NO901262L - METAL POWDER MIRROR. - Google Patents

METAL POWDER MIRROR.

Info

Publication number
NO901262L
NO901262L NO90901262A NO901262A NO901262L NO 901262 L NO901262 L NO 901262L NO 90901262 A NO90901262 A NO 90901262A NO 901262 A NO901262 A NO 901262A NO 901262 L NO901262 L NO 901262L
Authority
NO
Norway
Prior art keywords
pressing
mirror
tool
powder
optical
Prior art date
Application number
NO90901262A
Other languages
Norwegian (no)
Other versions
NO901262D0 (en
Inventor
Donald W Burt
Gerald A Hans
Original Assignee
Hughes Aircraft Co
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 US07/223,982 external-priority patent/US4898711A/en
Application filed by Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of NO901262D0 publication Critical patent/NO901262D0/en
Publication of NO901262L publication Critical patent/NO901262L/en

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  • Optical Elements Other Than Lenses (AREA)

Abstract

Et spell (10) med optisk kvalltetsreflekterende flater (14) fremstilt ved å presse metallurgiske pulver. En optisk kvalltetsflate (14), fri for riper og uregel- messigheter dannes ved å presse flatene med en optisk kvalitetsverktøyflate påført flaten ved en spiss vinkel for å tilveiebringe en viss grad av metallflyting. Speilet (10) dannes progresslvt ved først å presse en enhet med pulver til et "grønt" pulverspeil, slntrlng av det pressede pulver og så pressing på nytt av det sintrede speilet ved å anvende et verktøy som har optiske kvalitetsflater på flatene som berører speilflåtene. Spellet glødes, presses på nytt med verktøyet som har optiske kvalitetsoverflater, og belagt på de reflekterende overflatene med et tynt metallisk belegg. Den teknikken er spesielt effektiv for å fremstille et stort antall speil med multlppel- fasetter som krever nøyaktig fasettskjærellnjer, da pressverktøyet kan bil Justert for å tilveiebringe svært nøyaktige fasettskjæringsllnjer som er reproduserbare ved produksjon av etterfølgende speil.A spell (10) with optical quantitative reflecting surfaces (14) made by pressing metallurgical powder. An optical bump surface (14), free from scratches and irregularities, is formed by pressing the surfaces with an optical quality tool surface applied to the surface at a pointed angle to provide a certain degree of metal flow. The mirror (10) is progressively formed by first pressing a unit of powder into a "green" powder mirror, flushing the pressed powder, and then re-pressing the sintered mirror using a tool having optical quality surfaces on the surfaces touching the mirror rafts. The game is glowed, re-pressed with the tool which has optical quality surfaces, and coated on the reflective surfaces with a thin metallic coating. This technique is particularly effective in producing a large number of multi-faceted mirrors that require precise facet cut lines, as the pressing tool can car Adjusted to provide highly accurate facet cut lines that are reproducible in the production of subsequent mirrors.

NO90901262A 1988-07-25 1990-03-19 METAL POWDER MIRROR. NO901262L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/223,982 US4898711A (en) 1988-07-25 1988-07-25 Powder metal mirror
PCT/US1989/002631 WO1990001174A1 (en) 1988-07-25 1989-06-16 Powder metal mirror

Publications (2)

Publication Number Publication Date
NO901262D0 NO901262D0 (en) 1990-03-19
NO901262L true NO901262L (en) 1990-03-19

Family

ID=26779757

Family Applications (1)

Application Number Title Priority Date Filing Date
NO90901262A NO901262L (en) 1988-07-25 1990-03-19 METAL POWDER MIRROR.

Country Status (1)

Country Link
NO (1) NO901262L (en)

Also Published As

Publication number Publication date
NO901262D0 (en) 1990-03-19

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