CN217587832U

CN217587832U - Mechanical optical shutter

Info

Publication number: CN217587832U
Application number: CN202220983933.7U
Authority: CN
Inventors: 黄亚兰
Original assignee: Chengdu Keshengda Optoelectronics Technology Co ltd
Current assignee: Chengdu Keshengda Optoelectronics Technology Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-10-14
Anticipated expiration: 2032-04-26

Abstract

The utility model provides a mechanical optical shutter, which comprises a shutter body, a driving mechanism and a shading component, wherein the shutter body is provided with a light through hole, and the driving mechanism and the shading component are both arranged on the shutter body; the driving mechanism comprises an electromagnet, a first pin, a second pin and a swing rod, the swing rod is arranged on one side of the light through hole, and the electromagnet is arranged on one side of the swing rod and connected with the swing rod; the first pin is arranged on the shutter body, and one end of the oscillating bar is connected with the first pin and can rotate around the first pin; the other end installation second pin of pendulum rod, the shading subassembly includes: the shutter comprises a first shutter body, a second shutter body, a first pin and a second pin, wherein the second pin simultaneously passes through the first shutter body and the second shutter body to be connected with the shutter body; the electromagnet can drive the first shading sheet and the second shading sheet to move in an opposite direction or in a deviating direction when being electrified or deenergized, so that the light through hole is opened and shielded.

Description

Mechanical optical shutter

Technical Field

The utility model relates to a make a video recording, laser, photoelectronic field particularly, relate to a mechanical light shutter.

Background

In an optical system, a mechanical optical shutter is a key device for controlling exposure time and switching on and off of a laser beam. The laser beam has high directivity, and some laser beams have high heat radiation characteristics. Traditional camera shutter uses the plastic blade usually, by a plurality of blades combined action control light beam break-make, the form is comparatively fixed, when laser irradiation, the blade is the thermal deformation that is heated very easily, leads to life to shorten even unable the use greatly.

The traditional mechanical optical shutter is complex in structure and often needs a motor, a lever, a spring and other structures to be matched, so that the whole shutter is difficult to miniaturize, and the reliability is low and the failure is easy to occur due to the complex structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a machinery light shutter, it is complicated to have solved traditional machinery light shutter structure, and stability is low, easily breaks down, the problem of heat-labile irradiation.

The embodiment of the utility model discloses a realize through following technical scheme:

a mechanical optical shutter comprises a shutter body, a driving mechanism and a light shading assembly, wherein a light through hole is formed in the shutter body, and the driving mechanism and the light shading assembly are arranged on the shutter body; the driving mechanism comprises an electromagnet, a first pin, a second pin and a swing rod, the swing rod is arranged on one side of the light through hole, and the electromagnet is arranged on one side of the swing rod and connected with the swing rod; the first pin is arranged on the shutter body, and one end of the oscillating bar is connected with the first pin and can rotate around the first pin; the other end installation second pin of pendulum rod, the shading subassembly includes: the shutter comprises a first shading sheet and a second shading sheet, wherein a second pin penetrates through the first shading sheet and the second shading sheet simultaneously to be connected with a shutter body, and the first shading sheet and the second shading sheet are hinged on the shutter body at a fixed distance from the second pin; the first shading sheet and the second shading sheet can be driven to move in an opposite direction or in a deviating direction by the electrification or the outage of the electromagnet.

Preferably, the electromagnet includes: the telescopic rod, the telescopic rod is provided with the spacing groove, and the pendulum rod is provided with the transmission branch with spacing groove matched with, and the telescopic rod is connected with the pendulum rod through transmission branch.

Preferably, the mechanical light shutter further comprises a spring, and the spring is installed at one end, far away from the swing rod, of the telescopic rod.

Preferably, the first light-shielding sheet and the second light-shielding sheet are both crescent-shaped and are provided with shaped holes for the second pins to pass through.

Preferably, the shutter body is provided with a guide rail on which the second pin slides.

Preferably, the mechanical optical shutter further includes a cover plate restricting rotation of the light blocking member.

Preferably, the mechanical optical shutter further comprises a stopper plate installed at one end of the light blocking assembly.

Preferably, the shutter body (1) is made of an aluminum alloy material, and the shading component (3) is made of a stainless steel material.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

the utility model provides a machinery light shutter passes through the circular telegram of electro-magnet back and is driven the one end of pendulum rod by the telescopic link and rotate around first pin, and the other end drives first anti-dazzling screen and second anti-dazzling screen through the second pin and does the motion in opposite directions and hide logical unthreaded hole, and the electro-magnet resets through the spring after the outage, drives first anti-dazzling screen and second anti-dazzling screen by the telescopic link and does the motion that deviates from mutually and open logical unthreaded hole. Compared with the traditional shutter device: the structure is more simplified, and the cost is lower; the size is smaller, and the occupied space is smaller when the device is installed on other equipment; the shielding and opening actions are completed through simple two-time transmission, so that the stability is higher; the utility model discloses a light shutter adopts two stainless steel blades and aluminum alloy body, has fine thermal diffusivity, and under the heat radiation, non-deformable. The size of the clear aperture is determined by only two blades, so that the size of the clear aperture can be easily customized according to actual conditions, and the method has high flexibility.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of the present invention showing the opening of the light-transmitting hole;

FIG. 2 is a schematic view of the structure of the present invention with the light-passing hole closed;

fig. 3 is a schematic structural diagram of the swing link of the present invention;

icon: 1-shutter body, 11-light through hole, 2-driving mechanism, 21-electromagnet, 211-telescopic rod, 212-limiting groove, 22-first pin, 23-second pin, 24-oscillating bar, 241-transmission supporting rod, 3-shading component, 31-first shading sheet, 32-second shading sheet, 33-first hinging point, 34-second hinging point, 4-cover plate and 5-stop plate.

Detailed Description

A mechanical optical shutter comprises a shutter body 1, a driving mechanism 2 and a shading assembly 3, wherein a light through hole 11 is formed in the shutter body 1, and the driving mechanism 2 and the shading assembly 3 are both arranged on the shutter body 1. The driving mechanism 2 comprises an electromagnet 21, a first pin 22, a second pin 23 and a swing rod 24, the swing rod 24 is installed on one side of the light through hole 11, and the electromagnet 21 is installed on one side of the swing rod 24 and connected with the swing rod 24. The first pin 22 is installed on the shutter body 1, and one end of the swing link 24 is connected with the first pin 22 and can rotate around the first pin 22. The other end of pendulum rod 24 installs second pin 23, and shading component 3 includes: a first light-shielding sheet 31 and a second light-shielding sheet 32, the second pin 23 passing through the first light-shielding sheet 31 and the second light-shielding sheet 32 at the same time to be connected with the shutter body 1, the first light-shielding sheet 31 and the second light-shielding sheet 32 being hinged on the shutter body 1 at a fixed distance from the second pin 23. The shutter also comprises a spring, and the spring is arranged at one end of the telescopic rod 211 far away from the oscillating rod 24; the shutter further comprises an expansion link 211, the expansion link 211 is provided with a limiting groove 212, the swing rod 24 is provided with a transmission support rod 241 matched with the limiting groove 212, and the expansion link 211 penetrates through the transmission support rod 241 and is connected with the swing rod 24.

After the electromagnet 21 is energized, the telescopic rod 211 drives one end of the swing rod 24 to rotate around the first pin 22, the other end of the swing rod drives the first light shielding sheet 31 to rotate around the first hinge point 33 through the second pin 23, the second light shielding sheet 32 rotates around the second hinge point 34, and at this time, the first light shielding sheet 31 and the second light shielding sheet 32 move oppositely to shield the light through hole 11. After the electromagnet 21 is powered off, the telescopic rod 211 is pushed to reset through the spring, the telescopic rod 211 drives one end of the swing rod 24 to rotate around the first pin 22, the other end of the swing rod is driven through the second pin 23, the other end of the swing rod drives the first light-shielding sheet 31 to rotate around the first hinge point 33 through the second pin 23, the second light-shielding sheet 32 rotates around the second hinge point 34, and at the moment, the first light-shielding sheet 31 and the second light-shielding sheet 32 move away from each other to open the light through hole 11. Compared with the traditional shutter device, the shutter device has the advantages of few parts, simple transmission structure, easy realization and easier guarantee of the stability during working.

A mechanical optical shutter is also provided with a stop plate 5, the stop plate 5 is installed at one end of a light shading component 3, a first light shading sheet 31 and a second light shading sheet 32 are both in a crescent shape and are provided with through holes for a second pin 23 to pass through, and the second pin 23 drives the first light shading sheet 31 and the second light shading sheet 32. When the light-shielding action is carried out, the first light-shielding piece 31 and the second light-shielding piece 32 move oppositely, when a certain stroke is reached, the first light-shielding piece 31 and the stop plate 5 are mutually abutted, and at the moment, the movement is finished and the light-passing hole 11 is completely shielded; when the window is opened, the first shade 31 and the second shade 32 move away from each other, and when a certain stroke is reached, the second shade 32 and the stop plate 5 abut against each other, and at this time, the movement is finished and the light through hole 11 is completely opened. And a cover plate 4 for limiting the rotation of the shading assembly 3 is further arranged, and the cover plate 4 is buckled on the first shading sheet 31 and the second shading sheet 32, so that the stability of the first shading sheet 31 and the second shading sheet 32 in rotation is improved.

The shutter body 1 is provided with a guide rail for the second pin 23 to slide, and the second pin 23 slides along the guide rail under the driving of the swing rod 24, so that the sliding of the second pin 23 has a guiding function, the reliability of shutter transmission is increased, and the stability of the movement of the first light shielding sheet 31 and the second light shielding sheet 32 in the opposite direction or in the opposite direction is ensured.

The shutter body 1 is made of an aluminum alloy material, the shading component 3 is made of a stainless steel material, and the stainless steel shading component 3 and the aluminum alloy shutter body 1 have good heat dissipation performance and are not easy to deform under heat radiation. The size of the light through hole 11 is determined by the shading component 3, so that the size of the light through hole 11 can be easily customized according to actual conditions, and high flexibility is achieved.

Claims

1. A mechanical optical shutter, characterized by: the shutter comprises a shutter body (1), a driving mechanism (2) and a shading assembly (3), wherein a light through hole (11) is formed in the shutter body (1), and the driving mechanism (2) and the shading assembly (3) are arranged on the shutter body (1); the driving mechanism (2) comprises an electromagnet (21), a first pin (22), a second pin (23) and a swing rod (24), the swing rod (24) is installed on one side of the light through hole (11), and the electromagnet (21) is installed on one side of the swing rod (24) and connected with the swing rod (24); the first pin (22) is installed on the shutter body (1), and one end of the swing rod (24) is connected with the first pin (22) and can rotate around the first pin (22); the other end of pendulum rod (24) is installed second pin (23), shading subassembly (3) includes: a first shutter blade (31) and a second shutter blade (32), the second pin (23) passing through both the first shutter blade (31) and the second shutter blade (32), the first shutter blade (31) and the second shutter blade (32) being hinged on the shutter body (1) at a fixed distance from the second pin (23); the electromagnet (21) can drive the first shading sheet (31) and the second shading sheet (32) to move in an opposite direction or in an opposite direction when being powered on or powered off.

2. The mechanical optical shutter according to claim 1, wherein: the electromagnet (21) comprises: telescopic link (211), telescopic link (211) are provided with spacing groove (212), pendulum rod (24) be provided with spacing groove (212) matched with transmission branch (241), telescopic link (211) pass through transmission branch (241) with pendulum rod (24) are connected.

3. The mechanical optical shutter according to claim 2, wherein: the telescopic rod (211) is far away from one end of the swing rod (24).

4. The mechanical optical shutter according to claim 1, wherein: the first light-shielding sheet (31) and the second light-shielding sheet (32) are both crescent-shaped and are provided with holes for the second pins (23) to pass through.

5. The mechanical optical shutter according to claim 1, wherein: the shutter body (1) is provided with a guide rail for the second pin (23) to slide.

6. The mechanical optical shutter according to claim 1, wherein: and the shading component also comprises a cover plate (4) for limiting the rotation of the shading component (3).

7. The mechanical optical shutter according to claim 1, wherein: the shading assembly further comprises a stop plate (5), and the stop plate (5) is installed at one end of the shading assembly (3).

8. The mechanical optical shutter according to claim 1, wherein: the shutter body (1) is made of an aluminum alloy material, and the shading component (3) is made of a stainless steel material.