Transparent head for a skin treatment device

Abstract

A transparent cover member for a skin treatment device passes light and heat to a user's skin. The transparent cover member presents a comfortable flat surface at its exterior, and includes features that couple to a heating element that surrounds a plurality of visible light LEDs. The transparent cover member can include retaining features to assist in assembling the head assembly of the skin treatment device.

What is claimed is: 
     
         1 . A transparent cover member for a skin treatment device, comprising:
 a top having a front and a back;   the front being configured to face outward from the skin treatment device;   the back being opposite the front and having:
 a central portion; 
 a perimeter shoulder formed around the central portion; 
 an outside wall extending down from the front around an entirety of a perimeter of the front, to a bottom that turns inward from the outside wall to the central portion; 
 wherein the central portion defines a hollow space that is bounded by the back, the perimeter shoulder, and an inner wall that extends downward from and outside of the perimeter shoulder, and wherein the bottom of the outside wall is lower than the back; and 
 wherein the bottom of the outside wall extends farther from the front than the perimeter shoulder. 
   
     
     
         2 . The transparent cover member of  claim 1 , wherein the transparent cover member is comprised of sapphire glass. 
     
     
         3 . The transparent cover member of  claim 1 , wherein the transparent cover member is comprised of silicon. 
     
     
         4 . The transparent cover member of  claim 1 , wherein the transparent cover member further comprises, on the back, an ultrasonic coupling feature extending from the back in the central portion. 
     
     
         5 . The transparent cover member of  claim 1 , wherein the transparent cover member is comprised of material that is selected to be less transparent for some wavelengths of infrared light while being more transparent for other wavelengths of infrared light. 
     
     
         6 . The transparent cover member of  claim 1 , wherein a surface of front of the transparent cover member is frosted. 
     
     
         7 . A transparent cover member for a skin treatment device that provides light and heat therapy to a user's skin, comprising:
 a front configured to face outward from the skin treatment device;   a back that is opposite the front, and includes a central portion;   a perimeter shoulder formed around the central portion at the back;   an outside wall extending down from the front around an entirety of a perimeter of the front to a bottom;   the bottom extending inward toward the central portion from the outside wall around an entirety of the outside wall;   an inner wall extending from the perimeter shoulder to the bottom of the outside wall; and   wherein the central portion defines a hollow space that is bounded by the back, perimeter shoulder, and the inner wall, and wherein the bottom of the outside wall is lower than the back and the perimeter shoulder.   
     
     
         8 . The transparent cover member of  claim 7 , wherein the transparent cover member is comprised of sapphire glass. 
     
     
         9 . The transparent cover member of  claim 7 , wherein the transparent cover member is comprised of silicon. 
     
     
         10 . The transparent cover member of  claim 7 , wherein the transparent cover member is comprised of material that is selectively transparent for selected wavelengths of infrared light. 
     
     
         11 . The transparent cover member of  claim 7 , wherein a surface of the and a surface of the outside wall are frosted. 
     
     
         12 . A monolithic glass head for a skin treatment device, comprising:
 a front portion having a front surface that is configured to face outward from the skin treatment device;   a back portion that is opposite the flat front portion and which includes a central portion;   a perimeter shoulder formed around the central portion at the back portion;   an outside wall portion extending down from the flat front portion around an entirety of a perimeter of the flat front portion to a bottom; and   an inner wall extending down from the perimeter shoulder to the bottom of the outside wall.   
     
     
         13 . The monolithic glass head of  claim 12 , wherein the transparent cover member consists entirely of sapphire glass or silicon. 
     
     
         14 . The monolithic glass head of  claim 12 , wherein the top of the transparent cover member is frosted. 
     
     
         15 . The monolithic glass head of  claim 12 , wherein the transparent cover member is comprised of material that is selected to be less transparent for some wavelengths of infrared light while being more transparent for other wavelengths of infrared light.