GB304089A - Apparatus for diascopic and episcopic projection - Google Patents

Apparatus for diascopic and episcopic projection

Info

Publication number
GB304089A
GB304089A GB1288828A GB1288828A GB304089A GB 304089 A GB304089 A GB 304089A GB 1288828 A GB1288828 A GB 1288828A GB 1288828 A GB1288828 A GB 1288828A GB 304089 A GB304089 A GB 304089A
Authority
GB
United Kingdom
Prior art keywords
projection
diascopic
episcopic
lamp
axis
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
GB1288828A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1288828A priority Critical patent/GB304089A/en
Publication of GB304089A publication Critical patent/GB304089A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/08—Projectors or projection-type viewers; Accessories therefor affording epidiascopic projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

304,089. Liesegang, J. May 2, 1928. Optical - projection apparatus. - In apparatus for use alternatively for episcopic or diascopic projection, the lamp and reflector may be adjusted so that the luminous face of the light source is at right angles to either projection axis alternatively. As shown, a rejector 2, and a lamp 1 having a light plane 4, are rotatable together about an axis 5 so that the light plane 4 is in the required position for episcopic projection by means of the elements 7 - - 9, or so that it is in the position 4a for diascopic projection with the aid of a condenser 10. Means enabling the rotation to be effected from the exterior of the apparatus may be provided. Specification 185,395 is referred to.
GB1288828A 1928-05-02 1928-05-02 Apparatus for diascopic and episcopic projection Expired GB304089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1288828A GB304089A (en) 1928-05-02 1928-05-02 Apparatus for diascopic and episcopic projection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1288828A GB304089A (en) 1928-05-02 1928-05-02 Apparatus for diascopic and episcopic projection

Publications (1)

Publication Number Publication Date
GB304089A true GB304089A (en) 1929-01-17

Family

ID=10012965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1288828A Expired GB304089A (en) 1928-05-02 1928-05-02 Apparatus for diascopic and episcopic projection

Country Status (1)

Country Link
GB (1) GB304089A (en)

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