CN101174074B - Shutter device of polarizer film - Google Patents
Shutter device of polarizer film Download PDFInfo
- Publication number
- CN101174074B CN101174074B CN2006100634572A CN200610063457A CN101174074B CN 101174074 B CN101174074 B CN 101174074B CN 2006100634572 A CN2006100634572 A CN 2006100634572A CN 200610063457 A CN200610063457 A CN 200610063457A CN 101174074 B CN101174074 B CN 101174074B
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- polaroid
- electromagnet
- pair
- shutter device
- polarizer
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- Shutters For Cameras (AREA)
Abstract
The invention relates to a polarizer shutter device used for controlling exposure, comprising a first polarizer, a second polarizer arranged alternately with the first polarizer, and a driving device arranged on the second polarizer, wherein, the optic axis of the first polarizer is constant; the central axes of the first polarizer and the second polarizer are on the same line; the second polarizer is driven via the driving device to rotate around the central axis, so as to change the angle of the optic axis of the second polarizer relative to the optic axis of the first polarizer. The invention has the advantages that the bright light or parasitic light entering the lens are filtered, and the shooting effect and photograph quality are improved due to the light filter function of the first and the second polarizer.
Description
Technical field
The present invention relates to a kind of camera shutter device, particularly a kind of camera shutter device of polarizer film.
Background technology
Existing camera shutter is generally mechanical shutter, and it is divided into two kinds at between-lens shutter and cord shutter.Between-lens shutter claims central shutter again, in the centre of camera lens, is made up of 3 to 5 stalloys or the made blade of other special material, by the relaxation and the leverage of spring, makes blade opening and closing simultaneously, comes the sense of control optical element time shutter with blade opening and closing speed.The cord shutter claims focal plane shutter again, is contained in the front that the fuselage rear wall is placed photo-sensitive cell, near focal plane.This shutter is to make with rubberized fabric or sheet metal.The speed of shutter speed is regulated according to the size of breach between the two leaf cords.When behind the shutter opening about cord or inswept up and down picture, light in moment by cord between breach be mapped on the photo-sensitive cell, make the photo-sensitive cell exposure.
Existing a kind of camera shutter device is made up of shutter winding-up system, kinematic train and shutter disk, the quilling wheel of winding-up system and upper guiding key engagement, and it axially is with stage clip, is entrenched in the driving lever; The upper guiding key other end is connected with cam; Driving lever is inserted in the through hole of kickplate one side, and opposite side is by fixedly kickplate extension spring of projection.During use, tighten by quilling wheel and upper guiding key engagement shutter, stage clip elongates, and two extension springs lock shutter disk rapidly, finish single exposure.
Above-mentioned mechanical shutter is that mechanical type control shutter disk exposes, and this shutter device can not stop some veiling glares, strong excessively light or reflective entering among the camera lens, causes the decline of photographic quality, has reduced shooting effect.
Summary of the invention
In view of this, be necessary to provide a kind of shutter device of polarizer film that can improve shooting effect.
A kind of shutter device of polarizer film is used for the control exposure, comprises one first polaroid, second polaroid and a drive unit that is arranged on this second polaroid that is provided with at interval with this first polaroid.The central shaft of constant and described first, second polaroid of the optical axis direction of described first polaroid point-blank.Described second polaroid can rotate along its central shaft under described drive unit drives, with the optical axis of conversion second polaroid angle with respect to the optical axis of first polaroid.
This shutter device of polarizer film is finished exposure under the mating reaction of first, second polaroid and drive unit, utilize the filter action of polaroid simultaneously, has filtered the high light or the veiling glare that enter in the camera lens, thereby has improved shooting effect, has improved photographic quality.
Description of drawings
Structural representation when Fig. 1 is shutter device of polarizer film unexposed of the embodiment of the invention;
Structural representation when Fig. 2 is the exposure of shutter device of polarizer film of Fig. 1.
Embodiment
For the present invention being done further explanation, lift a preferred embodiment and conjunction with figs. and be described in detail as follows.
See also Fig. 1, the shutter device of polarizer film of present embodiment comprises that 11, one of one first polaroids are provided with second polaroid 12 and a drive unit 13 that links to each other with second polaroid at interval with first polaroid 11.
The optical axis direction of described first polaroid 11 is constant, is arranged in the camera (figure does not show).
Described second polaroid 12 can be along its central shaft rotation.This second polaroid 12 is arranged in the camera (figure does not show), and the distance between first, second polaroid 11,12 is set as required.
When this shutter device was closed, this second polaroid 12 was vertical with the optical axis direction of first polaroid 11, and the central shaft of first, second polaroid 11,12 point-blank.
This first, second polaroid 11,12 can be vertical orientated configuration polaroid.
Described drive unit 13 can be magnet control loop or mechanical electric device, and present embodiment adopts the magnet control loop.
This drive unit 13 comprise a pair of permanent magnet 131a, 131b, first couple of electromagnet 132a, 132b, second couple of electromagnet 133a, 133b and with this first couple of electromagnet 132a, 132b, second pair of circuit loop 134 that electromagnet 133a, 133b are connected.
This permanent magnet 131a, 131b are arranged on second polaroid 12 along its diametric(al) and outside the two ends of described second polaroid, 12 diameters.
This first couple of electromagnet 132a, 132b and second couple of electromagnet 133a, 133b are provided with along these second polaroid, 12 diametric(al)s and at the diameter two ends of this second polaroid 12 respectively.Described first couple of electromagnet 132a, 132b and second couple of electromagnet 133a, 133b are wired to a right angle or acute angle.Preferably, in the present embodiment line of second couple of electromagnet 133a, 133b and described permanent magnet 131a, 131b be wired to a right angle.
This first couple of electromagnet 132a, 132b and second couple of electromagnet 133a, 133b respectively with these second polaroid 12 preset distance settings at interval so that described second polaroid 12 and described permanent magnet 131a, 131b can rotate in first couple of electromagnet 132a, 132b and second pair of formed incircle of electromagnet 133a, 133b.The spacing distance of described first couple of electromagnet 132a, 132b, second couple of electromagnet 133a, 133b and second polaroid 12 is provided with as required.
Described circuit loop 134 comprises a power supply 135, a switch 136 and an adjustment element 137.This power supply 135 optionally provides voltage for first couple of electromagnet 132a, 132b and second couple of electromagnet 133a, 133b, so that this first couple of electromagnet 132a, 132b or second couple of electromagnet 133a, 133b produce magnetic.This switch 136 can be a selector switch, and the electric current that is used to power supply 135 is produced switches between first couple of electromagnet 132a, 132b and second couple of electromagnet 133a, 133b.This adjustment element 137 is used to adjust the size by the electric current of first couple of electromagnet 132a, 132b or second couple of electromagnet 133a, 133b.
Please consult Fig. 1 again, be the unexposed state of this shutter device, at this moment, switch 136 is communicated with first couple of electromagnet 132a, 132b, the magnetic pole that this first couple of electromagnet 132a, 132b produce magnetic and this first couple of electromagnet 132a, 132b is opposite with the magnetic pole of permanent magnet 131a, 131b, this moment, the optical axis direction of first, second polaroid 11,12 was orthogonal, and light can not pass through this shutter device.
See also Fig. 2, switch is communicated with second couple of electromagnet 133a, 133b, the magnetic pole that this second couple of electromagnet 133a, 133b produce magnetic and this second couple of electromagnet 132a, 132b is opposite with the magnetic pole of permanent magnet 131a, 131b, simultaneously the electric current of first couple of electromagnet 132a, 132b disconnects, this first couple of electromagnet 132a, 132b magnetic disappear.Under the acting in conjunction of second couple of electromagnet 133a, 133b and permanent magnet 131a, 131b, second polaroid 12 rotates to the optical axis direction position at angle with first polaroid 11, the optical axis direction of second polaroid 12 and first polaroid 11 is parallel to each other in the present embodiment, this moment, light can pass through this shutter device, finished exposure.
Be appreciated that, the present invention can also adopt mechanical electric device, this machinery electric device can be arranged on second polaroid 12, be used to control the rotation of second polaroid 12, so that the optical axis direction of this second polaroid 12 and first polaroid 11 is orthogonal or at angle, the size of this angle is set as required, thereby finishes the closure and the unlatching of this shutter device of polarizer film.
This shutter device of polarizer film is provided with first, second polaroid 11,12, under the mating reaction of this first, second polaroid 11,12, finished exposure, simultaneously because the filter action of first, second polaroid 11,12, can eliminate the strong light of veiling glare or light limit, thereby improved the shooting effect of camera, improved photographic quality.
In addition, those skilled in the art also can do other variation in spirit of the present invention, as long as it does not depart from technique effect of the present invention, all should be included within the present invention's scope required for protection.
Claims (7)
1. shutter device of polarizer film, be used for the control exposure, it is characterized in that: comprise one first polaroid, second polaroid and a drive unit that is arranged on this second polaroid that is provided with at interval with this first polaroid, the optical axis direction of described first polaroid is constant and described first, the central shaft of second polaroid point-blank, described second polaroid drives its central shaft of lower edge at described drive unit and rotates, with the optical axis of conversion second polaroid angle with respect to the optical axis of first polaroid, described drive unit is the magnet control loop, described magnet control loop is included in the opposite permanent magnet of a pair of magnetic pole of this second polaroid fixedly connected setting in diameter two ends, along the diametric(al) of this second polaroid and the first couple who is provided with respectively at these diameter two ends, the second pair of electromagnet and with this first couple, second pair of control loop that the electromagnet selectivity connects, the line of described first pair of electromagnet and second pair of electromagnet be wired to a right angle or acute angle, and the described first pair of electromagnet and the second pair of electromagnet respectively with the preset distance setting at interval of this second polaroid, so that described second polaroid and permanent magnet can be at first pairs, second pair of interior rotation of incircle that electromagnet forms, described first pair, second pair of electromagnet position in the rotation process of second polaroid and permanent magnet is constant.
2. shutter device of polarizer film as claimed in claim 1 is characterized in that: described polaroid is vertical orientated configuration polaroid.
3. shutter device of polarizer film as claimed in claim 1 is characterized in that: this shutter device of polarizer film is when unexposed, and the optical axis direction of first, second polaroid is orthogonal.
4. shutter device of polarizer film as claimed in claim 1 is characterized in that: described shutter device of polarizer film is in when exposure, and the optical axis direction of first, second polaroid is parallel or at angle.
5. shutter device of polarizer film as claimed in claim 1 is characterized in that: described first, second spacing distance to the electromagnet and second polaroid is provided with as required.
6. shutter device of polarizer film as claimed in claim 1 is characterized in that: this control loop comprises a switch, and a power supply and is adjusted element, is used to control the "on" position of described first pair, second pair electromagnet.
7. shutter device of polarizer film as claimed in claim 6 is characterized in that: this switch is a selector switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100634572A CN101174074B (en) | 2006-11-03 | 2006-11-03 | Shutter device of polarizer film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100634572A CN101174074B (en) | 2006-11-03 | 2006-11-03 | Shutter device of polarizer film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101174074A CN101174074A (en) | 2008-05-07 |
| CN101174074B true CN101174074B (en) | 2010-09-29 |
Family
ID=39422660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100634572A Expired - Fee Related CN101174074B (en) | 2006-11-03 | 2006-11-03 | Shutter device of polarizer film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101174074B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763451A (en) * | 2014-01-13 | 2014-04-30 | 上海邮政科学研究院 | Method and equipment for eliminating exposure points in window letter illumination picture taking process |
| CN105516555A (en) * | 2015-11-26 | 2016-04-20 | 努比亚技术有限公司 | Camera module and mobile terminal |
| CN108347503A (en) * | 2018-01-29 | 2018-07-31 | 维沃移动通信有限公司 | A kind of terminal device and its control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5705873A (en) * | 1993-12-22 | 1998-01-06 | Canon Denshi Kabushiki Kaisha | Light-quantity control device |
-
2006
- 2006-11-03 CN CN2006100634572A patent/CN101174074B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5705873A (en) * | 1993-12-22 | 1998-01-06 | Canon Denshi Kabushiki Kaisha | Light-quantity control device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-169195A 2002.06.14 |
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| Publication number | Publication date |
|---|---|
| CN101174074A (en) | 2008-05-07 |
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Granted publication date: 20100929 Termination date: 20151103 |
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