CN100451805C - Bevel gear drive light-regulating mechanism for photography system - Google Patents
Bevel gear drive light-regulating mechanism for photography system Download PDFInfo
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- CN100451805C CN100451805C CNB2006100165955A CN200610016595A CN100451805C CN 100451805 C CN100451805 C CN 100451805C CN B2006100165955 A CNB2006100165955 A CN B2006100165955A CN 200610016595 A CN200610016595 A CN 200610016595A CN 100451805 C CN100451805 C CN 100451805C
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Abstract
This invention belongs to optics- machine technology, which relates to a sort of light-control mechanism of the bevel gear in photography system. A couple of density circle install on two bevel gear between which has a angle of inclination separately. Using one component drive two bevel gears making two density circles rolling with different direction, so as to let the light refract and attenuate by the couple of density circle and then receive the optics density we wanted. Installing the density circle and bevel gears with filter coaxially; and using one component to drive two bevel gears with filter rolling. Filter off by the density circle without the background, as a result received different optics density color background in photographic procedure. This invention has simplicity structure, few components, less difficulty fabrication of parts, easy in adjusting the couple of density circle and bevel gears and accurate position fixing by adopting limit-location mechanism.
Description
Technical field
The invention belongs to the optical-mechanical technical field, relate to the dimming mechanism in a kind of camera chain.
Background technology
Because the variation of working environment makes the light intensity that incides on the main camera chain film weak inhomogeneous, target can not clearly be imaged onto on the film of main camera chain focal plane video camera in the optical system like this in photographic process.In order to obtain the optimum contrast of target and background, guarantee the image quality of optical system, adopt dimming mechanism that the power and the color that incide bias light on the film are controlled usually, make the background on the film that suitable optical density (OD) and suitable color be arranged.
The dimming mechanism of prior art comprises casing 1-10 shown in Fig. 1,2,3,4,5,6, the first motor 1-1, gear shaft 1-7, pot 1-8, the first double crosslinking gear shaft 1-14 is straight-awl duplicate gear 1-13, awl-awl duplicate gear 1-12, density dish back shaft 1-18, density dish spur gear 1-15, bevel gear shaft 1-16, transition axis 1-17, straight density dish 1-19, oblique density dish 1-20, gear case 1-22, the second motor 1-23, transmission shaft 1-26, optical filter 1-25, light inlet window 1-36, optical filter wheel 1-32, potentiometer 1-30.The first motor 1-1, pot 1-8 are fixedly mounted on the casing 1-10, the axle of the first motor 1-1 connects with the axle of gear shaft 1-7 and pot 1-8 by gear drive, and this gear drive comprises the first motor gear 1-2, straight-tooth double crosslinking gear shaft 1-3, straight-tooth duplicate gear 1-4, transition gear axle 1-5, transition gear 1-6, pot gear 1-9, spur gear 1-11; Gear shaft 1-7 is installed on the casing 1-10, connects with casing 1-10 is moving.The first double crosslinking gear shaft 1-14 is fixedly mounted on the casing 1-10; Density dish back shaft 1-18 is installed on the casing 1-10, connects with casing 1-10 is moving.Directly-and bore duplicate gear 1-13, awl-awl duplicate gear 1-12 to be installed on the first double crosslinking gear shaft 1-14, connect with the first double crosslinking gear shaft 1-14 is moving, the bevel gear of gear shaft 1-7 end meshes with straight-awl duplicate gear 1-13, awl-awl duplicate gear.Straight density dish 1-19 is fixedly mounted on the density dish back shaft 1-18, with the coaxial installation of density dish back shaft 1-18.Transition axis 1-17 is installed on the density dish back shaft 1-18, connect with density dish back shaft 1-18 is moving, the axis of transition axis 1-17 inclined shaft part has a relative inclination with the axis of density dish back shaft 1-18, the coaxial installation of inclined shaft part of bevel gear shaft 1-16 and transition axis 1-17, and both are for moving connection; Tiltedly density dish 1-20 is fixed on the end of bevel gear shaft 1-16, and coaxial with bevel gear shaft 1-16, makes straight density dish 1-19 and oblique density dish 1-20 that one relative inclination be arranged.Bevel gear shaft 1-16 and awl-awl duplicate gear 1-12 engagement.The density dish is fixedly mounted on the density dish back shaft 1-18 with spur gear 1-15, and with directly-awl duplicate gear 1-13 engagement.
The second motor 1-23 and potentiometer 1-30 are fixedly mounted on the gear case 1-22; Transmission shaft 1-26 is installed on the gear case 1-22, connect with gear case 1-22 is moving, and the axis of transmission shaft 1-26 and density dish back shaft 1-18 is on same straight line; Optical filter wheel 1-32 is fixedly mounted on the transmission shaft 1-26, and coaxial with transmission shaft 1-26; The axle of the second motor 1-23 connects with the axle of optical filter wheel 1-32 and potentiometer 1-30 by gear drive, and this gear drive comprises the second motor gear 1-24, the second double crosslinking gear shaft 1-27, the second duplicate gear 1-28, optical filtering transmission gear 1-29, potentiometer gear 1-31.Optical filter 1-25 and light inlet window 1-36 are fixedly mounted on the optical filter wheel 1-32, and along the circumferential direction evenly distribute.
The axle of the second motor 1-23 rotates, and drives optical filter wheel 1-32 and potentiometer 1-30 rotation simultaneously by gear drive, and optical filter wheel 1-32 rotates optical filter 1-25 and light inlet window 1-36 on it are along the circumferential direction moved.When the light inlet window 1-36 on the optical filter wheel 1-32 is corresponding with the position of incident light,, controls the second motor 1-23 and stop operating by potentiometer 1-30 feedback position signal.The axle of the first motor 1-1 rotates, axle by gear drive while driven gear axle 1-7 and pot 1-8 rotates, gear shaft 1-7 is by straight-awl duplicate gear 1-13 simultaneously, density dish spur gear 1-15, density dish back shaft 1-18 drives straight density dish 1-19 rotation, by awl-awl duplicate gear 1-12, bevel gear shaft 1-16 drives oblique density dish 1-20 and rotates round about, make incident light by straight density dish 1-19 and tiltedly density dish 1-20 generation refraction and decay, owing between straight density dish 1-19 and the oblique density dish 1-20 individual relative inclination is arranged, makes the parasitic reflection that on the second density dish, reflects beyond main optical path.When the light through straight density dish 1-19 and oblique density dish 1-20 refraction and decay satisfies the optical density (OD) of bias light needs, by pot 1-8 feedback position signal, control the first motor 1-1 and stop operating, the first motor 1-1 also can limit slewing area by travel switch 1-36.The axle of the second motor 1-23 rotates, and drives optical filter wheel 1-32 and potentiometer 1-30 rotation simultaneously by gear drive, and optical filter wheel 1-32 rotates the optical filter 1-25 on it is along the circumferential direction moved.When the optical filter of required color is corresponding with the position of incident light,, controls the second motor 1-23 and stop operating by potentiometer 1-30 feedback position signal.Light by straight density dish 1-19 and oblique density dish 1-20 refraction and decay passes through the light of background required color through optical filter more like this, leaches the light of other color, obtains required optical density (OD) of background and color.This dimming mechanism two density dishes control gear and pallet control gear are designed to two assemblies, and part is many, complex structure, and some part processing difficulty (as axle sleeve); The position of two density dishes and optical filter wheel is difficult for adjusting; Optical filter wheel is only by the angle range of automatically controlled programming restriction potentiometer, and is unfavorable to High Accuracy Control.
Summary of the invention
Many in order to solve the prior art part, complex structure, and some part processing difficulty, the position of two density dishes and optical filter wheel is difficult for the problem adjusted and optical filter wheel only limit potentiometer by automatically controlled programming angle range, to the disadvantageous problem of High Accuracy Control, the invention provides the bevel gear drive light-regulating mechanism in a kind of camera chain.
The density dishes that the present invention adopts one group of member to drive two mutual inclinations simultaneously rotate to different directions, make incident light through two density dishes refractions and decay; With straight density dish and the coaxial installation of the toothed disc that optical filter is installed, drive the toothed disc rotation that optical filter is installed with one group of member, make optical filter corresponding with the position of incident light, filter unwanted light in the light of superrefraction and decay by optical filter, and only allow the light of the required color of background pass through, thereby different optical density that needing in the photographic process to obtain and suitable color.
The present invention includes casing 2-10, the first motor 2-1, gear shaft 2-7, pot 2-8, straight bevel gear axle 2-17, straight density dish 2-19, spiral bevel gear axle 2-18, oblique density dish 2-20, position-limit mechanism 2-15, gear case 2-22, the second motor 2-23, optical filter 2-25, light inlet window 2-36, toothed disc 2-32, potentiometer 2-30; The first motor 2-1 and pot 2-8 are fixedly mounted on the casing 2-10, and gear shaft 2-7 is installed on the casing 2-10, connect with casing 2-10 is moving; The first motor 2-1 connects with the axle of gear shaft 2-7 and pot 2-8 by gear drive; Spiral bevel gear axle 2-18 is installed on the casing 2-10, connects with casing 2-10 is moving; Tiltedly density dish 2-20 is fixedly mounted on the spiral bevel gear axle 2-18, and 2-18 is coaxial with the spiral bevel gear axle; The tapered gear of spiral bevel gear axle 2-18 end and the engagement of the bevel gear of gear shaft 2-7 end; Straight bevel gear axle 2-17 is installed on the gear case 2-22, connects with gear case 2-22 is moving; Straight density dish 2-19 is fixedly mounted on the straight bevel gear axle 2-17, the bevel gear engagement of straight bevel gear axle 2-17 and gear shaft 2-7 end; The angle of cut between the axis of the axis of spiral bevel gear axle 2-18 and straight bevel gear axle 2-17 is 4 °～8 ° (angle is according to directly density dish 2-19 is definite with the optical parametric of oblique light path position, density dish 2-20 place, visual field size, optical system), and the angle of inclination between straight density dish 2-19 and the oblique density dish 2-20 is 4 °～8 °; Optical filter 2-25 and light inlet window 2-36 are fixedly mounted on the toothed disc 2-32, and toothed disc 2-32 is installed on the gear case 2-22, and 2-17 is coaxial with the straight bevel gear axle, and connect with gear case 2-22 is moving; Be processed with the conical shrinkage pool identical on the axle sleeve of toothed disc 2-32 with the quantity sum of optical filter and light inlet window; The axle of the second motor 2-23 is by spool connecting on gear drive and toothed disc 2-32 and the potentiometer 2-30; Position-limit mechanism 2-15 is positioned on the gear case 2-22, and position-limit mechanism 2-15 is corresponding along the position on the toothed disc 2-32 axle sleeve axis direction with conical shrinkage pool on the toothed disc 2-32 axle sleeve.
The course of work of the present invention: at first start the second motor 2-23, the axle of the second motor 2-23 rotates, by gear drive driven gear dish 2-32 and potentiometer 2-30 rotation simultaneously, when the position alignment of the position of the light inlet window 2-36 on the toothed disc 2-32 and incident light, potentiometer 2-30 feedback position signal, control the second motor 2-23 and stop operating, toothed disc 2-32 is owing to the effect of position-limit mechanism 2-15 is accurately located simultaneously.Start the first motor 2-1, the axle of the first motor 2-1 rotates, by gear drive driven gear axle 2-7 pot 2-8 rotation simultaneously, drive spiral bevel gear axle 2-18 and straight bevel gear axle 2-17 rotation round about simultaneously by gear shaft 2-7, making oblique density dish 2-20 is the center rotation with the axis of spiral bevel gear axle 2-18, straight density dish 2-19 is that middle mind-set is rotated with the direction that tiltedly density dish 2-20 is opposite with the axis of straight bevel gear axle 2-17, the light that shines on oblique density dish 2-20 reflects and decay through oblique density dish 2-20 and straight density dish 2-19, since tiltedly density dish 2-20 with directly between the density dish 2-19 a mutual inclination angle is arranged, make that the veiling glare of the secondary reflection that produces is counter to go out main optical path on the second density dish; When context request is satisfied in the brightness of penetrating through light inlet window 2-36 by the light of oblique density dish 2-20 and straight density dish 2-19 refraction and decay,, control the first motor 2-1 and stop operating by pot 2-8 feedback position signal; The first motor 2-1 also can control slewing area with travel switch 2-36.Start the second motor 2-23, the axle of the second motor 2-23 rotates, by gear drive driven gear dish 2-32 and potentiometer 2-30 rotation simultaneously, when the position alignment of the position of the optical filter of the background required color on the toothed disc 2-32 and incident light, potentiometer 2-30 feedback position signal, control the second motor 2-23 and stop operating, toothed disc 2-32 is owing to the effect of position-limit mechanism 2-15 is accurately located simultaneously.
Beneficial effect: the present invention is installed in two density dishes respectively on two bevel gear shafts that an inclination angle arranged mutually, adopt one group of member to drive two bevel gear shafts rotations simultaneously two density dishes that tilt are mutually rotated to different directions, make incident light obtain the required optical density (OD) of photographing through two density dishes refractions and decay; With straight density dish and the coaxial installation of the toothed disc that optical filter is installed, and the toothed disc that optical filter is installed with one group of member drive rotates, by optical filter filter by in the light of density dish refraction and decay except that background required color light the light of wavelength, thereby the color background of the different optical density that needing in the photographic process to obtain.The present invention is simple in structure, part is few, and the part processing difficulty is little, and the position of two density dishes and toothed disc is adjusted easily, and owing to adopt the location of position-limit mechanism, the toothed disc location positioning is accurate.
Description of drawings
Fig. 1 is a prior art density dish assembly front view.1-36 is a travel switch among the figure.
Fig. 2 is that the H-H of Fig. 1 is to view.1-1 is first motor among the figure, 1-2 first motor gear, 1-3 straight-tooth double crosslinking gear shaft, 1-4 straight-tooth duplicate gear, 1-5 transition gear axle, 1-6 transition gear, 1-7 gear shaft, 1-8 pot, 1-9 pot gear, 1-11 spur gear.
Fig. 3 is that the F-F of Fig. 1 is to view.1-7 is a gear shaft among the figure, 1-11 spur gear, 1-12 awl-awl duplicate gear, the straight density dish of 1-19, the oblique density dish of 1-20, the 1-16 bevel gear shaft, 1-18 density dish back shaft, 1-13 is straight-the awl duplicate gear, the 1-10 casing, 1-14 first double crosslinking gear shaft, 1-15 density dish spur gear, 1-17 transition axis.
Fig. 4 is a prior art optical filter box front view.1-30 potentiometer among the figure.
Fig. 5 is that the A-A of Fig. 4 is to view.1-23 is second motor among the figure, 1-22 gear case, 1-24 second motor gear, 1-25 optical filter, 1-36 light inlet window, 1-32 optical filter wheel, 1-26 transmission shaft, 1-27 second double crosslinking gear shaft, 1-28 second duplicate gear, 1-29 optical filtering transmission gear.
Fig. 6 is that the B-B of Fig. 4 is to view.1-31 is the potentiometer gear among the figure.
Fig. 7 is a front view of the present invention, also is Figure of abstract.2-10 is a casing among the figure, 2-18 spiral bevel gear axle, the oblique density dish of 2-20,2-15 position-limit mechanism, 2-13 outside cylinder cylindrical shell, 2-14 inner cylindrical tube body, 2-17 straight bevel gear axle, the straight density dish of 2-19,2-25 optical filter, 2-32 toothed disc.
Fig. 8 is that the A-A of Fig. 7 is to view.2-25 is an optical filter among the figure, the 2-36 light inlet window.
Fig. 9 is that the B-B of Fig. 8 is to view.2-23 is second motor among the figure, 2-24 second motor gear, 2-27 second double crosslinking gear shaft, 2-28 second duplicate gear, 2-25 optical filter, 2-32 toothed disc, 2-13 outside cylinder cylindrical shell, 2-14 inner cylindrical tube body, 2-17 straight bevel gear axle, 2-22 gear case, 2-29 the 3rd double crosslinking gear shaft, 2-12 the 3rd duplicate gear, 2-31 potentiometer gear, 2-30 potentiometer.
Figure 10 is a vertical view of the present invention.
Figure 11 for the C-C of Figure 10 of the present invention to view.It among the figure 2-36 travel switch.
Figure 12 for the D-D of Figure 11 of the present invention to view.2-1 is first motor among the figure, 2-2 first motor gear, 2-3 straight-tooth double crosslinking gear shaft, 2-4 straight-tooth duplicate gear, 2-5 transition gear axle, 2-6 transition gear, 2-7 gear shaft, 2-11 gear wheel, the 2-21 pinion wheel, 2-9 pot gear, 2-8 pot, 2-10 casing.
Figure 13 is a position-limit mechanism 2-15 partial enlarged view of the present invention.2-15 is position-limit mechanism, 2-33 spring housing nail, the spacing stage clip of 2-34,2-35 steel ball among the figure, 2-10 casing, 2-32 toothed disc.
Embodiment
As shown in figure 12, the first motor 2-1, pot 2-8 are fixedly mounted on the tank wall of casing 2-10; Gear drive between the first motor 2-1 and gear shaft 2-7 and the pot 2-8 comprises the first motor gear 2-2, straight-tooth double crosslinking gear shaft 2-3, straight-tooth duplicate gear 2-4, transition gear axle 2-5, transition gear 2-6, gear shaft 2-7, gear wheel 2-11, pinion wheel 2-21, pot gear 2-9.Straight-tooth double crosslinking gear shaft 2-3 and transition gear axle 2-5 are installed on the tank wall of casing 2-10 as support by bearing, and both axis normal are in the tank wall of casing 2-10.The first motor gear 2-2 is fixed on the axle of the first motor 2-1 with pin; Straight-tooth duplicate gear 2-4 and transition gear 2-6 are fixedly mounted on straight-tooth double crosslinking gear shaft 2-3 and the transition gear axle 2-5 with pin respectively, and transition gear 2-6 adopts duplicate gear; Gear wheel 2-11 and pinion wheel 2-21 are fixedly mounted on the gear shaft 2-7 with pin; Pot gear 2-9 is fixedly mounted on the axle of pot 2-8 with pin; The gear wheel engagement of the first motor gear 2-2 and straight-tooth duplicate gear 2-4, the pinion wheel of straight-tooth duplicate gear 2-4 and the engagement of the gear wheel of transition gear 2-6, the pinion wheel of transition gear 2-6 and gear wheel 2-11 engagement, pinion wheel 2-21 and pot gear 2-9 engagement.
As shown in Figure 7, spiral bevel gear axle 2-18 is installed on the casing 2-10 as support by bearing, connects with casing 2-10 is moving; Tiltedly density dish 2-20 is coaxial with spiral bevel gear axle 2-18, is fixedly mounted on the spiral bevel gear axle 2-18 bevel gear of spiral bevel gear axle 2-18 end and the engagement of the bevel gear of gear shaft 2-7 end.As shown in Figure 8, three different colours (orange, yellow, middle Huang) circular filter 2-25 and light inlet window 2-36 evenly distribute and are fixedly mounted on the toothed disc 2-32, and the center of circle of orange, yellow, middle yellow optical filter 2-25 and light inlet window 2-36 is positioned on the same circumference.As shown in Figure 7, on the tank wall of gear case 2-22, be processed with coaxial outside cylinder cylindrical shell 2-13 and inner cylindrical tube body 2-14, the axle sleeve of toothed disc 2-32 is installed among the outside cylinder cylindrical shell 2-13 and the gap between the inner cylindrical tube body 2-14 of gear case 2-22 as support by bearing, and the sleeve outer surface of toothed disc 2-32 is processed with along equally distributed four the conical shrinkage pools of circumference.Straight density dish 2-19 is fixedly mounted on the straight bevel gear axle 2-17 with straight bevel gear axle 2-17 is coaxial; Straight bevel gear axle 2-17 is installed in the inner cylindrical tube body 2-14 endoporus of gear case 2-22 by bearing as support; The bevel gear of straight bevel gear axle 2-17 end and the engagement of the bevel gear of gear shaft 2-7 end; The mutual inclination angle of axis of the axis of spiral bevel gear axle 2-18 and straight bevel gear axle 2-17 is 7 ° (angle is according to directly density dish 2-19 is definite with the optical parametric of oblique light path position, density dish 2-20 place, visual field size, optical system), and the angle of inclination between straight density dish 2-19 and the oblique density dish 2-20 is 7 °.
As shown in figure 13, above-mentioned position-limit mechanism 2-15 comprises spring housing nail 2-33, spacing stage clip 2-34, steel ball 2-35.Spring housing nail 2-33, spacing stage clip 2-34, steel ball 2-35 are installed in the through hole on the outside cylinder cylindrical shell 2-13 barrel, and this through hole is corresponding along the position on toothed disc (2-32) the axle sleeve axis direction with conical shrinkage pool on toothed disc (2-32) axle sleeve; Spacing stage clip 2-34 places in the axial hole of spring housing nail 2-33, and steel ball 2-35 is between spacing stage clip 2-34 and toothed disc 2-32 sleeve outer surface.
Gear drive between the axle of the second motor 2-23 and toothed disc 2-32 and potentiometer 2-30 as shown in Figure 9, the second motor 2-23, potentiometer 2-30 are fixedly mounted on the tank wall of gear case 2-22, and the second double crosslinking gear shaft 2-27, the 3rd double crosslinking gear shaft 2-29 are installed on the tank wall of gear case 2-22 as support by bearing.The second motor gear 2-24 is fixed on the axle of the second motor 2-23 with pin, the second duplicate gear 2-28 and the 3rd duplicate gear 2-12 are fixed on the second double crosslinking gear shaft 2-27 and the 3rd double crosslinking gear shaft 2-29 with pin respectively, and potentiometer gear 2-31 is fixed on the axle of potentiometer 2-30 with pin.The gear wheel engagement of the second motor gear 2-24 and the second duplicate gear 2-28; The pinion of potentiometer gear 2-31 and the 3rd double crosslinking gear shaft 2-29; The gear wheel of the pinion wheel of the second duplicate gear 2-28 and the 3rd double crosslinking gear shaft 2-29 and toothed disc 2-32 engagement.
Claims (4)
1, the bevel gear drive light-regulating mechanism in a kind of camera chain comprises casing, first motor, gear shaft, pot, straight density dish, oblique density dish, gear case, second motor, optical filter, light inlet window, potentiometer; First motor and pot are fixedly mounted on the casing, and gear shaft is installed on the casing, connect with casing is moving; First motor connects with gear shaft and potentiometric axle by gear drive; The axle of second motor is by spool connecting on gear drive and the potentiometer; It is characterized in that also comprising straight bevel gear axle (2-17), spiral bevel gear axle (2-18), position-limit mechanism (2-15), toothed disc (2-32); Spiral bevel gear axle (2-18) is installed on the casing (2-10), connects with casing (2-10) is moving; Tiltedly density dish (2-20) is fixedly mounted on the spiral bevel gear axle (2-18), and (2-18) is coaxial with the spiral bevel gear axle; The bevel gear engagement of the tapered gear of spiral bevel gear axle (2-18) end and gear shaft (2-7) end; Straight bevel gear axle (2-17) is installed on the gear case (2-22), connects with gear case (2-22) is moving; Straight density dish (2-19) is fixedly mounted on the straight bevel gear axle (2-17), and straight bevel gear axle (2-17) meshes with the bevel gear of gear shaft (2-7) end; The angle of cut between the axis of the axis of spiral bevel gear axle (2-18) and straight bevel gear axle (2-17) is 4 °～8 °, and the angle of inclination between straight density dish (2-19) and the oblique density dish (2-20) is 4 °～8 °; Optical filter (2-25) and light inlet window (2-36) are fixedly mounted on the toothed disc (2-32), and toothed disc (2-32) is installed on the gear case (2-22), and (2-17) is coaxial with the straight bevel gear axle, and connect with gear case (2-22) is moving; Be processed with the conical shrinkage pool identical on the axle sleeve of toothed disc (2-32) with the quantity sum of optical filter and light inlet window; Position-limit mechanism (2-15) is positioned on the gear case (2-22), and position-limit mechanism (2-15) is corresponding along the position on toothed disc (2-32) the axle sleeve axis direction with conical shrinkage pool on toothed disc (2-32) axle sleeve.
2, the bevel gear drive light-regulating mechanism in the camera chain according to claim 1 is characterized in that the axis of spiral bevel gear axle (2-18) and the mutual inclination angle of axis of straight bevel gear axle (2-17) are 7 °; Angle of inclination between straight density dish (2-19) and the oblique density dish (2-20) is 7 °.
3, the bevel gear drive light-regulating mechanism in the camera chain according to claim 1, it is characterized in that being processed with on the tank wall of gear case (2-22) coaxial outside cylinder cylindrical shell (2-13) and inner cylindrical tube body (2-14), the axle sleeve of toothed disc (2-32) is installed in the outside cylinder cylindrical shell (2-13) and the gap between the inner cylindrical tube body (2-14) of gear case (2-22) by bearing as support; Straight bevel gear axle (2-17) is installed in inner cylindrical tube body (2-14) endoporus of gear case (2-22) as support by bearing.
4, the bevel gear drive light-regulating mechanism in the camera chain according to claim 3 is characterized in that position-limit mechanism (2-15) comprises spring housing nail (2-33), spacing stage clip (2-34), steel ball (2-35); Spring housing nail (2-33), spacing stage clip (2-34), steel ball (2-35) are installed in the through hole on outside cylinder cylindrical shell (2-13) barrel, and this through hole is corresponding along the position on toothed disc (2-32) the axle sleeve axis direction with conical shrinkage pool on toothed disc (2-32) axle sleeve; Spacing stage clip (2-34) places in the axial hole of spring housing nail (2-33), and steel ball (2-35) is positioned between spacing stage clip (2-34) and toothed disc (2-32) sleeve outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100165955A CN100451805C (en) | 2006-02-22 | 2006-02-22 | Bevel gear drive light-regulating mechanism for photography system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100165955A CN100451805C (en) | 2006-02-22 | 2006-02-22 | Bevel gear drive light-regulating mechanism for photography system |
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| Publication Number | Publication Date |
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| CN101025541A CN101025541A (en) | 2007-08-29 |
| CN100451805C true CN100451805C (en) | 2009-01-14 |
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| JP2005250305A (en) * | 2004-03-08 | 2005-09-15 | Canon Inc | Filter disk |
| CN1734295A (en) * | 2004-08-13 | 2006-02-15 | 精碟科技股份有限公司 | Coating apparatus for color drum filter |
| CN2876833Y (en) * | 2006-02-22 | 2007-03-07 | 中国科学院长春光学精密机械与物理研究所 | Light modulating mechanism for photographing system |
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| Publication number | Publication date |
|---|---|
| CN101025541A (en) | 2007-08-29 |
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