein the shape of the minor curve forming the squama-shaped structure is a hemisphere, an ellipsoid, or a paraboloid;

in the above technical solution, the photoelectric sensor is an inorganic photoelectric sensor, or an organic/inorganic hybrid photoelectric sensor, and the types include a photoresistor, a photodiode, a phototriode, a photocell, a photoelectric position sensitive device, a photomultiplier, and a photothermal effect device.

In the above technical solution, the support 5 includes an up-down angle correction knob 51, a left-right angle correction ferrule 52 and an integral support 53, and the upper opening of the squama manicure reflector 2 is aligned to the incident light through the adjustment support.

The invention discloses a high-sensitivity photoelectric sensing device, which has the following beneficial effects: 1. the light in a certain area is converged in a narrow area through a light condensation system in a light condensation mode, and the photoelectric sensor only needs to focus on the area, so that the using amount of the sensor is greatly reduced. By amplifying the optical signal, the technique also effectively reduces the amount of semiconductor material used in the sensor. 2. The system with the light gathering and filtering function selectively penetrates through the light signal and gathers and amplifies the light signal, so that the sensitivity of the sensor is greatly improved, and the targeting property of the specific light wave band detection is also improved. 3. The response wavelength can be adjusted by replacing the filter element, so that the requirement on the response band of the photoelectric sensor is reduced, and the application range is greatly widened; 4. the direction is adjusted through the angle knob to receive incident light with directionality, so that the device is flexible and convenient; 5. the photoelectric sensor can be flexibly replaced; 6. the efficiency is high and the loss is low; the recyclable part is increased, which is beneficial to environmental protection. 7. The large-area and industrial production is easy to realize, and the miniaturization and integration application is easy to realize.

Drawings

FIG. 1 is a schematic plan view of a high-sensitivity photoelectric sensor according to the present invention;

description of the drawings: the device comprises a 1-plane lens, a 11-light filtering film, a 12-antireflection film, a 13-plane glass substrate, a 14-one-way light transmission film, a 2-squama-reflecting cover, a 21-cover-shaped structure, a 22-reflecting small curved surface, a 3-secondary light-gathering system, a 31-light-gathering lens, a 32-plane reflector, a 33-light-homogenizing lens, a 4-photoelectric sensor, a 41-photoelectric sensor and an output end, a 42-device groove, a 5-bracket, a 51-upper and lower angle correcting knob, a 52-left and right angle correcting ferrule and a 53-integral supporting bracket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, and provides a high-sensitivity photoelectric sensing device, as shown in fig. 1, the device includes a planar lens 1, a scaly reflecting cover 2, a secondary light-condensing system 3, a photoelectric sensor circuit 4 and a bracket 5;

the round edge of the plane lens 1 is matched with the opening of the scaly nail reflecting cover 2, the plane lens 1 is used for transmitting light with a required wave band, the scaly nail reflecting cover 2 and the secondary light-gathering system 3 are used for gathering the transmitted light in a narrow area, the photoelectric sensor circuit 4 is used for converting spot signals obtained after filtering and gathering into electric signals and processing the electric signals, and the electric signals are used for processing noise removal, amplification, analysis and the like.

The planar lens 1 comprises a light filter film 11 on the outermost side for filtering multi-band incident light and screening out light of a specific band, such as ultraviolet light and blue light around 450nm, a second antireflection film 12 for transmitting most of the incident light and reflecting only a little of the incident light, a third planar glass substrate 13 and a fourth one-way light-transmitting film 14 for transmitting the light from the outer side to the inner side, and otherwise, the third planar glass substrate and the fourth one-way light-transmitting film are opaque, and the inner side has high reflectivity;

The combination of the flat lens 1, the scale cover 2, and the secondary light collecting system 3 selectively transmits and collects light signals.

The secondary light-collecting system 3 may include a filter element to further filter the light filtered by the planar lens 1.

Wherein, the small reflective curved surfaces 22 densely arranged on the inner surface of the cover-shaped structure 21 are overlapped one by one from the lower opening to the upper opening from the junction of the focus cross sections of the cover-shaped structure 21 formed by the concave surfaces to form a scaly structure;

optionally, the shape of the concave cover-shaped structure 21 is a paraboloid, a hemispherical surface, a semi-ellipsoid surface, preferably a paraboloid, and optionally, the shape of the small curved surface forming the scaly structure is a hemisphere, an ellipsoid, a paraboloid; preferably hemispherical;

the photoelectric sensor is an inorganic photoelectric sensor, an organic photoelectric sensor or an organic/inorganic hybrid photoelectric sensor, and the type of the photoelectric sensor comprises a photoresistor, a photodiode, a phototriode, a photocell, a photoelectric position sensitive device, a photomultiplier, a photo-thermal effect device or a combination of the above devices, or a system consisting of the above devices, other elements and circuit devices.

The support 5 comprises an upper and lower angle correction knob 51, a left and right angle correction ferrule 52 and an integral support bracket 53, and the upper opening of the squama manicure reflector 2 is directly opposite to the incident light through the adjustment bracket.

The working principle of the high-sensitivity photoelectric sensing device is as follows:

s1, adjusting the upper and lower angle correcting knobs 51 and the left and right angle correcting ferrules 52 of the bracket 5 to enable the upper opening of the squama manicure reflector 2 to be opposite to the incident light;

and S2, the multiband light rays penetrate through the planar lens 1 to be filtered and then enter the squama reflecting cover 2, and after passing through the small reflecting curved surface 22, the light rays are converged on the surface of the condenser lens 31.

S3, the divergent light is converged on the surface of the plane mirror 32 by the condenser lens 31, and then the light is incident on the dodging lens 33, and then refracted into parallel and concentrated light to be irradiated on the photoelectric sensor 41.

S4, the photo sensor and the output terminal 41 convert the light energy into electric energy and output the electric energy to the device, and the photo sensor 41 can be replaced by the device slot 42.

The parts not described in the specification are prior art or common general knowledge. The present embodiments are to be considered as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.

Claims

1. a high-sensitivity photoelectric sensor device, characterized in that the device comprises a plane lens (1), a scale reflector (2), a secondary light-gathering system (3), a photoelectric sensor circuit (4) and a bracket (5);

The circular edge of the plane lens (1) coincides with the opening of the scale reflector (2), the plane lens (1) is used to transmit light of a desired wavelength band, and the scale reflector (2) and the secondary concentrating system (3) is used for condensing the transmitted light in one area, and the photoelectric sensor circuit (4) is used for converting the filtered and converged light spot signals into electrical signals and processing them ;

The flat lens (1) includes an outermost filter film (11), which is used to filter the incident light of multiple wavelength bands to filter out light of a specific wavelength band, the second layer of anti-reflection coating (12) makes the light incident, and the third The layered flat glass substrate (13) and the fourth layer of one-way light-transmitting film (14) are used to make the light penetrate from the outside to the inside, otherwise it is opaque, and the inner side has a high reflectivity;

The scale reflector (2) includes a hood-like structure (21) formed by a paraboloid and a small reflective surface (22) whose inner surface is densely packed;

The secondary condensing system (3) comprises a condensing lens (31), a plane reflecting mirror (32) and a uniform light lens (33), and the condensing lens (31) is located in a cover-shaped structure (21) formed by a paraboloid and the radius of the lower opening is the same as that of the condensing lens (31), the center of the flat reflector (32) is located at the focal point of the condensing lens (31), and the uniform light lens (33) has a the focal point is at the center of the plane mirror (32);

The photoelectric sensor circuit (4) includes a photoelectric sensor, an output end (41), and a device slot (42), wherein the photoelectric sensor and the output end (41) include a power supply and a circuit control module, and the device slot (42) is provided with a Replacement photoelectric sensor devices;

The bracket (5) includes an upper and lower angle correction knob (51), a left and right angle correction collar (52) and an integral support bracket (53).

2. A high-sensitivity photoelectric sensing device according to claim 1, wherein the combination of the plane lens (1), the scale reflector (2), and the secondary light-gathering system (3) selectively The light signal is transmitted and concentrated.

3. The high-sensitivity photoelectric sensing device according to claim 1, characterized in that, the secondary concentrating system (3) can include a filter element, which can filter the light filtered by the plane lens (1). filter further.

4. The high-sensitivity photoelectric sensing device according to claim 1, characterized in that the inner surface of the cover-shaped structure (21) is densely packed reflective small curved surfaces (22), and the cover-shaped structure (21) is formed from a concave surface. ), the small curved surfaces are superimposed one by one from the lower opening to the upper opening, forming a scale-like structure as a whole.

5. The high-sensitivity photoelectric sensing device according to claim 4, wherein the concave mask-like structure (21) is in the shape of a paraboloid, a hemisphere, and a semi-ellipsoid, wherein the small scaly structures that form the The shape of the surface is hemisphere, ellipsoid, and paraboloid.

6 . The high-sensitivity photoelectric sensing device according to claim 1 , wherein the photoelectric sensor is an inorganic photoelectric sensor, an organic photoelectric sensor, or an organic/inorganic hybrid photoelectric sensor, and the types include photoresistor, photoelectric Diode, phototransistor, photocell, photoelectric position sensitive device, photomultiplier tube, photothermal effect device or a combination of the above types of devices.