Micro-lens low-light imaging device

Abstract

The utility model relates to the technical field of medical endoscopy, industrial flaw detection and military reconnaissance, and discloses a macro lens low-light imaging device which comprises a CMOS base plate, the top of the CMOS base plate is fixedly connected with a CMOS, the top of the CMOS is provided with a trapezoidal light path macro lens, the exterior of the trapezoidal light path macro lens is filled with high-refractive-index optical cement, and the high-refractive-index optical cement is filled with high-refractive-index optical cement. An optical fiber panel is arranged at the top of the high-refractive-index optical cement filler, a low-light-level image intensifier is fixedly connected to the top of the optical fiber panel, an automatic focusing optical lens is fixedly connected to the top of the low-light-level image intensifier, the low-light-level image intensifier adopts a third-generation image intensifier, and the working sensitivity reaches 5 * 10 <-4 > lx. According to the utility model, due to the adoption of the third-generation image intensifier, extremely weak light signals can be amplified. Meanwhile, the provided piezoelectric ceramic focusing mechanism further ensures that the light is accurately focused on the low-light image intensifier, and effective capture and preliminary enhancement of the weak light are realized.

Description

Technical Field

[0001] This utility model relates to the fields of medical endoscopy, industrial flaw detection and military reconnaissance technology, specifically a macro lens low-light imaging device. Background Technology

[0002] With continuous technological advancements, the performance of photoelectric conversion devices and optical lenses will continue to improve, enabling macro lens low-light imaging devices to achieve higher resolution and sensitivity, capturing finer details and weaker light.

[0003] Most existing low-light shaping devices cannot achieve both high-precision imaging and miniaturization in low-light environments. To address these issues, a macro lens low-light imaging device is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a macro lens low-light imaging device, which solves the problem that most existing low-light shaping devices in the background art cannot achieve both high-precision imaging and miniaturization in low-light environments.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a macro lens low-light imaging device, comprising a CMOS base plate, a CMOS fixedly connected to the top of the CMOS base plate, a trapezoidal optical path macro lens disposed on the top of the CMOS, a high refractive index optical adhesive filling disposed on the outside of the trapezoidal optical path macro lens, an optical fiber panel disposed on the top of the high refractive index optical adhesive filling, a low-light image intensifier fixedly connected to the top of the optical fiber panel, and an autofocus optical lens fixedly connected to the top of the low-light image intensifier.

[0006] By adopting the above technical solution, the optical path is folded three times using a 45° prism, compressing the axial dimension to one-third of that of the traditional structure.

[0007] As a further description of the above technical solution: the low-light image intensifier adopts a third-generation image intensifier with a working sensitivity of 5×10⁻⁶. -4 The LX is equipped with a piezoelectric ceramic focusing mechanism (focusing accuracy ±2μm).

[0008] By adopting the above technical solution and using a third-generation image intensifier, the working sensitivity reaches as high as 5×10⁻⁶. -4 The lx amplifies extremely weak light signals. Simultaneously, the equipped piezoelectric ceramic focusing mechanism (focusing accuracy ±2μm) further ensures that the light is precisely focused on the low-light image intensifier, achieving effective capture and initial enhancement of weak light, converting the light signal into a stronger electronic signal.

[0009] As a further description of the above technical solution: the high refractive index optical adhesive filling is a customized high refractive index optical adhesive (n=1.78) to achieve zero-gap coupling between the fiber optic panel and the trapezoidal optical path macro lens, and the light transmittance is increased to 98.5%.

[0010] By adopting the above technical solution, the loss of light during transmission is greatly reduced, ensuring that light is transmitted stably and efficiently to the next imaging stage.

[0011] As a further description of the above technical solution: the optical fiber panel is a trapezoidal optical fiber board (one end has a larger area than the other end), which efficiently transmits the light output by the low-light image intensifier to a smaller sensor.

[0012] By adopting the above technical solution, a high-refractive-index optical adhesive (n=1.78) is filled between the fiber optic plate and the lens, increasing the transmittance to 98.5% and reducing light loss.

[0013] As a further description of the above technical solution: a miniature thermoelectric cooler (TEC) is integrated between the low-light image intensifier and the trapezoidal optical path macro lens, with a temperature control accuracy of ±0.5℃.

[0014] By adopting the above technical solution, the miniature thermoelectric cooler can actively regulate the temperature of key components during the operation of the device, avoid performance degradation caused by temperature changes, ensure that the low-light image intensifier and trapezoidal optical path macro lens are always in the best working state, maintain the stability and accuracy of imaging, and ensure that high-quality images can be continuously output under different ambient temperatures.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a macro lens low-light imaging device, which works in conjunction with a high-refractive-index optical adhesive filling, a trapezoidal optical path macro lens, an optical fiber panel, a low-light image intensifier, and an autofocus optical lens. Due to the use of a third-generation image intensifier, extremely weak light signals can be amplified. At the same time, the equipped piezoelectric ceramic focusing mechanism further ensures that the light is accurately focused on the low-light image intensifier, realizing the effective capture and initial enhancement of weak light, converting the light signal into a stronger electronic signal. With the trapezoidal optical fiber plate, the light output from the low-light image intensifier can be efficiently transmitted to a smaller sensor, effectively reducing the system size and cost. Furthermore, a customized high-refractive-index optical adhesive is filled between the optical fiber panel and the trapezoidal optical path macro lens (4), realizing zero-gap coupling between the two, increasing the light transmittance to 98.5%, greatly reducing the loss of light during transmission, and ensuring that the light is stably and efficiently transmitted to the next imaging stage. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a side view of the present invention;

[0020] Figure 4 This is a perspective view of the present invention.

[0021] In the diagram: 1. CMOS substrate; 2. CMOS; 3. High-refractive-index optical adhesive filler; 4. Trapezoidal optical path macro lens; 5. Fiber optic panel; 6. Low-light image intensifier; 7. Autofocus optical lens. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0024] Reference Figure 1-4 This utility model discloses a macro lens low-light imaging device, comprising a CMOS base plate 1, with a CMOS 2 fixedly connected to the top of the CMOS base plate 1. The CMOS base plate 1 provides a stable working environment and circuit connection for the CMOS 2, ensuring effective transmission and processing of electrical signals, ultimately forming image data that can be subsequently analyzed, stored, or displayed. A trapezoidal optical path macro lens 4 is disposed on the top of the CMOS 2. The trapezoidal optical path macro lens 4 can clearly image small objects at close range, meeting the macro shooting needs in specific scenarios. The trapezoidal optical path macro lens 4 is externally equipped with a high-refractive-index optical adhesive filler 3. A fiber optic panel 5 is mounted on top of the high-refractive-index optical adhesive filler 3. Custom high-refractive-index optical adhesive (n=1.78) is used as the high-refractive-index optical adhesive filler 3 between the fiber optic panel 5 and the trapezoidal optical path macro lens 4, achieving zero-gap coupling between the two and increasing the light transmittance to 98.5%. A low-light image intensifier 6 is fixedly connected to the top of the fiber optic panel 5, and an autofocus optical lens 7 is fixedly connected to the top of the low-light image intensifier 6. The autofocus optical lens 7 can automatically adjust the focal length according to the shooting requirements to ensure that the light is accurately focused on the subsequent components.

[0025] Reference Figure 1-4 The low-light image intensifier 6 adopts a third-generation image intensifier with a working sensitivity of 5×10⁶.-4 The LX is equipped with a piezoelectric ceramic focusing mechanism (focusing accuracy ±2μm) and boasts a working sensitivity of up to 5×10⁻⁶ thanks to its third-generation image intensifier. -4 The lx amplifies extremely weak light signals. Simultaneously, the equipped piezoelectric ceramic focusing mechanism (focusing accuracy ±2μm) further ensures precise focusing of light onto the low-light image intensifier 6, achieving effective capture and initial enhancement of weak light, converting the light signal into a stronger electronic signal. The high-refractive-index optical adhesive filler 3, a custom-made high-refractive-index optical adhesive (n=1.78), achieves zero-gap coupling between the fiber optic panel 5 and the trapezoidal optical path macro lens 4, increasing light transmittance to 98.5%, greatly reducing light loss during transmission and ensuring stable and efficient light transmission to the next imaging stage. The fiber optic panel 5 is a trapezoidal fiber optic plate (one end larger than the other), efficiently transmitting the light output from the low-light image intensifier 6 to a smaller sensor. A miniature thermoelectric cooler (TEC) is integrated between the low-light image intensifier 6 and the trapezoidal optical path macro lens 4, with a temperature control accuracy of ±0.5℃, avoiding performance degradation due to temperature changes and ensuring that the low-light image intensifier 6 and the trapezoidal optical path macro lens 4 are always in optimal working condition.

[0026] Working Principle: In low-light environments, weak ambient light first enters the device through the autofocus optical lens 7. The autofocus optical lens 7 automatically adjusts its focus according to shooting requirements, ensuring the light is accurately focused onto subsequent components. Next, the light reaches the low-light image intensifier 6. Due to the use of a third-generation image intensifier, the operating sensitivity reaches 5×10⁻⁶. -4The lx amplifies extremely weak light signals. Simultaneously, the equipped piezoelectric ceramic focusing mechanism (focusing accuracy ±2μm) further ensures precise focusing of light onto the low-light image intensifier 6, achieving effective capture and initial enhancement of weak light, converting the light signal into a stronger electronic signal. The light enhanced by the low-light image intensifier 6 is output from its top to the fiber optic panel 5. Here, the fiber optic panel 5 is a trapezoidal fiber optic plate (one end larger than the other), which can efficiently transmit the light output from the low-light image intensifier 6 to a smaller sensor, effectively reducing system size and cost. Furthermore, a custom high-refractive-index optical adhesive (n=1.78) is filled between the fiber optic panel 5 and the trapezoidal optical path macro lens 4 as the high-refractive-index optical adhesive filler 3, achieving zero-gap coupling between the two, increasing light transmittance to 98.5%, greatly reducing light loss during transmission, and ensuring stable and efficient light transmission to the next imaging stage. The light then undergoes macro imaging processing via the trapezoidal optical path macro lens 4. The trapezoidal optical path macro lens 4 can clearly image tiny objects at close range, meeting the needs of macro photography in specific scenarios. Light, after refraction and focusing by the lens, is projected onto the CMOS 2. The CMOS 2 converts the light signal into an electrical signal, while the CMOS substrate 1 provides a stable working environment and circuit connection for the CMOS 2, ensuring effective transmission and processing of the electrical signal, ultimately forming image data that can be subsequently analyzed, stored, or displayed. A miniature thermoelectric cooler (TEC) is integrated between the low-light image intensifier 6 and the trapezoidal optical path macro lens 4, with a temperature control accuracy of ±0.5℃. During operation, the miniature thermoelectric cooler actively regulates the temperature of key components, preventing performance degradation due to temperature changes, ensuring that the low-light image intensifier 6 and the trapezoidal optical path macro lens 4 are always in optimal working condition, maintaining imaging stability and accuracy, and guaranteeing continuous output of high-quality images under different ambient temperatures.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A macro lens low-light imaging device, comprising a CMOS substrate (1), characterized in that: The CMOS base plate (1) is fixedly connected to the top of the CMOS (2), the top of the CMOS (2) is provided with a trapezoidal optical path macro lens (4), the outside of the trapezoidal optical path macro lens (4) is provided with a high refractive index optical adhesive filler (3), the top of the high refractive index optical adhesive filler (3) is provided with an optical fiber panel (5), the top of the optical fiber panel (5) is fixedly connected with a low light image intensifier (6), and the top of the low light image intensifier (6) is fixedly connected with an autofocus optical lens (7).

2. The macro lens low-light imaging device according to claim 1, characterized in that: The low-light image intensifier (6) adopts a third-generation image intensifier with a working sensitivity of 5×10-4 lx and is equipped with a piezoelectric ceramic focusing mechanism with a focusing accuracy of ±2um.

3. The macro lens low-light imaging device according to claim 1, characterized in that: The high refractive index optical adhesive filler (3) is a customized high refractive index optical adhesive with a refractive index of 1.78, which realizes zero-gap coupling between the fiber optic panel (5) and the trapezoidal optical path macro lens (4), and increases the light transmittance to 98.5%.

4. A macro lens low-light imaging device according to claim 1, characterized in that: The fiber optic panel (5) is a trapezoidal fiber optic plate. One end of the fiber optic panel (5) has a larger area than the other end, so that the light output by the low-light image intensifier (6) can be efficiently transmitted to a sensor with a smaller image size.

5. A macro lens low-light imaging device according to claim 1, characterized in that: The micro-light image intensifier (6) and the trapezoidal optical path macro lens (4) integrate a micro thermoelectric cooler (TEC) with a temperature control accuracy of ±0.5℃.

Images