Electronic imaging apparatus with anti-dust function

88 Pages·2013·5.6 MB·English

US 20040047625A1
(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2004/0047625 A1
Ito et al. (43) Pub. Date: Mar. 11, 2004
(54) ELECTRONIC IMAGING APPARATUS WITH Jun. 25, 2002 (JP) ....................................... .. 2002-18459
ANTI-DUST FUNCTION Jun. 28, 2002 (JP) . . . . . . . . . . . . .. 2002-191112
Jul. 18, 2002 (JP) ....... .. 2002-209733
(76) Inventors: J unichi Ito, Fuchu-shi (JP); Sumi0 Aug. 29, 2002 (JP) .................................... .. 2002-250826
Kawai, Hachioji-shi (JP); Hiroyuki
Takizawa, Chofu-shi (JP) Publication Classi?cation
Correspondence Address: (51) Int. Cl.7 ................................................... .. G03B 17/48
STRAUB & POKOTYLO (52) US. Cl. ............................................................ .. 396/429
620 TINTON AVENUE
BLDG. B, 2ND FLOOR
TINTON FALLS, NJ 07724 (US) (57) ABSTRACT
(21) APPL NO; 10/438,756 An electronic imaging apparatus includes an imaging optical
system which forms an optical image of an object. A
(22) Filed; May 15, 2003 photoelectric conversion elernent converts the optical image
into an electric signal. The optical element is arranged
(30) Foreign Application Priority Data betWeen the imaging optical system and the photoelectric
conversion elernent. An excitation unit vibrates the optical
May 17, 2002 (JP) .................................... .. 2002-142703 element at a set frequency, and vibrates the optical element
Jun. 12, 2002 (JP) .................................... .. 2002-171625 at least in an imaging operation of the photoelectric con
Jun. 24, 2002 (JP) .................................... .. 2002-183269 version element.
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Patent Application Publication Mar. 11, 2004 Sheet 1 0f 42 US 2004/0047625 A1
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Patent Application Publication Mar. 11, 2004 Sheet 3 0f 42 US 2004/0047625 A1
Patent Application Publication Mar. 11, 2004 Sheet 4 0f 42 US 2004/0047625 A1
FIG.4
Patent Application Publication Mar. 11, 2004 Sheet 5 0f 42 US 2004/0047625 A1
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Patent Application Publication Mar. 11, 2004 Sheet 6 0f 42 US 2004/0047625 A1
Patent Application Publication Mar. 11, 2004 Sheet 7 0f 42 US 2004/0047625 A1
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Patent Application Publication Mar. 11, 2004 Sheet 8 0f 42 US 2004/0047625 A1
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( Imaging operation )
V
Instruct start of imaging
operation
#041
Exposure
control second time elapsed
@ration .
. ‘P
Yes
removi. ng operaDtluosnt predeterm. m
time elapsed '?
88
V
Stop dust removing operation
(P_PwCont <—L0)
V
< Return )
Patent Application Publication Mar. 11, 2004 Sheet 9 of 42 US 2004/0047625 A1
Operation of Bucom
mall setting operation when activating systen’r\/#000
I
ead drive time Tosc and drive fr uenc
IzNoscl, from EEPROM) eq y ~#001
I .
I Output Nosc from D_NCnt to counter I~#002
LStart dust removing operation (P_PwCont<-Hi)_I~ #003
I Wait for predetermined time (Tosc) I~#004
I
IStop dust removing operation (P_pwCont<—Lo)I\1#005
l
Attachment/detachment detecting operation
“1 #006
of im in lens
I
( ls attachment of lens detected ’? \YESF
#008\J\ IN0 #007
Is removal of ens detected '? >
YES v
I Reset F_Lens (‘-0) | I Reset F_Lens (‘-1) I~#0i0
#OOQ’J ‘ I Start dust removing operation (P_PwCont<—Hi) I»#011
r l -
I Wait for predetermined time (Tosc)
|
[Stop dust removing operation (P_pwCont*-Lo) I~#()13
I ‘Read operat on SW state /I\/#014
#01 5% ‘ N 0
( ls 1st release SW operated ?- >
I Yes
Measure object brightness and calculate Tv/\,#015
va ue
r
Detect defocus quantity by controller AF ,
wiim 7
sensor
State of 1 F_Lens ? >0 7 (is power supply SW turned 0H3Ni
Yes
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Control'to drive imaging lens I ( End )
#OZOVW I
No
Is 2nd release SW operated ? l
I Yes
IStart dust removing operation (P_PwCont<-Hi)Iv#02l
Stop dust removing operation
L Diaphragm control of imging lens ##022
(P_pwCont<-L0)
I
L Mirror up control I~#023 l
Mirror DOWN control/ hutter char e
I
I Shutter OPEN control H1024 control (P_pwCont<—Lo$§ ‘ g
I I
II imaging operation II~#025 I Diaphragm control of imaging len?img
I Shutter CLOSE control I»#026 [Recording operatioI n of imaging dataI/#030
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