A luminous source apparatus, an image projecting apparatus, and an image projection
converting apparatus to prevent a projected image, or an electronic image obtained
through electronization of the projected image from intensity variations. A photosensor
detects the light-emission quantity from a light-emission lamp in order to regulate
the current supplied with the light-emission lamp according to a light-quantity
detecting signal from the photosensor, so as to make the light-emission quantity
from the light-emission lamp constant. Projected light-quantity onto a movie film
is regulated and an image obtained from a shooting section becomes an image having
a good quality with a little flicker.
