JPS5779426A - Display device of prism value - Google Patents

Display device of prism value

Info

Publication number
JPS5779426A
JPS5779426A JP15508280A JP15508280A JPS5779426A JP S5779426 A JPS5779426 A JP S5779426A JP 15508280 A JP15508280 A JP 15508280A JP 15508280 A JP15508280 A JP 15508280A JP S5779426 A JPS5779426 A JP S5779426A
Authority
JP
Japan
Prior art keywords
circuit
coordinates
circuits
display
output
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.)
Granted
Application number
JP15508280A
Other languages
Japanese (ja)
Other versions
JPH029295B2 (en
Inventor
Hiroshi Tamaki
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.)
Tokyo Optical Co Ltd
Original Assignee
Tokyo Optical Co 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 Tokyo Optical Co Ltd filed Critical Tokyo Optical Co Ltd
Priority to JP15508280A priority Critical patent/JPS5779426A/en
Publication of JPS5779426A publication Critical patent/JPS5779426A/en
Publication of JPH029295B2 publication Critical patent/JPH029295B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

PURPOSE:To realize an optional selection for the display of system between an orthogonal coordinates and a polar coordinates, by providing a mechanism that converts the measured prism value of either one of the above-mentioned two coordinates systems into the display of the other coordinates system. CONSTITUTION:The refractive power values PX and PY of X and Y directions are squared through squaring circuits 5 and 6 to be turned into (PX<2>+PY<2>)<1/2> through an adder circuit 7 and a square root circuit 8. This output is equivalent to (r) of the polar coordinates displays (r) and theta. A divider 9 performs an operation of PX/PY and delivers the value of operation to a tan<-1> circuit 10. Figures 13, 14, 17 and 18 indicate the setting circuits to which 0 deg., 180 deg., 360 deg. and 180 deg. are set, respectively. Selecting circuits 12 and 16 perform the selection when the set value is supplied to an adder circuit 11 or a subtractor circuit 15. A selecting circuit 19 selects the output between the circuits 15 and 11. The output of the circuit 19 is equivalent to theta of the polar coordinates display.
JP15508280A 1980-11-04 1980-11-04 Display device of prism value Granted JPS5779426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15508280A JPS5779426A (en) 1980-11-04 1980-11-04 Display device of prism value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15508280A JPS5779426A (en) 1980-11-04 1980-11-04 Display device of prism value

Publications (2)

Publication Number Publication Date
JPS5779426A true JPS5779426A (en) 1982-05-18
JPH029295B2 JPH029295B2 (en) 1990-03-01

Family

ID=15598256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15508280A Granted JPS5779426A (en) 1980-11-04 1980-11-04 Display device of prism value

Country Status (1)

Country Link
JP (1) JPS5779426A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62135744A (en) * 1985-12-10 1987-06-18 Agency Of Ind Science & Technol Lens projection characteristic measuring device
JPH0383841U (en) * 1989-12-18 1991-08-26

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50145249A (en) * 1974-05-08 1975-11-21
JPS52449A (en) * 1975-05-23 1977-01-05 Acuity Syst Method of and apparatus for measuring refraction characteristic of sphereecircular cylindrical surface optical system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50145249A (en) * 1974-05-08 1975-11-21
JPS52449A (en) * 1975-05-23 1977-01-05 Acuity Syst Method of and apparatus for measuring refraction characteristic of sphereecircular cylindrical surface optical system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62135744A (en) * 1985-12-10 1987-06-18 Agency Of Ind Science & Technol Lens projection characteristic measuring device
JPH0383841U (en) * 1989-12-18 1991-08-26

Also Published As

Publication number Publication date
JPH029295B2 (en) 1990-03-01

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