CH383760A - Method and mold for the production of ALBADA viewfinders with mirroring device - Google Patents

Method and mold for the production of ALBADA viewfinders with mirroring device

Info

Publication number
CH383760A
CH383760A CH497960A CH497960A CH383760A CH 383760 A CH383760 A CH 383760A CH 497960 A CH497960 A CH 497960A CH 497960 A CH497960 A CH 497960A CH 383760 A CH383760 A CH 383760A
Authority
CH
Switzerland
Prior art keywords
albada
viewfinders
mold
production
mirroring device
Prior art date
Application number
CH497960A
Other languages
German (de)
Inventor
Friedrich Dipl Phys Papke
Original Assignee
Voigtlaender Ag
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 Voigtlaender Ag filed Critical Voigtlaender Ag
Publication of CH383760A publication Critical patent/CH383760A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/84—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by moulding material on preformed parts to be joined
    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Viewfinders (AREA)
  • Lenses (AREA)
CH497960A 1959-06-13 1960-04-30 Method and mold for the production of ALBADA viewfinders with mirroring device CH383760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV16709A DE1172530B (en) 1959-06-13 1959-06-13 ALBADA viewfinder with mirroring device as well as method and device for its production

Publications (1)

Publication Number Publication Date
CH383760A true CH383760A (en) 1964-10-31

Family

ID=7575854

Family Applications (1)

Application Number Title Priority Date Filing Date
CH497960A CH383760A (en) 1959-06-13 1960-04-30 Method and mold for the production of ALBADA viewfinders with mirroring device

Country Status (3)

Country Link
CH (1) CH383760A (en)
DE (1) DE1172530B (en)
GB (1) GB958030A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614191A1 (en) * 1985-06-27 1987-01-08 Man Technologie Gmbh METHOD FOR FORMING A HIGH GOETE SURFACE ON A COMPONENT
CN111426497B (en) * 2020-04-05 2021-04-30 新疆正通石油天然气股份有限公司 Casing buckling evaluation method in inclined shaft well cementation process

Also Published As

Publication number Publication date
DE1172530B (en) 1964-06-18
GB958030A (en) 1964-05-13

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