Abstract: An adjustable condenser seat includes at least one light source, at least one lens, at least one lens sleeve, and at least one adjuster. The lens sleeve contains the lens which is disposed for the light source correspondingly for guiding light from the light source to the lens. The adjuster is disposed at a focal axis of the light between the light source and the lens sleeve. The adjuster is utilized for lengthening or shortening a distance between the light source and the lens so that a relative position between the light source and the lens can be adjusted. Accordingly, either a condensing angle of the lens or a focal position of the lens to the light source can be changed.