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US 2005/0238348 A1Published application
Iris diaphragm device, diaphragm driving device and camera unit including the same, and diaphragm control method
AssigneeSamsung Electronics Co., Ltd.
InventorEui-kuen Oh
Life of this patent
Estimating the term…
Abstract
An iris diaphragm device has at least one lens shutter for adjusting the size of an aperture through which incident light passes. At least one ND filter is installed to move independently of the lens shutter, and reduces the amount of incident light by covering the aperture stopped down by the lens shutter.
Claims46
An iris diaphragm device of image photographing equipment, comprising:
- at least one lens shutter to adjust the size of an aperture through which incident light passes according to the position of the at least one lens shutter;
- and
- at least one ND filter installed to move independently of the at least one lens shutter to reduce the amount of incident light by covering the aperture stopped down by the lens shutter according to the position of the at least one ND filter.
An iris diaphragm device of image photographing equipment, comprising:
- at least one lens shutter to adjust an aperture through which light passes;
- at least one ND filter installed to move independently of the at least one lens shutter to reduce the amount of incident light by covering the aperture that is opened by the lens shutter;
- and
- a driving unit to drive the at least one ND filter and the at least one lens shutter so that the stopped down portion of the aperture by the at least one ND filter is varied in one section and is fixed in another section.
1 more element
A camera unit, comprising:
- a lens barrel;
- a zoom lens module housed in the lens barrel;
- a focusing lens module housed in the lens barrel;
- at least one lens shutter movably installed between the zoom lens module and the focusing lens module to adjust an aperture through which light passes through according to the position of the at least one lens shutter;
- a ND filter movably installed inside the lens barrel to reduce the amount of incident light by covering the aperture that is stopped down by the at least one lens shutter;
- and
- a driving unit installed inside the lens barrel to drive the lens shutter and the ND filter such that the stopped down portion of the aperture by the ND filter is varied in one section and is fixed in another section.
4 more elements
A method of controlling a diaphragm, the method comprising the steps of:
- moving at least one lens shutter to stop down an aperture that incident light passes through;
- and
- moving at least one ND filter to cover the stopped down aperture to reduce the amount of incident light, wherein the decrement of incident light is fixed or varied according to a change of the aperture size.
Dependencies are inferred from the claim text.