OPAQUE PROJECTOR

OPAQUE PROJECTOR

the slide-film projector and overhead projector discussed so far can only be used to the project the transparent material.

The opaque material,like picture,diagram and specimen can not be projected by these projectors.

The third type of projectors, namely opaque projector do away with this difficulty.

DISOPAQUE IGN AND  WORKING OF AN  PROJECTOR

In opaque projector the principle of reflected light is used for the projection rather than the direct light transmission, as shown in thev diagram in Figure 3.4.

The projection area in the opaque projector lies at the base of the projector.

EDUCATIONAL ADVANTAGES OF OPAQUE PROJECTOR

  1.Any material, whether transparent or non-transparent, related to instruction can be properly projected on the screenfor viewing by the entire class with the help of this projector.

2.IN this projector it is not essential to prepare slides of the graphic material for its visual display on the screen.material like photographs, picture, graphs, diagrams.

3.The most striking use of the opaque projector lies in the fact that it needs almost no arrangement or preparation with regard to mounting for the dispiay of graphic material on the screen.

4.All types of three-dimensional aid material such as actual objects,specimen, models and mock-ups can be projected on the screen by placing them on the platfrom of this equipment.

5.The projection carried out through this projecttor can prove quite helpful in the study of various topics related to the subject areas of history, geography and other social as well as environmental and natural sciencess.

6.A unique advantage of the opaque projector lies in the factthat it can be utilized with care for enlarging and other illustrative material to a chalkboard or to the large sheet of chart paper placed on the screen for tracung.