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GB1129452A - Light projecting apparatus - Google Patents

Light projecting apparatus

Info

Publication number
GB1129452A
GB1129452A GB212165A GB212165A GB1129452A GB 1129452 A GB1129452 A GB 1129452A GB 212165 A GB212165 A GB 212165A GB 212165 A GB212165 A GB 212165A GB 1129452 A GB1129452 A GB 1129452A
Authority
GB
United Kingdom
Prior art keywords
mirror
light
screen
flexed
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB212165A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOHN ALEXIS KEY
Original Assignee
JOHN ALEXIS KEY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JOHN ALEXIS KEY filed Critical JOHN ALEXIS KEY
Priority to GB212165A priority Critical patent/GB1129452A/en
Publication of GB1129452A publication Critical patent/GB1129452A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Projection Apparatus (AREA)

Abstract

1,129,452. Optical apparatus. J.A. KEY. Dec. 23, 1965 [Jan. 18, 1965], No. 2121/65. Heading G2J. [Also in Division G5] An apparatus for projecting images or light patterns on a screen comprises a point source of light or means for directing a parallel beam of light towards a mirror which reflects light on to a screen, the mirror being continually flexed by forces, applied either directly or indirectly via its frame, to continually move or change the shape of the image or pattern on the screen. The mirror may have a shaped reflecting surface to define an image and be mounted on springs or in a rubber diaphragm so as to be flexed by one or more reciprocating rods or pistons, by expanding or contacting the diaphragm or by electromagnets.
GB212165A 1965-01-18 1965-01-18 Light projecting apparatus Expired GB1129452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB212165A GB1129452A (en) 1965-01-18 1965-01-18 Light projecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB212165A GB1129452A (en) 1965-01-18 1965-01-18 Light projecting apparatus

Publications (1)

Publication Number Publication Date
GB1129452A true GB1129452A (en) 1968-10-09

Family

ID=9733965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB212165A Expired GB1129452A (en) 1965-01-18 1965-01-18 Light projecting apparatus

Country Status (1)

Country Link
GB (1) GB1129452A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133577A (en) * 1982-09-13 1984-07-25 Mcgeehon William C Projection screen
US4511215A (en) * 1983-04-29 1985-04-16 The United States Of America As Represented By The United States Department Of Energy Lightweight diaphragm mirror module system for solar collectors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133577A (en) * 1982-09-13 1984-07-25 Mcgeehon William C Projection screen
US4511215A (en) * 1983-04-29 1985-04-16 The United States Of America As Represented By The United States Department Of Energy Lightweight diaphragm mirror module system for solar collectors

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