GB577059A - Method and apparatus for manufacturing optical prisms - Google Patents

Method and apparatus for manufacturing optical prisms

Info

Publication number
GB577059A
GB577059A GB12667/44A GB1266744A GB577059A GB 577059 A GB577059 A GB 577059A GB 12667/44 A GB12667/44 A GB 12667/44A GB 1266744 A GB1266744 A GB 1266744A GB 577059 A GB577059 A GB 577059A
Authority
GB
United Kingdom
Prior art keywords
prism
degrees
block
prisms
polished
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
GB12667/44A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB577059A publication Critical patent/GB577059A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/04Prisms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

577,059. Grinding and polishing prisms. KODAK, Ltd. July 3, 1944, No. 12667. Convention date, July 3, 1943. [Class 60] A support for prisms while being polished &c. comprises a V-block, the recesses in which have raised surfaces by which the position of one surface of the prism is accurately defined with respect to the grinding plane. As shown in Fig. 3, one wall of the recess has two raised surfaces 14, while the other has a single raised surface 15 ; the angle between the grinding plane, which is parallel with the top surface of the block, and the prism surface resting on the surfaces 14 is thus accurately determined. In making a prism in which it is of major importance to reduce the error in the 90 degrees angle to a minimum, the sequence of operations consists in first polishing the hypotenuse surface with the prism supported in a 90 degrees block as in Fig. 4. The prism is then transferred to a 45 degrees block shown in Fig. 5, having two locating surfaces on the sloping wall whereby the sloping side of the prism, already polished, determines one of the 45 degrees angles of the prism. The prism is again transferred to another 45 degrees block having two locating surfaces in the vertical wall against which the previously polished wall is located, whereby the 90 degrees angle is produced with minimum error. This sequence also minimises pyramidal error. Polishing is continued in each case till there is a clearance t all round. When prisms of the form shown in Fig. 10 are. to be polished, 45 degrees blocks having two locating surfaces arranged horizontally and vertically respectively on the vertical wall W, Figs. 12 and 15, are used with a saw-tooth bar 23, Fig. 13, resting on its base 24 on the sloping walls. The bars have one or two locating surfaces 41 on the vertical walls and surfaces 33 on one of the walls 27 on which the sidea R<1>, R<2> of the prism are supported. The prisms may be supported in those areas not in contact with the locating surfaces by wax.
GB12667/44A 1943-07-03 1944-07-03 Method and apparatus for manufacturing optical prisms Expired GB577059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US577059XA 1943-07-03 1943-07-03

Publications (1)

Publication Number Publication Date
GB577059A true GB577059A (en) 1946-05-02

Family

ID=22012250

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12667/44A Expired GB577059A (en) 1943-07-03 1944-07-03 Method and apparatus for manufacturing optical prisms

Country Status (1)

Country Link
GB (1) GB577059A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563059A (en) * 1948-08-30 1951-08-07 Oas Aksel Tile cutting machine
WO2005006081A1 (en) * 2003-07-09 2005-01-20 Carl-Zeiss Smt Ag Facet mirrors and a method for producing mirror facets
CN108274340A (en) * 2018-03-30 2018-07-13 马鞍山市江南光学有限公司 A kind of positioning tool of prism ridge rib and its positioning and processing method
CN109856716A (en) * 2019-03-27 2019-06-07 武汉优光科技有限责任公司 A kind of processing, shaping and the modulator approach of hollow retroreflector
CN115847230A (en) * 2022-10-20 2023-03-28 张家港市光学仪器有限公司 Grinding processing method of roof prism
CN116175335A (en) * 2023-04-17 2023-05-30 南京茂莱光学科技股份有限公司 Prism processing device and processing method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563059A (en) * 1948-08-30 1951-08-07 Oas Aksel Tile cutting machine
WO2005006081A1 (en) * 2003-07-09 2005-01-20 Carl-Zeiss Smt Ag Facet mirrors and a method for producing mirror facets
CN108274340A (en) * 2018-03-30 2018-07-13 马鞍山市江南光学有限公司 A kind of positioning tool of prism ridge rib and its positioning and processing method
CN109856716A (en) * 2019-03-27 2019-06-07 武汉优光科技有限责任公司 A kind of processing, shaping and the modulator approach of hollow retroreflector
CN115847230A (en) * 2022-10-20 2023-03-28 张家港市光学仪器有限公司 Grinding processing method of roof prism
CN115847230B (en) * 2022-10-20 2023-11-21 张家港市光学仪器有限公司 Grinding processing method of roof prism
CN116175335A (en) * 2023-04-17 2023-05-30 南京茂莱光学科技股份有限公司 Prism processing device and processing method
CN116175335B (en) * 2023-04-17 2024-03-29 南京茂莱光学科技股份有限公司 Prism processing device and processing method

Similar Documents

Publication Publication Date Title
GB678256A (en) Improvements in or relating to a lens chuck
GB577059A (en) Method and apparatus for manufacturing optical prisms
US1397189A (en) Base for holders for measuring-blocks
DK54024C (en) Method and Tools for use in polishing flat surfaces, especially mirror glass.
FR648700A (en) Adjustable support base for lathe tools and other applications
US1388308A (en) Device for dressing grinding-wheels
GB1551091A (en) Heavy-duty liquid detergent and process
BE876305A (en) DEVICE FOR DETERMINING THE QUALITY OF THE POLISH OF OPTICAL SURFACES
GB956543A (en) Two-observer microscope equipment particularly for surgical operations
GB606073A (en) Improvements in or relating to the measurement, indexing, dividing and setting out of angles
US2826189A (en) Dressing tool holder
GB638594A (en) Improvements in or relating to the grinding of tools
FR1105975A (en) Support for hand tools, in particular for watchmakers or similar
GB552008A (en) Improvements relating to the manufacture of light-dividing optical systems
GB528583A (en) Improvements in micrometer measuring devices
CH246307A (en) Tool support device for lathe.
FR826019A (en) Process for galvanically obtaining objects with a very shiny surface, in particular mirrors for projectors
SU411779A1 (en) METHOD OF MAKING A CORNER REFLECTOR
USD54584S (en) Design for a gage-block
GB336474A (en) Improvements in cramps
ES8701U (en) Pieces or blocks articulated for the formation of floors and ceilings (Machine-translation by Google Translate, not legally binding)
GB596409A (en) Fixture for supporting a cutting tool while being ground
GB762779A (en) Improvements in contour or profile gauges
GB556516A (en) Improvements relating to tool holders for use on machine tools
FR877732A (en) Optical observation apparatus, in particular microscope, for machine tools