Aldisn.

Brit.

/ˈɔːldɪs/,

/ˈɒldɪs/, U.S.

/ˈɔldəs/,

/ˈɑldəs/

Origin: From proper names. Etymon: proper name Aldis.

Etymology: < the names of Hugh Lancelot Aldis (1870–1945), English astronomer, and his brother Arthur Cyril Webb Aldis (1878–1953), English manufacturing optician.Hugh Lancelot Aldis invented the Aldis lens in 1896; his brother Arthur Cyril invented the Aldis lamp. The two brothers founded the company Aldis Brothers, dealing in optical instruments as well as in other machines and tools; it became a limited company in 1936, Arthur Cyril Webb Aldis and Harold Smith being registered as joint directors.

I. Compounds.

1. Aldis lens n. Optics (now chiefly historical) a kind of anastigmatic compound lens that is a doublet consisting of a front lens which is convex on one side and concave on the other and a back lens which is convex on both sides.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > lens > [noun] > other lenses

concave1632

globe1653

meniscus1693

hemispherule1696

convex1705

omphaloptic1728

omphalopter1738

crown lens1764

achromatic1785

condenser1798

meniscus lens1820

Fresnel lens1835

bull's-eye1839

Stanhope lens1850

spot lens1860

amplifier1866

achromat1873

projectora1884

aplanat1890

triplet condenser1892

Aldis lens1902

monocentric1922

Schmidt correcting plate1934

coated lens1948

Panavision1955

Schmidt correcting lens1961

re-imaging1962

1897 Anthony's Photogr. Bull. 28 181 In the Stigmatic lens shown to-night the converging lenses are throughout of high refractive power, and the diverging lenses of low refractive power (the point in which Mr. Aldis's lens differs from any hitherto constructed).]

1902 Photogram June 189/2 The Aldis lens is a departure from existing types of anastigmats.

1911 Encycl. Brit. XXI. 511/1 In 1902 H. L. Aldis issued the ‘Aldis lens’, f/6, a doublet composed of a cemented meniscus in front and single double-convex back lens.

1989 R. Kingslake Hist. Photogr. Lens vi. 86 These Aldis lenses were sold in various forms and apertures until about 1920.

2010 M. Mobberly Hunting & Imaging Comets ii. 61 This was a 30-min exposure on a Kodak Oa-E plate with a 60-mm f/3.5 Aldis lens.

2. Aldis lamp n. a powerful lamp which can be turned rapidly on or off for signalling in Morse code.The lamp is operated by physically blocking or deflecting the light beam, rather than by turning it on and off.

ΘΚΠ

society > communication > indication > signalling > visual signalling > luminous signals > [noun] > pyrotechnic signals

blue light1761

fire shell1765

Indian light1787

Bengal light1791

Indian fire1831

flare-up light1858

flare1883

Very1907

fairy light1916

Aldis lamp1917

Aldis1918

Bengal fire1941

flame float1942

Bengal flash1946

1917 R.N.A.S. Anti-Submarine Rep. No. 3 4 The Aldis lamp used in surface craft, trawlers, etc., for communication with aircraft has given satisfactory results.

1928 C. F. S. Gamble Story N. Sea Air Station xv. 280 I at once reported the incident by means of Aldis lamp to H.M.S. Dryad.

1984 A. MacLean San Andreas (1986) xii. 317 Someone on the conning tower of the U-boat was using an Aldis lamp but transmitting very slowly.

2010 Dunoon Observer & Argyllshire Standard 9 Apr. 19/1 Our ship turned about, aldis lamps flashing messages.

3. Aldis sight n. a gunsight originally devised for use on aircraft, consisting of a non-magnifying telescope mounted parallel to the barrel of a gun.

ΘΚΠ

society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > parts and fittings of firearms > [noun] > sight > types of

dispart1578

telescopic sight1674

plain sight1686

aim-frontlet1745

hausse1787

foresight1806

gloaming sight1817

night-sight1822

bead1831

leaf1832

backsight1847

globe sight1847

pendulum hausse1850

hindsight1851

tangent scale1859

tangent1861

tangent backsight1862

training pendulum1862

training level1863

peep sight1866

dispart-sight1867

notch sight1867

buck-horn1877

orthoptic1881

aperturea1884

pinball-sighta1884

dispart patch1884

sight bar1884

flap-sight1887

barley-corn1896

ring sight1901

riflescope1902

spotting scope1904

tangent sight1908

Aldis sight1918

wind-sight1923

scope sight1934

gyro-sight1942

1918 J. M. Grider Diary 11 July in Liberty 6 Nov. (1926) 33/3 His altimeter and Aldis sight were both hit.

1928 C. F. S. Gamble Story N. Sea Air Station xvi. 295 In some instances the ring was mounted in a telescope of unit magnification, one of the best examples of which was the Aldis sight.

1998 J. Walter Rifles of World (ed. 2) ii. 61/2 They had a wooden cheek piece and an Aldis sight in a low mount offset to the left of the bore.

2009 J. Guttman Spad XIII vs. Fokker D VII 67 Both the Aldis sight and its French equivalent, the Collimateur Crétien, were hermetically sealed to contain an inert gas, which prevented the lenses from fogging.

II. Simple uses.

4. An Aldis lamp.

ΘΚΠ

society > communication > indication > signalling > visual signalling > luminous signals > [noun] > pyrotechnic signals

blue light1761

fire shell1765

Indian light1787

Bengal light1791

Indian fire1831

flare-up light1858

flare1883

Very1907

fairy light1916

Aldis lamp1917

Aldis1918

Bengal fire1941

flame float1942

Bengal flash1946

1918 B. Lee Note-bk. 3 Mar. in M. J. Chase Benjamin Lee, 2d (1920) iv. 167 I throttled down and circled widely around the light, Rowley using the Aldis for all he was worth.

1944 ‘N. Shute’ Pastoral viii. 190 Would you like me to make him a signal on the Aldis, sir, and tell him to bale out?

1955 A. MacLean H.M.S. Ulysses iii. 77 An Aldis clacked acknowledgment to the winking light on the Invader.

2001 Sea Breezes 75 326/2 The aldis blinked from the shore and the captain said, ‘Spars, please assist the mate to read the lamp.’

This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).

单词	aldis
释义	Aldisn. Brit. /ˈɔːldɪs/, /ˈɒldɪs/, U.S. /ˈɔldəs/, /ˈɑldəs/ Origin: From proper names. Etymon: proper name Aldis. Etymology: < the names of Hugh Lancelot Aldis (1870–1945), English astronomer, and his brother Arthur Cyril Webb Aldis (1878–1953), English manufacturing optician.Hugh Lancelot Aldis invented the Aldis lens in 1896; his brother Arthur Cyril invented the Aldis lamp. The two brothers founded the company Aldis Brothers, dealing in optical instruments as well as in other machines and tools; it became a limited company in 1936, Arthur Cyril Webb Aldis and Harold Smith being registered as joint directors. I. Compounds. 1. Aldis lens n. Optics (now chiefly historical) a kind of anastigmatic compound lens that is a doublet consisting of a front lens which is convex on one side and concave on the other and a back lens which is convex on both sides. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [noun] > other lenses concave1632 globe1653 meniscus1693 hemispherule1696 convex1705 omphaloptic1728 omphalopter1738 crown lens1764 achromatic1785 condenser1798 meniscus lens1820 Fresnel lens1835 bull's-eye1839 Stanhope lens1850 spot lens1860 amplifier1866 achromat1873 projectora1884 aplanat1890 triplet condenser1892 Aldis lens1902 monocentric1922 Schmidt correcting plate1934 coated lens1948 Panavision1955 Schmidt correcting lens1961 re-imaging1962 1897 Anthony's Photogr. Bull. 28 181 In the Stigmatic lens shown to-night the converging lenses are throughout of high refractive power, and the diverging lenses of low refractive power (the point in which Mr. Aldis's lens differs from any hitherto constructed).] 1902 Photogram June 189/2 The Aldis lens is a departure from existing types of anastigmats. 1911 Encycl. Brit. XXI. 511/1 In 1902 H. L. Aldis issued the ‘Aldis lens’, f/6, a doublet composed of a cemented meniscus in front and single double-convex back lens. 1989 R. Kingslake Hist. Photogr. Lens vi. 86 These Aldis lenses were sold in various forms and apertures until about 1920. 2010 M. Mobberly Hunting & Imaging Comets ii. 61 This was a 30-min exposure on a Kodak Oa-E plate with a 60-mm f/3.5 Aldis lens. 2. Aldis lamp n. a powerful lamp which can be turned rapidly on or off for signalling in Morse code.The lamp is operated by physically blocking or deflecting the light beam, rather than by turning it on and off. ΘΚΠ society > communication > indication > signalling > visual signalling > luminous signals > [noun] > pyrotechnic signals blue light1761 fire shell1765 Indian light1787 Bengal light1791 Indian fire1831 flare-up light1858 flare1883 Very1907 fairy light1916 Aldis lamp1917 Aldis1918 Bengal fire1941 flame float1942 Bengal flash1946 1917 R.N.A.S. Anti-Submarine Rep. No. 3 4 The Aldis lamp used in surface craft, trawlers, etc., for communication with aircraft has given satisfactory results. 1928 C. F. S. Gamble Story N. Sea Air Station xv. 280 I at once reported the incident by means of Aldis lamp to H.M.S. Dryad. 1984 A. MacLean San Andreas (1986) xii. 317 Someone on the conning tower of the U-boat was using an Aldis lamp but transmitting very slowly. 2010 Dunoon Observer & Argyllshire Standard 9 Apr. 19/1 Our ship turned about, aldis lamps flashing messages. 3. Aldis sight n. a gunsight originally devised for use on aircraft, consisting of a non-magnifying telescope mounted parallel to the barrel of a gun. ΘΚΠ society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > parts and fittings of firearms > [noun] > sight > types of dispart1578 telescopic sight1674 plain sight1686 aim-frontlet1745 hausse1787 foresight1806 gloaming sight1817 night-sight1822 bead1831 leaf1832 backsight1847 globe sight1847 pendulum hausse1850 hindsight1851 tangent scale1859 tangent1861 tangent backsight1862 training pendulum1862 training level1863 peep sight1866 dispart-sight1867 notch sight1867 buck-horn1877 orthoptic1881 aperturea1884 pinball-sighta1884 dispart patch1884 sight bar1884 flap-sight1887 barley-corn1896 ring sight1901 riflescope1902 spotting scope1904 tangent sight1908 Aldis sight1918 wind-sight1923 scope sight1934 gyro-sight1942 1918 J. M. Grider Diary 11 July in Liberty 6 Nov. (1926) 33/3 His altimeter and Aldis sight were both hit. 1928 C. F. S. Gamble Story N. Sea Air Station xvi. 295 In some instances the ring was mounted in a telescope of unit magnification, one of the best examples of which was the Aldis sight. 1998 J. Walter Rifles of World (ed. 2) ii. 61/2 They had a wooden cheek piece and an Aldis sight in a low mount offset to the left of the bore. 2009 J. Guttman Spad XIII vs. Fokker D VII 67 Both the Aldis sight and its French equivalent, the Collimateur Crétien, were hermetically sealed to contain an inert gas, which prevented the lenses from fogging. II. Simple uses. 4. An Aldis lamp. ΘΚΠ society > communication > indication > signalling > visual signalling > luminous signals > [noun] > pyrotechnic signals blue light1761 fire shell1765 Indian light1787 Bengal light1791 Indian fire1831 flare-up light1858 flare1883 Very1907 fairy light1916 Aldis lamp1917 Aldis1918 Bengal fire1941 flame float1942 Bengal flash1946 1918 B. Lee Note-bk. 3 Mar. in M. J. Chase Benjamin Lee, 2d (1920) iv. 167 I throttled down and circled widely around the light, Rowley using the Aldis for all he was worth. 1944 ‘N. Shute’ Pastoral viii. 190 Would you like me to make him a signal on the Aldis, sir, and tell him to bale out? 1955 A. MacLean H.M.S. Ulysses iii. 77 An Aldis clacked acknowledgment to the winking light on the Invader. 2001 Sea Breezes 75 326/2 The aldis blinked from the shore and the captain said, ‘Spars, please assist the mate to read the lamp.’ This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021). < n.1902
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