CN203365876U - Light flux adjusting device - Google Patents

Abstract

The utility model relates to the field of an optical lens, and particularly to a light flux adjusting device. The light flux adjusting device comprises two or more aperture inserts. Luminous fluxes of the aperture inserts are different from each other. The aperture inserts are arranged in an optical channel of a lens rod. The light flux adjusting device further comprises a driving unit which drives the aperture inserts to move to positions outside the optical channel of the lens rod. According to actual requirement, a plurality of aperture inserts with different luminous fluxes are configured. Because each aperture insert is fixed, the luminous flux which passes each aperture insert is fixed. The plurality of aperture inserts ensure multiple selections. The driving unit is arranged so that switching among the plurality of aperture inserts can be performed according to requirement. The light flux adjusting device has a simple and practical structure.

Description

Light flux regulating device

Technical field

The utility model relates to field of optical lens, particularly a kind of light flux regulating device.

Background technology

Commonly use optical lens at industrial circle, often relate to the adjusting of luminous flux.Traditional luminous flux regulative mode adopts mechanical knob, inwardly regulates a plurality of lenticular lenses whiles or, to inner rotary, reaches the purpose that reduces or increase logical light quantity.Because the method is to use the manual adjustments lenticular lenses to correct position, there is regulating error, the position accuracy in the time of can not guaranteeing at every turn to locate, therefore can't accurately control the size of luminous flux.

The utility model content

The purpose of this utility model is to provide a kind of light flux regulating device, size that can the accurate adjustment luminous flux.

For realizing above purpose, the technical solution adopted in the utility model is: a kind of light flux regulating device, comprise the aperture empiecement, and described aperture empiecement is furnished with two or more, the logical light quantity of each aperture empiecement is different, and described aperture empiecement is arranged in the light-path of camera lens bar; Also comprise the driver element outside the light-path that drives the aperture empiecement to move to the camera lens bar.

Compared with prior art, there is following technique effect in the utility model:

According to actual needs, be furnished with the different aperture empiecement of a plurality of logical light quantities, because each aperture empiecement is fixed, therefore guaranteed to determine by luminous flux wherein, a plurality of aperture empiecements have guaranteed multiple choices, being arranged so that of driver element can be switched on demand between several aperture empiecements, and this is simple and practical.

The accompanying drawing explanation

Fig. 1 is embodiment mono-structural representation of the present utility model;

Fig. 2 is embodiment bis-structural representations of the present utility model;

Fig. 3 is embodiment tri-structural representations of the present utility model;

Fig. 4 is the A-A cut-open view of Fig. 3;

Fig. 5 is the left side view of Fig. 2;

Fig. 6 a is that limit switch triggers view;

Fig. 6 b is the non-triggering view of limit switch.

Embodiment

Below in conjunction with Fig. 1 to Fig. 6, the utility model is done and is described in further detail:

Consult Fig. 1, Fig. 2, Fig. 3, a kind of light flux regulating device, comprise aperture empiecement 10, described aperture empiecement 10 is furnished with two or more, concrete quantity is set according to practical application, and the logical light quantity of each aperture empiecement 10 is different, and described aperture empiecement 10 is arranged in the light-path of camera lens bar 20, also comprise the driver element 30 outside the light-path that drives aperture empiecement 10 to move to camera lens bar 20, it should be noted that, the aperture empiecement 10 here has a plurality of, during use, generally that a light-path that is arranged in camera lens bar 20 is arranged, other several being positioned at outside light-path, effect by driver element 30, can change the aperture empiecement 10 that is arranged in light-path, because the logical light quantity of each aperture empiecement 10 is different, so just realized the adjusting of luminous flux when changing aperture empiecement 10, simultaneously, because aperture empiecement 10 luminous fluxes own are determined, so while also just having guaranteed that we select certain aperture empiecement 10, its logical light quantity keeps determining.

Realize that said aperture empiecement 10 is arranged in outside the light-path of camera lens bar 20 or light-path a variety of implementation methods are arranged: such as aperture empiecement 10 being arranged along a straight line equably on a square plate, realize the movement of aperture empiecement 10 by the translation square plate, as shown in Figure 1; The shaft core line of camera lens bar 20 of perhaps a plurality of aperture empiecements 10 being postponed is arranged, each aperture empiecement 10 has a shifting block that it is dialed to outside the light-path of camera lens bar 20, so in use, only the aperture empiecement 10 of needs need be stayed in light-path, outside the light-path of remaining dial-out camera lens bar 20, get final product, as shown in Fig. 2, Fig. 5.

Consult Fig. 3, Fig. 4, as preferred version of the present utility model, described aperture empiecement 10 is arranged on rotating disk 40, and the center of circle of each aperture empiecement 10 is positioned on same circumference, is also that the center of circle of each aperture empiecement 10 equates with the centre distance of rotating disk 40.Described rotating disk 40 rotates and makes aperture empiecement 10 be arranged in the light-path of camera lens bar 20 and overlap or be positioned at outside the light-path of camera lens bar 20 with camera lens bar 20 axle cores around axle 41.Compared to above-mentioned translation or axial arranged a plurality of, in the present embodiment, aperture empiecement 10 is arranged on rotating disk, this scheme takes up space less and can realize easily the movement of aperture empiecement 10.

For the movement that realizes aperture empiecement 10 is also the rotation of rotating disk 40, here preferably adopt following scheme: the periphery of described rotating disk 40 is furnished with gear, described driver element 30 comprises motor 31, motor fluted disc 32 and limit switch 33, described motor fluted disc 32 is meshed with the gear that rotating disk 40 peripheries are arranged, when described aperture empiecement 10 overlaps with camera lens bar 20 axle cores, limit switch 33 is triggered and controls motor 31 and stops operating.Like this, when motor 31 stops, one of them aperture empiecement 10 just in time is arranged in the light-path of camera lens bar 20.As long as press the switch of motor 31 while again changing, motor 31 is rotated again, when turning to next aperture empiecement 10 and being arranged in light-path, limit switch 33 is triggered again and again controls motor 31 and stop, and so circulation is gone down, and has realized the replacing of aperture empiecement 10.

As preferred version of the present utility model, on described rotating disk 40, offer run through card through hole 42 for placing described aperture empiecement 10, through hole 42 along the circumferential direction evenly interval arrange.Like this, rotating disk 40 can arrange a little bit smaller, and the above arranges that three aperture empiecements 10 commonly used get final product, and when these three aperture empiecements 10 do not meet the demands, can pull down replacing.

For guaranteeing the fixing of each parts, also comprise framework 50, described framework 50 is arranged on camera lens bar 20, and the two ends of described axle 41 are fixed on framework 50 by bearing, and described motor 31, limit switch 33 are fixed on framework 50.

The arrangement of limit switch 33 is various, and a kind of reference is provided here: described rotating disk 40 edges offer the breach 43 consistent with aperture empiecement 10 quantity, and each aperture empiecement 10 is provided with a breach 43 about the centrosymmetric opposite side of rotating disk 40; Described limit switch 33 comprises shell fragment 331 and contact 332, described shell fragment 331 is the shape that suspends and arranges, shell fragment 331 1 ends are fixed on the body of limit switch 33, and its end resilient abutment that suspends is in the edge of rotating disk 40, and shell fragment 331 contacts or is separated with contact 332.The detailed operating principle of limit switch 33 is as follows:

When rotating, rotating disk 40 make breach 43 just in time be positioned at shell fragment 331 place, end position that suspends, the elastic restoring force of shell fragment 331 self makes shell fragment 331 upspring, shell fragment 331 is separated with contact 332, as shown in Figure 6 a, now limit switch 33 is the triggering state, aperture empiecement 10 is arranged in the light-path of camera lens bar 20 and overlaps with camera lens bar 20 axle cores, and motor 31 stops operating, until press the switch of motor 31;

During edge outside an end that shell fragment 331 suspends is resisted against the breach 43 of rotating disk 40, the extruding that shell fragment 331 is subject to rotating disk 40 edges contacts with contact 332, as shown in Figure 6 b, now limit switch 33 is non-triggering state, and motor 31 continues to drive rotating disk 40 to rotate until limit switch 33 triggers.

Pay particular attention to, the rotation direction of rotating disk 40 is relevant with the direction that suspends of shell fragment 331, and when shell fragment 331 is arranged as shown in Figure 4, motor 31 drives rotating disk 40 to be rotated counterclockwise; When shell fragment 331, from the upper left corner, to the lower right corner, postpone while arranging, motor 31 drives rotating disk 40 to turn clockwise.

Claims (6)

1. a light flux regulating device, it is characterized in that: comprise aperture empiecement (10), described aperture empiecement (10) is furnished with two or more, and the logical light quantity of each aperture empiecement (10) is different, and described aperture empiecement (10) is arranged in the light-path of camera lens bar (20); Also comprise the driver element (30) outside the light-path that drives aperture empiecement (10) to move to camera lens bar (20).

2. light flux regulating device as claimed in claim 1, it is characterized in that: described aperture empiecement (10) is arranged on rotating disk (40), the center of circle of each aperture empiecement (10) is positioned on same circumference, and described rotating disk (40) rotates and makes aperture empiecement (10) be arranged in the light-path of camera lens bar (20) and overlap or be positioned at outside the light-path of camera lens bar (20) with camera lens bar (20) axle core around axle (41).

3. light flux regulating device as claimed in claim 2, it is characterized in that: the periphery of described rotating disk (40) is furnished with gear, described driver element (30) comprises motor (31), motor fluted disc (32) and limit switch (33), described motor fluted disc (32) is meshed with the gear that rotating disk (40) periphery is arranged, when described aperture empiecement (10) overlaps with camera lens bar (20) axle core, limit switch (33) is triggered and controls motor (31) and stops operating.

4. light flux regulating device as claimed in claim 2 is characterized in that: on described rotating disk (40), offer run through card through hole (42) for placing described aperture empiecement (10), through hole (42) along the circumferential direction evenly interval arrange.

5. light flux regulating device as claimed in claim 3, it is characterized in that: also comprise framework (50), described framework (50) is arranged on camera lens bar (20), it is upper that the two ends of described axle (41) are fixed on framework (50) by bearing, and described motor (31), limit switch (33) are fixed on framework (50).

6. light flux regulating device as claimed in claim 3, it is characterized in that: described rotating disk (40) edge offers the breach (43) consistent with aperture empiecement (10) quantity, and each aperture empiecement (10) is provided with a breach (43) about the centrosymmetric opposite side of rotating disk (40); Described limit switch (33) comprises shell fragment (331) and contact (332), described shell fragment (331) is the shape that suspends and arranges, one end of shell fragment (331) is fixed on the body of limit switch (33), its end resilient abutment suspended is in the edge of rotating disk (40), and shell fragment (331) contacts or is separated with contact (332).

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