Gloss Investigations Using Reflected Images of a Target Pattern*

Richard S. Hunter

doi:10.1364/JOSA.26.000190

Journal of the Optical Society of America
Vol. 26,
Issue 4,
pp. 190-196
(1936)
•https://doi.org/10.1364/JOSA.26.000190

Gloss Investigations Using Reflected Images of a Target Pattern

Richard S. Hunter

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Richard S. Hunter, "Gloss Investigations Using Reflected Images of a Target Pattern*," J. Opt. Soc. Am. 26, 190-196 (1936)

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Abstract

A target pattern of concentric rings varying from fine lines to broad bands has been placed in the open face of a desk lamp. This luminous target is useful in the study of the gloss characteristics of the more glossy surfaces. The lines and bands of various sizes in the target provide means for studying surfaces of a wide range of “distinctness-of-reflected-image” gloss. Records may be made of which lines and bands are visible by reflection from different surfaces. Such records serve as permanent gloss values for the different surfaces studied. The dark areas of the target immediately adjacent to the luminous areas provide ideal conditions for the identification of surface “bloom.” The best gloss differentiations are made when the lamp is used in a darkened room so that the luminous pattern is the only source of light illuminating the surfaces inspected. Photographic records of gloss and unusual gloss effects are discussed.

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Distance from Lamp to Sample		30 cm						90 cm
Observers		RSH	DBJ	KSG	GWH	HJK	WNH	RSH	DBJ	KSG	GWH	HJK	WNH
	A₁	f	g	f	g	f	g	–	–	–	–	–	–
	A₂	–	–	–	–	–	–	–	–	–	–	–	–
	A	–	–	–	–	–	–	f	f	p	p	p	f
Panel a–l	B	–	–	–	–	–	–	–	–	–	–	–	–
	C	–	–	–	–	–	–	–	–	–	–	–	–
	D	–	–	–	–	–	–	–	–	–	–	–	–
	E	–	–	–	–	–	–	–	–	–	–	–	–
Mean Rating		(f+0.5)A₁						(p+0.5)A
nonuniformities		–	–	–	–	–	–	–	x	–	x	–	–
waviness		–	x	x	x	x	x	x	x	x	x	x	x
specks scratches		x	–	x	x	x	x	–	–	x	–	–	–

	A₁	f	p	p	p	f	p	–	–	–	–	–	–
	A₂	–	–	–	–	–	–	–	–	–	–	–	–
	A	–	–	–	–	–	–	–	–	–	–	–	f
Panel b–l	B	–	–	–	–	–	–	f	g	p	f	f	–
	C	–	–	–	–	–	–	–	–	–	–	–	–
	D	–	–	–	–	–	–	–	–	–	–	–	–
	E	–	–	–	–	–	–	–	–	–	–	–	–
Mean Rating		(p+0.3A₁)						(f+0.5)B
nonuniformities		x	–	x	x	–	–	–	–	–	–	–	–
waviness		–	–	–	–	–	–	x	x	x	x	–	–
specks scratches		x	–	x	x	x	–	x	–	–	x	x	–

	A₁	–	–	–	–	–	–	–	–	–	–	–	–
	A₂	–	–	–	–	–	–	–	–	–	–	–	–
	A	–	–	–	–	–	–	–	–	–	–	–	–
Panel c–l	B	–	–	–	–	–	–	–	–	–	–	–	–
	C	f	p	f	f	f	f	–	–	–	–	–	–
	D	–	–	–	–	–	–	p	f	p	p	p	g
	E	–	–	–	–	–	–	–	–	–	–	–	–
Mean Rating		(f−0.2)C						(p+0.5)D
nonuniformities		–	–	–	x	–	–	–	–	–	–	–	–
waviness		–	–	–	–	–	–	–	–	–	–	–	–
specks scratches		x	x	x	x	x	–	x	–	x	x	–	x

	A₁	g	g	g	g	g	g	–	–	–	–	–	–
	A₂	–	–	–	–	–	–	–	g	f	–	–	p
	A	–	–	–	–	–	–	g	–	–	f	g	–
Panel a–r	B	–	–	–	–	–	–	–	–	–	–	–	–
	C	–	–	–	–	–	–	–	–	–	–	–	–
	D	–	–	–	–	–	–	–	–	–	–	–	–
	E	–	–	–	–	–	–	–	–	–	–	–
Mean Rating		gA₁						(p−0.2)A₂
nonuniformities		–	–	–	–	–	–	–	–	–	–	–	–
waviness		–	–	–	–	–	–	x	–	–	–	–	–
specks scratches		x	–	x	x	x	x	x	x	x	x	–	–

	A₁	p	p	p	p	p	p	–	–	–	–	–
	A₂	–	–	–	–	–	–	–	–	–	–	–	–
	A	–	–	–	–	–	–	–	–	–	–	–	p
Panel b–r	B	–	–	–	–	–	–	p	p	p	p	p	–
	C	–	–	–	–	–	–	–	–	–	–	–	–
	D	–	–	–	–	–	–	–	–	–	–	–	–
	E	–	–	–	–	–	–	–	–		–	–	–
Mean Rating		pA₁						(p+0.5)B
nonuniformities		x	x	–	x	x	x	–	x	–	–	x	–
waviness		x	x	x	x	x	x	x	x	x	x	x	x
specks scratches		–	–	x	x	x	–	–	x	x	x	–	–

	A₁	–	–	–	–	–	–	–	–	–	–	–	–
	A₂	–	–	–	–	–	–	–	–	–	–	–	–
	A	–	–	–	–	–	–	–	–	–	–	–	–
Panel c–r	B	–	–	–	–	–	–		–	–	–	–	–
	C	–	–	–	–	–	–	–	–	–	–	–	–
	D	p	p	–	–	–	–	–	–	–	–	–	–
	E	–	–	f	g	f	g	f	g	p	p	p	p
Mean Rating		gE						(p+0.5)E
nonuniformities		–	–	–	–	–	–	–	–	–	–	–	–
waviness		–	–	–	–	–	–	–	–	–	–	–	–
specks scratches		x	x	x	x	x	x	x	–	x	x	–	–

Abstract

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Tables (1)

Journal of the Optical Society of America