Movie camera system having view finding and projecting operations

• US 5,300,976 A
• Filed: 04/16/1993
• Issued: 04/05/1994
• Est. Priority Date: 04/17/1992
• Status: Expired due to Term

• Current Assignee: Goldstar Jewellery LLC
• Original Assignee: Goldstar Jewellery LLC
• Inventors: Yeo, Myung K., Lee, Nam S., Shim, Dae S., Lim, Jae C., Lim, Yong T., Seo, Jin W.
• Primary Examiner(s): Gellner, Michael L.
• Assistant Examiner(s): HAN, JANG K
• Application Number:
  US08/047,442
• Time in Patent Office: 354 Days
• Field of Search: 354/219, 358/224, 358/231, 358/60, 352/136, 352/138
• US Class Current: 396/374
• CPC Class Codes: G03B 17/48 adapted for combination with other photographic or optical apparatus
• CPC Class Codes: H04N 23/531 being rotatable or detachable
• CPC Class Codes: H04N 23/63 by using electronic viewfinders
• CPC Class Codes: H04N 5/7441 the modulator being an array of liquid crystal cells
• CPC Class Codes: H04N 9/3176 wherein the projection device is incorporated in a camera details of cameras adapted for combination with a projector not peculiar to the presence of an electronic spatial light modulator G03B17/54

Abstract

An electronic movie camera system having a projecting function as well as a view finding function. The system includes a system body, a housing mounted on the system body, an LCD panel disposed within the housing to display an image corresponding to an image signal received from the system body, a focusing lens unit mounted to one end of the housing disposed rearwardly of the LCD panel and adapted to project the displayed image on an external screen, a back light disposed rearwardly of the LCD panel to emit a view finding light, a polarizing plate disposed forwardly of the LCD panel, a view finder coupling unit selectively attached to the other end of the housing disposed forwardly of the LCD panel, the view finder coupling unit having an eye lens, and a projector coupling unit selectively attached to the other end of the housing, the projector coupling unit having a light source for emitting a projecting light and a condensing lens for the projecting light, whereby the movie camera system is capable of both a view finding operation and a projecting operation.

Claims

1. A movie camera system comprising:

a system body having an image signal;

a housing mounted on said system body;

a display element disposed within said housing and adapted to display an image corresponding to the image signal received from the system body;

a focusing lens unit mounted to one end of the housing disposed on one side of said display element and adapted to project the displayed image on an external screen;

a back light disposed on the one side of the display element to emit a view finding light;

a polarizing plate disposed on another side of the display element;

a view finder coupling unit selectively attached to the other end of the housing disposed on the another side of the display element, said view finder coupling unit having an eye lens; and

a projector coupling unit selectively attached to the other end of the housing, said projector coupling unit having a light source for emitting a projecting light and a condensing lens for said projecting light,

whereby said movie camera system is capable of both a view finding operation and a projecting operation.

2. A movie camera system in accordance with claim 1, wherein said back light is engaged with a guide groove disposed in the housing, the back light being capable of rotating while being guided along the guide groove

3. A movie camera system in accordance with claim 1, further comprising a fan disposed near the one end of said housing on a portion of the system body and adapted to discharge heat generated from said light source.

4. A movie camera system in accordance with claim 1, wherein said projector coupling unit comprises a housing member and a plurality of heat discharge ports disposed at said housing member.

5. A movie camera system in accordance with claim 1, wherein said light source of the projector coupling unit is a halogen lamp.

6. A movie camera system in accordance with claim 1, further comprising a polarizing plate disposed between said focusing lens unit and said back light.

7. A movie camera system in accordance with claim 1, wherein said display element is a liquid crystal display panel.

8. A movie camera system in accordance with claim 1, wherein said focusing lens unit comprises a plurality of convex lenses.

18. A movie camera system in accordance with claim 1, further comprising a bracket fixedly mounted to the system body, said housing being rotatably mounted to the bracket.

19. A movie camera system in accordance with claim 1, wherein said back light is pivotally mounted at one end thereof to said housing, said back light being capable of rotating through an angle of approximately 90°

, according to a rotation of the housing.

20. A movie camera system in accordance with claim 8, wherein said focusing lens unit further comprises at least one concave lens.

9. A movie camera system comprising:

a system body having an image signal;

a housing fixedly mounted on said system body;

a light source disposed within said housing and mounted to one end of the housing, said light source being adapted to provide light for one of a view finding operation and a projecting operation;

a condensing lens disposed at one side of and near said light source;

a polarizing plate disposed at one side of said condensing lens;

a display element rotatably disposed at one side of said polarizing plate to be vertically invertible and adapted to display an image based on the image signal received from the system body; and

a focusing lens unit disposed within the housing and fixedly mounted to another end of the housing, said focusing lens unit being adapted to selectively enable the displayed image to be seen therethrough and project the displayed image on an external screen,

whereby said movie camera system is capable of both a view finding operation and a projecting operation.

10. A movie camera system in accordance with claim 9, wherein said display element is a liquid crystal display panel.

11. A movie camera system in accordance with claim 9, wherein said display element has a shaft rotatably mounted at both ends thereof to said housing and the movie camera system further comprises means for rotating the display element, said rotating means comprising a knob fixedly mounted to one end of said shaft protruded outwardly of the housing to allow manual rotation of the display element.

12. A movie camera system in accordance with claim 11, wherein said means for rotating said display element further includes a motor for rotating said shaft to rotate the display element.

13. A movie camera system in accordance with claim 9, wherein said light source is a halogen lamp and an amount of light from the light source is adjustable, depending on a selection between the view finding operation and the projecting operation.

14. A movie camera system in accordance with claim 9, further comprising a polarizing plate disposed between said display element and said focusing lens unit.

15. A movie camera system in accordance with claim 9, further comprising a fan disposed at a portion of the system body beneath the light source and adapted to discharge heat generated from said light source.

16. A movie camera system in accordance with claim 9, wherein said housing has a plurality of heat discharge ports near said light source.

17. A movie camera system in accordance with claim 9, wherein said focusing lens unit comprises a plurality of convex lenses.

21. A movie camera system in accordance with claim 17, wherein said focusing lens unit further comprising at least one concave lens.