Remote Connect with Screen Off

Hi All

so, this is my situation

I have a Mac Desktop , and I would like to Remote Connect to it form My MAC Laptop.

I can do ScreenSharing and see my Desktop , and it work fine, but the problem is that everyone will be able to see my open Screen in my Desktop , they can easily view sensitive information about my work and even control my MAC. this is not I want .

Is there is a way to lock my Desktop screen while it's will be still viewable from my laptop through the screen sharing ?

this can be done in Win7 by using Remote connect , is it possible in MAC ?

thanks