JPS5643601A - Semipermeable mirror - Google Patents

Semipermeable mirror

Info

Publication number
JPS5643601A
JPS5643601A JP11956279A JP11956279A JPS5643601A JP S5643601 A JPS5643601 A JP S5643601A JP 11956279 A JP11956279 A JP 11956279A JP 11956279 A JP11956279 A JP 11956279A JP S5643601 A JPS5643601 A JP S5643601A
Authority
JP
Japan
Prior art keywords
thin film
refractive index
glass
semipermeable
prism
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
JP11956279A
Other languages
Japanese (ja)
Other versions
JPS6239401B2 (en
Inventor
Kazuo Kimura
Sadao Akatsuka
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP11956279A priority Critical patent/JPS5643601A/en
Publication of JPS5643601A publication Critical patent/JPS5643601A/en
Publication of JPS6239401B2 publication Critical patent/JPS6239401B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To improve the balance of optical performances by forming the semipermeable thin film provided to the joining surfaces of two prisms of the same refractive index by a dielectric thin film of a refractive index lower than the refractive index of the prism glass, a silver thin film and a dielectric thin film of a refractive index higher than that of the prism glass, from the incident prism side, in this order.
CONSTITUTION: A semipermeable thin film D is provided to rectangular prisms PR, PT comprising glass of the same refractive index and is adhered by way of an adhesive agent layer 6. The semipermeable film D is constituted by a dielectric thin film L of MgF2, chiolite, cryolite, etc. of a refractive index lower than that of glass, a silver thin film Ag, and a dielectric thin film H of ZnS, CeO2, ZrO2, TiO2, etc. of a refractive index higher than that of the glass, in this order, from the prism PR side on the incident side of incident light IL. The results of the calculations of the relative intensites of the incident light IL, reflected light RL and transmitted light TL and the reflectances R and transmittances T as well as the calculation of polarization indicate that the balance of optical performances is better than other cases by constituting the semipermeable thin film in the above-mentioned manner.
COPYRIGHT: (C)1981,JPO&Japio
JP11956279A 1979-09-17 1979-09-17 Semipermeable mirror Granted JPS5643601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11956279A JPS5643601A (en) 1979-09-17 1979-09-17 Semipermeable mirror

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11956279A JPS5643601A (en) 1979-09-17 1979-09-17 Semipermeable mirror

Publications (2)

Publication Number Publication Date
JPS5643601A true JPS5643601A (en) 1981-04-22
JPS6239401B2 JPS6239401B2 (en) 1987-08-22

Family

ID=14764392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11956279A Granted JPS5643601A (en) 1979-09-17 1979-09-17 Semipermeable mirror

Country Status (1)

Country Link
JP (1) JPS5643601A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159512U (en) * 1982-04-20 1983-10-24 株式会社東芝 Laser beam synthesizer
JPS6028603A (en) * 1983-07-26 1985-02-13 Minolta Camera Co Ltd Prism type beam splitter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159512U (en) * 1982-04-20 1983-10-24 株式会社東芝 Laser beam synthesizer
JPH0241607Y2 (en) * 1982-04-20 1990-11-06
JPS6028603A (en) * 1983-07-26 1985-02-13 Minolta Camera Co Ltd Prism type beam splitter

Also Published As

Publication number Publication date
JPS6239401B2 (en) 1987-08-22

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