Means for integrating erythemal spectral radiation

Claim 2

AN ERYTHEMAL RADIATION SENSING MEANS COMPRISING AN INTERFERENCE FILTER CONSISTING ESSENTIALLY OF A THIN FILM HAVING A VACUUM DEPOSITION ON ONE SIDE ADAPTED TO TRANSMIT ULTRAVIOLET RADIATION OF FROM 2800 TO 3200 A, A MAGNESIUM TUNGSTATE PHOSPHOR COATING ON SAID OTHER SIDE OF SAID INTERFERENCE FILTER THIN FILM, A PHOTOCELL HAVING AN ACTIVE SURFACE POSITIONED SUBSTANTIALLY AGAINST SAID PHOSPHOR COATING, AND AN ELASTOMERIC MEMBER FOR ENCAPULATING SAID FILTER AND PHOTOCELL AND INCLUDING A WINDOW AT ONE END TO EXPOSE SAID THIN FILM FILER.

Claim 3

A sensing means as set forth in claim 1 wherein said photocell is a cadmium sulfide photocell.

Claim 4

An erythemal radiation sensing means comprising a first filter for filtering radiation of from 4600 to 6000 A; an interference filter comprising a thin film having a vacuum deposition on one side adapted to transmit radiation from about 2800 to 3200 A, said vacuum deposited side being positioned substantially against said first filter; a magnesium tungstate phosphor coating positioned on said other side of said thin film; a third filter adapted to absorb ultraviolet radiation positioned substantially against said phosphor coating; a fourth filter positioned substantially against said third filter and adapted to absorb infrared radiation; a photocell having an active surface, said active surface being positioned substantially against said fourth filter; and an elastomeric member for encapsulating said filters and photocell in said abutting relationships and including a window to expose said first filter.

Claim 5

An erythemal radiation sensing means comprising a first filter for filtering radiation of from 4600 to 6000 A; an interference filter comprising a thin film having a vacuum deposition on one side adapted to transmit radiation from about 2800 to 3200 A, said vacuum deposited side being positioned substantially against said first filter; a magnesium tungstate phosphor coating positioned on said other side of said thin film; a third filter adapted to absorb ultraviolet radiation positioned substantially against said phosphor coating; a fourth filter positioned substantially against said third filter and adapted to absorb infrared radiation; a photocell having an active surface, said active surface being positioned substantially against said fourth filter; and an elastomeric member for encapsulating said filters and photocell in said abutting relationships and including a window to expose said first filter.

Claim 6

An erythemal radiation sensing means as set forth in claim 3 wherein said photocell is a cadmium sulfide photocell.

Claim 7

An erythemal radiation sensing means as set forth in claim 3 wherein said magnesium tungstate phosphor is coated on the active surface of said photocell.

Claim 8

An erythemal sensing radiation means as set forth in claim 3 including an elastomeric washer member positioned between said first filter and said elastomeric encapsulating member, the opening of said washer lying within said window and being adapted to a size for calibration of said means.

Claim 9

An erythemal radiation sensing means as set forth in claim 3 including a tubular member positioned externally of said elastomeric member having a window coincidental with said window in said elastomeric member.

Claim 10

An erythemal radiation integrating means comprising an erythemal sensing means including a photocell, an amplifier means electrically connected to said photocell of said sensing means, a power supply electrically connected to said amplifier and sensing means photocell, an electrical motor electrically connected to said powEr supply and amplifier output and a counter means operably connected to said motor.

Claim 11

An erythemal radiation integrating means comprising an erythemal sensing means including a photocell, an amplifier means electrically connected to said photocell of said sensing means, a power supply electrically connected to said amplifier and sensing means photocell, an electrical motor electrically connected to said powEr supply and amplifier output and a counter means operably connected to said motor.

Claim 12

An erythemal radiation integrating means as set forth in claim 8 wherein said sensing means comprises the sensing means of claim 1.

Claim 13

An erythemal radiation integrating means as set forth in claim 8 wherein said sensing means comprises the sensing means as set forth in claim 3.

Claim 14

An erythemal radiation integrating means as set forth in claim 8 wherein said amplifier means comprises at least one transistor.

Claim 15

An erythemal radiation integrating means as set forth in claim 8 wherein said counter means includes gear reducer means operably connected to said motor, said gear reducer including an output shaft connected to a counter.

Claim 16

An erythemal radiation integrating means as set forth in claim 8 wherein said counter means comprises a gear reducing means operably connected to said motor, and including a threaded output shaft, an indicator needle engaged within said threads and movable therealong, said needle including pivot means, and an indicia plate positioned adjacent one end of said needle for indicating erythemal values by cooperation of said face and said needle.

Claim 17

An erythemal radiation integrating means as set forth in claim 13 including an electric alarm means, a power source connected to said alarm and to said needle; and an electrical contact positioned on said indicia plate at a erythemal threshold value, said alarm being electrically connected to said contact.