Projection type illuminating device

• US 6,623,124 B2
• Filed: 02/20/2001
• Issued: 09/23/2003
• Est. Priority Date: 05/16/2000
• Status: Expired due to Fees

• Current Assignee: Asami Okura
• Original Assignee: HAL Corporation
• Inventors: Okura, Mitsuyoshi
• Primary Examiner(s): Adams, Russell
• Assistant Examiner(s): Esplin, D. Ben
• Application Number:
  US09/788,820
• Publication Number:
  US 20010043313A1
• Time in Patent Office: 945 Days
• Field of Search: 353/43, 353/42, 353/97, 353/101, 352/139, 352/140, 396/72
• US Class Current: 353/43
• CPC Class Codes: G03B 21/001 Slide projectors
• CPC Class Codes: G03B 21/14 Details

Abstract

To provide a projection type illuminating device which can clearly form a silhouette, a projected figure or the like at a projecting position by a lighted electric lamp, and is safely used without damaging an eye even when the light accidentally enters the eye of a person. The device includes a condenser lens barrel part 20 removably attached to the tip of an illuminator main body 10 for performing radiation with a lighted electric lamp 13, a mask part 30 removably attached to the tip of the condenser lens barrel part 20 and having a shading plate 31 in which projecting opening parts 32 of various forms are opened and formed in the center, at the tip, and a focus adjusting lens barrel part 40 that is back and forth slidably attached to the tip of the condenser lens barrel part 20 in the state of covering the total of the mounted mask part 30 and that projects the opening part shape of the projecting opening part 32 by focusing the light passing through the projecting opening part 32 of the mask part 30 by the radiation of the illuminator main body 10 together with the condenser lens barrel part 20. The focus adjusting lens barrel part 40 is configured to have a screw type structure or a click type structure.

Claims

1. A projection type illuminating device comprising:

an illuminator main body for performing radiation by a light source;

a condenser lens barrel part removably attached to a tip of said illuminator main body, said condenser tens barrel part having a condenser lens;

a mask part disposed in front of said condenser lens barrel part and removably attached to a tip of said condenser lens barrel part and including a shading plate having therein at least one partially transparent part; and

a focus adjusting lens barrel part, said mask part having a first cooperating part and said focus adjusting barrel pan having a second cooperating part such that said focus adjusting lens barrel part is movably attached to said mask part in a state of covering said mask part such that said focus adjusting lens barrel part is contractible toward and expandable from said illumination main body over said mask part, said focus adjusting lens barrel part having a focus adjusting lens;

wherein a shape of the at least one partially transparent part of the shading plate is projected by focusing light from said illuminator main body backwardly radiated on and passing through said condenser lens and the shading plate of said mask part by using said focus adjusting lens barrel part.

2. A projection type illuminating device as claimed in claim 1, wherein the at least one transparent part comprises a projecting opening part formed on the shading plate, whereby an opening shape of the projecting opening part is projected by focusing light radiated by said illuminator main body and passing through the projecting opening part of the mask part by using the focus adjusting lens barrel part.

3. A projection type illuminating device as claimed in claim 1, wherein the at least one partially transparent part comprises a translucent projecting plate having thereon a figure inclusive of a symbol, pattern and other displayed figure, whereby a figure shape on the translucent projecting plate is projected by light radiated by the illuminator main body and passing through the projecting plate of the mask part.

4. A projection type illuminating device as claimed in claim 1, wherein said focus adjusting lens barrel part has a screw type structure so that said focus adjusting lens barrel part can move back and forth by being screw-rotated with respect to said mask part.

5. A projection type illuminating device comprising:

an illuminator main body for performing radiation by alight source;

a mask part removably attached to a tip of said illuminator main body and including a shading plate having therein at least one partially transparent part; and

a focus adjusting lens barrel part, said mask part having a first cooperating part and said focus adjusting barrel part having a second cooperating part such that said focus adjusting lens barrel part is movably attached to said mask part in a state of covering said mask part such that said focus adjusting lens barrel part is contractible toward and expandable from said illumination main body over said mask part, said focus adjusting lens barrel part having a focus adjusting lens;

wherein a shape of the at least one partially transparent part of the shading plate is projected by focusing light from said illuminator main body backwardly radiated on and passing through the shading plate of said mask part by using said focus adjusting lens barrel part.

6. A projection type illuminating device as claimed in claim 5, wherein the at least one transparent part comprises a projecting opening part formed on the shading plate, whereby an opening shape of the projecting opening part is projected by focusing light radiated by said illuminator main body and passing through the projecting opening part of the mask part by using the focus adjusting lens barrel part.

7. A projection type illuminating, device as claimed in claim 5, wherein the at least one partially transparent part comprises a translucent projecting plate having thereon a figure inclusive of a symbol, pattern and other displayed figure, whereby a figure shape on the translucent projecting plate is projected by light radiated by the illuminator main body and passing through the projecting plate of the mask part.

8. A projection type illuminating device as claimed in claim 5, wherein said focus adjusting lens barrel part has a screw type structure so that said focus adjusting lens barrel part can move hack and forth by being screw-rotated with respect to said mask part.