Viewfinder structure of image-capturing apparatus with adjustable focal length
AssigneePrimax Electronics Ltd.
InventorHsi-Hsin Loo
Life of this patent
Estimating the term…
Abstract
A viewfinder of an image-capturing apparatus is provided. The image-capturing apparatus includes a first focusing device having an adjustable focal length. The viewfinder includes a second focusing device and an image-field selecting member. The second focusing device has a fixed focal length for focusing an image to be captured on an observer's eye, and the image-field selecting member is disposed downstream of the second focusing device for adjusting an area of the image viewed by the observer's eye according to a focal-length change of the first focusing device.
Claims16
A viewfinder of an image-capturing apparatus, said image-capturing apparatus including a first focusing device having an adjustable focal length, said viewfinder comprising:
- a second focusing device of a fixed focal length for focusing an image to be captured on an observer's eye;
- and
- an image-field selecting member disposed downstream of said second focusing device for adjusting an area of said image viewed by said observer's eye according to a focal-length change of said first focusing device.
A viewfinder of an image-capturing apparatus, said image-capturing apparatus realizing various fields of image via a focal-length adjustable focusing device, and showing a selected field of image to be realized on said viewfinder, said viewfinder comprising:
- a window on which said selected field of image to be realized is shown;
- and
- a mask member cooperating with said window for sheltering a variable portion of said window according to different focal lengths of said focusing device so as to exhibit said selected field of image on the unsheltered portion of said window.
The viewfinder according to claim 13 wherein said image-capturing apparatus is a digital still camera.
A viewfinder of an image-capturing apparatus comprising:
- an optical guiding member for guiding an optical image signal to an observer's eye;
- and
- a liquid crystal mask disposed between said optical guiding member and said observer's eye, and controlled to shelter a portion of said optical image signal in response to a focal-length change of said image-capturing apparatus in order to confine the area of said optical image signal viewed by said observer's eye.
Dependencies are inferred from the claim text.