GB1527595A - Apparatus for measuring modulation transfer function of an optical component - Google Patents
Apparatus for measuring modulation transfer function of an optical componentInfo
- Publication number
- GB1527595A GB1527595A GB4234174A GB4234174A GB1527595A GB 1527595 A GB1527595 A GB 1527595A GB 4234174 A GB4234174 A GB 4234174A GB 4234174 A GB4234174 A GB 4234174A GB 1527595 A GB1527595 A GB 1527595A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transfer function
- modulation transfer
- optical component
- source
- detector
- 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
Links
- 230000003287 optical effect Effects 0.000 title abstract 3
- 230000005855 radiation Effects 0.000 abstract 2
- 229910018487 Ni—Cr Inorganic materials 0.000 abstract 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 abstract 1
- 230000005670 electromagnetic radiation Effects 0.000 abstract 1
- 229910052732 germanium Inorganic materials 0.000 abstract 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
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
- G01M11/02—Testing optical properties
- G01M11/0292—Testing optical properties of objectives by measuring the optical modulation transfer function
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
1527595 Modulation transfer function of an optical component SIRA INSTITUTE Ltd 22 Dec 1975 [30 Sept 1974] 42341/74 Heading G1A Apparatus for measuring the modulation transfer function of an optical component comprises a source of electromagnetic radiation, a MoirÚ fringe generator having two linear gratings with their planes parallel but not their lines and being linearly moveable relative to one another, a detector arranged to receive radiation via the generator and the component, and an analyzer of its output for determining the function. The source, of nickelchromium wire on a ceramic cylinder electrically heated to 1000 K is followed by a germanium condenser lens and a filter. A source of visual wavelength may be used instead. A collimator lens and the component being tested image the radiation on to a slit on the detector 16 via a 100Hz chopper. One grating is circular and the other rectangular and slidable normally to it lines and reciprocated by a stepping motor, both being rotatable about the axis of the circular one in the opposite sense to change the spatial frequency but not the orientation of the fringes. The detector 16 is connected to an analyser as shown in Fig. 3, where 43 is a phase sensitive rectifier and 42, 45, 47 and 57 are band, low, high and low pass filters respectively and meter 52 indicates modulation transfer function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4234174A GB1527595A (en) | 1975-12-22 | 1975-12-22 | Apparatus for measuring modulation transfer function of an optical component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4234174A GB1527595A (en) | 1975-12-22 | 1975-12-22 | Apparatus for measuring modulation transfer function of an optical component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1527595A true GB1527595A (en) | 1978-10-04 |
Family
ID=10423997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4234174A Expired GB1527595A (en) | 1975-12-22 | 1975-12-22 | Apparatus for measuring modulation transfer function of an optical component |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1527595A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772120A (en) * | 1985-07-10 | 1988-09-20 | Matra | Determination of the transfer function of an optical instrument |
| EP0418054A3 (en) * | 1989-09-13 | 1992-11-04 | Matsushita Electric Industrial Co., Ltd. | Apparatus for evaluating a lens |
-
1975
- 1975-12-22 GB GB4234174A patent/GB1527595A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772120A (en) * | 1985-07-10 | 1988-09-20 | Matra | Determination of the transfer function of an optical instrument |
| EP0418054A3 (en) * | 1989-09-13 | 1992-11-04 | Matsushita Electric Industrial Co., Ltd. | Apparatus for evaluating a lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |