CN212781471U - Overlong object distance telecentric lens - Google Patents

Abstract

The utility model discloses a overlength object distance telecentric lens, including the lens cone and the lens that sets up in the lens cone, the ventilation hole has been seted up on the lens cone is close to the lateral wall of lens, the inside dismantlement formula of lens cone is connected with the annular slab, elastic connection has the sprue with ventilation hole matched with on the lateral wall of annular slab, the utility model discloses be convenient for realize the ventilation cooling to the lens.

Description

Overlong object distance telecentric lens

Technical Field

The utility model relates to a camera lens technical field specifically is an overlength object distance telecentric lens.

Background

The telecentric lens is designed mainly for correcting the parallax of the traditional industrial lens, and can ensure that the magnification of the obtained image is unchanged within a certain object distance range, which is very important application to the condition that the measured object is not on the same object plane.

At present, telecentric lens adopts the coaxial light source of half mirror cooperation of semitransmission, and coaxial light source sets up in the lens cone is outside, and the logical unthreaded hole of seting up on through the lens cone stretches into in the lens cone, and the inconvenient realization of the current overlength object distance telecentric lens is to the ventilation cooling effect of lens, also be convenient for get rid of when having fog on the lens for a long time, influences the use of camera lens.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an overlength object distance telecentric lens to propose the inconvenient ventilation cooling effect that realizes the lens of current overlength object distance telecentric lens among the above-mentioned background art, also be convenient for get rid of when having fog for a long time on the lens, influence the problem of the use of camera lens.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an overlength object distance telecentric lens, includes the lens cone and the lens that sets up in the lens cone, the ventilation hole has been seted up on the lens cone is close to the lateral wall of lens, the inside dismantlement formula of lens cone is connected with the annular slab, elastic connection has the sprue with ventilation hole matched with on the lateral wall of annular slab.

As a further aspect of the present invention: the lens cone comprises an inner protection plate, a heat insulation plate and an outer protection plate, wherein the inner side wall and the outer side wall of the heat insulation plate are fixedly connected with the inner protection plate and the outer protection plate respectively, and the heat insulation plate achieves the heat insulation protection effect on the inside of the lens cone.

As a further aspect of the present invention: the annular plate is fixedly connected with an inserting plate, one end of the inserting plate is inserted on the lens cone, when the annular plate needs to be installed inside the lens cone, a worker inserts the inserting plate on the lens cone from top to bottom, and the annular plate is installed inside the lens cone.

As a further aspect of the present invention: the annular plate and the inserting plate are fixedly connected through a connecting rod.

As a further aspect of the present invention: the top end face of the lens cone is downwards provided with a slot for inserting the inserting plate.

As a further aspect of the present invention: the both ends of inserting the board all fixedly connected with slot matched with cushion, the material of cushion is elastic rubber material, when cushion elasticity laminating is in the slot, even if be convenient for insert the board and install in the slot.

As a further aspect of the present invention: the outer side wall of the annular plate is provided with a containing groove, a limiting plate is movably connected in the containing groove, and the limiting plate is fixedly connected with the blocking block.

As a further aspect of the present invention: fixedly connected with spring in the limiting plate, the one end fixed connection of spring is on accomodating the groove, when needs are dismantled annular plate from the lens cone, and the staff manually promotes the sprue, realizes the removal of sprue, when the sprue is located and accomodates the inslot, even if be convenient for dismantle annular plate from the lens cone.

Compared with the prior art, the beneficial effects of the utility model are that: when the annular plate is required to be detached from the lens cone, the staff manually pushes the blocking block to realize the movement of the blocking block, and when the blocking block is positioned in the accommodating groove, the annular plate is conveniently detached from the lens cone.

And then the annular plate is pulled upwards manually, so that one end of the inserting plate is taken out of the lens barrel, the annular plate is convenient to take out of the lens barrel, and the lens is ventilated and radiated.

The ultralong object distance telecentric lens is convenient for realizing ventilation and heat dissipation of the lens.

Drawings

FIG. 1 is a schematic diagram of an ultra-long object distance telecentric lens;

FIG. 2 is a cross-sectional view of a lens barrel in an ultra-long object distance telecentric lens;

FIG. 3 is a schematic view of the connection between the lens barrel and the annular plate in the telecentric lens with ultra-long object distance;

FIG. 4 is a top view of a lens barrel in an ultra-long object distance telecentric lens;

FIG. 5 is a schematic diagram of the connection between an insert plate and an elastic pad in an ultra-long object distance telecentric lens;

FIG. 6 is a cross-sectional view of an annular plate in an ultra-long object distance telecentric lens;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

in the figure: 1. a lens barrel; 2. a lens; 3. a vent hole; 4. an annular plate; 5. blocking; 6. an inner protection plate; 7. a heat insulation plate; 8. an outer protective plate; 9. inserting the board; 10. a connecting rod; 11. a slot; 12. an elastic pad; 13. a receiving groove; 14. a limiting plate; 15. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, in an embodiment of the present invention, an ultra-long object distance telecentric lens includes a lens barrel 1 and a lens 2 disposed in the lens barrel 1, a vent hole 3 is disposed on a side wall of the lens barrel 1 close to the lens 2, an annular plate 4 is detachably connected to an inside of the lens barrel 1, and a blocking block 5 matched with the vent hole 3 is elastically connected to an outer side wall of the annular plate 4.

The lens cone 1 comprises an inner protection plate 6, a heat insulation plate 7 and an outer protection plate 8, the inner side wall and the outer side wall of the heat insulation plate 7 are fixedly connected with the inner protection plate 6 and the outer protection plate 8 respectively, and the heat insulation plate 7 achieves the heat insulation protection effect on the inside of the lens cone 1.

The annular plate 4 is fixedly connected with an inserting plate 9, one end of the inserting plate 9 is inserted on the lens barrel 1, when the annular plate 4 needs to be installed inside the lens barrel 1, a worker inserts the inserting plate 9 on the lens barrel 1 from top to bottom, and the annular plate 4 is installed in the lens barrel 1.

The annular plate 4 and the inserting plate 9 are fixedly connected through a connecting rod 10.

The top end face of the lens barrel 1 is downward provided with a slot 11 for inserting the insertion plate 9.

The two ends of the inserting plate 9 are fixedly connected with elastic pads 12 matched with the inserting grooves 11, the elastic pads 12 are made of elastic rubber materials, and when the elastic pads 12 are elastically attached to the inserting grooves 11, the inserting plate 9 is installed in the inserting grooves 11.

The outer side wall of the annular plate 4 is provided with a containing groove 13, a limiting plate 14 is movably connected in the containing groove 13, and the limiting plate 14 is fixedly connected with the blocking block 5.

Fixedly connected with spring 15 in the limiting plate 14, spring 15's one end fixed connection is on accomodating groove 13, and when needs are dismantled annular plate 4 from lens cone 1, the staff manually promotes sprue 5, realizes sprue 5's removal, when sprue 5 is located accomodating groove 13, even if be convenient for dismantle annular plate 4 from lens cone 1.

The utility model discloses when using, when needs dismantle annular plate 4 from lens cone 1, the manual jam 5 that promotes of staff realizes the removal of jam 5, when jam 5 is located accomodates the groove 13, even if be convenient for dismantle annular plate 4 from lens cone 1.

Then, the annular plate 4 is manually pulled upwards, so that one end of the insertion plate 9 is taken out of the lens barrel 1, and the annular plate 4 is convenient to take out of the lens barrel 1, namely, the lens 1 is ventilated and radiated.

"fixedly connected" as described in the present invention means that two parts connected to each other are fixed together, typically by welding, screwing or gluing; "rotationally coupled" means that two components are coupled together and capable of relative motion.

Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.

Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (8)

1. The utility model provides a overlength object distance telecentric lens, includes lens cone (1) and lens (2) that set up in lens cone (1), its characterized in that, ventilation hole (3) have been seted up on lens cone (1) is close to the lateral wall of lens (2), the inside dismantlement formula of lens cone (1) is connected with annular plate (4), elastic connection has on the lateral wall of annular plate (4) and ventilation hole (3) matched with sprue (5).

2. A telecentric lens with an ultra-long object distance according to claim 1, wherein the lens barrel (1) comprises an inner protection plate (6), a thermal insulation plate (7) and an outer protection plate (8), and the inner and outer side walls of the thermal insulation plate (7) are fixedly connected with the inner protection plate (6) and the outer protection plate (8), respectively.

3. A telecentric lens with an ultra-long object distance according to claim 1, wherein an inserting plate (9) is fixedly connected to the annular plate (4), and one end of the inserting plate (9) is inserted into the lens barrel (1).

4. A telecentric lens with an ultra-long object distance according to claim 3, characterized in that the annular plate (4) and the interposing plate (9) are fixedly connected through a connecting rod (10).

5. A telecentric lens with an ultra-long object distance according to claim 3, wherein the top end surface of the lens barrel (1) faces downwards and is provided with a slot (11) for inserting the insertion plate (9).

6. A telecentric lens with an ultra-long object distance according to claim 5, characterized in that the two ends of the insertion plate (9) are fixedly connected with elastic pads (12) matched with the slots (11).

7. A telecentric lens with an ultra-long object distance according to claim 1, wherein the outer side wall of the annular plate (4) is provided with a receiving groove (13), a limiting plate (14) is movably connected in the receiving groove (13), and the limiting plate (14) is fixedly connected with the blocking block (5).

8. A telecentric lens according to claim 7, wherein a spring (15) is fixedly connected in the limiting plate (14), and one end of the spring (15) is fixedly connected to the receiving groove (13).

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