JPS55117137A - Device which displays direction for driving objective lens - Google Patents
Device which displays direction for driving objective lensInfo
- Publication number
- JPS55117137A JPS55117137A JP2472679A JP2472679A JPS55117137A JP S55117137 A JPS55117137 A JP S55117137A JP 2472679 A JP2472679 A JP 2472679A JP 2472679 A JP2472679 A JP 2472679A JP S55117137 A JPS55117137 A JP S55117137A
- Authority
- JP
- Japan
- Prior art keywords
- led
- leds
- lighted
- objective lens
- focus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Indication In Cameras, And Counting Of Exposures (AREA)
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Abstract
PURPOSE: To obtain the sensual display device suited for manually controlling the position of the objective lens by disposing three or more light emitting elements in ring form and so constituting these that the rotating direction of the light emitting position is changed depending upon whether front focus or rear focus.
CONSTITUTION: A display part 2 which is disposed with three or more LEDs are so disposed in ring form that light emission thereof may be observed is provided. The four LEDs are then subsequently lighted by the output from a circuit 3 which detects focus photoelectrically and generates output. The circuit 3 has two output terminals. Here, when front focus, i.e., when N1=0, N2=1 as shown in the output truth table 1 of the circuit 3, the LEDs of the display part 2 are lighted in the order of LED1, LED2, LED3, LED4, and when rear focus, i.e., when N1=1, N2=0, the LEDs are lighted counterclockwise like LED1, LED4, LED3, LED2. When focused, all the LEDs are lighted. In this way, the controlling of the objective lens may be accomplished sensually without any error.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2472679A JPS55117137A (en) | 1979-03-02 | 1979-03-02 | Device which displays direction for driving objective lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2472679A JPS55117137A (en) | 1979-03-02 | 1979-03-02 | Device which displays direction for driving objective lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55117137A true JPS55117137A (en) | 1980-09-09 |
JPS6255127B2 JPS6255127B2 (en) | 1987-11-18 |
Family
ID=12146150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2472679A Granted JPS55117137A (en) | 1979-03-02 | 1979-03-02 | Device which displays direction for driving objective lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55117137A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5835523A (en) * | 1981-08-27 | 1983-03-02 | Canon Inc | Display device for film transportation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5424014A (en) * | 1977-07-25 | 1979-02-23 | Canon Inc | Setting system for photographic information of camera |
-
1979
- 1979-03-02 JP JP2472679A patent/JPS55117137A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5424014A (en) * | 1977-07-25 | 1979-02-23 | Canon Inc | Setting system for photographic information of camera |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5835523A (en) * | 1981-08-27 | 1983-03-02 | Canon Inc | Display device for film transportation |
JPS6258490B2 (en) * | 1981-08-27 | 1987-12-07 | Canon Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS6255127B2 (en) | 1987-11-18 |
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