You can't use the LEDs like that, they need a current limiting resistor wired for each one. Use 150 Ohms if you want to achieve max. brightness (~20mA) or 1k Ohms for 'normal' brightness.
There are special LEDs that have a built-in resistor, but these are very uncommon to use.
By the way: Thats an infrared proximity sensor, not an ultrasonic one.
I didn’t add resistors just for the sake of circuit simplicity, of course you can add a 230 Ohms resistor. The maximum output current from each pin of the Arduino is 40mA. I haven’t used LEDs, I have used an LED bar graph. I used this sharp infrared sensor because I couldn’t find the ultrasonic one on the fritzing library.
HANKENSTIEN….I don’t quite understand your question !
Have a look at this: http://karimbaali.com/tutorials/arduinoprocessing/sensors/ultrasonic-sensor-led-bar-graph/