阅读说明：本技术 近红外量子光场成像探测仪 (Near-infrared quantum light field imaging detector ) 是由 毕思文 颜玲珠 张波 孟庆铭 龙城 童羽琪 于 2021-07-19 设计创作，主要内容包括：本申请公开了近红外量子光场成像探测仪,包括晶体、定焦镜头、支架、温度传感器、变频控制驱动器以及温控器,所述温控器跟所述支架相接,所述变频控制驱动器与所述温控器相接,所述温度传感器的接口跟所述变频控制驱动器相接,所述温度传感器的探头跟所述支架相接,所述支架用于跟晶体配合；所述变频控制驱动器用于驱动温控器的触发频率,所述变频控制驱动器触发时的脉冲宽度不变。(The application discloses a near-infrared quantum light field imaging detector, which comprises a crystal, a fixed focus lens, a support, a temperature sensor, a variable frequency control driver and a temperature controller, wherein the temperature controller is connected with the support; the frequency conversion control driver is used for driving the trigger frequency of the temperature controller, and the pulse width of the frequency conversion control driver is unchanged when the frequency conversion control driver is triggered.)

1. A near-infrared quantum light field imaging detector is characterized by comprising a crystal, a fixed focus lens, a support, a temperature sensor, a variable frequency control driver and a temperature controller, wherein the temperature controller is connected with the support, the variable frequency control driver is connected with the temperature controller, an interface of the temperature sensor is connected with the variable frequency control driver, a probe of the temperature sensor is connected with the support, and the support is used for being matched with the crystal; the frequency conversion control driver is used for driving the trigger frequency of the temperature controller, and the pulse width of the frequency conversion control driver is unchanged when the frequency conversion control driver is triggered.

2. The near-infrared quantum light field imaging detector according to claim 1, wherein the support comprises a cover support and a support, and a crystal is placed between the cover support and the support.

3. The near-infrared quantum light field imaging detector according to claim 2, further comprising a base, wherein the support bracket is disposed on the base, and the temperature controller is disposed between the base and the support bracket.

4. The near-infrared quantum light field imaging detector as claimed in claim 1, wherein the fixed focus lens includes a first lens sheet, a second lens sheet and a third lens sheet, the second lens sheet is located between the first lens sheet and the third lens sheet.

5. The near-infrared quantum light field imaging detector as claimed in claim 4, wherein the first lens sheet has two sides respectively being a first mirror surface and a second mirror surface, the second lens sheet has two sides respectively being a third mirror surface and a fourth mirror surface, the third lens sheet has two sides respectively being a fifth mirror surface and a sixth mirror surface, the first mirror surface is a convex mirror surface, the second mirror surface is a concave mirror surface, the third mirror surface is a concave mirror surface, the fourth mirror surface is a flat mirror surface, the fifth mirror surface is a convex mirror surface, the sixth mirror surface is a concave mirror surface, the first mirror surface and the second mirror surface, and the second lens sheet is located between the second mirror surface and the fifth mirror surface.

6. The quantum light field imaging system of claim 4, wherein the first lens plate, the second lens plate and the third lens plate are coated with antireflection films.

7. The quantum light field imaging system of claim 4, wherein the second lens sheet is an optical glass lens sheet, the third lens sheet is an optical glass lens sheet, and the first lens sheet is a chalcogenide glass lens sheet.

Technical Field

The invention relates to the field of quanta, in particular to a near-infrared quantum light field imaging detector.

Background

At present, the preparation of quantum optical field is produced by single frequency laser through the combined action of various crystals. One of the stability factors in quantum optical field generation is the need for extremely high crystal temperature control accuracy. At present, temperature control is relatively conventional current magnitude control in industry, and precision and stability of the temperature control affect the stability of quantum optical field preparation.

Disclosure of Invention

The invention provides a near-infrared quantum light field imaging detector aiming at the problems.

The technical scheme adopted by the invention is as follows:

the invention firstly provides a method for controlling the crystal temperature in a near-infrared quantum light field imaging detector,

the crystal body temperature control method comprises a support, a temperature sensor, a variable frequency control driver and a temperature controller, wherein the temperature controller is connected with the support, the variable frequency control driver is connected with the temperature controller, an interface of the temperature sensor is connected with the variable frequency control driver, a probe of the temperature sensor is connected with the support, the variable frequency control driver is used for driving the trigger frequency of the temperature controller, and the pulse width of the variable frequency control driver when the variable frequency control driver is triggered is unchanged.

In the crystal temperature control method, the temperature sensor is used for acquiring the temperature of the support, the temperature controller is used for heating the support, the support is used for placing the crystal, the frequency conversion control driver detects the temperature of the support through the temperature sensor to drive the trigger frequency of temperature control, the analog current drives the temperature controller, the temperature controller heats the support, and the pulse width is unchanged when the temperature controller is triggered, so that the requirement on the high precision of the crystal temperature is met. And the frequency conversion mode realizes the requirements of different types of crystals on the temperature range. The method improves the application range and the capability of different crystals to the temperature.

Optionally, the support comprises a cover support and a support, and a crystal is placed between the cover support and the support.

The crystal is clamped in the grooves of the cover bracket and the support bracket.

Optionally, the temperature controller further comprises a base, the support bracket is arranged on the base, and the temperature controller is arranged between the base and the support bracket.

Based on the method for controlling the crystal temperature, the invention further provides an imaging system for the quantum light field in the near-infrared quantum light field imaging detector.

The utility model provides a quantum light field imaging system, includes crystal and tight burnt camera lens, still includes the support, temperature sensor, frequency conversion control driver and temperature controller, the temperature controller with the support meets, the frequency conversion control driver with the temperature controller meets, temperature sensor's interface with the frequency conversion control driver meets, temperature sensor's probe with the support meets, the support is used for following the crystal cooperation.

Because need use the crystal among the quantum light imaging system, laser shines on the crystal, and then produces quantum light, and quantum light passes the tight burnt camera lens formation of image of going, owing to used the crystal in this system, must control the temperature of crystal in order to guarantee to form images, so adopt the support, temperature sensor, frequency conversion control driver and temperature controller, through adopting spare parts such as support, temperature sensor to control the temperature of crystal, realize the accurate accuse temperature to the crystal. The imaging system adopts the crystal temperature control method to control the temperature of the crystal.

Optionally, the fixed focus lens includes a first lens plate, a second lens plate and a third lens plate, and the second lens plate is located between the first lens plate and the third lens plate.

The imaging system provides an imaging lens in order to ensure that the absorption of imaging light is small during imaging and the imaging quality is ensured, and light rays are converged on an imaging surface through a first lens sheet, a second lens sheet and a third lens sheet once during imaging. The lens structure is composed of: the first lens is a positive meniscus lens, the focal power is positive, and the near-infrared medium material is zinc sulfide; the second lens sheet is a plano-concave lens, the focal power is negative, and the material is common optical glass; the third lens is a negative meniscus lens, the focal power is negative, and the material is common optical glass. The first mirror surface and the second mirror surface are respectively two surfaces of the first lens sheet, the third mirror surface and the fourth mirror surface are respectively two surfaces of the second lens sheet, the fifth mirror surface and the sixth mirror surface are respectively two surfaces of the third lens sheet, and the surfaces are plated with antireflection films.

Optionally, two sides of the first lens sheet are respectively a first mirror surface and a second mirror surface, two sides of the second lens sheet are respectively a third mirror surface and a fourth mirror surface, two sides of the third lens sheet are respectively a fifth mirror surface and a sixth mirror surface, the first mirror surface is a convex mirror surface, the second mirror surface is a concave mirror surface, the third mirror surface is a concave mirror surface, the fourth mirror surface is a flat mirror surface, the fifth mirror surface is a convex mirror surface, the sixth mirror surface is a concave mirror surface, the first mirror surface and the second mirror surface, and the second lens sheet is located between the second mirror surface and the fifth mirror surface.

The second lens sheet is a plano-concave lens, the fourth lens sheet is a plane, the design is beneficial to lens processing, the processing difficulty is low, the absorptivity of the whole lens is controlled within 1% after the common optical glass is added, and the loss of weak light is almost avoided.

Optionally, the first lens plate, the second lens plate and the third lens plate are plated with antireflection films.

Optionally, the second lens sheet is an optical glass lens sheet, the third lens sheet is an optical glass lens sheet, and the first lens sheet is a chalcogenide glass lens sheet.

Optionally, the support comprises a cover support and a support, and the crystal is sandwiched between the cover support and the support.

On the basis of the imaging system, the invention provides a near-infrared quantum light field imaging detector using the imaging system.

A near-infrared quantum light field imaging detector comprises the quantum light field imaging system.

The detector mainly comprises a detection part and a control processing part. The detection part consists of a laser, a compressed light field and an imaging system, the laser, the compressed square and the imaging system are made of high-strength and light materials, the stability of the equipment is ensured, all the parts are organically combined together and are mutually nested, and the device has the characteristics of small volume, light weight, easiness in irradiation imaging and the like. The control processing system integrates various sensors and controllers into a whole, and the small liquid crystal touch screen comprises a plurality of buttons, so that the small liquid crystal touch screen is convenient to operate and use. The back end of the equipment is also provided with various data interfaces which can be directly connected to a computer, so that the later equipment expansion and data information processing are facilitated.

The invention has the beneficial effects that: the frequency conversion control driver detects the temperature of the support through the temperature sensor, the trigger frequency of temperature control is driven, the temperature controller is driven by the analog current, the temperature controller heats the support, the temperature of the crystal can be accurately regulated, the frequency conversion mode meets the requirements of different kinds of crystals on the temperature range, and the application range and the capability of different crystals on the temperature are improved.

Description of the drawings:

FIG. 1 is a schematic diagram of the fit relationship of a crystal, a cover holder and a tray holder,

FIG. 2 is a schematic diagram showing the positional relationship of lens sheets of the fixed focus lens,

FIG. 3 is a schematic diagram of a flaw detector.

The figures are numbered: 1. the device comprises a cover bracket, a support bracket, a crystal, a temperature controller, a base seat, a temperature sensor, a frequency conversion control driver, a power supply and a temperature sensor, wherein the cover bracket 2, the support bracket 3, the crystal 4, the temperature controller 5, the base seat 6, the temperature sensor 7, the frequency conversion control driver 8 and the power supply are connected in series; 9. a first lens sheet; 901. a first mirror surface; 902. a second mirror surface; 10. a second lens sheet; 1001. a third mirror surface; 1002. a fourth mirror surface; 11. a third lens sheet; 1101. a fifth mirror surface; 1102. a sixth mirror surface; 12. an image plane.

The specific implementation mode is as follows:

the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to the attached figure 1, the crystal body temperature control method comprises a support, a temperature sensor 6, a variable frequency control driver 7 and a temperature controller 4, wherein the temperature controller 4 is connected with the support, the variable frequency control driver 7 is connected with the temperature controller 4, an interface of the temperature sensor 6 is connected with the variable frequency control driver 7, a probe of the temperature sensor 6 is connected with the support, the variable frequency control driver 7 is used for driving the trigger frequency of the temperature controller 4, and the pulse width when the variable frequency control driver 7 is triggered is unchanged.

In the temperature control method of the crystal 3, the temperature sensor 6 is used for acquiring the temperature of the support, the temperature controller is used for heating the support, the support is used for placing the crystal 3, the frequency conversion control driver 7 detects the temperature of the support through the temperature sensor 6 to drive the trigger frequency of temperature control, the analog current drives the temperature controller 4, the temperature controller 4 heats the support, and the pulse width is unchanged when triggering is carried out, so that the requirement of high temperature precision of the crystal 3 is met. And the frequency conversion mode realizes the requirements of different types of crystals 3 on the temperature range. The method improves the application range and the capability of different crystals 3 to the temperature.

As shown in the cross section of fig. 1, the crystal 3 is placed in the mounting groove between the cover bracket 1 and the support bracket 2 to be tightly combined, and the crystal is a rectangular parallelepiped with a square cross section.

As shown in the cross-section of fig. 1, the thermostat 4 is placed in tight engagement between the cradle 2 and the base 5.

As shown in fig. 1, the temperature sensor 6 is placed in the mounting hole between the cover bracket 1 and the support bracket 2 to be tightly combined, the temperature sensor 6 is a cylinder, and the temperature measuring head is installed inward.

As shown in fig. 1, a signal line interface of the temperature sensor 6 is connected to the variable frequency control driver 7 for temperature detection and adjustment of the amplitude of the output current.

As shown in fig. 1, a driving power line of the variable frequency control driver 7 is connected to the temperature controller 4 for driving the temperature controller 4.

As shown in fig. 1, a power supply 8 is connected to the variable frequency control driver 7 through a power line for providing the power required by the thermostat.

Example 2

The utility model provides a quantum light field imaging system, includes crystal 3 and tight shot, still includes the support, and temperature sensor 6, variable frequency control driver 7 and temperature controller 4, temperature controller 4 meet with the support, and variable frequency control driver 7 meets with temperature controller 4, and temperature sensor 6's interface meets with variable frequency control driver 7, and temperature sensor 6's probe meets with the support, and the support is used for following crystal 3 cooperation.

Because crystal 3 needs to be used among the quantum light imaging system, laser shines on crystal 3, and then produces quantum light, and quantum light passes the tight shot imaging, owing to used crystal 3 among this system, must control crystal 3's temperature in order to guarantee to form images, so adopt the support, temperature sensor 6, variable frequency control driver 7 and temperature controller 4, through adopting spare parts such as support, temperature sensor 6 to control crystal 3's temperature, realize controlling the accurate temperature of crystal 3. The imaging system controls the temperature of the crystal 3 by using the above-mentioned temperature control method of the crystal 3.

As shown in fig. 2, the fixed focus lens includes a first lens plate 9, a second lens plate 10, and a third lens plate 11, and the second lens plate 10 is located between the first lens plate 9 and the third lens plate 11.

The imaging system provides an imaging lens in order to ensure that the absorption of imaging light is small during imaging and the imaging quality is ensured, and light rays are converged on an imaging surface 12 through a first lens sheet 9, a second lens sheet 10 and a third lens sheet 11 once during imaging. The lens structure is composed of: the first lens is a positive meniscus lens, the focal power is positive, and the near-infrared medium material is zinc sulfide; the second lens sheet 10 is a plano-concave lens, the focal power is negative, and the material is common optical glass; the third lens 11 is a negative meniscus lens, the focal power is negative, and the material is common optical glass. The first mirror 901 and the second mirror 902 are two surfaces of the first lens plate 9, the third mirror 1001 and the fourth mirror 1002 are two surfaces of the second lens plate 10, and the fifth mirror 1101 and the sixth mirror 1102 are two surfaces of the third lens plate 11, which are plated with antireflection films.

As shown in fig. 2, two sides of the first lens plate 9 are respectively a first mirror 901 and a first second mirror 902, two sides of the second lens plate 10 are respectively a third mirror 1001 and a fourth mirror 1002, two sides of the third head lens 11 are respectively a fifth mirror 1101 and a sixth mirror 1102, the first mirror 901 is a convex mirror, the first second mirror 902 is a concave mirror, the third mirror 1001 is a concave mirror, the fourth mirror 1002 is a flat mirror, the fifth mirror 1101 is a convex mirror, the sixth mirror 1102 is a concave mirror, the first mirror 901 and the second mirror 902, and the second lens plate 10 is located between the first second mirror 902 and the fifth mirror 1101.

The second lens sheet 10 is a plano-concave lens, the fourth mirror 1002 is a plane, the design is beneficial to lens processing, the processing difficulty is low, the absorptivity of the whole lens is controlled within 1% after the common optical glass is added, and the loss of weak light is almost avoided.

As shown in fig. 2, the first lens sheet 9, the second lens sheet 10, and the third lens sheet 11 are coated with antireflection films.

As shown in fig. 2, the second lens sheet 10 is an optical glass lens sheet, the third lens sheet 11 is an optical glass lens sheet, and the first lens sheet 9 is a chalcogenide glass lens sheet.

As shown in fig. 2, the holder includes a cover holder 1 and a holder 2, and a crystal 3 is sandwiched between the cover holder 1 and the holder 2.

The design is beneficial to lens processing, more economical in cost and capable of reducing processing difficulty. After the common optical glass is added, the absorptivity of the whole lens is controlled within 1 percent, and the loss of weak light is almost avoided.

The imaging quality of the fixed-focus lens completely meets the requirements of the current mainstream near-infrared camera, for example, 1064nm wavelength imaging is adopted, the diffuse spot radius of an imaging system can be controlled within 2 mu m, the distortion is controlled within 0.5%, the requirements of a photosensitive element are met, the pixel size of a general near-infrared camera is 10 mu m-20 mu m, and enough space is reserved for upgrading the pixel size of the photosensitive element.

As shown in fig. 2, the first lens sheet, the second lens sheet, and the third lens sheet are assembled in the above-mentioned order, and the near-infrared light reflected by the target object sequentially passes through the first mirror surface, the second mirror surface, the third mirror surface, the fourth mirror surface, the fifth mirror surface, and the sixth mirror surface from left to right, and finally converges on the image plane.

The above-mentioned illustration case can be a single wavelength imaging in the near infrared of 0.8 μm-1.7 μm, and can also be a wavelength imaging in the near infrared of 0.8 μm-1.7 μm. In the case, when the incident wavelength is 1064nm, the field angle is 6 degrees, the aperture value is 28mm, the focal length is 120mm, and the rear working distance is 80mm, the image height is 8mm, the diameter of the diffuse spot is less than 2 μm, and the distortion is less than 0.5%.

Example 3

As shown in fig. 3, a near-infrared quantum light field imaging detector includes the above quantum light field imaging system.

The detector mainly comprises a detection part and a control processing part. The detection part consists of a laser, a compressed light field and an imaging system, the laser, the compressed square and the imaging system are made of high-strength and light materials, the stability of the equipment is ensured, all the parts are organically combined together and are mutually nested, and the device has the characteristics of small volume, light weight, easiness in irradiation imaging and the like. The control processing system integrates various sensors and controllers into a whole, and the small liquid crystal touch screen comprises a plurality of buttons, so that the small liquid crystal touch screen is convenient to operate and use. The back end of the equipment is also provided with various data interfaces which can be directly connected to a computer, so that the later equipment expansion and data information processing are facilitated.

The near-infrared quantum detector adopts an aluminum alloy shell, has high strength, good heat resistance, firmness and durability, and is simple in overall appearance and attractive and elegant in appearance. The whole size of the instrument is desktop equipment, the instrument is small in size, convenient to place and use, and suitable for various detection and flaw detection occasions.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, which is defined by the claims and their equivalents, and can be directly or indirectly applied to other related fields of technology.