Long-wave infrared manually-adjusted lens

Abstract

The utility model belongs to the technical field of optical lenses, and particularly relates to a long-wave infrared manually-adjusted lens, which comprises a lens cover, a fixed group, a hand wheel, an adapter and a focusing lens group, the focusing lens group comprises a focusing lens seat, a second lens and a second pressing ring, the second lens is mounted in the focusing lens seat and is pressed by the second pressing ring, and the second pressing ring is in threaded connection with the focusing lens seat; the fixing group comprises a main lens barrel, a first lens and a first pressing ring, the first lens is installed in the main lens barrel, a sealing ring III is placed on the inner wall of the main lens barrel and is fixed by the first pressing ring, the first pressing ring is in threaded connection with the main lens barrel, and the focusing lens group is installed in the main lens barrel. A quick focusing function is realized through a multi-head thread; the optical module is small in number of structural parts, simple and compact in structural design, reasonable in design and beneficial to installation, and further has the advantages of being high in optical performance, small in size, high in precision, resistant to impact and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical lenses, and in particular relates to a long-wave infrared hand-adjustable lens. Background Art

[0002] Optical lenses are essential components in machine vision systems, which directly affect the quality of imaging and the implementation and effect of algorithms. Optical lenses can be divided into short-focus lenses, medium-focus lenses, and long-focus lenses based on focal length. They can be divided into wide-angle, standard, and telephoto lenses based on field of view. They can be divided into fixed aperture fixed-focus lenses, manual aperture fixed-focus lenses, automatic aperture fixed-focus lenses, manual zoom lenses, automatic zoom lenses, automatic aperture electric zoom lenses, and electric three-variable (aperture, focal length, and focus are all variable) lenses based on structure. With the continuous advancement of science and technology and the continuous development of society, optical imaging lenses have also developed rapidly in recent years, including long-wave infrared manual lenses.

[0003] In actual use, the traditional long-wave infrared manual adjustment lens has a large internal structure, which makes it inconvenient to use. In addition, the sealing level of the long-wave infrared manual adjustment lens is insufficient, which is not conducive to its imaging and long-term application, and its practicality is poor.

[0004] Therefore, it is necessary to propose a new long-wave infrared manual adjustment lens to effectively improve the above problems. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the utility model provides a long-wave infrared manual adjustment lens, which has the characteristics of small size, easy use, sealing level up to IP67, strong sealing performance, clear imaging in bad weather and extreme natural environment, and high reliability and stability.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long-wave infrared manual adjustment lens, comprising a lens cover, a fixing group, a hand wheel, an adapter and a focusing lens group; the focusing lens group comprises a focusing lens seat, a second lens and a second pressing ring, the second lens is installed in the focusing lens seat and is pressed by the second pressing ring, wherein the second pressing ring is connected to the focusing lens seat by a thread; the fixing group comprises a main lens barrel, a first lens and a first pressing ring, the first lens is installed in the main lens barrel, a sealing ring III is placed on the inner wall of the main lens barrel and is fixed by the first pressing ring, the first pressing ring is connected to the main lens barrel by a thread, and the focusing lens group is installed in the main lens barrel; the adapter is arranged on one side of the main lens barrel, and the outer walls of the main lens barrel and the adapter are respectively installed with sealing rings I and II, the hand wheel is installed on the side of the main lens barrel, wherein the hand wheel is connected to the focusing lens seat by a thread.

[0007] As a preferred technical solution of the long-wave infrared manual adjustment lens of the utility model, the lens cover is installed on the outside of the main lens barrel, and the lens cover and the adapter are fixed with screws.

[0008] As a preferred technical solution for a long-wave infrared manual-adjustable lens of the utility model, the main lens barrel has three linear grooves, the focusing lens seat has three protrusions, the linear grooves of the main lens barrel cooperate with the protrusions of the focusing lens seat, and the main lens barrel and the focusing lens seat cooperate tightly.

[0009] As a preferred technical solution for the long-wave infrared hand-adjustable lens of the utility model, the size of the screw is screw M1.6×5.

[0010] Compared with the prior art, the utility model has the following beneficial effects: when in use, the utility model can realize the function of fast focusing through the multi-thread; the utility model has a small number of structural parts, a simple and compact structural design, a reasonable design and is easy to install, and it also has the advantages of high optical performance, small size, high precision, impact resistance, etc.

[0011] Its sealing level can reach IP67, and it can be used in special harsh natural environments. At the same time, it can perform imaging at night or in poor lighting conditions without additional light sources. It can ensure clear imaging in the temperature range of -40℃ to 60℃. It is very practical and efficient for users, and has high reliability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 The utility model is a schematic structural diagram of the cross section of the long-wave infrared manual adjustment lens.

[0014] In the figure: 1. Lens cover; 2. Main lens barrel; 3. Sealing ring I; 4. Focusing lens mount; 5. Sealing ring II; 6. Adapter; 7. First pressure ring; 8. Sealing ring III; 9. First lens; 10. Hand wheel; 11. Second pressure ring; 12. Second lens; 13. Screws. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0016] See also Figure 1 The utility model provides the following technical solutions: a long-wave infrared manual adjustment lens (i.e. a long-wave infrared manual adjustment lens structure), comprising:

[0017] Lens cover 1, fixing group (including main lens barrel 2, first lens 9 and first pressing ring 7), hand wheel 10, adapter 6 and focusing lens group (including focusing lens holder 4, second lens 12 and second pressing ring 11).

[0018] The first step is to install the focusing lens group, install the second lens 12 in the focusing lens holder 4, and press it with the second pressing ring 11, and the second pressing ring 11 is connected to the focusing lens holder 4 through threads to form a focusing lens group;

[0019] The second step is to install the fixing group, install the first lens 9 in the main lens barrel 2, and place the sealing ring III 8 on the inner wall of the main lens barrel 2 (that is, the sealing ring III 8 is placed on the inner wall of the main lens barrel 2), and use the first pressing ring 7 to fix it. The first pressing ring 7 is connected to the main lens barrel 2 by threads to form a fixing group.

[0020] The third step is to assemble the lens body. The adapter 6 is arranged on one side of the main lens barrel 2. First, the sealing ring I3 and the sealing ring II5 are respectively installed on the outer walls of the main lens barrel 2 and the adapter 6 (that is, the outer walls of the main lens barrel 2 and the adapter 6 are respectively installed with the sealing ring I3 and the sealing ring II5), and then the focusing lens group installed in the first step is installed in the main lens barrel 2, and then the hand wheel 10 is installed on the main lens barrel 2 (the hand wheel 10 is installed on the side of the main lens barrel 2), wherein the hand wheel 10 and the focusing lens seat 4 are connected by threads, the adapter 6 is installed on the main lens barrel 2, the lens cover 1 is installed on the main lens barrel 2 (the lens cover 1 is installed on the outside of the main lens barrel 2), and the screw 13 (in this embodiment, the size of the screw 13 is the screw M1.6×5) is used to fix the lens cover 1 and the adapter 6. At this point, the installation of the long-wave infrared manual adjustment lens is completed.

[0021] Specifically:

[0022] The utility model long-wave infrared hand-adjustable lens has the following features: its sealing can reach IP67 and has stable focusing;

[0023] Furthermore, the sealed IP67 design: the sealing ring III8 can play a sealing role at the first lens 9, the sealing ring I3 and the sealing ring II5 can play a sealing role on the outside of the lens, and its sealing level can reach IP67, and it can be used in special harsh natural environments; at the same time, at night or in poor lighting conditions, imaging can be performed without additional light sources, and clear imaging can be guaranteed in the temperature range of -40℃ ~ 60℃, which is very practical and efficient for users, and has high reliability and stability.

[0024] Stable focusing design: the main lens barrel 2 has three linear grooves, and the focusing lens holder 4 has three protrusions. The linear grooves of the main lens barrel 2 match the protrusions of the focusing lens holder 4, and the main lens barrel 2 and the focusing lens holder 4 match tightly, which can ensure that the focusing lens holder 4 performs stable axial linear motion in the main lens barrel 2;

[0025] At the same time, there are external threads on the three protrusions of the focusing lens seat 4, and there are internal threads in the hand wheel 10. The outer wall of the hand wheel 10 is designed with anti-skid grooves, which can play a good anti-skid effect;

[0026] By rotating the hand wheel 10, the focusing lens holder 4 is driven to make axial linear motion in the main lens barrel 2, so as to achieve the function of focusing the infrared hand-adjustable lens. The structure is simple, easy to operate, and the function of fast focusing is realized through multiple threads; the number of its structural parts is small, the structural design is simple and compact, the design is reasonable and easy to install, and it also has the advantages of high optical performance, small size, high precision, impact resistance, etc.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A long-wave infrared manual lens, It is characterized in that It comprises a lens cover (1), a fixing group, a hand wheel (10), an adapter (6) and a focusing lens group; The focusing lens assembly comprises a focusing lens seat (4), a second lens (12) and a second pressing ring (11), wherein the second lens (12) is mounted in the focusing lens seat (4) and is pressed by the second pressing ring (11), wherein the second pressing ring (11) is connected to the focusing lens seat (4) via a threaded connection; The fixing group comprises a main lens barrel (2), a first lens (9) and a first pressing ring (7); the first lens (9) is installed in the main lens barrel (2); a sealing ring III (8) is placed on the inner wall of the main lens barrel (2) and is fixed by the first pressing ring (7); the first pressing ring (7) is connected to the main lens barrel (2) via a thread; and the focusing lens group is installed in the main lens barrel (2); The adapter (6) is arranged on one side of the main lens barrel (2), and a sealing ring I (3) and a sealing ring II (5) are respectively installed on the outer walls of the main lens barrel (2) and the adapter (6). The hand wheel (10) is installed on the side of the main lens barrel (2), and the hand wheel (10) is connected to the focusing lens seat (4) through a threaded connection.

2. A long-wave infrared manual adjustment lens according to claim 1, Features: The lens cover (1) is mounted on the outside of the main lens barrel (2), and the lens cover (1) and the adapter (6) are fixed using screws (13).

3. A long-wave infrared manual adjustment lens according to claim 2, Features: The main lens barrel (2) has three linear grooves, the focusing lens seat (4) has three protrusions, the linear grooves of the main lens barrel (2) match with the protrusions of the focusing lens seat (4), and the main lens barrel (2) and the focusing lens seat (4) match tightly.

4. The long-wave infrared manual adjustment lens according to claim 3, Features: The size of the screw (13) is screw M1.6×5.

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