FR2331807A2 - Synthesiser involving addition of primary colours - with system for varying intensity of each primary beam and synchronising circuit - Google Patents

Synthesiser involving addition of primary colours - with system for varying intensity of each primary beam and synchronising circuit

Info

Publication number
FR2331807A2
FR2331807A2 FR7613629A FR7613629A FR2331807A2 FR 2331807 A2 FR2331807 A2 FR 2331807A2 FR 7613629 A FR7613629 A FR 7613629A FR 7613629 A FR7613629 A FR 7613629A FR 2331807 A2 FR2331807 A2 FR 2331807A2
Authority
FR
France
Prior art keywords
primary
colour
circuit
synthesiser
intensity
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
FR7613629A
Other languages
French (fr)
Other versions
FR2331807B2 (en
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
Priority claimed from GB46794/75A external-priority patent/GB1530803A/en
Application filed by Individual filed Critical Individual
Publication of FR2331807A2 publication Critical patent/FR2331807A2/en
Application granted granted Critical
Publication of FR2331807B2 publication Critical patent/FR2331807B2/fr
Granted 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/461—Measurement of colour; Colour measuring devices, e.g. colorimeters with colour spinners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/54—Lamp housings; Illuminating means
    • G03B27/545—Lamp housings; Illuminating means for enlargers
    • G03B27/547—Lamp housings; Illuminating means for enlargers colour mixing heads

Abstract

The colour synthesising system are required colour by addition of at least three primary colours. It employs at least one light source and a number of colour filters, for producing a light beam of each required primary colour, with means for varying the intensity of each of the primary beams. The colour filters are carried by a disc (20) in front of a flashing light source (L), so that the primary beam obtained for each colour filter is reflected by a miror (m) towards the output. The lamp has a circuit for controlling its intensity and a release circuit for energising the lamp. A synchronising circuit is connected to the release circuit, so that the light flashes at a given intensity, upon passage of each colour filter in front of the lamp.
FR7613629A 1975-11-12 1976-05-06 Synthesiser involving addition of primary colours - with system for varying intensity of each primary beam and synchronising circuit Granted FR2331807A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46794/75A GB1530803A (en) 1974-11-18 1975-11-12 Apparatus for synthesizing colours

Publications (2)

Publication Number Publication Date
FR2331807A2 true FR2331807A2 (en) 1977-06-10
FR2331807B2 FR2331807B2 (en) 1981-08-07

Family

ID=10442626

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7613629A Granted FR2331807A2 (en) 1975-11-12 1976-05-06 Synthesiser involving addition of primary colours - with system for varying intensity of each primary beam and synchronising circuit

Country Status (1)

Country Link
FR (1) FR2331807A2 (en)

Also Published As

Publication number Publication date
FR2331807B2 (en) 1981-08-07

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