Projecting apparatus

Details Projecting apparatus Projecting apparatus

1982-10-14

1984-04-17

Haroian, Harry N.

Optics: image projectors

Lens support

Lens position adjustable

353 63, 353 80, 350519, G03B 310

Patent

active

044430760

ABSTRACT:
A projecting apparatus wherein a work on a mount is illuminated by an illuminating device and an image of the shape of the work obtained through a light transmitted therethrough or reflected therefrom is formed on a screen by means of a magnifying-projecting device, characterized in that condensing lenses in the illuminating device and projecting lenses in the magnifying-projecting device are formed into zoom type lenses and a tuning device is provided for causing the illuminating scope of the condensing lenses in the illuminating device to correspond to the projecting magnification of the projecting lenses in the magnifying-projecting device.

REFERENCES:
patent: 1826828 (1931-10-01), Schoof
patent: 3549250 (1970-12-01), Pantenburg
patent: 3619035 (1971-11-01), Hopkins
patent: 3679287 (1972-07-01), Takahashi et al.
patent: 3833282 (1974-09-01), Kappl et al.
patent: 3840291 (1974-10-01), Littman et al.
patent: 4241251 (1980-12-01), Yonekubo

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