Abstract: An optical fiber (10) capable of minimizing strength deterioration includes a core (11) and a clad (12) arranged around the core (11) such that part of the core (11) is exposed. A rough surface portion is provided at least at part of an outer surface of the exposed portion (11a) of the core (11) exposed through the clad (12). The arithmetic surface roughness Ra of the rough surface portion is equal to or greater than 0.2 ?m. The average length Rsm of a rough curve element of the rough surface portion is equal to or greater than 17 ?m.

Abstract: There is provided an imaging device that includes a body and a viewfinder. The viewfinder is movable in two or more directions, between an encased position and a operative position. The viewfinder is encased inside the body at the encased position. The viewfinder is projected outside the body at the operative position.

Abstract: There is provided an imaging device that includes a body and a viewfinder. The viewfinder is movable in two or more directions, between an encased position and a operative position. The viewfinder is encased inside the body at the encased position. The viewfinder is projected outside the body at the operative position.

Abstract: A control device includes: a detection section configured to detect setting to a predetermined imaging mode; and a control section configured to set a predetermined method of zooming in response to the setting to the imaging mode, and to perform zoom control with a subject distance fixed.

Abstract: An imaging device includes an imaging section and a light-emitting section, and an imaging direction of the imaging section and a direction in which a light is projected by light emission of the light-emitting section are different directions.

Abstract: The present invention provides a projection type display apparatus. The projection type display apparatus for enlarging and projecting an image onto a projected plane includes a projection optical unit for projecting image light onto the projected plane, an optical device for dividing light emitted from a light source into image light that travels to the projection optical unit and unnecessary light that travels outside the projection optical unit, a holding member for holding the projection optical unit, and a light receiving member for receiving the unnecessary light, wherein the light receiving member is provided as a member independent of the holding member. Accordingly, a projection typo display apparatus can be realized that is capable of suppressing or reducing a temperature rise in the holding member caused by the incidence of unnecessary light and the deformation thereof caused by thermal expansion and that is capable of preventing a deterioration in the image quality of a displayed image.

Abstract: In a rear projector for projecting an image from behind a screen, its screen size is variable. In order to permit flexible adaptation to the variation in the screen size, the projector is constructed to permit easy adjustment of a detection device for detecting an image display position or a position indicated on the screen.

Abstract: The present invention provides a projection type display apparatus. The projection type display apparatus for enlarging and projecting an image onto a projected plane includes a projection optical unit for projecting image light onto the projected plane, an optical device for dividing light emitted from a light source into image light that travels to the projection optical unit and unnecessary light that travels outside the projection optical unit, a holding member for holding the projection optical unit, and a light receiving member for receiving the unnecessary light, wherein the light receiving member is provided as a member independent of the holding member. Accordingly, a projection typo display apparatus can be realized that is capable of suppressing or reducing a temperature rise in the holding member caused by the incidence of unnecessary light and the deformation thereof caused by thermal expansion and that is capable of preventing a deterioration in the image quality of a displayed image.