Short wave infrared manual lensTechnical Field
The utility model belongs to the technical field of optical lenses, and particularly relates to a short-wave infrared manual lens.
Background
The optical lens is an indispensable component in the machine vision system, and directly affects the quality of imaging and the realization and effect of an algorithm. The optical lens can be divided into a short-focus lens and a medium-focus lens from the focal length, a long-focus lens, a wide-angle lens, a standard long-focus lens from the size of a field of view, a fixed aperture fixed focus lens, a manual aperture fixed focus lens, an automatic aperture fixed focus lens, a manual zoom lens, an automatic aperture electric zoom lens, an electric three-variable (aperture, focal length and focusing are all variable) lens and the like from the structure;
Compared with other wavelength detection, the short-wave infrared hand-tuning lens has the capability of similar visible light reflection imaging resolution details, invisible light detection capability, vivid irreplaceable imaging advantages (high recognition, all-weather adaptation, low-light night vision, high concealment), can be widely applied to the fields of night vision, airborne warning, reconnaissance and monitoring, gas measurement, remote sensing, infrared guidance, photoelectric countermeasure and the like, but the traditional short-wave infrared hand-tuning lens is complicated in structural design, unfavorable for convenient use and poor in practicality when in actual use, and improves the production difficulty.
Therefore, it is necessary to provide a new short-wave infrared manual lens, so as to effectively solve the above problems.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides the shortwave infrared manual lens, which has the characteristics of reducing the production difficulty, reducing the manufacturing cost, along with simple and compact structural design, reasonable design and being beneficial to installation.
In order to achieve the above purpose, the short wave infrared manual lens comprises a fixed group, a focusing lens group and a lens diaphragm, wherein the fixed group comprises a front fixed group, a fourth lens group and a rear fixed group, the fourth lens group and the rear fixed group are arranged beside the front fixed group, and the focusing lens group and the lens diaphragm are arranged in the fixed group.
As a preferred technical scheme of the short-wave infrared manual lens, the front fixed group comprises a head group lens barrel, a second space ring is arranged in the head group lens barrel, a second lens, a first space ring and a first lens are also arranged in the head group lens barrel, the first space ring is arranged between the first lens and the second lens, a head group sealing ring is arranged on the inner wall of the head group lens barrel, and one side in the head group lens barrel is connected with a first pressing ring through threads.
As a preferable technical scheme of the short-wave infrared manual lens, the fourth lens group comprises a fourth lens and a fourth lens barrel, the focusing lens group comprises a third lens and a focusing lens seat, the fourth lens is arranged in the fourth lens barrel, the third pressing ring and the fourth lens are fixed on the fourth lens barrel through screws, and one side of the focusing lens seat is connected with the second pressing ring through threads, so that the third lens is fixed in the focusing lens seat.
As an optimal technical scheme of the short-wave infrared manual lens, the focusing lens base is connected with the fourth lens barrel through threads, and pins are arranged in limiting holes formed in the focusing lens base.
As an optimized technical scheme of the short-wave infrared manual lens, one side of the fourth lens barrel is connected with a diaphragm pressing ring through a threaded connection, a lens diaphragm is fixed in the fourth lens barrel, a screw is connected between the fourth lens barrel and the head group barrel, a sealing ring is sleeved on the outer wall of the head group barrel, a focusing hand wheel is mounted on the fourth lens barrel, the pin on the focusing lens seat is mounted at the position of a straight barrel groove formed in the inner side of the focusing hand wheel, a preformed hole is formed in the focusing hand wheel, a focusing guide pin is connected to the preformed hole on the focusing hand wheel through a threaded connection, and the focusing guide pin plays a guiding role on the focusing lens seat.
As an optimal technical scheme of the short-wave infrared manual lens, a hand wheel retainer ring is fixed between the focusing hand wheel and the fourth lens barrel through screws, a diaphragm hand wheel is fixed on the outer side of the hand wheel retainer ring, a baffle rod arranged on a lens diaphragm is arranged at a position of a straight line groove arranged on the inner side of the diaphragm hand wheel, a preformed hole is formed in the diaphragm hand wheel, a diaphragm guide pin is screwed at the preformed hole of the diaphragm hand wheel, and the diaphragm guide pin plays a guiding role on the lens diaphragm.
According to the preferred technical scheme of the short-wave infrared manual lens, the rear fixing group comprises a main lens barrel, a diaphragm hand wheel antifriction gasket is arranged on the inner side of the diaphragm hand wheel, anti-slip grooves are reserved on the outer walls of the focusing hand wheel and the diaphragm hand wheel, the main lens barrel is fixed between the diaphragm hand wheel and the fourth lens barrel through screws, a sixth lens, a fourth spacer ring and a fifth lens are sequentially arranged in the main lens barrel from right to left, a fourth pressing ring is fixed in the main lens barrel through threads, a sealing ring sleeve is sleeved on the outer wall of the main lens barrel, and a third spacer ring is arranged on the fourth lens barrel.
Compared with the prior art, the utility model has the beneficial effects that when in use, the function of the short-wave infrared lens is realized through six lenses, the production difficulty is reduced, the manufacturing cost is reduced, the structural design is simple and compact, the design is reasonable, the installation is facilitated, the utility model also has the advantages of high optical performance, large aperture, small volume, high precision, impact resistance and the like, and the imaging is clear in severe weather and extreme natural environment, and has very high usability and operability and strong practicability.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of the structure of the shaft side of the present utility model;
Fig. 2 is a schematic cross-sectional view of the present utility model.
1, A head group lens barrel; 2, a first clamping ring, 3, a head group sealing ring, 4, a first lens, 5, a first spacing ring, 6, a second lens, 7, a second spacing ring, 8, a fourth lens, 9, a fourth lens barrel, 10, a third clamping ring, 11, a focusing lens seat, 12, a third lens, 13, a second clamping ring, 14, a lens diaphragm, 15, a diaphragm clamping ring, 16, a hand wheel retainer ring, 17, a focusing hand wheel, 18, a diaphragm hand wheel, 19, a diaphragm hand wheel antifriction gasket, 20, a focusing guide nail, 21, a diaphragm guide nail, 22, a main lens barrel, 23, a third spacing ring, 24, a fifth lens, 25, a sixth lens, 26, a fourth clamping ring, 27, a fourth spacing ring, 28, a screw, 29 and a pin.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1 and 2, the present utility model provides the following technical solutions:
The shortwave infrared manual lens structure comprises a fixed group, a focusing lens group and a lens diaphragm 14, wherein the fixed group comprises a front fixed group, a fourth lens group and a rear fixed group, the fourth lens group and the rear fixed group are arranged beside the front fixed group, and the focusing lens group and the lens diaphragm 14 are arranged in the fixed group.
The front fixed group comprises a head group lens barrel 1, a second spacer ring 7 is firstly arranged in the head group lens barrel 1, a second lens 6, a first spacer ring 5 and a first lens 4 are sequentially arranged in the head group lens barrel 1, the first spacer ring 5 is arranged between the first lens 4 and the second lens 6, a head group sealing ring 3 is arranged (arranged) on the inner wall of the head group lens barrel 1, wherein the head group sealing ring 3 can seal the whole device, prevent dust, water vapor and the like from entering the device and protect parts in the device;
The fourth lens group comprises a fourth lens 8 and a fourth lens barrel 9, the focusing lens group comprises a third lens 12 and a focusing lens holder 11, the fourth lens 8 is arranged in the fourth lens barrel 9, the third pressing ring 10 and the fourth lens 8 are fixed on the fourth lens barrel 9 through screws 28, the second pressing ring 13 and the focusing lens holder 11 are connected through threads (namely, one side of the focusing lens holder 11 is connected with the second pressing ring 13 through threads), the third lens 12 is fixed in the focusing lens holder 11, the focusing lens holder 11 and the fourth lens barrel 9 are connected through threads, the focusing lens holder 11 is fixed in the fourth lens barrel 9, a pin 29 is arranged in a limiting hole formed in the focusing lens holder 11, the pin 29 is connected with the focusing lens holder 11 through threads, and the pin 29 is used for fixing the relative position of the focusing lens holder 11, so that the focusing lens group can be arranged;
The lens diaphragm 14 is fixed in the fourth lens barrel 9 through threaded connection between the diaphragm pressing ring 15 and the fourth lens barrel 9 (one side of the fourth lens barrel 9 is connected with the diaphragm pressing ring 15 through threaded connection), the fourth lens barrel 9 and the head group barrel 1 are fixedly connected through a screw 28 (namely, a screw 28 is connected between the fourth lens barrel 9 and the head group barrel 1), the pin 29 and the focusing lens seat 11 are connected with a preformed hole on the focusing lens seat 11 through threads, a sealing ring is sleeved on the outer wall of the head group barrel 1, the focusing hand wheel 17 is arranged on the fourth lens barrel 9, the pin 29 on the focusing lens seat 11 is arranged at the position of a straight cylinder groove formed in the inner side of the focusing hand wheel 17, the focusing guide pin 20 and the focusing hand wheel 17 are connected to the preformed hole on the focusing hand wheel 17 through threads (namely, the preformed hole on the focusing hand wheel 17 is connected with the guide pin 20 through threads), the guide pin 20 plays a guiding role on the focusing lens seat 11, in the use process of the guide pin, the guide pin 20 is adjusted to rotate, the lens seat 17 drives the lens seat 11 to move along the axial direction of the lens seat 11, and the lens seat 11 is deformed along the same direction, and the temperature of the lens seat is different from the axial direction, thereby the lens seat 11 is deformed along the axial direction, and the lens is deformed along the same as the axial direction, the lens seat is different;
The sealing ring is sleeved on the outer wall of the hand wheel retainer ring 16, the hand wheel retainer ring 16 is fixed between the focusing hand wheel 17 and the fourth lens barrel 9 through a screw 28, the diaphragm hand wheel 18 is fixed on the outer side of the hand wheel retainer ring 16, a baffle rod arranged on the lens diaphragm 14 is arranged at the position of a linear groove arranged on the inner side of the diaphragm hand wheel 18, a diaphragm guide pin 21 and the diaphragm hand wheel 18 are connected to a preformed hole on the diaphragm hand wheel 18 through threads (namely, the preformed hole on the diaphragm hand wheel 18 is provided with the diaphragm guide pin 21 through threads, the diaphragm guide pin 21 is arranged at the position of the linear groove on the inner side of the hand wheel retainer ring 16, the diaphragm guide pin 21 plays a guiding role on the lens diaphragm 14, the position of the diaphragm hand wheel 18 is regulated, and the knob of the lens diaphragm 14 is driven to rotate, so that the opening size of the lens diaphragm 14 is regulated, and the beam diameter is regulated;
The rear fixed group comprises a main lens barrel 22, a diaphragm hand wheel antifriction gasket 19 is arranged on the inner side of a diaphragm hand wheel 18, and the diaphragm hand wheel antifriction gasket 19 can reduce the friction coefficient between the contact surfaces of the main lens barrel 22 and the diaphragm hand wheel 18 and reduce friction abnormal sound generated when the diaphragm hand wheel 18 rotates in the rotation process of the diaphragm hand wheel 18;
The sixth lens 25, the fourth spacing ring 27 and the fifth lens 24 are sequentially arranged in the main lens barrel 22 (the sixth lens 25, the fourth spacing ring 27 and the fifth lens 24 are sequentially arranged in the main lens barrel 22 from right to left), the fourth pressing ring 26 and the main lens barrel 22 are fixed through threads (namely, the fourth pressing ring 26 is fixed in the main lens barrel 22 through threads), the sealing ring is sleeved on the outer wall of the main lens barrel 22, the third spacing ring 23 is arranged on the fourth lens barrel 9, the main lens barrel 22 is fixed between the diaphragm hand wheel 18 and the fourth lens barrel 9 through screws 28, and then the assembly of a rear fixed group is completed, and the installation of the short-wave infrared lens is completed.
The short wave infrared hand-adjusting lens can be used in a special severe natural environment, imaging can be performed without an additional light source under the condition of night or poor illumination conditions, clear imaging can be ensured at the temperature range of-40 ℃ to 60 ℃, and the short wave infrared hand-adjusting lens is very practical and efficient for a user.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.