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 Title: |
US4133124:
Display device
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Chang, Karl; Honolulu, HI 96822
Chang, Dora D. J.; Honolulu, HI 96822
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| Assignee: |
None
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| Published / Filed: |
1979-01-09
/ 1976-08-18
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| Application Number: |
US1976000715490
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| IPC Code: |
Advanced:
G09F 13/24;
G09F 19/20;
IPC-7:
G09F 13/24;
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| ECLA Code: |
G09F13/24; G09F19/20;
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| U.S. Class: |
Current:
040/408;
362/811;
434/283;
434/303;
Original:
040/408;
362/811;
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| Field of Search: |
040/106.21,106.22,106.23
240/10 A
362/811
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| Priority Number: |
| 1976-01-08 |
US1976000647335 |
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| Abstract: |
Diffused light is projected onto a supported thin film in the form of a truncated sphere. The device has a light source disposed at the bottom end of a housing constructed of a light shielding material, and a diffuser plate at the top end of the housing to emit light into the truncated sphere. In one embodiment the plate carries a layer of liquid soap from which a bubble is blown. The housing may also carry a clear glass dome over its top end adjacent which the thin film is supported. Decorative interference patterns of luxuriant colors result.
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| Attorney, Agent or Firm: |
Townsend and Townsend ;
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| Primary / Asst. Examiners: |
Engle, Samuel W.; Palo, Ralph
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| Parent Case: |
The present application is a continuation-in-part of my copending patent application entitled "Display Device", filed Jan. 8, 1976, Ser. No. 647,335; now abandoned in favor of the present application.
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| Family: |
None
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First Claim:
Show all 3 claims |
We claim:
1. A device for displaying to a viewer situated to the side of the device interference patterns created by reflection of light from a thin film comprising: a light source; a housing constructed of opaque material surrounding the light source, the housing having an opening at its top whereby light from the light source emanates from the opening; a translucent plate commensurate in size with the opening in the housing; means for supporting the translucent plate over the opening; and a lip surrounding the translucent plate to define a reservoir having the translucent plate as a bottom and the lip as its sides to contain a bubble-producing liquid, the reservoir having a depth small compared to its surface dimensions; whereby a bubble blown from the liquid forms a thin film in the form of the truncated sphere with the truncation disposed over the opening, the thin film having first and second reflective curved interfaces at a separation sufficiently small to produce interference effects, a portion of the thin film being concave towards the viewer, such that light directed from the opening reflects from the interfaces to the eyes of the viewer, causing interference effects between the light reflected from the first interface and the light reflected from the second interface.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
Show drawing descriptions
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| Description: |
Show description
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| Forward References: |
Show 4 U.S. patent(s) that reference this one
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