Apparatus for adapting a spectrophotometer to perform the function of a densitometer

Claim 1

An apparatus for adapting a spectrophotometer containing a light source, monochromator, sample chamber, detector, and recorder to perform the function of a densitometer comprising, in combination: a. base means which rests upon the surface of said sample chamber of said spectrophotometer; b. means connected to said base means for directing a beam of light from said light source through a non-opaque sample, including: i. first mirror means connected to the bottom of said base means for reflecting said light beam upwardly from said sample chamber to second mirror means, ii. second mirror means connected to the top of said base means for reflecting said light beam reflected from said first mirror means to third mirror means, iii. a third mirror means connected to the top of said base means for reflecting said light beam reflected from said second mirror means to fourth mirror means, and iiii. fourth mirror means connected to the bottom of said base means, said fourth mirror means reflecting said light beam directly to said detector; c. lense means connected to said base means for focusing said light beam prior to said light beam impinging upon said nonopaque sample, d. slit means connected to said base means, said slit means being located above said base means between said third mirror means and said fourth mirror means for narrowing said light beam prior to the impingement of said light beam upon said nonopaque sample; e. platform means slidably attached to said base means for moving said non-opaque sample across said light beam, said platform means being located between said slit means and said fourth mirror means in the path of said light beam reflected from said third mirror means to said fourth mirror means, said platform means having means for receiving and holding said nonopaque sample; f. means connected to said base means for moving said platform means across said light beam.

Claim 2

An apparatus for adapting a spectrophotometer containing a light source, monochromator, sample chamber, detector, and recorder to perform the function of a densitometer comprising, in combination: a. base means which rests upon the surface of said sample chamber of said spectrophotometer; b. means connected to said base means for directing a beam of light from said light source through a non-opaque sample, including: i. first mirror means connected to the bottom of said base means for reflecting said light beam upwardly from said sample chamber to second mirror means, ii. second mirror means connected to the top of said base means for reflecting said light beam reflected from said first mirror means to third mirror means, iii. a third mirror means connected to the top of said base means for reflecting said light beam reflected from said second mirror means to fourth mirror means, and iiii. fourth mirror means connected to the bottom of said base means, said fourth mirror means reflecting said light beam directly to said detector; c. lense means connected to said base means for focusing said light beam prior to said light beam impinging upon said nonopaque sample, d. slit means connected to said base means, said slit means being located above said base means between said third mirror means and said fourth mirror means for narrowing said light beam prior to the impingement of said light beam upon said nonopaque sample; e. platform means slidably attached to said base means for moving said non-opaque sample across said light beam, said platform means being located between said slit means and said fourth mirror means in the path of said light beam reflected from said third mirror means to said fourth mirror means, said platform means having means for receiving and holding said nonopaque sample; f. means connected to said base means for moving said platform means across said light beam.

Claim 9

An apparatus for adapting a spectrophotometer containing a light source, monochromator, sample chamber, detector, and recorder to perform the function of a densitometer comprising, in combination: a. base means which rests upon the surface of said sample chamber of said spectrophotometer; b. means connected to said base means for directing a beam of light from said light source through a non-opaque sample, including: i. first mirror means reflecting said light beam upwardly through said hole means approximately 90*, ii. second mirror means reflecting light beam approximately 90* in approximately the same direction and approximately parallel to said light beam traveling from said light source, iii. third mirror means reflecting said light beam approximately 90* downward, and iv. fourth mirror means reflecting said light beam approximately 90* in the same direction and generally parallel to said light beam traveling from said light source. c. lense means connected to said base means for focusing said light beam prior to said light beam impinging upon said non-opaque sample, d. slit means connected to the top of said base means said slit means being located above said base means between said third mirror means and said fourth mirror means for narrowing said light beam prior to the impingement of said light beam upon said non-opaque sample, e. platform means slidably attached to said base means for moving said non-opaque sample across said light beam, said platform means being located between said slit means and said fourth mirror means in the path of said light beam reflected from said third mirror means to said fourth mirror means, said platform means having means for receiving and holding said non-opaque sample, f. means connected to said base means for moving said platform means comprising i. an electric motor connected to said base means, ii. rotatable, threaded shaft means connecting said electric motor to said guide means, and iii. said guide means having threads therein for engaging said screw means.

Claim 10

An apparatus for adapting a spectrophotometer containing a light source, monochromator, sample chamber, detector, and recorder to perform the function of a densitometer comprising, in combination: a. base means which rests upon the surface of said sample chamber of said spectrophotometer; b. means connected to said base means for directing a beam of light from said light source through a non-opaque sample, including: i. first mirror means reflecting said light beam upwardly through said hole means approximately 90*, ii. second mirror means reflecting light beam approximately 90* in approximately the same direction and approximately parallel to said light beam traveling from said light source, iii. third mirror means reflecting said light beam approximately 90* downward, and iv. fourth mirror means reflecting said light beam approximately 90* in the same direction and generally parallel to said light beam traveling from said light source. c. lense means connected to said base means for focusing said light beam prior to said light beam impinging upon said non-opaque sample, d. slit means connected to the top of said base means said slit means being located above said base means between said third mirror means and said fourth mirror means for narrowing said light beam prior to the impingement of said light beam upon said non-opaque sample, e. platform means slidably attached to said base means for moving said non-opaque sample across said light beam, said platform means being located between said slit means and said fourth mirror means in the path of said light beam reflected from said third mirror means to said fourth mirror means, said platform means having means for receiving and holding said non-opaque sample, f. means connected to said base means for moving said platform means comprising i. an electric motor connected to said base means, ii. rotatable, threaded shaft means connecting said electric motor to said guide means, and iii. said guide means having threads therein for engaging said screw means.