CN108761966B

CN108761966B - Variable angle light filling lamp and camera

Info

Publication number: CN108761966B
Application number: CN201810321815.8A
Authority: CN
Inventors: 王彦鹏
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2018-04-11
Filing date: 2018-04-11
Publication date: 2020-12-08
Anticipated expiration: 2038-04-11
Also published as: CN108761966A

Abstract

The invention relates to the technical field of security monitoring and discloses a variable-angle light supplementing lamp and a camera, and aims to reduce the light supplementing cost and the space occupancy rate of the light supplementing lamp. This variable angle light filling lamp sets up inside the casing of camera, the casing has the trompil of making a video recording and light filling trompil, including light filling light source and variable angle lens subassembly, light filling light source, variable angle lens subassembly and light filling trompil are arranged in proper order and are set up on a axis, the light process of light filling light source variable angle lens subassembly is followed the light filling trompil jets out and carries out the light filling, just variable angle lens subassembly has a plurality of focus states.

Description

Variable angle light filling lamp and camera

Technical Field

The invention relates to the technical field of security monitoring, in particular to a variable-angle light supplementing lamp and a camera.

Background

With the increasing security requirements of society and individuals, cameras are also constantly being developed. Because product function needs, equipment casing in the current camera needs to provide the light filling measure for inside camera because spherical camera, cloud platform camera among the current camera, and this type of product belongs to outdoor type equipment simultaneously, in-service use, often touch the condition far and near, that the visual angle is not of uniform size, just the light filling effect of light filling lamp just needs to be fully considered this moment.

The conventional camera light supplement lamp is generally a scheme of adjusting a zoom light supplement lamp by matching a plurality of light supplement lamps with different angles. When the lens used by the camera is a zoom lens, the field angle at the telephoto end of the lens is different from the field angle at the wide-angle end, the field angle at the telephoto end is smaller, and the field angle at the wide-angle end is larger. In order to be compatible with two different field angles, two or more than two light supplementing lamps are arranged on the camera; the light supplementing angle of one light supplementing lamp is small, so that the condition that a long focal end is used by a lens is adapted; the light supplementing angle of the other light supplementing lamp is large, so that the wide-angle end is suitable for the condition that the lens is used.

The scheme that many different angles light filling lamp collocation were used has the characteristics that need use two light filling lamps at least, and the required consumption of light filling and the heat that gives off are the twice of single light filling lamp at least, and its light filling cost and space occupy great.

Disclosure of Invention

The invention provides a variable-angle light supplementing lamp and a camera, which are used for reducing the light supplementing cost and the space occupancy rate of the light supplementing lamp.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a variable angle light filling lamp, sets up inside the casing of camera, the casing has the trompil of making a video recording and light filling trompil, including light filling light source and variable angle lens subassembly, light filling light source, variable angle lens subassembly and light filling trompil are arranged in proper order and are set up on a axis, the light process of light filling light source variable angle lens subassembly is followed the light filling trompil jets out and carries out the light filling, just variable angle lens subassembly has a plurality of focus states.

Preferably, the variable-angle lens assembly comprises a light supplement lamp shell, a reciprocating component, a lens and at least one fresnel lens, the lens is arranged in the middle of the light supplement lamp shell, one side of the lens faces the light supplement light source, the other side of the lens faces the light supplement light source, the at least one fresnel lens is connected with the reciprocating component, and each fresnel lens is driven by the reciprocating component to reciprocate at a position facing the lens and a position not facing the lens.

Preferably, the reciprocating component comprises a pulse motor, a rocker transmission mechanism and a change-over switch, the pulse motor is connected with the at least one fresnel lens through the rocker transmission mechanism, the change-over switch is used for starting and stopping the pulse motor, and when the pulse motor works, each fresnel lens is driven by the pulse motor to perform variable-angle light supplement on the reciprocating motion of the lens at the position right opposite to the lens and the position not right opposite to the lens.

Preferably, the light supplement lamp shell is provided with a guide groove, and the rocker transmission mechanism penetrates through the guide groove to perform transmission.

Preferably, the reciprocating member is a linear reciprocating member.

Preferably, the reciprocating member is an annular reciprocating member.

Preferably, the camera housing, the light supplement lamp housing and the reciprocating member are made of acrylic, metal and ceramic.

Preferably, the lighting device further comprises a decorative cover arranged at the light filling opening.

The light supplementing light source, the variable angle lens assembly and the light supplementing opening of the variable angle light supplementing lamp are sequentially arranged on one central axis to provide light supplementing light, the variable angle lens assembly is provided with a plurality of focal length states, when the variable angle lens assembly is in different focal length states, focal lengths of the light supplementing light passing through the variable angle lens assembly are different, and therefore long-focus, wide-angle and other light supplementing light is provided for a camera. The variable angle light filling lamp in the technical scheme can greatly reduce the light filling cost and improve the space occupancy rate of the light filling lamp in the camera.

The embodiment of the invention also provides a camera which comprises the variable-angle light supplementing lamp.

The camera provided by the embodiment of the invention is also provided with the variable-angle supplementary lighting lamp, so that long-focus, wide-angle and other supplementary lighting rays can be provided for the camera; the variable angle light filling lamp can greatly reduce the light filling cost and improve the space occupancy rate of the light filling lamp in the camera.

Drawings

Fig. 1 is an exploded view of a light supplement lamp with a variable angle according to an embodiment of the present invention;

fig. 2 is an exploded view of a variable-angle lens assembly of the variable-angle fill light according to an embodiment of the invention;

fig. 3a is a partial schematic view of an in-place state of a fresnel lens of a variable-angle lens assembly of a variable-angle fill light according to an embodiment of the present invention;

fig. 3b is a partial schematic view of a fresnel lens of a variable-angle lens assembly of a variable-angle fill light according to an embodiment of the present invention in an out-of-position state;

fig. 4a is a schematic diagram illustrating an in-place state of a fresnel lens when a variable-angle lens assembly of the variable-angle fill light linearly reciprocates according to an embodiment of the present invention;

fig. 4b is a schematic diagram illustrating an out-of-position state of a fresnel lens when a variable-angle lens assembly of the variable-angle fill light linearly reciprocates according to an embodiment of the invention;

fig. 5a is a schematic view illustrating a reciprocating state of a fresnel lens when a variable-angle lens assembly of a light supplement lamp according to another embodiment of the present invention reciprocates linearly;

fig. 5b is a schematic view illustrating a reciprocating state of a fresnel lens when an arc of a variable-angle lens assembly reciprocates in a light supplement lamp according to another embodiment of the present invention;

fig. 5c is a schematic view of a reciprocating state of the fresnel lens when the variable-angle lens assembly of the variable-angle fill light provided by the embodiment of the invention linearly reciprocates.

Reference numerals:

1-shell

2-light supplement light source

3-variable angle lens assembly

11-camera opening

12-opening for light supplement

31-light supplement lamp shell

32-reciprocating member

33-lens

34-Fresnel lens

35-guide groove

Detailed Description

The light supplement cost and the space occupancy rate of the light supplement lamp are reduced. The embodiment of the invention provides a variable-angle light supplement lamp and a camera. In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples.

Referring to fig. 1, an embodiment of the present invention provides a variable-angle light supplement lamp, which is disposed inside a housing 1 of a camera, the housing has a camera opening 11 and a light supplement opening 12, and includes a light supplement light source 2 and a variable-angle lens assembly 3, the light supplement light source 2, the variable-angle lens assembly 3, and the light supplement opening 12 are sequentially arranged on a central axis, light of the light supplement light source 2 is emitted from the light supplement opening 12 through the variable-angle lens assembly 3 to supplement light, and the variable-angle lens assembly 3 has a plurality of focal length states.

In a specific embodiment of the present invention, as shown in fig. 2, the variable angle lens assembly 3 of the variable angle fill-in lamp includes a fill-in lamp housing 31, a reciprocating member 32, a lens 33 and at least one fresnel lens 34, the lens 33 is disposed in the middle of the fill-in lamp housing 31, one side of the lens 33 faces the fill-in light source 2, the other side of the lens 33 faces the at least one fresnel lens 34, the at least one fresnel lens 34 is connected to the reciprocating member 32, and each fresnel lens 34 is driven by the reciprocating member 32 to reciprocate between a position facing the lens 33 and a position not facing the lens 33. The fresnel lens looks like a piece of glass with innumerable multiple concentric circular patterns (i.e., fresnel zones). Many devices that include a fresnel lens allow the lamp to move back and forth in focus to increase or decrease the size of the beam of light because the light transmitted through it is brighter than through a conventional lens, and because the brightness of the entire beam of light transmitted through it is relatively uniform at various locations.

Referring to fig. 3a, 3b, 4a and 4b, the reciprocating member 32 according to the embodiment of the present invention includes a pulse motor, a rocker transmission mechanism and a switch, the pulse motor is connected to at least one fresnel lens 34 through the rocker transmission mechanism, the switch is used for starting and stopping the pulse motor, and when the pulse motor works, each fresnel lens 34 is driven by the pulse motor to perform variable-angle light compensation at positions facing the lens and positions not facing the lens in a reciprocating manner. Fresnel lens and ordinary lens cover the light filling trompil under the drive of reciprocating motion component periodically for variable angle lens subassembly makes a round trip to switch in a plurality of focus states, thereby reaches the effect of multi-angle light filling, and reduces the space occupancy of light filling cost and light filling lamp. The pulse motor preferably adopts a magnetic valve motor; the supplementary lighting source includes, but is not limited to, an infrared light source, a visible light source, and the like.

The basic working principle of the variable angle lens assembly in the embodiment of the invention is as follows: the light supplementing light source emits light supplementing light beams which are changed into long-focus light supplementing light beams through the lens. The position of the Fresnel lens is switched by the rocker transmission mechanism and the pulse motor, so that the light supplementing light beams are changed into wide-angle light supplementing light beams through the Fresnel lens or maintain two states of the long-focus light beams without passing through the Fresnel lens, and different wide-angle light supplementing light beams can be generated by the Fresnel lenses with different specifications.

In the reciprocating component of the embodiment of the invention, the light supplement lamp shell 31 is provided with a guide groove 35, and the rocker transmission mechanism passes through the guide groove 35 for transmission. As shown in fig. 5a, 5b and 5c, the specific configuration of the guide groove is not limited in the embodiment of the present invention, including but not limited to: the reciprocating component is a linear reciprocating component; the reciprocating component is an arc reciprocating component; the reciprocating member is an annular reciprocating member.

Taking only a linear reciprocating member as an example, referring to fig. 4a, 4b and 5a, the mechanical principle of the reciprocating member driving the fresnel lens to reciprocate in the embodiment of the present invention is as follows: the camera gives a drive signal of a prescribed voltage, a prescribed pulse, to the pulse motor. The pulse motor carries out regular rotation action after receiving the driving signal to drive the rocker transmission mechanism to swing left and right. The rocker transmission mechanism penetrates through the arc-shaped guide groove 35 on the light supplement lamp shell 31, and the arc-shaped guide groove 35 restrains the position of the rocker, so that the left-right swinging motion of the rocker transmission mechanism is accurately and stably arc-shaped. Further, the rocker transmission mechanism passes through the arc-shaped guide groove 35 on the light supplement lamp shell 31 and then passes through the linear guide groove 35 at the fresnel lens 34, the arc-shaped swing is converted into linear reciprocating motion by the linear guide groove 35, and finally the periodic motion of the fresnel lens is completed.

The camera shell, the light supplement lamp shell and the reciprocating component in the embodiment of the invention are made of acrylic, metal and ceramic. Therefore, the strength of the material and the structural sealing performance are guaranteed, and further the variable-angle light supplement lamp further comprises a decoration cover arranged at the light supplement opening. To achieve the IP67 protection level of the host module 4. IP67 refers to a level of security of protection. IP is an abbreviation for Ingress Protection Rating (or International Protection code) that defines the Protection of an interface against liquid and solid particles. The IP is followed by 2 digits, the 1 st is a solid protection grade, the range is 0-6, and the protection from large-particle foreign matters to dust is respectively represented; the 2 nd is the liquid protection level, ranging from 0 to 8, which respectively represents protection against pressure from vertical drops to the bottom of the water. Larger numbers indicate greater power. IP67 is explained as protection against dust ingestion (overall protection against contact, protection against dust penetration); and (4) short-time soaking (preventing soaking) during protection.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A variable angle light supplement lamp is arranged inside a shell of a camera, the shell is provided with a camera shooting opening and a light supplement opening, and the variable angle light supplement lamp is characterized by comprising a light supplement light source and a variable angle lens assembly, the light supplement light source, the variable angle lens assembly and the light supplement opening are sequentially arranged on a central axis, light of the light supplement light source is emitted from the light supplement opening through the variable angle lens assembly to supplement light, and the variable angle lens assembly has a plurality of focal length states;

the variable-angle lens assembly comprises a light supplement lamp shell, a reciprocating motion component, a lens and at least one Fresnel lens, the lens is arranged in the middle of the light supplement lamp shell, one side of the lens is opposite to the light supplement light source, the other side of the lens is opposite to the lens, the at least one Fresnel lens is connected with the reciprocating motion component, and each Fresnel lens is driven by the reciprocating motion component to reciprocate at the position opposite to the lens and the position not opposite to the lens.

2. The light supplement lamp with the variable angle according to claim 1, wherein the reciprocating member comprises a pulse motor, a rocker transmission mechanism and a switch, the pulse motor is connected with the at least one fresnel lens through the rocker transmission mechanism, the switch is used for starting and stopping the pulse motor, and when the pulse motor works, each fresnel lens is driven by the pulse motor to reciprocate at a position facing the lens and a position not facing the lens for light supplement with the variable angle.

3. The light supplement lamp as claimed in claim 2, wherein the light supplement lamp housing has a guide slot, and the rocker transmission mechanism is driven through the guide slot.

4. The light supplement lamp as claimed in claim 2, wherein the reciprocating member is a linear reciprocating member.

5. The light supplement lamp as claimed in claim 2, wherein the reciprocating member is a circular reciprocating member.

6. The light supplement lamp as claimed in claim 2, wherein the reciprocating member is a circular reciprocating member.

7. The light supplement lamp with a variable angle according to claim 1, wherein the camera housing, the light supplement lamp housing and the reciprocating member are made of acrylic, metal or ceramic.

8. The light supplement lamp with a variable angle of claim 1, further comprising a decorative cover disposed at the light supplement opening.

9. A camera, comprising a variable angle fill light as claimed in any one of claims 1 to 8.