| 摘要 |
PURPOSE:To display how to operate the focusing state and an optical system, by controlling lighting of all of plural display elements, in a range finding information display device of a camera having a range finder. CONSTITUTION:Known range finding circuit 24 outputs three signals, and the first signal corresponding to the slippage quantity of the focus is supplied to AND gates 40 and 42 through voltage control pulse oscillator 36 and frequency dividing circuit 38. The second digital signal indicating the positional relation between the focus position and the object is supplied to AND gate 40 and is supplied to AND gate 42 through inverter 44. The third digital signal indicating focusing or defocusing is supplied to one input terminal and the like of OR gate groups 50-0...50-N, and signals from AND gates 40 and 42 to the other input terminal through up/down counter 46 and decoder 48, thereby controlling light emission of light emission diode groups 34-0...34-N. |
