CN211260683U

CN211260683U - Dimmer suitable for area light source

Info

Publication number: CN211260683U
Application number: CN201922481085.0U
Authority: CN
Inventors: 冯晶; 何灿栋; 熊鑫
Original assignee: Thousand Lights Lighting Changzhou Ltd
Current assignee: Thousand Lights Lighting Changzhou Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-14
Anticipated expiration: 2029-12-31

Abstract

The dimmer suitable for the surface light source comprises two layers of light equalizing plates, wherein optical cloth is arranged in the two layers of light equalizing plates; aluminum strips are arranged around the light homogenizing plate and the optical cloth, grooves are formed in the aluminum strips, and the peripheral side edges of the light homogenizing plate and the optical cloth are fixed in the grooves in the aluminum strips; and adjacent aluminum strips are connected through a fillet connecting piece. The dimmer body formed by mutually connecting the light equalizing plate, the optical cloth, the aluminum strip and the fillet connecting piece is arranged in a slot of a fixed seat arranged on the light source in a direct-inserting mode. The device is simple and convenient to install, has extremely high dimming effect, and does not influence the distribution of the spectrum in each wave band; meanwhile, the dimmer plate has no positive and negative difference, thereby avoiding errors.

Description

Dimmer suitable for area light source

Technical Field

The utility model relates to a camera image field, concretely relates to dimmer suitable for area source.

Background

The camera imaging industry generally has a high requirement on the dynamic range of the light source brightness. This means that the user needs both high and low brightness light. The utility model discloses be exactly in order to satisfy this demand design of customer. When the customer needs high brightness light, the dimmer is removed. When the customer needs low light, the dimmer is installed.

SUMMERY OF THE UTILITY MODEL

In view of the above circumstances, in order to solve the problems of the above technologies, the present invention provides a light reduction sheet for a surface light source, comprising two layers of light equalizing plates, wherein an optical cloth is disposed in the two layers of light equalizing plates; aluminum strips are arranged around the light homogenizing plate and the optical cloth, grooves are formed in the aluminum strips, and the peripheral side edges of the light homogenizing plate and the optical cloth are fixed in the grooves in the aluminum strips; and adjacent aluminum strips are connected through a fillet connecting piece.

Preferably, the fillet connecting piece is provided with two connectors, and the two connectors are respectively inserted into grooves formed in adjacent aluminum strips.

Preferably, a threaded hole is formed in the connector, and the aluminum strip is fixedly connected with the connector through a screw.

Preferably, the dimmer plate body formed by mutually connecting the light homogenizing plate, the optical cloth, the aluminum strip and the fillet connecting piece is arranged in a slot of a fixed seat arranged on the light source in a direct insertion mode.

Preferably, the fixing seat is fixedly connected with the side surface of the light source through a side surface screw.

Preferably, the upper part of the slot of the fixing seat is provided with a front hand screw, and the front hand screw is in compression connection with the upper surface of the dimming sheet body inserted into the slot of the fixing seat.

After the technology provided by the utility model, according to the utility model discloses the dimmer suitable for area source has following beneficial effect:

1) the device is simple and convenient to install, has extremely high dimming effect, and does not influence the distribution of the spectrum in each wave band;

meanwhile, the dimmer plate has no positive and negative difference, thereby avoiding errors.

Drawings

FIG. 1 is a perspective view of a dimmer plate mounted on a light source;

FIG. 2 is a schematic view of a dimmer sheet;

FIG. 3 is an exploded view of a three-layer structure of a dimmer plate;

figure 4 is a view of the rounded corner connector of the dimmer plate.

Detailed Description

The present invention will be described in further detail with reference to embodiments shown in the drawings. The described embodiments include various specific details to aid understanding, but they are to be construed as merely illustrative, and not restrictive of all embodiments of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Meanwhile, in order to make the description more clear and concise, a detailed description of functions and configurations well known in the art will be omitted.

As shown in fig. 1 and 2, the light-reducing sheet is used in a surface light source and is attached to the front end of the surface light source.

As shown in fig. 3, the dimmer is composed of three layers of optical materials, and the uppermost layer and the lowermost layer are light homogenizing plates 8 with light homogenizing function, which are characterized by milk white color, high light transmittance and good light homogenizing and mixing effect. The middle layer is an optical cloth 9. It is characterized by a uniform transmittance for each band of the spectrum, with a uniform transmittance, e.g., 2%, across all bands of the spectrum. The optical cloth 9 is clamped by two light homogenizing plates 8. The four sides are then secured by aluminium strips 5. Four aluminum bars 5 are connected by round corner connecting pieces 6 through screws. The rounded corner connectors 6 are shown in figure 4.

The dimmer is mounted on the light source 1 by means of direct insertion. The light source 1 is provided with a fixed seat 2, and the fixed seat 2 is provided with a slot. The fixed seat 2 is characterized in that the side screw 3 is screwed by a side hand to be fixed with the light source. The front hand-screwed screw 4 is used for fixing the dimmer.

The dimming sheet suitable for the surface light source is simple and convenient to mount, has a very high dimming effect, and does not influence the distribution of a spectrum in each waveband; meanwhile, the dimmer plate has no positive and negative difference, thereby avoiding errors.

The terms "upper", "lower" or "above", "below" or the like are used herein in a relative relationship with respect to a normal use in a placed state, i.e., a positional relationship as generally shown in the drawings of the present application. When the placement state changes, for example, when the placement state is turned over, the corresponding positional relationship should be changed accordingly to understand or implement the technical solution of the present application.

Claims

1. The dimmer applicable to the surface light source is characterized by comprising two layers of light homogenizing plates (8), wherein optical cloth (9) is arranged in the two layers of light homogenizing plates (8); aluminum strips (5) are arranged around the light homogenizing plate (8) and the optical cloth (9), grooves are formed in the aluminum strips (5), and the side edges of the light homogenizing plate (8) and the optical cloth (9) are fixed in the grooves in the aluminum strips (5); the adjacent aluminum strips (5) are connected through a fillet connecting piece (6).

2. A dimmer for a surface light source as claimed in claim 1, wherein the rounded corner connectors (6) are provided with two connectors (61), and the two connectors (61) are respectively inserted into grooves provided on the adjacent aluminum strips (5).

3. A dimmer for a surface light source as claimed in claim 2, wherein the connector (61) is provided with a threaded hole, and the aluminum bar (5) and the connector (61) are fixedly connected through a screw.

4. A dimmer for a surface light source as claimed in any one of claims 1 to 3, wherein the dimmer body formed by connecting the light homogenizing plate (8), the optical cloth (9), the aluminum strip (5) and the fillet connecting piece (6) is arranged in the slot of the fixed seat (2) arranged on the light source (1) in a direct-insert manner.

5. A dimmer adapted to a surface light source as claimed in claim 4, wherein the fixing base (2) is fixedly connected to the side of the light source (1) by a side screw (3).

6. A dimmer for a surface light source as claimed in claim 4, wherein the upper part of the slot of the fixing base (2) is provided with a front hand screw (4), and the front hand screw (4) is connected with the upper surface of the dimmer body inserted into the slot of the fixing base (2) in a pressing way.