CN202733792U - Infrared light source with variable projection angle - Google Patents
Infrared light source with variable projection angle Download PDFInfo
- Publication number
- CN202733792U CN202733792U CN2012203616308U CN201220361630U CN202733792U CN 202733792 U CN202733792 U CN 202733792U CN 2012203616308 U CN2012203616308 U CN 2012203616308U CN 201220361630 U CN201220361630 U CN 201220361630U CN 202733792 U CN202733792 U CN 202733792U
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- infrared light
- base plate
- light supply
- projection angle
- pole
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Abstract
The utility model provides an infrared light source with a variable projection angle, which comprises a bottom plate, a lens frame, a driving mechanism and a central rod, wherein the bottom plate and the lens frame are respectively sleeved on the central rod; at least two convex lenses are arranged on the lens frame; at least two infrared light source generating devices, which are respectively positioned on the same straight line together with the central points of the convex lenses, are arranged on the bottom plate; and the driving mechanism is fixedly connected with the tail part of the central rod. The infrared light source with the variable projection angle, provided by the utility model, has the advantages as follows: through the adoption of a multi-axis parallel light source, the projection angle can be changed according to needs, so that a requirement of light intensity within a certain range is satisfied and better light intensity is obtained.
Description
Technical field
The utility model relates to a kind of light source, refers in particular to the variable infrared light supply of a kind of crevice projection angle.
Background technology
Present light source is the moving axially of set of lenses of utilizing one or more groups mostly, changes the combined focal length of system, keeps simultaneously last image planes constant, forms the multi-angle irradiation light source, is widely used in the fields such as monitoring, illumination.But, what these variable-angle light sources adopted substantially is the zoom light source of single shaft, namely be that one group of set of lenses and light source with many groups all is in same optical axis, the shortcoming of this technology just is that the luminous intensity of light source often can not satisfy instructions for use when adopting single light source.
Open day be that the patent document that June 1, publication number in 2011 are CN102081280A has proposed a kind of zoom-type infrared lamp and control method thereof, zoom-type infrared lamp wherein, comprise controller, motor, the infrared lamp camera lens that connects successively and the parallel infrared light generating means that connects with controller, parallel infrared light generating means is for generation of parallel infrared light; The infrared lamp camera lens comprises the first convex lens and the second convex lens, and one of them convex lens position is fixed, another convex lens position is adjustable, and order is positioned on the primary optical axis of the infrared light path direction of propagation; Controller, be used for receiving the current zoom multiple information of thermal camera, according to the corresponding relation data message of this zoom multiple information and the zoom multiple that prestores and two convex lens spacings, drive the first convex lens/second convex lens on primary optical axis move left and right to adjust the dispersion angle of IR.Adopt this invention can control the dispersion angle of IR, improved the camera views quality, but should invention use the single light source irradiation so that exposure intensity is inadequate, the light utilization of multiple light courcess is too low problem again.
The utility model content
Mostly be single shaft so that the not good problem of light effects in order to solve existing variable projection angle light-source system, the utility model proposes the variable infrared light supply of a kind of crevice projection angle, adopt the multiaxis source of parallel light, conversion crevice projection angle according to demand, satisfy the needs of luminous intensity in the certain limit, obtained better intensity of illumination.
The technical scheme that the utility model adopts is: the infrared light supply that a kind of crevice projection angle is variable, comprise base plate, lens hanger, center-pole and driving mechanism, described lens hanger is provided with several convex lens, described base plate be provided with several respectively with the infrared light supply generating means of central point on same straight line of convex lens, described driving mechanism is fixedly connected with the center-pole afterbody.
The utility model small volume, the light source generator and the convex lens that are on the same straight line by at least two groups form at least two parallel optical axis, change the distance of light source generator and convex lens, realize the continuous variation of throw light angle, after going out, ray cast pools Ray Of Light, satisfy the needs of luminous intensity in the certain limit, obtain better illumination or monitoring effect.If the convex lens quantity that arranges on the lens mount is 2 to 7, then applicable to the illumination auxiliary equipment of video monitoring equipment, LED illumination and photography and vedio recording equipment etc., can cooperate synchronously the equipment such as video monitoring equipment, LED illumination and photography and vedio recording visible angle the variation demand and produce different throw light angles; If the convex lens quantity that arranges on the lens mount need then to be applicable to the environment of floodlighting more than or equal to 8.
As preferably, described base plate is fixedly connected with center-pole, and described lens hanger and center-pole are slidingly connected, and the side of lens hanger is provided with installing hole.The position of infrared light supply generating means can be moved along center-pole with base plate, and lens position is irremovable, driving mechanism realizes that by the position movement that drives base plate the angle of final throw light changes, and installing hole is convenient to the utility model and is fixed on other objects.
As preferably, described base plate and center-pole are slidingly connected, and described lens hanger is fixedly connected with center-pole, and the side of base plate is provided with installing hole.The position of lens can be moved along center-pole with lens hanger, and the infrared light supply generating means is irremovable, driving mechanism realizes that by the position movement that drives lens hanger the angle of final throw light changes, and installing hole is convenient to the utility model and is fixed on other objects.
As preferably, described infrared light supply generating means is the LED infrared lamp.The LED lamp is selected infrared LED, and volume is little, and the life-span is long, and is energy-efficient.
As preferably, described driving mechanism is the step-by-step linear electric motor driving mechanism.Adopt the step-by-step linear electric motor transmission mechanism to drive the position movement of base plate or lens hanger, stablize than more seem quick with modes such as gear drive or cam drives.
As preferably, described driving mechanism is gear drive.The position movement of base plate or lens hanger is finished by gear drive.
As preferably, described driving mechanism is cam drive.The position movement of base plate or lens hanger is finished by cam drive.
As preferably, the outer surface of described base plate is provided with radiator, and described radiator and base plate are for removably connecting.Because the infrared LED lamp quantity that adopts is more, the heat that dense distribution produces is larger, so the radiators such as fan, radiating block need to be set behind the infrared LED lamp.If radiator lost efficacy, can change at any time.
As preferably, described base plate and lens hanger both sides are respectively equipped with light guide bar, and described light guide bar one end is fixedly connected with lens hanger, the other end of light guide bar and base plate socket.
As preferably, described center-pole is screw mandrel.Center-pole adopts screw mandrel, i.e. ball-screw, the bearing portions on it be behind the base plate or between base plate and the lens hanger, and the bearing that driving mechanism drives screw mandrel is realized the position movement of base plate or lens hanger.
The beneficial effects of the utility model are: adopt the multiaxis source of parallel light, conversion crevice projection angle has according to demand satisfied the needs of luminous intensity in the certain limit, obtains better intensity of illumination.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is front view of the present utility model;
Fig. 3 is rearview of the present utility model;
Fig. 4 is left view of the present utility model;
Fig. 5 is a kind of light path schematic diagram of the present utility model;
Fig. 6 is the light path schematic diagram behind the utility model moving lens horse position.
Among the figure, 1-base plate, 2-lens hanger, 3-center-pole, 4-driving mechanism, 5-convex lens, 6-infrared light supply generating means, 7-radiator, 8-light guide bar, 9-installing hole.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the infrared light supply that a kind of crevice projection angle is variable, comprise base plate 1, lens hanger 2, center-pole 3 and driving mechanism 4, center-pole 3 passes the centre bore of base plate 1 and the centre bore of lens hanger 2 successively, base plate 1 and lens hanger 2 are respectively perpendicular to center-pole 3, base plate 1 is fixedly connected with center-pole 3, and lens hanger 2 is slidingly connected with center-pole 3, and driving mechanism 4 is fixedly connected with center-pole 3 afterbodys.Center-pole 3 is screw mandrel.
The frame of lens hanger 2 is that symmetrical cross is petal, four petal parts be annular and with the suitable manhole of convex lens shape, convex lens 5 are installed in the position of each manhole by the instrument screw.These four convex lens 5 are the planoconvex spotlight of 25 millimeters of diameters, 50 millimeters of focal lengths, and the aspheric surface of each convex lens 5 is towards the infrared LED lamp.The light source generator and the convex lens that are on the same straight line form a parallel optical axis, so have four parallel optical axis in the present embodiment.
The center of lens hanger 2 has a threaded through hole in inboard, and center-pole 3 passes through hole from the inboard of lens hanger 2, and the head of center-pole 3 is helicitic texture, is the outer surface that three millimeters nut is fixed in lens hanger 2 by external diameter.
There is respectively through hole base plate 1 left and right sides and lens hanger 2 both sides, and diameter is that an end of 3 millimeters light guide bar 8 is fixedly connected with by screw thread with through hole on the lens hanger 2, and the other end of light guide bar 8 and base plate 1 slidably are socketed.
Present embodiment is applicable to the illumination auxiliary equipment of video monitoring equipment, LED illumination and photography and vedio recording equipment etc., can cooperate synchronously the equipment such as video monitoring equipment, LED illumination and photography and vedio recording visible angle the variation demand and produce different throw light angles.During use, the light that the infrared light supply generating means 6 that each LED infrared lamp consists of sends changes through angle can occur after the refraction of convex lens, because several LED position is very near, final a part of throw light can overlap, be as shown in Figure 5 the index path that 2 LED infrared lamps send and the planoconvex lens refraction overlaps of longitudinal arrangement, F is focus, the light that dash area namely overlaps.2 transversely arranged LED infrared lamps send and the planoconvex lens refraction overlaps index path and Fig. 5 are similar, four parallel optical axis of four LED infrared lamps like this and four convex lens formations occur and the light of refraction converges coincidence in certain area, in this zone that light overlaps, luminous intensity strengthens because of the stack of light, thereby obtains better radiation response.
Crevice projection angle A, namely the change of size can occur by the position movement of lens hanger 2 in the angle on the dash area left side among Fig. 5, and the projected area also can change.As shown in Figure 6, behind the moving lens horse 2, the distance of lens hanger 2 and infrared light supply generating means 6 becomes large laterally, and the positional distance infrared light supply generating means 6 that light overlaps is farther, and crevice projection angle diminishes.
Above embodiment only is explanation technological thought of the present utility model; can not limit protection domain of the present utility model with this; every technological thought according to the utility model proposes, any change of doing on the technical scheme basis all falls within the protection domain of the present utility model.
Claims (10)
1. infrared light supply that crevice projection angle is variable, it is characterized in that: comprise base plate, lens hanger, driving mechanism and center-pole, described base plate, lens hanger are socketed in respectively on the center-pole, lens hanger is provided with at least two convex lens, base plate be provided with at least two respectively with the infrared light supply generating means of central point on same straight line of convex lens, described driving mechanism is fixedly connected with the center-pole afterbody.
2. the variable infrared light supply of crevice projection angle according to claim 1, it is characterized in that: described base plate is fixedly connected with center-pole, and described lens hanger and center-pole are slidingly connected, and the side of lens hanger is provided with installing hole.
3. the variable infrared light supply of crevice projection angle according to claim 1, it is characterized in that: described base plate and center-pole are slidingly connected, and described lens hanger is fixedly connected with center-pole, and the side of base plate is provided with installing hole.
4. the variable infrared light supply of crevice projection angle according to claim 1, it is characterized in that: described infrared light supply generating means is the LED infrared lamp.
5. the variable infrared light supply of crevice projection angle according to claim 1, it is characterized in that: described driving mechanism is the step-by-step linear electric motor driving mechanism.
6. the variable infrared light supply of crevice projection angle according to claim 1, it is characterized in that: described driving mechanism is gear drive.
7. the variable infrared light supply of crevice projection angle according to claim 1, it is characterized in that: described driving mechanism is cam drive.
8. according to claim 1 and 2 or the variable infrared light supply of 3 described crevice projection angles, it is characterized in that: the outer surface of described base plate is provided with radiator, and described radiator and base plate are for removably connecting.
9. according to claim 1 and 2 or the variable infrared light supply of 3 described crevice projection angles, it is characterized in that: described base plate and lens hanger both sides are respectively equipped with light guide bar, and described light guide bar one end is fixedly connected with lens hanger, the other end of light guide bar and base plate socket.
10. according to claim 1 to the variable infrared light supply of the described crevice projection angle of 7 any one, it is characterized in that: center-pole is screw mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203616308U CN202733792U (en) | 2012-07-25 | 2012-07-25 | Infrared light source with variable projection angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203616308U CN202733792U (en) | 2012-07-25 | 2012-07-25 | Infrared light source with variable projection angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733792U true CN202733792U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203616308U Expired - Lifetime CN202733792U (en) | 2012-07-25 | 2012-07-25 | Infrared light source with variable projection angle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075196A (en) * | 2013-03-27 | 2014-10-01 | 深圳市海洋王照明工程有限公司 | Lamp |
| CN108730783A (en) * | 2018-06-29 | 2018-11-02 | 广东奥普特科技股份有限公司 | A kind of light source and its workflow with guiding device |
-
2012
- 2012-07-25 CN CN2012203616308U patent/CN202733792U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075196A (en) * | 2013-03-27 | 2014-10-01 | 深圳市海洋王照明工程有限公司 | Lamp |
| CN108730783A (en) * | 2018-06-29 | 2018-11-02 | 广东奥普特科技股份有限公司 | A kind of light source and its workflow with guiding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |