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US 8,947,576 B2Granted
Optical viewfinder having self-luminous and non-self-luminous display portions and optical apparatus using same
AssigneeCanon Kabushiki Kaisha
InventorYoshiaki Irie
Life of this patent
Estimating the term…
Abstract
An optical viewfinder to observe an object image focused as a primary image by an objective lens includes a first display unit of self-luminous type and a second display unit of non-self-luminous type. The first display unit is arranged at a position closer to a primary image plane of the objective lens than the second display unit in a direction of an optical axis.
Claims6
An optical viewfinder configured to observe an object image focused as a primary image by an objective lens, the optical viewfinder comprising:
- a first display unit of self-luminous type and a second display unit of non-self-luminous type;
- wherein the first display unit is arranged at a position closer to a primary image plane of the objective lens than the second display unit in a direction of an optical axis, and
- wherein the first display unit of self-luminous type is disposed between a first transparent substrate and a second transparent substrate, the second display unit of non-self-luminous type is disposed between the second transparent substrate and a third transparent substrate, and the first transparent substrate has a smaller thickness than the second transparent substrate.
An image pickup apparatus comprising:
- an imaging lens configured to form a primary image of an object scene at a primary image plane;
- and
- an optical viewfinder disposed at a predetermined distance of the primary image plane and configured to observe the primary image focused by the imaging lens,
- wherein the optical viewfinder includes:
- a first display unit of self-luminous type and a second display unit of non-self-luminous type,
- wherein the first display unit of self-luminous type is disposed between a first transparent substrate and a second transparent substrate, the second display unit of non-self-luminous type is disposed between the second transparent substrate and a third transparent substrate, and the first transparent substrate has a smaller thickness than the second transparent substrate;
- and
- wherein the first display unit is arranged at a position closer to the primary image plane of the imaging lens than the second display unit in a direction of an optical axis thereof.
5 more elements
Dependencies are inferred from the claim text.