Photometer with stationary sample holder and rotatable shutter

Details Photometer with stationary sample holder and rotatable shutter Photometer with stationary sample holder and rotatable shutter

1978-05-30

1980-07-22

McGraw, Vincent P.

Optics: measuring and testing

Sample, specimen, or standard holder or support

250361C, 356311, 422 54, G01N 2101

Patent

active

042137039

ABSTRACT:
A sample holder and shutter assembly for photometers is disclosed in which a stationary sample chamber body is mounted in close proximity to a photosensitive device. A light path is provided from the sample chamber to the photosensitive device and shutter means is provided for selectively interrupting and opening the light path between the photosensitive device and the sample chamber without moving the sample chamber. Heat exchange means including a heat pump and a heat reservoir are provided for maintaining a desired temperature in the sample chamber. The sample chamber body is thermally connected to said heat pump and is preferably thermally isolated from the means mounting it. In one embodiment, the heat pump and heat reservoir are flexibly connected.

REFERENCES:
patent: 3227885 (1966-01-01), Hirai et al.
patent: 3370175 (1968-02-01), Jordon et al.
patent: 3764214 (1973-10-01), Heiss
patent: 3877817 (1975-04-01), Ralston
patent: 3917404 (1975-11-01), Heiss
patent: 4066365 (1978-01-01), Staunton
patent: 4099920 (1978-07-01), Heiss

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