Claims
- 1. An image magnification control device for a camera having a photographing lens, said photographing lens including a zooming optical system and a focusing optical system, said image magnification control device comprising:
- means for detecting a focal length and a defocus amount of said photographing lens;
- first driving means for driving said focusing optical system based on said defocus amount;
- means for setting an image magnification of said photographing lens to a set image magnification;
- means for calculating a control focal length based on said defocus amount and said set image magnification;
- second driving means for driving said zooming optical system in accordance with said control focal length; and
- means for controlling said first driving means and said second driving means so that said photographing lens is maintained at said set image magnification, said second driving means being actuated before said first driving means has completed driving said focusing optical system.
- 2. The image magnification controlling device according to claim 1, said second driving means for driving said zooming optical system being actuated by said controlling means after said first driving means has been actuated.
- 3. The image magnification controlling device according to claim 1, further comprising means for detecting a position of said focusing optical system, said calculating means calculating said control focal length based on said position of said focusing optical system.
- 4. The image magnification controlling device according to claim 1, wherein said image magnification setting means includes means external to said camera for setting said set image magnification.
- 5. The image magnification controlling device according to claim 1, wherein said second driving means includes means for driving said zooming optical system towards either one of a telephoto direction and a wide-angle direction.
- 6. The image magnification controlling device according to claim 1, further comprising means for determining whether said set image magnification is out of a controllable range based on said focal length, and means for inhibiting image magnification control when it is determined by said determining means that said set image magnification is out of said controllable range.
- 7. The image magnification controlling device according to claim 6, further comprising warning means for indicating to an operator of said camera that said set image magnification is out of said controllable range.
- 8. An image magnification controlling device for a camera having a lens system, comprising:
- first driving means for driving said lens system for focusing;
- second driving means for driving said lens system for zooming;
- means for setting an image magnification of said lens system to a set image magnification; and
- means for controlling said first driving means and said second driving means so that said lens system is maintained at said set image magnification, said second driving means being actuated before said first driving means has completed driving said lens system.
- 9. The image magnification controlling device according to claim 8, said second driving means for driving said lens system being actuated by said controlling means after said first driving means has been actuated.
- 10. The image magnification controlling device according to claim 8, wherein said image magnification setting means includes means external to said camera for setting said set image magnification.
- 11. The image magnification controlling device according to claim 8, wherein said second driving means includes means for driving a zooming optical system of said lens system towards either one of a telephoto direction and a wide-angled direction.
- 12. An image magnification controlling device according to claim 8, further comprising means for detecting a focal length and a defocus amount of said lens system, said first driving means driving said lens system based on said defocus amount.
- 13. The image magnification controlling device according to claim 12, further comprising means for calculating a control focal length based on said defocus amount, said second driving means driving a zooming optical system of said lens system in accordance with said control focal length.
- 14. The image magnification controlling device according to claim 12, further comprising means for determining whether said set image magnification is out of a controllable range based on said focal length, and means for inhibiting image magnification control when it is determined by said determining means that said set image magnification is out of said controllable range.
- 15. The image magnification controlling device according to claim 14, further comprising warning means for indicating to an operator of said camera that said set image magnification is out of said controllable range.
Priority Claims (6)
Number |
Date |
Country |
Kind |
63-237570 |
Sep 1988 |
JPX |
|
63-237571 |
Sep 1988 |
JPX |
|
63-237572 |
Sep 1988 |
JPX |
|
63-237573 |
Sep 1988 |
JPX |
|
63-237574 |
Sep 1988 |
JPX |
|
63-237575 |
Sep 1988 |
JPX |
|
Parent Case Info
This application is a division of application Ser. No. 08/701,759, filed Aug. 22, 1996, now U.S. Pat. No. 5,708,869, which is a division of application Ser. No. 08/431,284, filed Apr. 28, 1995 now abandoned, which is a division of application Ser. No. 08/373,369, filed Jan. 17, 1995, which issued as U.S. Pat. No. 5,541,702 on Jul. 30, 1996, which is a division of application Ser. No. 08/149,226, filed Nov. 2, 1993, which issued as U.S. Pat. No. 5,428,419 on Jun. 27, 1995, which is a continuation of application Ser. No. 07/881,785, filed May 11, 1992, which issued as U.S. Pat. No. 5,283,607 on Feb. 1, 1994, which is a continuation of application Ser. No. 07/652,038, filed Feb. 4, 1991, which issued as U.S. Pat. No. 5,159,377 on Oct. 27, 1992, which is a continuation of application Ser. No. 07/410,880, filed on Sep. 22, 1989, which issued as U.S. Pat. No. 5,093,680 on Mar. 3, 1992.
US Referenced Citations (31)
Foreign Referenced Citations (33)
Number |
Date |
Country |
3403469 |
Jun 1993 |
DEX |
53-113527 |
Oct 1978 |
JPX |
54-25819 |
Feb 1979 |
JPX |
57-165806 |
Oct 1982 |
JPX |
58-103273 |
Jun 1983 |
JPX |
59-64816 |
Apr 1984 |
JPX |
59-177510 |
Oct 1984 |
JPX |
60-1602 |
Jan 1985 |
JPX |
61-38917 |
Feb 1986 |
JPX |
61-26015 |
Feb 1986 |
JPX |
61-230111 |
Oct 1986 |
JPX |
61-292608 |
Dec 1986 |
JPX |
62-118328 |
May 1987 |
JPX |
62-133430 |
Jun 1987 |
JPX |
62-133431 |
Jun 1987 |
JPX |
62-200340 |
Sep 1987 |
JPX |
63-5331 |
Jan 1988 |
JPX |
63-131112 |
Jun 1988 |
JPX |
63-189817 |
Aug 1988 |
JPX |
63-220118 |
Sep 1988 |
JPX |
64-44428 |
Feb 1989 |
JPX |
64-44429 |
Feb 1989 |
JPX |
64-56406 |
Mar 1989 |
JPX |
64-62608 |
Mar 1989 |
JPX |
64-79713 |
Mar 1989 |
JPX |
1-99011 |
Apr 1989 |
JPX |
1-99012 |
Apr 1989 |
JPX |
1123026 |
May 1989 |
JPX |
1131509 |
May 1989 |
JPX |
1179113 |
Jul 1989 |
JPX |
1232311 |
Sep 1989 |
JPX |
1307711 |
Dec 1989 |
JPX |
2-12116 |
Jan 1990 |
JPX |
Non-Patent Literature Citations (31)
Entry |
Copy of a European Search Report issued with EP App. No. 96 105375.8, dated Dec. 29, 1997. |
Copy of a European Search Report issued with EP App. No. 96 105374.1, dated Dec. 29, 1997. |
Copy of a European Search Report issued with EP App. No. 96 105376.6, dated Dec. 29, 1997. |
Copy of a European Search Report issued with EP App. No. 96 1-6034.7, dated Jan. 5, 1998. |
English Language Abstract of JP 1-131509. |
English Language Abstract of JP 1-123026. |
English Language Abstract of JP 1-99012. |
English Language Abstract of JP 1-99011. |
English Language Abstract of JP 64-79713. |
English Language Abstract of JP 64-62608. |
English Language Abstract of JP 64-56406. |
English Language Abstract of JP 64-44429. |
English Language Abstract of JP 64-44428. |
English Language Abstract of JP 63-220118. |
English Language Abstract of JP 63-5331. |
English Language Abstract of JP 63-200340. |
English Language Abstract of JP 62-133431. |
English Language Abstract of JP 62-133430. |
English Language Abstract of JP 62-118328. |
English Language Abstract of JP 61-230111. |
English Language Abstract of JP 61-38917. |
English Language Abstract of JP 61-26015. |
English Language Abstract of JP 53-113527. |
Infinity Super Zoom 300 Camera Instruction Manual, p. 67, published Jul. 1988. |
A Copy of an Office Action issued by the European Patent Office on Aug. 11, 1994. |
Patent Abstracts of Japan, vol. 13, No. 12 (P-812) �3360!, Dec. 1, 1989. |
An English Language Abstract of JP-A-60 001602. |
A Copy of a Search Report issued by the European Patent Office with EPo 94 10 8436. |
Patent Abstracts of Japan, vol. 10, No. 195 (P-475) (2251), Jul. 9, 1986. |
A Copy of a Search Report issued by the European Patent Office with EPO 94 10 6154. |
Patent Abstracts of Japan, vol. 9, No. 33 (P-334) (1756), Feb. 13, 1985. |
Divisions (4)
|
Number |
Date |
Country |
Parent |
701759 |
Aug 1996 |
|
Parent |
431284 |
Apr 1995 |
|
Parent |
373369 |
Jan 1995 |
|
Parent |
149226 |
Nov 1993 |
|
Continuations (3)
|
Number |
Date |
Country |
Parent |
881785 |
May 1992 |
|
Parent |
652038 |
Feb 1991 |
|
Parent |
410880 |
Sep 1989 |
|