BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a vertical section view schematically showing a member with concave portions in accordance with the present invention.
FIG. 2 is a plan view schematically showing a member with concave portions according to a first embodiment of the present invention.
FIG. 3 is a schematic vertical section view illustrating steps of manufacturing the member with concave portions in accordance with the present invention.
FIG. 4 is a view schematically showing a configuration of a laser processing apparatus used in forming openings and a situation that a laser irradiation treatment is being performed.
FIG. 5 is a plan view schematically showing a branching filter used in an opening forming step (a laser irradiation treatment) in a method of manufacturing a member with concave portions in accordance with a first embodiment.
FIG. 6 is a plan view illustrating an arrangement of openings formed in a mask formation film each time a laser irradiation treatment is carried out in the method of manufacturing a member with concave portions in accordance with the first embodiment.
FIG. 7 is a plan view illustrating different situations that openings are sequentially formed on a group-by-group basis in the mask formation film by repeatedly performing the laser irradiation treatment.
FIG. 8 is a plan view illustrating different situations that openings are sequentially formed on a group-by-group basis in the mask formation film by repeatedly performing the laser irradiation treatment.
FIG. 9 is a plan view schematically showing a member with concave portions according to a second embodiment of the present invention.
FIG. 10 is a plan view schematically showing a branching filter used in an opening forming step (a laser irradiation treatment) in a method of manufacturing a member with concave portions in accordance with a second embodiment.
FIG. 11 is a plan view illustrating an arrangement of openings formed in a mask formation film each time a laser irradiation treatment is carried out in the method of manufacturing a member with concave portions in accordance with the second embodiment.
FIG. 12 is a plan view illustrating different situations that openings are sequentially formed on a group-by-group basis in the mask formation film by repeatedly performing the laser irradiation treatment.
FIG. 13 is a plan view illustrating different situations that openings are sequentially formed on a group-by-group basis in the mask formation film by repeatedly performing the laser irradiation treatment.
FIG. 14 is a plan view schematically showing a member with concave portions according to a third embodiment of the present invention.
FIG. 15 is a plan view schematically showing a branching filter used in an opening forming step (a laser irradiation treatment) in a method of manufacturing a member with concave portions in accordance with a third embodiment.
FIG. 16 is a plan view illustrating an arrangement of openings formed in a mask formation film each time a laser irradiation treatment is carried out in the method of manufacturing a member with concave portions in accordance with the third embodiment.
FIG. 17 is a plan view illustrating different situations that openings are sequentially formed on a group-by-group basis in the mask formation film by repeatedly performing the laser irradiation treatment.
FIG. 18 is a plan view illustrating different situations that openings are sequentially formed on a group-by-group basis in the mask formation film by repeatedly performing the laser irradiation treatment.
FIG. 19 is a vertical section view schematically illustrating one example of a method of manufacturing a microlens substrate.
FIG. 20 is a vertical section view schematically illustrating one example of a method of manufacturing a microlens substrate.
FIG. 21 is a schematic vertical section view illustrating one preferred embodiment of the transmission type screen in accordance with the present invention, which incorporates the microlens substrate (lens substrate).
FIG. 22 is a view schematically illustrating a configuration of the rear projection in accordance with the present invention.