Variable mask device for an illuminator

Details Variable mask device for an illuminator Variable mask device for an illuminator

1981-08-24

1984-08-28

Nelson, Peter A.

Illumination

Light source and modifier

Adjustable or repositionable modifier

362283, 362 18, 362323, 353 88, F21V 1118

Patent

active

044687206

ABSTRACT:
A variable mask device for use with an illuminator comprising a projection window, a plurality of variable mask plates for optionally varying the size and shape of the projection window and means operatively connected to said variable mask device for inclining said mask device with respect to the projection axis within a predetermined angular range. Means are also provided for rotating the mask device around the projection axis.

REFERENCES:
patent: 2210554 (1940-08-01), Palermo
patent: 2553094 (1931-03-01), Jarrett
patent: 2944145 (1960-07-01), Legge
patent: 3551033 (1970-12-01), Beesley
patent: 4104709 (1978-08-01), Kloots
patent: 4208100 (1980-06-01), Bischl
patent: 4233650 (1980-11-01), Hagner et al.

Affiliated with

Also associated with

Rating

Variable mask device for an illuminator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable mask device for an illuminator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable mask device for an illuminator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-880554