GB439276A - Improvements in optical colour-matching apparatus - Google Patents

Improvements in optical colour-matching apparatus

Info

Publication number
GB439276A
GB439276A GB12227/35A GB1222735A GB439276A GB 439276 A GB439276 A GB 439276A GB 12227/35 A GB12227/35 A GB 12227/35A GB 1222735 A GB1222735 A GB 1222735A GB 439276 A GB439276 A GB 439276A
Authority
GB
United Kingdom
Prior art keywords
colour
polarizer
light
april
received
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
GB12227/35A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB439276A publication Critical patent/GB439276A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J4/00—Measuring polarisation of light
    • G01J4/02—Polarimeters of separated-field type; Polarimeters of half-shadow type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

439,276. Colorimeters. NAGEL, W., 26, Merianstrasse, Freiburg, Breisgau, Germany. April 23, 1935, No. 12227. Convention date, April 21, 1934. [Class 97 (i)] In apparatus for estimating the colour of a solution &c. by matching it with a comparison colour, the comparison colour is obtained by passing light through a polarizer and an analyzer between which is disposed a plate of doubly-refracting material which can be adjusted about an axis at right-angles to the light beam. Light from a single source is received by two mirrors h<1>, h<2>, and one of the reflected beams passes through a container d<2> for the test solution &c. The other beam passes through a polarizer a and a rotatable analyzer b, the plate c of quartz &c., being disposed between them and being angularly adjustable by means of a screw having a graduated head s<1>. The two beams are received by a prism e by which they are directed into a single eyepiece f.
GB12227/35A 1934-04-21 1935-04-23 Improvements in optical colour-matching apparatus Expired GB439276A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE439276X 1934-04-21

Publications (1)

Publication Number Publication Date
GB439276A true GB439276A (en) 1935-12-03

Family

ID=6507285

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12227/35A Expired GB439276A (en) 1934-04-21 1935-04-23 Improvements in optical colour-matching apparatus

Country Status (1)

Country Link
GB (1) GB439276A (en)

Similar Documents

Publication Publication Date Title
GB979712A (en) Apparatus for measuring the circular dichroism of optically active substances
GB439276A (en) Improvements in optical colour-matching apparatus
GB1149973A (en) Improvements in or relating to apparatus for determining the refractive index of optically transparent substances
GB591991A (en) Improvements in or relating to measuring the focal length of lenses
GB1287025A (en) A photometer arrangement for observation instruments
US3630621A (en) Measurement of visibility through a fluid using polarized light
GB705760A (en) Improved refractometer
SU55518A1 (en) Method for controlling uniformity of birefringent films
GB456286A (en) Improvements in or relating to polariscopes
Bull A non-polarising spectrophotometer
GB292337A (en) Improvements in instrument for measuring turbidity, color and other characteristics of fluids
SU115025A2 (en) Double gender risk
Pickard et al. LV.—Investigations on the dependence of rotatory power on chemical constitution. Part XIX. The rotatory and refractive dispersions and the absorption spectrum of d-γ-nonyl nitrite
Descamps Part II.—Apparatus and methods. Methods for measuring rotatory power in the ultra-violet region of the spectrum
Kingslake A new type of Nephelometer
VAN Thickness Control-of Thin Films
SU34183A1 (en) Spectrophotometer
GB626629A (en) Improvements in auxiliary plates utilised for examination in polarised light
US2776593A (en) Combination interferometer-schlieren apparatus for density determination in non-homogeneous transparent fields
GB572678A (en) Improvements in or relating to indicating instruments
GB560325A (en) Improved optical instrument for testing and gauging
GB416962A (en) Improvements in and relating to photo-metric apparatus
GB438511A (en) Improvements in or relating to spectrophotometers
GB205900A (en) Improvements relating to apparatus for the measurement of colour
GB432306A (en) Improvements in or relating to spectrophotometric analysis and prediction