Claims
- 1. An auxiliary imaging lens adapted to be attached to a main part of an imaging lens of a TV camera, said TV camera comprising a solid-state imaging device for capturing a horizontally longer size screen and being capable of capturing an image of a normal size screen by masking a part of right and left sides of said solid-state imaging device;
said auxiliary imaging lens being configured such that, when capturing the image for said normal size screen, an effective imaging area having such a size that said normal size screen in a case without using said auxiliary imaging lens is just held therein can be secured, and a focal length yielding a field of view area substantially on a par with a field of view area obtained when capturing said horizontally longer size screen can be set, said auxiliary imaging lens being attachable to the main part of said imaging lens on an object side.
- 2. An auxiliary imaging lens according to claim 1, wherein said auxiliary imaging lens comprises, successively from the object side, a biconcave lens and a biconvex lens.
- 3. An auxiliary imaging lens according to claim 1, wherein said horizontally longer size screen has an aspect ratio of 16:9; and
wherein said normal size screen has an aspect ratio of 4:3.
- 4. An auxiliary imaging lens according to claim 1, wherein said auxiliary imaging lens is attached to said main part of imaging lens by being screwed thereon or by means of a screw.
- 5. An imaging apparatus comprising the auxiliary imaging lens according to claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-343793 |
Dec 1999 |
JP |
|
RELATED APPLICATIONS
[0001] This application claims the priority of Japanese Patent Application No. 11-343793 filed on Dec. 2, 1999, which is incorporated herein by reference.