Optical lens barrel with adjustable transparency
By using a liquid crystal display and control module in the optical barrel, the discomfort caused by strong light and the problem of discontinuous light transmittance adjustment are solved, realizing continuous stepless adjustment of light transmittance, simplifying the structure and reducing costs.
Patent Information
- Application Number
- CN202520795243.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-25
AI Technical Summary
Existing optical tubes are prone to causing discomfort and affecting imaging when used in strong light, and the light transmittance adjustment is not continuous, resulting in complex structure and high cost.
By using an LCD screen and control module, the transparency of the LCD is controlled by changing the voltage to achieve continuous stepless adjustment of light transmittance, replacing the traditional filter.
It achieves continuous stepless adjustment of the light transmittance of the optical tube, simplifies the structure and reduces costs, while maintaining a comfortable observation environment.
Smart Images
Figure CN223926733U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to optical devices, and in particular to an optical lens barrel with adjustable transparency. Background Technology
[0002] The optical tube is the core component of an optical instrument. It mainly consists of the tube body, whose primary functions are to protect internal optical elements, isolate them from external environmental interference (such as dust and humidity), and maintain optical path alignment; the objective lens system, responsible for collecting and refracting light to the focal point; the eyepiece system, composed of a set of lenses, which magnifies the intermediate image formed by the objective lens; the focusing mechanism, which moves the eyepiece or objective lens via a knob or motor; and adjusting the distance between the objective and eyepiece to ensure the intermediate image falls precisely on the eyepiece's focal plane. Some optical tubes also include optical path adjustment elements, such as prisms or plane mirrors, used to change the direction of incident light, shorten the tube length, and correct image orientation.
[0003] When using existing optical tubes, strong light (such as sunlight or direct light) sometimes enters the objective lens system, causing strong light to also enter the eyepiece system, which can be uncomfortable or affect the imaging effect. To solve this problem, the current approach is to add filters to the optical path, using filters with different transmittances based on experience to adjust the intensity and color of the light. This results in a complex optical tube structure, high price, and inconvenience in use. In addition, the graded design of filters with different transmittances does not allow for continuous and stepless adjustment of the transmittance of the optical tube. Utility Model Content
[0004] The purpose of this invention is to provide an optical lens barrel that does not require a filter and allows for continuous stepless adjustment of light transmittance.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An adjustable transparency optical tube includes a tube body, an objective lens system disposed at the front end of the tube body, and an eyepiece system disposed at the rear end of the tube body. At least one liquid crystal display screen and a control module are provided on the tube body. The liquid crystal display screen includes a first glass plate and a second glass plate, which are parallel to each other at a predetermined distance. Sealing edges are provided around the periphery of the first and second glass plates, forming a sealed cavity between them. A first transparent electrode is provided on the inner bottom surface of the first glass plate, and a second transparent electrode is provided on the inner bottom surface of the second glass plate. Liquid crystal is disposed within the sealed cavity. The liquid crystal is transparent when no power is applied and exhibits a scattering state when power is applied. The transparency of the liquid crystal display screen changes according to the voltage applied to the first and second transparent electrodes by the control module; the higher the applied voltage, the lower the transparency of the liquid crystal display screen.
[0007] As an improvement to the present invention, the first transparent electrode is divided into at least one separately controllable first part, and the second transparent electrode is divided into at least one separately controllable second part, wherein the first part and the second part have the same shape and area, and the first part and the second part are arranged opposite to each other.
[0008] As an improvement to the present invention, the light transmittance of the liquid crystal display screen 4 when no power is applied is greater than or equal to 80% and less than or equal to 99%.
[0009] As an improvement to the present invention, when the liquid crystal display screen is powered on, its light transmittance gradually changes from 99% to 10% as the voltage increases.
[0010] As an improvement to the present invention, a prism or a plane mirror is also provided in the lens barrel body.
[0011] As an improvement to the present invention, the present invention also includes a focusing device, which moves the eyepiece or objective lens by means of a knob or a motor.
[0012] This invention employs a structure in which at least one liquid crystal display screen and a control module are provided in the lens barrel body; the liquid crystal display screen includes a first glass plate and a second glass plate, which are arranged parallel to each other at a predetermined distance, and a sealing edge is provided around the periphery of the first and second glass plates, forming a sealed cavity between the first and second glass plates; a first transparent electrode is provided on the inner bottom surface of the first glass plate, and a second transparent electrode is provided on the inner bottom surface of the second glass plate; liquid crystal is disposed in the sealed cavity; the liquid crystal is transparent when no power is applied and scatters when power is applied; the transparency of the liquid crystal display screen changes according to the voltage applied to the first and second transparent electrodes by the control module, with the higher the applied voltage, the lower the transparency of the liquid crystal display screen. Therefore, this invention has the advantages of not requiring a filter and being able to continuously and steplessly adjust the light transmittance of the liquid crystal display screen. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model.
[0014] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model.
[0015] Figure 3 For the diagram and Figure 2 A cross-sectional view of the liquid crystal display screen.
[0016] Figure 4 for Figure 3The above-view structural diagram of the embodiment is shown. Detailed Implementation
[0017] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this embodiment, and not all embodiments.
[0018] The following is combined Figures 1-4 This application will be described in further detail.
[0019] Please see Figures 1 to 4 , Figures 1 to 4 The disclosed invention relates to an optical tube with adjustable transparency, comprising a tube body 1, an objective lens system 2 disposed at the front end of the tube body 1, and an eyepiece system 3 disposed at the rear end of the tube body 1. At least one liquid crystal display screen 4 and a control module 5 are provided on the tube body 1; the liquid crystal display screen 4 includes a first glass plate 41 and a second glass plate 42 (see...). Figure 4 The first glass plate 41 and the second glass plate 42 are arranged parallel to each other at a predetermined distance. A sealing edge 43 is provided around the periphery of the first glass plate 41 and the second glass plate 42. In this embodiment, the shape of the liquid crystal display screen 4 is circular. However, in this utility model, the liquid crystal display screen 4 is not limited and can be designed with any shape. The space between the first glass plate 41 and the second glass plate 42 forms a sealed cavity 44. A first transparent electrode 411 is provided on the inner bottom surface of the first glass plate 41, and a second transparent electrode 421 is provided on the inner bottom surface of the second glass plate 42. Liquid crystal 45 is provided in the sealed cavity 44. The liquid crystal 45 is transparent when no power is applied and is in a scattering state when power is applied. The transparency of the liquid crystal display screen 4 changes according to the voltage applied by the control module 5 to the first transparent electrode 411 and the second transparent electrode 421. The higher the applied voltage, the lower the transparency of the liquid crystal display screen 4.
[0020] In this embodiment, the liquid crystal display screen 4 can be an SK8611 liquid crystal display screen manufactured by Shenzhen SECCO Display Co., Ltd.
[0021] Preferably, at least one first portion 412, which can be individually controlled by the control module 5, is separated from the first transparent electrode 411, and at least one second portion 422, which can be individually controlled by the control module 5, is separated from the second transparent electrode 421. The first portion 412 and the second portion 422 have the same shape and area, and the first portion 412 and the second portion 422 are arranged opposite to each other (see...). Figure 4 ), Figure 4In this embodiment, the first part 412 and the second part 42 overlap and are rectangular. Of course, the first part 412 and the second part 42 are not limited in this utility model and can also be circular, triangular, etc. Applying a different voltage to the first part 412 and the second part 42 separately from their surrounding parts can change the color difference between the first part 412 and the second part 42 and the surrounding display parts. The main purpose is to make the color of the first part 412 and the second part 42 darker, close to black.
[0022] Preferably, the light transmittance of the liquid crystal display screen 4 when not powered is greater than or equal to 80% and less than or equal to 99%, which is beneficial for observation when not powered.
[0023] Preferably, when the liquid crystal display screen 4 is powered on, its light transmittance gradually changes from 99% to 10% as the voltage increases. In this case, if the entire display screen is used, it can be used as a light filter, and it is a continuously variable color filter.
[0024] Preferably, a prism or a plane mirror is also provided inside the lens barrel body 1 to change the direction of light and improve the practicality of this utility model.
[0025] Preferably, the present invention also includes a focusing device, which moves the eyepiece or objective lens by means of a knob or motor.
[0026] The at least one liquid crystal display screen 4 is selected from 1 to 3 screens; by stacking different numbers of screens, the light transmittance of the areas corresponding to the first part 412 and the second part 422 is further reduced, making the color of the areas corresponding to the first part 412 and the second part 422 closer to black.
[0027] This invention is widely applicable to use in rangefinders, cameras, telescopes, and gun sights.
[0028] The above description is only a preferred embodiment of this practice, but the scope of protection of this embodiment is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this embodiment, based on the technical solution and the inventive concept of this embodiment, should be covered within the scope of protection of this embodiment.
Claims
1. An optical tube with adjustable transparency, comprising a tube body (1), an objective lens system (2) arranged at the front end of the tube body (1), and an ocular lens system (3) arranged at the rear end of the tube body (1), characterized in that, The lens barrel body (1) is provided with at least one liquid crystal display screen (4) and a control module (5); the liquid crystal display screen (4) includes a first glass plate (41) and a second glass plate (42), the first glass plate (41) and the second glass plate (42) are arranged parallel to each other at a predetermined distance, and a sealing edge (43) is provided around the first glass plate (41) and the second glass plate (42), forming a sealed cavity (44) between the first glass plate (41) and the second glass plate (42); the inner bottom of the first glass plate (41) is... A first transparent electrode (411) is provided on the surface, and a second transparent electrode (421) is provided on the inner bottom surface of the second glass plate (42); a liquid crystal (45) is provided in the sealed cavity (44); the liquid crystal (45) is transparent when no power is applied and diffuses when power is applied; the transparency of the liquid crystal display screen (4) changes according to the voltage applied by the control module (5) to the first transparent electrode (411) and the second transparent electrode (421), and the higher the applied voltage, the lower the transparency of the liquid crystal display screen (4).
2. The adjustable transparency optical barrel of claim 1, wherein, The first transparent electrode (411) is divided into at least one controllable first part, and the second transparent electrode (421) is divided into at least one controllable second part. The first part and the second part have the same shape and area, and the first part and the second part are arranged opposite to each other.
3. The adjustable transparency optical barrel of claim 1 or 2, wherein, The transmittance of the liquid crystal display screen (4) when no power is applied is greater than or equal to 80% and less than or equal to 99%.
4. The adjustable transparency optical barrel of claim 1 or 2, wherein, When the liquid crystal display screen (4) is powered on, its light transmittance gradually changes from 99% to 10% as the voltage increases.
5. The adjustable transparency optical lens barrel according to claim 1 or 2, characterized in that, A prism or a plane mirror is also provided inside the main body of the mirror tube (1).
6. The adjustable transparency optical lens barrel according to claim 1 or 2, characterized in that, It also includes a focusing device, which moves the eyepiece or objective lens via a knob or motor.
7. The adjustable transparency optical lens barrel according to claim 1 or 2, characterized in that, The at least one liquid crystal display screen (4) is selected from 1 to 3 screens.